TW308742B - - Google Patents

Description

308742

7.7 ΛΑ B Printed by Beigong Consumer Cooperative of the Central Bureau of Economic Affairs of the Ministry of Economic Affairs 5. Description of the invention (1) [Technical Field] The present invention relates to a straightened wet nonwoven fabric for battery separators and a method for manufacturing the same And sealed secondary battery Γ [Prior art] The non-woven fabric used for the battery separator is to separate the positive electrode from the negative electrode or the electrode active material, or prevent the migration of the electrode fragment, prevent short circuit, keep the electrolyte / reduce Internal conductive impedance / therefore requires stability, durability, etc. for electrolytes. Especially for secondary batteries such as nickel / cadmium accumulators, the oxygen produced in the positive electrode must be consumed smoothly at the negative electrode when overcharged. In addition, due to counterbalance, the thickness of the electrode changes due to charge and discharge. Therefore, it is necessary to suppress the disappearance of the electrolyte from the separator. Therefore, it is required to have good gas permeability, and to have a high pushability against the electrolyte of the return compression. In addition, the mechanical strength that is durable to the tension of the battery manufacturing process is also an important required performance. However, the use of past melt-blown nonwoven fabrics, fast spinning nonwoven fabrics, spunbonded nonwoven fabrics, dry nonwoven fabrics, wet nonwoven fabrics, etc. as battery separators cannot fully achieve the aforementioned required performance "] For example , Japanese Patent Laid-Open No. 1 _ 1 5 7 0 5 5 is to form a compact structure on the surface layer under specific conditions (jra hot melt spray method non-woven fabric) and try to improve mechanical strength and prevent short circuit Performance and electrolyte retention performance; however, only the hot stamping of non-woven fabrics cannot obtain sufficient mechanical strength. If it is made to have high strength, use high temperature; high pressure stamping treatment will reduce the electrolyte. Questions about the liquid retention performance, gas permeability, etc. The paper size is applicable to China National Standard (CNS) A4 specification (210X297 mm) '' -4-(please read the precautions on the back before filling this page)-installed. Order it 〇〇8742 A7 _____B7__ V. Invention description (2) Question. , Japanese Unexamined Patent Publication No. 2-2 5 9 1 8 9, which discloses the use of hot-melt paper-making layers by mixing alkali-resistant fibers with heat-fusible fibers, forming them under the shape of It improves the strength of the non-woven fabric layer and the liquid-retaining beer of the electrolyte. However, to obtain high-strength fibers that increase the thermal fusion property and increase the thermoforming temperature will cause a decrease in the porosity of the fiber surface or layer, resulting in insufficient liquid retention performance of the electrolyte / Conversely, if the thermoforming temperature is lowered, sufficient mechanical strength as a non-woven material for the separator cannot be obtained. Due to the lack of interlacing of the non-woven fabric, compression will cause damage to the structure of the non-woven fabric. Therefore, it is easy to cause the release of electrolysis called depletion. 1 ~ 2 8 1 4 5 4 Japanese Patent Laid-Open No. 6 1-2 8 1 4 5 4 describes the use of high-pressure water jet to the fiber diameter of 0.1 ~ 2 The meltblown nonwoven fabric is integrated with fabrics with a fiber diameter of 5 or more ^ Printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs (please read the note $ item on the back and fill in this page), and has an improvement as a partition The air permeability of the nonwoven fabric of the sheet material, the separation performance of the positive electrode and the negative electrode, and the prevention of short circuit due to the migration of the active material of the electrode or the broken electrode, etc. With the non-woven separator material ^,. However, this non-woven material has high-pressure water sprayed on its surface to generate through holes, which cannot sufficiently improve the performance of preventing migration of the electrode active material. In addition, in order to reduce the through-holes, the method of stamping the non-woven material with rollers with different peripheral speeds is disclosed in Japanese Patent Laid-Open No. 5-8-9866. However, it is still necessary to eliminate the through-holes generated on the surface of the non-woven fabric. Difficulties / As disclosed in the aforementioned Japanese Patent Laid-Open No. 6 1-2 8 1 4 5 4 non-woven fabric, because it is a melt-blown ultra-fine non-woven fabric and dry woven mesh __) ____ This paper size is suitable for Chinese countries Standard (CNS) Α4 specification (210X297mm) ~ 308742 A7 _B7 _ V. Description of the invention (3) The non-woven laminate material of the two-layer laminate structure of the object, so the fiber of the hull layer is formed in the cross-sectional direction of the laminate material The surface area / density with the fiber layer is phase%, and the adhesion of the electrolyte will occur, so it is likely to cause an increase in the electrical resistance of the battery. In addition, the non-woven layer of the melt-blown fiber; due to the spinning of the fiber The uniformity of the unit quantity is degraded by the method / so the migration of the active material cannot be suppressed in the part where the unit quantity is thinner, so there will be a problem of short-circuit resistance \ and because of the The recharge volume change of the charging and discharging electrode is easy to sag, so it may cause the occurrence of electrolyte and reduce the performance of the charge and discharge cycle of the secondary battery. 〇 Japanese Patent Laid-Open No. 5-7 4 No. 4 4 Gazette, which discloses a mixed layer of short fibers, heat fusible fibers and synthetic slurry, after fluid treatment is applied, I / is achieved by fusing the heat fusible fibers and synthetic slurry fibers Non-woven materials that improve short-circuit prevention performance, electrolyte retention performance, and mechanical strength. This attempt is to heat-treat fusible fibers / thus damaging the fiber form of the synthetic slurry. Reducing the surface area of the fibers within the structure of the nonwoven system leads to an increase in fiber spacing, and the interior of the spacer is printed by the Beigong Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economy ^^ 1- i ^ i I. ^ N an * i ^ i In n ^ i In.-* (Please read the precautions on the back before filling in this page) The electrolyte formation is easy to migrate to the electrode and leads to an increase in the electrical resistance. 〇Japanese Special Special Kaiping 7-2 7 No. 2 7 0 9 It is a fibrous material with a fibrillar fibrous branched structure in the loose part of the through-hole of the interlaced fiber web obtained by the water flow interleaving process including the wet papermaking web formed by dividing composite fibers; for example, due to It adheres to synthetic slurry, etc., and improves the short-circuit resistance of the migration electrode active material. The paper standard is applicable to the Chinese National Standard (CNS) Α4 specification (210Χ297 mm) ~~ Ministry of Economic Affairs Central Sample Bureau Printed by the consumer cooperative A7 __B7___ V. Description of the invention (4) Pool separator, however, this separator, due to the surface layer of the interlaced fiber web, is due to a different fiber composition from the above-mentioned interlaced fiber web or The build-up of fibrous structures is the two-layer structure K that forms the individual scars of the fibrous web by intermingling the dense and dense spots of the aforementioned fiber web. The unbalanced retention of the electrolyte will increase the shortcomings. Ί Further, the fibrous material of the separator material: the fibrous material itself, and the interlaced density of the fibrous material and the interlaced fiber web become smaller, so it is easy to fall off. In addition, when heat treatment is performed on the interlaced fiber web to adhere to the fibrous material, the shape of the fiber will be lost and the film will be thinned in extreme cases, which will reduce the retention performance of the electrolyte and damage the surface of the material. The problem of the uniformity of the electrolyte of the layer. In addition, in Japanese Patent Laid-Open No. 6-29 57 15 Gazette, the water flow is interleaved to treat fiber diameters of 3 to 10 vm, and the ratio of fiber length L to fiber diameter D (L / D) is 1 000 to 2000 gold After the wet sheeting of propylene short fibers is added to the ion, it is equipped with an excellent oxidation-resistant battery separator that is hot-pressed; however, this wet non-woven material is expected to have fibers fused by heat, etc. The three-dimensional interlaced structure of the fiber is not fixed, because of the tension of the battery during assembly, or the separator is compressed due to the expansion of the electrode plate, which causes the problem of electrolyte depletion. In addition > water flow interleaving is implemented by a method that does not shake the nozzle head, so many continuous trajectory stripes are found on the surface of the nonwoven fabric in many directions, so the uniformity of the material interlace is degraded. For the uneven stripe part of the battery separator, it is worried that migration activity will occur. This paper standard is applicable to China National Standard (CNS) A4 specification (210X297mm). -Must- (please read the precautions on the back first (Fill in this page) Packing. 308742 A7 __B7_ printed by the Employee Consumer Cooperative of the Central Escalation Bureau of the Ministry of Economic Affairs V. Description of the invention (5) Substances etc. and reduced short-circuit resistance / [The role of invention] Solve the aforementioned problems of the non-woven material for battery separators that have been described above in the background art / and provide a wet non-woven fabric that represents a high level of performance as a battery separator material / The more specific object of the present invention is It has improved gas permeability / electrolyte retention, liquid absorption rate and other properties / and provides high tensile strength and high unit Wet non-woven fabric with a uniform structure of children. The other specific object of the present invention is to significantly reduce the occurrence of short circuits due to the migration of active materials, and it is relatively difficult to cause the depletion of the electrolyte. The separator used makes it possible to make a high-capacity secondary battery with a long charge-discharge cycle life. The aforementioned object f of the present invention is basically at least one type of thermally fusible short fibers 20 to 9 5 wt% of at least one of three-dimensional three-dimensionally interlaced single fibers having a diameter of 20 Mm or less and thermally fusible short fibers / the aforementioned short The average distance between the intersecting points of the fibers is 300 or less > and at least a part of the aforementioned heat-fusible fibers are characterized by a wet-type separator for a battery in which a single non-woven structure layer is fixed after heat fusion and then between the fibers It is achieved without weaving / The so-called staple fiber of the present invention is selected from the fiber material of the possible length wet-processed / but it is desirable to satisfy the fiber length (L mm) with the denier of the single fiber ( Denier fiber unit) The texture ratio expressed by the ratio of the diameter of the circular cross section calculated next time (I) (please read the precautions on the back before filling this page) to bind.

-U This paper standard is universal Chinese National Standard (CNS) A4 specification (210X297mm) Printed by Aigong Consumer Cooperative of Central Bureau of Standards of the Ministry of Economic Affairs A7 ____B7 _ 5. Description of invention (6) (L / D) is 0.5X103 ~ 2. The scope of OxlO3. D = yC4d / (^ xgxl〇5Xp)) xlO (I) (where D is the diameter represented by wm; p is the density represented by g / cm3 of the polymer forming single fiber, d Is the texture of the single fiber expressed by denier; π is the pi.) However, the thermoplastic single fiber is selected from synthetic thermoplastic polymer fibers; thermal fusion The fiber / system is selected from thermoplastic polymer fibers that have a melting point lower than the melting point of the aforementioned synthetic thermoplastic fiber by about 20 ° C. The nonwoven fabric for the separator of the battery of the present invention is basically a system The blended fibers of the aforementioned thermally fusible short fibers hold 20 to 95% by weight of thermoplastic short fibers and the remaining short fibers>. The wet nonwoven fabric of the present invention is a system in which three-dimensional three-dimensional interlaced fibers are randomly interlaced in the cross section of the nonwoven structure; and at least a part of the thermally fusible short fibers forming the i-fault structure are followed by the thermoplastic short fibers It is fixed to this nonwoven structure #. In the present invention, the so-called average fiber intersecting point distance / system is a method described in Japanese Patent Laid-Open No. 58-191280, page 443, lower right column, line 8 to page 4, 444, upper left column, line 2 Based on the measured interwoven density scales of the nonwoven fabric structures, the scanning of the electron microscope is used to enlarge the constituent fibers on the surface of the nonwoven fabric for observation. f2), (This paper standard applies to China National Standards (CNS) A4 specification (21QX 297 mm) (Please read the notes on the back before filling this page) Binding · Order A7 Printed by the Staff Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs B7 5. Description of the invention (7) f 3) ...... (fn) The intersection of any two (fi) and (f2) with (ai) ', the fiber (f2) formed on the top to form Pass through the intersection point under the shape under other fibers; the intersection point is taken as (a2); find the straight horizontal distance between the interlaces (ai ~ a 2), and use it as the distance between the interlace points ; The same find the distance of 50 interleaved points, with the arithmetic average The value indicates about any other pair of fibers. However, it means that the smaller the scale is, the tighter the interlace is. The wet non-woven fabric for battery separator of the present invention is a three-dimensional three-dimensional interlaced structure with an average fiber intersecting point distance of less than 3 0 0 in the above-mentioned single-fiber diameter of less than 20 fibers, which has a tight three-dimensional staggered structure. There is a unique uniformity of wet nonwovens formed from short fibers / at the same time to solve the shortcomings of wet nonwovens caused by the lack of strength, 'Because there is a uniform material that is not available in the past, it is a thinner unit. The sheet 〆 can also suppress the migration of the electrode active material and therefore considerably improve the return short-circuit resistance and the cycle performance V of the secondary battery for charge and discharge. In addition, the strength is strong. It is possible to make the unit amount of the battery separator thinner. Because it is possible to assemble a large amount of active material of the component electrode into the battery, the battery capacity can be increased. Further, the battery separator of the present invention "Sheet" is because the internal conductive impedance as the battery separator is low, so the charging voltage of the secondary battery becomes low; and the superior performance of obtaining a higher discharge voltage is exerted \, which is considered to be caused by the average fiber intersecting point The interleaved structure with an inter-distance of less than 300 °; the nonwoven fabric of the present invention has a higher compression resistance. Therefore, the resistance of the electrode thickness when the primary battery is charged and discharged when the battery is charged and discharged is stronger. The compression of the electrode separator increases the cost The paper standard is in accordance with the Chinese National Standard (CNS) A4 (21QX297mm) (please read the notes on the back before filling in this page). Pack. Order A7 ______B7 Five'Instructions for the invention (8) Internal impedance, while reducing the spacer Problems with the electrolyte inside are more difficult to occur. However, the performance of these is below 2 50 / zm, and further below 200 / zm or lower than these, which will significantly increase the average fiber interleaving distance. Therefore, when the distance between the interlaced points of the fibers of the present invention is less than 3 ΟΟμιη, the degree of interlacing of the fibers is low, and the effect cannot be exerted, as a characteristic of the battery separator as described above. Printed by the Industrial and Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs. The wet non-woven fabric for battery separators of the present invention is characterized by whether the high-frequency cylindrical water flow achieves the three-dimensional interlacing of short fibers. The trajectory streaks / overflows caused by the columnar water flow, because the fiber layer is subjected to high-pressure columnar water flow treatment, the nozzle that sprays the water flow moves relative to the fiber layer. Continuous fringes; fine observation of the continuous track fringe is formed in the shape of a concave part f, and a slight fiber deviation of continuity formed from the part of the convex part occurs in the nearest vicinity. Therefore / Wet non-woven fabric with fine continuous tracks staggered by such water flow on the surface is suitable for spacers / Then the movement of active substances etc. is caused from the concave part of the continuous track of a smaller amount of fiber unit, and it causes resistance Because of the reduction of short-circuit properties, the wet nonwoven fabric of the present invention is actually not recognized as the above-mentioned track record, because it is quite uniform; therefore, as a battery separator, especially a low unit amount of wet nonwoven fabric is suitable for high capacity In the case of a secondary battery, it can also exhibit excellent short-circuit resistance and long-life cycle performance. "The wet non-woven fabric for battery separators of the present invention (^ is characterized by uniformity per unit amount and its texture The organization index is ideally less than 100 / more ideally less than 8 0 j-(φ- (please read the precautions on the back before filling in this page) This paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) A7 ___B7 printed by the Beigong Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of the invention (9) The so-called sheet formation index of the present invention is to form a wet-type nonwoven fabric. The dispersion state of the dimension to the uniformity of the fiber distribution 丨 and the number of flats containing non-woven fabrics; the comprehensive nonuniformity evaluation index j of thickness, density, etc. It is known that there are various methods of measuring the texture index; but in this The invention refers to the paper "The Evaluation of the Structure of the Texture of the Paper with a Void" (Paper No. 1), based on the paper by the PA PA Technology Association Vol. 4 No. 7 page 7 8 ~ page 9 3, page 2 The principle of the "image analysis type texture structure type (C)" described in "Evaluation of the texture texture meter" is measured by the commercially available tissue test meter (FMT-10000A, Nomura Corporation) described later. "Texture texture coefficient", "The texture texture index," which appropriately represents the imbalance of the unit quantity of the micro-units of the non-woven fabric, and is a substitute value for uniformity. "The smaller the value is, the lower the non-woven fabric distribution is. The higher the sex / the texture index exceeds 100, the unevenness of the small unit amount of spots becomes larger > therefore, the passing phenomenon of the electrode active material from the relatively thin part of the unit amount can not be suppressed. 8Ω] The internal short circuit may cause problems such as shortening the cycle performance times of the secondary battery. In addition, the wet non-woven fabric of the present invention ^ [its conductive impedance is ideally 1.0 Ω or less) is more ideally 8 Ω] When the conductive impedance is 1.0 Ω or more, the charging voltage of the secondary battery becomes high / 'and the problem of the predetermined discharge voltage cannot be obtained. Furthermore, the wet nonwoven fabric of the present invention | {compressive stress has 3.0. kg / c rri > the resistance to the expansion of the electrode during discharge is large, the battery separator is difficult to collapse; more preferably, the compressive stress is 3.5 kg / The paper size is applicable to the Chinese National Standard (CNS) A4 specification ( 210X297mm) ~ ~~-¢ 2-(Please read the precautions on the back before filling this page)

.1T Mirage 308742 A7 B7_ V. Description of the invention (i〇) ciri or more. When the compressive stress is 3. Okg / cnf or less, 9 V will collapse the separator due to the compression of the internal electrodes of the battery during the charge-discharge cycle, and there will be depressions and electrolyte depletion resulting in an increase in internal resistance. Question} [Unit quantity of the wet nonwoven fabric for battery separators of the present invention: 10 to 3 50 g / rri, ideally 25 to 150g / rri, more preferably t 9 is 35 to 100g / iri]. In addition, its thickness is 3 0 ~ 1 000; am, ideally 70 ~ 400 / · ίln, more preferably 90 ~ 250 // mj, the unit quantity is below 10 g / πί, and the thickness is formed below 4 0 because of the unit The amount is too small, so the strength is insufficient, and the passage of the active material cannot be prevented at all. In addition, the retention amount of the electrolytic solution is also reduced, which makes it difficult to use it as a battery separator. In addition, when the unit amount exceeds 3 500 g / rri, and the thickness is thicker than 100 mm, full fiber interlace cannot be obtained, and the conductive impedance also becomes larger, because more electrode active materials cannot be filled. There is a problem that batteries with a comparable charging capacity cannot be obtained. t Wet non-woven fabric for battery separator of the invention: basically from 2 to 9 5 wt% of one or more thermoplastic fibers, with a melting point that is 20 ° C lower than the melting point of the aforementioned thermoplastic short fibers Slurry of mixed fibers of thermally fusible short fibers / mixed layer made by papermaking method / conflicting fluid flow; after three-dimensionally interlacing the mixed layer three-dimensionally / fusing the heat-fused fibers by heat treatment Part or all of them can be manufactured] The aforementioned wet non-woven fabric with a uniform non-woven structure with a texture index below 100 is ideal for selecting the formation of a mixed layer based on the following concepts — »This paper size is suitable for Chinese countries Standard (CNS) A4 wash grid (2 丨 0X297mm) Λ -φ- i 0 -i- (please read note f on the back and then fill out this page) Pack. Order the Ministry of Economic Affairs Central Bureau of Samples and Consumer Cooperation Printed A7 printed by Beigong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economy. V. Description of the invention (11) Interleaved processing conditions of Cheng and short fibers made of columnar flow #. Since L / D short fibers in a specific range of the present invention are dispersed into a monofilament-like uniform fiber slurry to obtain a mixed layer with better texture, it is necessary to form a laminate. In fact, the greater the length of the fiber, the lower the dispersion of the fiber, resulting in deterioration of the uniformity of the texture. The limit concentration / system that can exist without separating the fiber-forming blocks into single fibers is proportional to the thickness of the fiber; it is inversely proportional to the length to the second power; therefore, L / D is used to exceed 1 5 0 0 The slurries of fibers with longer fibers are more difficult to have mixed layers with a texture index below 100. In addition, in order to prevent the deflection of the fibers of the fiber flow when the short fibers of the column flow are interlaced, in order to obtain a uniform interlaced layer with a texture structure index of 100 or less, the following points are the key points. Short fibers / fibers with L / D less than 500 are easy to move >: It is difficult to prevent fiber flow with columnar water flow treatment / In addition, to prevent fiber flow >, and not to leave continuous stripes due to the trajectory of columnar water flow / , The cylinder flow nozzle is located at the center of the shaking head and the distance between the conveying net and its middle position is approximately equivalent to 1 0 ~ 6 0 mesh gold mesh / take the columnar water flow into an intermittent water flow state and The method of three-dimensional interlace treatment of fibers under the continuous track stripes without sticking in the stick layer> However, v, from the lower part of the conveyor network, in order to quickly remove the treated water > so it must be quite attracted to dehydration > The interleaving treatment of the water flow draws a trajectory like a dotted line on the mixed layer and the surface of the continuous trajectory in the past has a uniform non-woven structure with virtually no residual trajectory stripes / At this time, the static pressure as suction dehydration is 3 0 OmmHg Above, #ideally is above -5 OmmHg, #more ideally is -80 mm Hg or above), it may suppress the fiber I paper size to apply the Chinese National Standard (CNS) A4 specification (21QX 297mm Ί ' (Please read the precautions on the back before filling in this page) 'Pack. Order

A Printed by the Beigong Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs A7 __B7_ V. Description of Invention (I2) The flow achieves a uniform interlacing of fibers at the same time. t Heat treatment 丨 is to maintain the state of the three-dimensional interlaced thermoplastic short fibers and the thermally melted fibers; at the same time, at the intersection of the thermoplastic short fibers and the thermally melted fibers, a part of the thermally melted fibers is melted and formed into thermoplastic short fibers. The fiber then holds the role of fixing the three-dimensional staggered structure J As mentioned above, is there no three-dimensional staggered at all? When the distance between the average fiber intersecting points is more than 300, and the heat treatment is performed in a relatively interlaced state, the intersection points of the thermoplastic short fibers and the hot-melt fibers are fewer, and the same fibers are formed in parallel j parallel state. Dissolved film, and distinguish it from the present invention; the distance between the average fiber intersecting points of the wet nonwoven fabric of the present invention is in the state of 3 0 0 // m; the fiber-fiber of the structure intersected by more three-dimensional The intersecting point melts and joins the heat-fused fiber, so as a result of being fixed as it is, it is necessary to have superior separator performance that exerts high compression resistance to the electrode, high electrolyte absorption, and low conductive resistance. Non-woven construction. , [Simple description of the drawing] ^ The first figure is a diagram showing the pattern of fibers constituting the nonwoven fabric when expanding the interlaced state of the fibers when viewed from the surface of the nonwoven fabric,), (f 2) '(f 3). ...... (f 7) represents single fiber / (a 1), (a 2), (aa) ...... (a7) represents the intersection of fibers / ο The second graph is for comparison The comparison shows that the charging capacity ratio of the secondary battery of the wet nonwoven fabric for battery separators of Examples 1 to 3 of the present invention has been assembled. The graph of the correlation between the charging capacity ratio and the number of cycles / This paper wave scale is applicable to the Chinese National Standard (CNS) Α4 specification (210Χ297mm) (Please read the precautions on the back before filling in this page) Packing. Order 15-Printed by the Ministry of Economic Affairs, Central Bureau of the Central Committee of the Ministry of Economic Cooperation 308742 at __B7_ V. Description of the invention (13> Figure 3 is The comparison with the relational comparative example shows the correlation between the charging capacity ratio and the number of times of charging of the secondary battery having assembled the wet nonwoven fabric for battery separators of Examples 6 to 8 of the present invention. Figure 4 is a representation of the model An example of the surface compressive load-displacement curve of the wet nonwoven fabric of the present invention that has been fluffed Fig. / [Best form for carrying out the invention] As a material for thermoplastic short fibers used in the present invention, thermally fusible short fibers \ Ideally, it is suitable for liquids such as electrolytes or acidic liquids. Durable materials. For example, t is nickel •, cadmium type w ′ town • hydrogen type, nickel: iron type, silver oxide ·%% \% | Sub-lead type as a representative of alkaline storage battery > Shape or cylindrical shape> The present invention is not limited to these types / but such I, when the electrolyte is alkaline, the ideal system is a polyethylene resistant polypropylene

Polyene series; I hold COOH; S03H ,, OH: COOM, S03M, OM (M is light, heavy gold) and other 7jT-based polyene series ;, nylon 6, nylon 66, nylon 610 , Nylon 612, Nylon 10, Nylon 12 and other polyamides, etc. 4; Polyparaxylylene terephthalate & Polyamides, etc., alone or in combination. Acidic batteries are used as electrolytes, and lead batteries are used as representative. In this case, it is desirable to use acid-resistant polyester terephthalate f, polyterephthalate polyisobutylene, etc. , Polypropylene, etc.

Department: Polyamides with hydrophilic groups such as CO〇H, S03H, 〇H, COOH, S03M% *, 〇M (M is light, heavy gold), etc .: Acrylic This paper scale is subject to China ’s national standard rate (匚Suppression) Eight-four cash (210 &gt; &lt; 297mm) (Please read the precautions on the back and then fill out this page) Pack. Order A7 B7___printed by the employee consumer cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs ) Acid-based batteries such as polyparaxylylene terephthalamide, polyenamines, etc., alone or in combination. , The thermal fusion fiber constituting the nonwoven fabric of the present invention has a thermal fusion temperature lower than the melting point of the thermoplastic short fiber by 20 ° C or more, so the case of two or more types of thermoplastic short fiber is better than the one with the lowest melting point Short fibers are ideally lower than 20 ° C or higher 丨 less than 20 ° C, the hot-melted fibers may melt a part of the short fibers when they are hot-melted / thus, the sufficient nonwoven strength for the purpose cannot be obtained &gt; In addition, there is a problem of lowering the retention rate of the electrolyte. As the heat-fusion fiber of the present invention, a sheath-core type used in the past, a heat-fused dry nonwoven fabric or a heat-fused wet nonwoven fabric, and an edge-to-edge type are listed. Composite fiber, # or single component form, etc./but from the point of high liquid retention, tensile strength and dimensional stability, especially the sheath core type heat fusion fiber is more ideal. For example, 'specific sheath core Type of thermal fusion fiber, which is alkali-resistant. The core component is nylon 6 6, the sheath component is nylon 6, or the core component is nylon 6 or 66, and the sheath component is nylon 6 1 2; '6 1 0 and other copolymer nylon and poly Alkenyl polyalkylene polypropylene ,,,;., And the core component is polypropylene, polyethylene sheath component of a combination. However, in the case of acid resistance, the core component is polyethylene terephthalate, polyisobutylene terephthalate, and other polyesters, and the sheath component is copolymer resin or polyethylene, polypropylene, and other polymers. Enene, which can be suitably used for the nonwoven fabric of the present invention of the present invention, is a blending ratio of heat-fused fibers of 5 to 80% by weight of the entire nonwoven fabric. Ideally, it is 10 to 70% by weight 9 t, the most ideal is 1 to 4 0 weight. This k-sheet scale is applicable to the Chinese National Standard (CNS) 8.4 cash (210X 297; f) (please listen first Read the precautions on the back and then fill out this page) Pack. Order A7 ___B7_ printed by Beigong Consumer Cooperative of the Central Prototype Bureau of the Ministry of Economy. V. Description of the invention (i5) If the mixing ratio exceeds 80% by weight, it will increase the adhesion between fibers and decrease The surface of the fiber can cause the retention rate of the lowered liquid, and the mixing ratio is less than 5% to form a reduced tensile strength>, and dimensional stability / such as the so-called nonwoven of the same short fiber intertwined by the tight three-dimensional The accommodating width caused by the pulling force causes the problem of electrode short circuit during the assembly of the battery, which is not suitable for use as a separator because it is easily damaged and thus causes the depletion of the electrolyte, etc. The thermoplastic short fiber of the present invention; The diameter of the wire must be less than 20 Mm in terms of gas permeability, short circuit prevention, and liquid retention. Ideally, it is 1 ~ 2 0, and more preferably 2 ~ 2 0. gas The transition is incomplete. If the distance between the filaments is too long when it exceeds 204 m, the short-circuit prevention performance will be deteriorated, so the purpose of the invention cannot be achieved. ^ In accordance with the present invention, in order to obtain a high-performance wet nonwoven fabric for battery separators Therefore, when the monofilament diameter of the thermoplastic short fibers is selected to be 1 ~ 8 // m, a tight and homogeneous separator is obtained, and it has the performance of short circuit to prevent the superior liquid-holding property of the i-energy plant. In addition, in order to be placed in a sealed secondary battery, the performance of the gas generated by the electrode reaction, the expansion of the electrode, and the expansion of the electrode are required. Therefore, the diameter of the monofilament 1 ~ 8 is mixed Thermoplastic short fiber and thermoplastic short fiber thicker than the short fiber, and combined with the three-dimensional tight interleaved superior short-circuit prevention performance Γ liquid holding performance, it is desirable to further improve the aeration and Compression stress. Furthermore, in this case, the diameter difference between the thermoplastic short fiber of 1 ~ 8 V m and the thermoplastic short fiber thicker than the short fiber; the denier (denier fiber amount) The paper size is applicable to the Chinese National Standard (CMS) A4 specification (210X297mm) (please read the precautions on the back before filling in this page). Packing. Employee Consumer Cooperation of the Central Bureau of Standards of the Ministry of Economic Affairs Du Yinze A7 B7 V. Description of Invention (l6) Unit) Denier The fiber of 50% or more is ideally 100% or more. For example, 0.5 denier and 0.8 denier, 0.05 denier and 0.08 denier, 0.5 denier and 1.0 denier. At this time, the entire nonwoven fabric of thermoplastic staple fibers with a monofilament diameter of 1 to 8 μm has an ideal composition ratio of 5 to 9 5 wt%, more preferably 1 0 to 9 0 wt%, and most ideally 2 0 to 8 0% by weight. When the composition ratio of the short fiber exceeds 95% by weight, the composition ratio of the thicker thermoplastic short fiber and the thermally fusible fiber becomes smaller, which causes a drop in mechanical strength, dimensional stability, air permeability, and the like. On the other hand, if the composition ratio of the short fiber is less than 5% by weight, the short-circuit prevention performance, electrolyte retention performance, and liquid holding performance are lowered, and the separator can be used in a wide range of applications, but it is not ideal for high-performance applications. For the case where the thermoplastic short fibers with a monofilament diameter of 1 to 8 μm of the present invention can also be directly spun, but they can also be made of composite fibers by the splitting or sea-islanding fibers called composite fibers, , Which is the mechanical force before forming the nonwoven fabric, &gt; dissolving and drawing out the short fiber with a monofilament straight S of 1 ~ 8 M m. The nonwoven fabric is formed by the wet method, or after the nonwoven fabric is formed, the mechanical force, It is also possible to dissolve and extract to form monofilament diameter of 1 ~ 8 μm. Wet uniform nonwoven fabrics with better texture index should be obtained; it is more ideal to use the ultrafine fibers or composite fibers obtained by the direct spinning as described above after ultra-thinning, as a material for nonwoven fabrics. The cross-section of the wire can be round or non-circular. When the cross-section of the monofilament is circular, the diameter is directly measured as the diameter of the monofilament; when the cross-section is irregular, the weaving dimension is determined by gravimetry (Denier's paper scale applies to the national standard of cap ( CNS> Eight 4 specifications (2lpx297 public celebration) One (please read the precautions on the back before filling in this page) Binding · Order A7 B7 ____ printed by the Beigong Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 5. Invention Instructions (17) Assume that the denier is a case where the monofilament is circular_, the average diameter of & obtained by the following formula represents # D = vrC4d / (^ x9xl05xp)) X 1 0 4 (I) (where D is the diameter of the single fiber (#M) ,,; 〇 is the density of the polymer constituting the single fiber (g / cm3), d is the fiber amount of the single fiber (denier), 7Γ is the pi). In addition, in the present invention The ratio (L / D) of the fiber length L (mm) to the monofilament diameter D (mm) of the thermoplastic short fiber and the heat-fused fiber is ideally satisfying 0. 5X103 ~ 2. OxlO3 ° L / D system is It is closely related to the interleaving of the same fiber. , The condition of less than 0.5 X 1 03 makes the conflicting fluid flow easy for the fibers to move and interleave, but the absolute number of contact points on the reverse side / fiber interaction is too small to form high strength; in addition / more than 2 The case of 0X103>, the movement of the fibers during interlacing is suppressed. The interlacing of the same fibers is reduced to form high strength. The degree of interlacing of fibers can be expressed by measuring the distance between the average fiber interlacing points. That is, the interlacing of the lifting fibers *, and the tight interlacing of the fiber monofilaments, the distance between the average fiber intersecting points becomes shorter and the distance becomes longer if there is less interlacing. The three-dimensional interlaced structure of the wet separator of the battery separator of the present invention is the same in the cross-section; the distance between the average interdimensional intersecting points must be 300. The paper size is applicable to the Chinese National Standard (CMS) A4 specification (21. X297mm) (Please read the precautions on the back before filling in this page)-Binding i Order 308742 The Ministry of Economic Affairs Central Bureau of Accreditation Employee's Consumer Cooperation Du Printed A7 B7 V. Invention Description (IS) below. It is ideally 2 5 0 / zm or less, and more ideally 2 0 ○ // m or less ’• The most ideal is 1 5 0 // m or less. The distance between the average fiber interlace points is taken in a tight interlaced form below 3 0 0 // m, which holds the unique uniformity of the wet non-woven fabric formed by short fibers, and successfully solves the shortcomings of the wet non-woven fabric The resulting lack of strength / results. The wet non-woven fabric for battery separators of the present invention, because it has a uniform texture structure that was not available in the past, so even a thinner unit amount of separator can also suppress the electrode active material. Migration (active material passes through the inter-fiber gap of the separator, and completely improves the short-circuit resistance and the recyclability of the secondary battery during charge and discharge. In addition, the strength is strong. It is possible to use the battery separator The unit quantity becomes thinner, and since it is possible to load the active material with more electrodes of this component into the battery, a high capacity ratio of the battery can be achieved * Furthermore, the battery separator of the present invention is due to the distance between the average fiber intersecting points It has a staggered structure of 300 or less. Therefore, the internal impedance of the battery separator is low. Therefore, the secondary battery has a low charging voltage and a high discharge power. The superior performance of the battery &gt; Furthermore, because of the high compression resistance, the resistance to the electrode thickness changes when the secondary battery is charged and discharged is strong, and the battery separator is compressed to reduce the electrolyte in the separator and rise inside Problems such as impedance are less likely to occur. Therefore, in the case where the distance between the fiber interleaving points of the present invention is more than 300, the degree of interleaving of the fiber is low, and the characteristics of the battery separator described above cannot be evaporated. Its effect. The wet non-woven fabric for battery separators of the present invention is characterized by the uniformity of the unit amount, and it is desirable that the texture index is less than 100 / more ideal (please read the precautions on the back before filling in This page) Binding-The size of the bound paper is applicable to China National Standards (CNS) A4 (21Q X 297mm). The Ministry of Economic Affairs Central Bureau of Accreditation Employee Cooperative Printing DuA A7 B7 V. Invention Instructions (19) Yes 8 0 The following 〆texture structure exceeds 100, the unit amount of spots will become larger, and the passage of the electrode active material from the relatively thin part of the unit amount cannot be suppressed, resulting in internal short circuit of the battery, which may cause reduction. Problems such as the number of cycles of the secondary battery, etc. In addition, the wet nonwoven fabric of the present invention preferably has a conductive impedance of 1.0 Ω and more preferably 0.8 Ω% _impedance is formed as 1_ 0 Ω or more. The charging voltage becomes higher; at the same time, there is a possibility that the predetermined discharge voltage and the like cannot be obtained; further, the wet nonwoven fabric of the present invention has a compressive stress of 3.0 kg / cm2 or more. The impedance is larger, it is more difficult to damage the battery separator β. It is more ideal that the compressive stress is above 3.5 kg / crri 丨 The compressive stress is formed to be below 3 .. 0 kg / crri <, it will be inside the battery after a period of time Broken separator; there is a depression and it will cause problems such as an increase in internal impedance: the unit amount of the wet non-woven fabric for battery separators of the present invention is Ϊ 0 ~ 350 is 10 ~ 350g / ni ^ ideally 25 ~ 150 g / rri, more preferably 3 5 ~ 1 0 0 g / crri. In addition, the thickness is 30 to 100 μm, preferably 70 to 4 0 0 / zm, and more preferably 90 to 2 5 0 βπ1 /. The unit quantity is less than 10 g / πί; the thickness is less than 40, because the unit quantity is too scarce and the strength is insufficient, and the passage of the active material cannot be completely prevented. In addition, the retention amount of the electrolyte is also reduced. Septa can cause difficulties. In addition, the unit volume exceeds 3 50 g / rri, and the thickness is more than that of this paper. The Chinese National Standard (CMS) A4 specification (2 丨 QX 2? 7mm) is applicable HI m--—I— ϊ 1 —I — L, ---: 1 (please read the note i on the back before filling in this page) Order- A7 ___E___ V. Description of the invention (2〇) 1 Ο Ο 0 // If the thickness is too thick, sufficient fiber cannot be obtained Interleaved, the conductive impedance also becomes larger, because it can not be filled with more electrode active material, so there will be a problem of not getting enough charging capacity. 7g / cm3 ， Regarding the battery separator of the present invention, the appearance density of the wet non-woven fabric calculated from the above unit amount and thickness is ideally 0.26g / cm3 or more, more preferably 0. 3 ~ 0. 7g / cm3, again More ideal is 0.35 ~ 0 6g / cm3; appearance density is formed to be less than 0.26 g / cm3, the gas permeability is high, but the electrolyte has insufficient liquid holdup. In order to facilitate the electrode Since the dissolution solution is absorbed, it is likely to cause a problem that the charge-discharge cycle performance becomes low when it is placed in a sealed secondary battery. On the other hand, if the appearance density is 0.7 g / cm3 or more, the air permeability is significantly reduced. Since the gas formed by the electrode reaction is difficult to move, it is easy to cause the performance of the cycle characteristics of the sealed secondary battery to decrease. The wet non-woven fabric for battery separators of the present invention is manufactured by copying. »Central Ministry of Economic Affairs, Central Bureau of Industry and Commerce Wu Gong Consumer Cooperation Co., Ltd. Du printing (please read the precautions on the back and fill in this page). In the treatment of water with intersecting water flow, the surface of the fiber surface formed by the spinning system is washed away by almost all of the washing, and the polymer of the thermoplastic fiber does not hold a hydrophilic group (COOH, S03H) , OH, COOM, S03M, 0M (Μ is light, heavy gold), etc.); the affinity for alkaline electrolytes is less; the hydrophilicity of the adhesion amount exceeds 2 wt% · high shedding to liquid absorption speed There are more electrolytes that are satisfied: due to the reattachment of the surfactant on the electrode plate, it is easy to produce the paper size stored in the separator over time. National Standards (CNS) A4 specification (210X297mm) ~ '-23-A7 B7 printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of invention (21) The problem of electrolyte migration to the electrode plate / surfactant Kinds 丨 General hydrophilizing agents can be applied, but ideally non-polar surfactants such as polyoxyethylene alkyl ethers, polyoxyethylene aryl ethers, etc. which have resistance to halide Ϊ indicate non-polar surfactants The hydrophilicity or lipophilicity of HLB is not particularly limited. Generally, it is 1 0 ~ 1 7; ideally, 1 2 ~ 16. Ideally, HL B is less than 1〇. The solubility of surfactants in water is extremely poor. On the other hand, it is used in combination with a solvent such as isopropyl alcohol, which complicates the manufacturing process. / · Surfactants with an HLB of more than 17 are lower than the intended hydrophilic properties, so it is difficult to use as the battery separator of the present invention. "The wet non-woven fabric for the battery separator of the present invention has cases where the surface is fluffed The electrolyte stored in the separator is more difficult to be sucked into the electrode to improve the electrolyte holding performance. &Gt; The fine pores of the fluff are used to find the effect of promoting the gas absorption reaction at the electrode. The type secondary battery shows more improvement in superior cycle performance and overcharge characteristics. The principle is unknown, but when the surface has fluff, the contact density of the nonwoven fiber and the electrode is improved, and the level of the monofilament constituting the fiber , &Gt; In the level of micron thickness and high density contact to the electrode V in the non-fuzzy part of the void is also very fine and discontinuous formation. As a result, the contact points of the raised fibers constituting the separator and the electrode are high-density and discontinuous at the same time, because they contain a lot of fine voids. Therefore, the migration of the electrolyte from the separator to the electrode is suppressed / therefore> ; For the compression caused by the increase in the thickness of the electrode with the charge and discharge cycle of the secondary battery also has the size of the rechargeable paper. The Chinese National Standard (CNS) Α4 specification (21〇Χ297 mm) is applicable (please read the note on the back Please fill in this page for details.) A7 _B7_ Printed by the Ministry of Economic Affairs Chugong Consumer Cooperatives of the Ministry of Economic Affairs A5 _B7_ V. Description of Invention (22) The ability to maintain electrolytes with counterbalances ", so the internal electrolyte generated by the migration to the electrodes The increase in impedance is relatively slow, so it has the effect of increasing the extremely high cycle life. "Furthermore, a tight discontinuous gap is generated between the wet nonwoven fabric for the battery separator having the raising of the present invention and the electrode &gt; In the case of nickel-cadmium sealed secondary batteries, the effect of oxygen absorption reaction at the gas-liquid-fixed 3-state interface is promoted, and it is considered to show improved cycle performance Effects of overcharging performance. Regarding the ideal range of the degree of fluffing on the surface, the results of quantitative evaluation of the length and density of fluffing were reviewed, and it was found that it can be expressed as a compressive stress in the thickness direction. ^ That is, the reaction stress at the position where the thickness of the non-woven fabric is isolated from the surface of the fleece completely down from 0.1 mm (hereinafter referred to as the fuzzing stress F) is larger and the fuzzing density is higher &gt;. On the contrary &gt;, the fluffing stress is smaller, the fluffing is shorter, and the fluffing density is also smaller. 3 The battery separator of the present invention has an ideal range of the fluffing stress F of 0.5 ~ 5 0 &gt;, more preferably 1. 0〜4.0, more ideally 1. 5〜40 / raising stress F is 0.5 or less because the amount of fluffing is less, and the length is also shorter / so it is not fully achieved and the reason is quite high as the purpose of the present invention Discontinuous contact of the density of fluff, &lt; The effect of controlling the migration of the electrolyte to the electrode is not complete. Otherwise, when the fluff stress exceeds 5.0, there may be other currency damage that causes fluff to fall off. Next, the method of manufacturing the wet nonwoven fabric for battery separators of the present invention will be described. · Prepare monofilament diameter D of 20 / zm: the ratio L / D of fiber length L (mm) to monofilament diameter D (mm) is 0.5xl03 ~ 2.0 ) 6 4 gauges / grid (210 father 297 mm) ~ -25-(please read the precautions on the back and then fill out this page)-Pack. Order Μ Printed by the Ministry of Economic Affairs Central Sample Falcon Bureau Beigong Consumer Cooperative A7 B7 5 Description of the invention (23) One or more thermoplastic short fibers of X 1 03 and heat-fused fibers are dispersed in water to prepare a slurry, and the slurry is formed to a concentration of 0.1 to 3% by weight. The ratio of the aforementioned L / D is in the range of 0.5 X 1 03 to 1.5 X 103, and a non-woven fabric with a more ideal texture can be obtained. Β For example, L / D such as thick and short staple fibers below 0.5 × 103

In the case of dimension, the papermaking layer must be uniform, but the short fibers are easy to move during the subsequent water flow interlace, resulting in silk flow phenomenon. Due to the uneven surface, there must be only a few unit marks with more intense and weaker strength. Layer., The texture index exceeds 100, the system is not ideal, and the L / D is formed to be 2.0 X 1 03 or more, which reduces the dispersion of short fibers: so the fiber coagulation increases due to the interlacing of fibers during the papermaking process. At the same time, scaly cloud-shaped unit volume marks and texture structure are formed to be 100 or more, which is an undesirable state: use long net type or inclined long net type, round net type forging machine The slurry was fabricated, and then the resulting mixed layer was loaded on a conveyor net and intersected by a cylindrical fluid flow sprayed from an upper nozzle. Here, the so-called fluid is ideally a liquid, but water is the most ideal from the viewpoint of ease of use, cost, and magnitude of conflict energy. Water pressure when using water; varies according to the type of raw yarn used and the unit amount of mixed layer, but in order to obtain sufficient interlacing between fibers, it conflicts in the range of 3 to 100 kg / Ciri ; The ideal is to make it conflict within the range of 3 ~ 50kg / cma. In the case of the same dimension, the lower the unit volume and the slower the processing speed, the lower the water pressure, and the higher the unit volume and the higher the speed, the higher the water pressure. In addition, the same single paper size is applicable to China National Standard (CNS) Α4 specification (210X297mm) (please read the notes on the back before filling in this page) -Installation-Order -26-30S742 A7 B7 Central Ministry of Economic Affairs Printed by the quasi-bureau of negative labor consumer cooperatives 5. Description of invention (24) Bit situation 1 / High water pressure treatment when the Young ’s ratio (\ Γοι ing rate:) is higher. Invented high strength. The nozzle for spraying water flow □ diameter is 0 0 1 1 mm. It is possible to use »1, but considering the surface cracks and perforation prevention of the build-up • It is ideally 0 0 5 0 3 mmt and more ideally 0 0 8 0 2 mm and Processed »1 The ideal range of the nozzle pitch is 0 5 mm 1 0 mm, but when the nozzle head is shaken as described below 9 If the nozzle pitch is narrow, the nozzle trajectory overlaps in the weft direction, which leads to the uneven marks of the weft segment Fiber flow • * It is formed as a texture mark 0 Therefore • The ideal range of the nozzle pitch when shaking the nozzle head is 1 1 0 mm and more ideally 2 5 mm β · The track shape of the water flow can also be parallel to the advancing direction of the mixed layer Straight shape • However, the ideal shape is the curved shape obtained by the rotary motion of the head with the nozzle installed or the reciprocating vibration of the right angle reciprocating in the direction of the stacking, especially due to Rotational movement causes the overlapping of the circular water flow trajectories of the overlapping layers. It is effective for each nozzle to increase the spray area of the accumulated water flow ► &gt; At the same time, it is difficult to find the water flow trajectory that reduces the value of the commodity Less marks 0 Further, the distance between the nozzle and the stacked conveyor network is 1 0 0 mm or less »Ideally 5 0 mm or less» Between the nozzle and the conveyor network 1 1 For example, 2 5 mm isolation by the conveyor network Inserted into the metal mesh of 1 0 8 0 mesh »1 The column flow of Liandi fm was changed to intermittent column flow and bulk flow)« Interleaved papermaking system to suppress the texture caused by continuous trajectories Marks t and maintain the initial uniformity of the copying layer, however, because it is sufficiently staggered, it can be called the most ideal form 9 »At this time, the nozzle head shakes The size of the paper inserted into the above 1 0 8 0 mesh is in accordance with the Chinese National Standard (CNS) A4 (2 丨 0X297mm) -27-A7 B7 printed by the Employee Consumer Cooperative of the Central Bureau of Economics and Trade of the Ministry of Economic Affairs Description (25) The metal mesh and the system are both implemented as the ideal form of the present invention. That is, when the nozzle head is inserted into the metal mesh without shaking, intermittent cylindrical water flow cannot be achieved, and a continuous straight water flow trajectory is formed in the opening state of the metal mesh directly under the nozzle, and at the same time The gold tufts cover the columnar flow, forming a state with no water flow trajectories, and it is impossible to form a wave-shaped trajectory to fix the nozzle head in the whole layer of the intermittent columnar water flow which is the ideal form of the present invention. 3. The shape of the gold mesh inserted into it by shaking is also considered. Considering the point of improving the interlacing of the mesh, the method of shaking the nozzle head and inserting the metal to fix it is more ideal. In this way, due to the interleaving process of the intermittent columnar water flow which is not a continuous wave-like curve-shaped trajectory, the wet-column flow interleaved nonwoven fabric achieves a texture factor of 100 0, preferably 80. Uniform texture. Furthermore, in order to quickly remove the treated water from the lower part of the conveyor network, sufficient absorption and dehydration are performed. At this time, the absorption and dehydration is more than-30 mm H g or more, ideally -50 mm H g or more, and more ideally _ 8 OmmHg or more, to suppress the weaving flow, while achieving fiber It is uniformly staggered and formed into an ideal form of high-strength wet non-woven fabric that meets the texture. For the water treatment method of the nozzle and the net layer, the method of spraying the water flow on the back of the surface can also be used. One-sided method is also available. In addition, “• The number of treatments can also be selected according to the purpose. Optimum conditions can also be used 〆 The water pressure conditions of the water flow treatment of these mixed lay-ups is to obtain sufficient fiber interlacing for the purpose and to make it uniform under the conditions Choose, but the paper size of the mixed layer of smaller unit volume such as 10 ~ 100g / crri is applicable to the Chinese National Standard (CNS) A4 specification (210X297 public shame);-: --_---- L 袭- I (please read the precautions on the back before filling in this page). Order A7 B7 printed by the Male Industry Consumer Cooperative of Central Central Bureau of Economics. 5. Description of the invention (26). "Ideally use 3 ~ 4 0kg / crri Hydraulic treatment on one side or both sides. With any condition, the interleaving treatment system is such that the distance between the average fiber intersecting points reaches 3 0 0 # m or less, ideally 2 Ο Ο β m or less, and more desirably, it must be interleaved up to 150 #m. In this interleaving process, the constituent fibers of the mixed layer are moved by water flow and intertwined with each other to obtain a strong combination. That is, the three-dimensional three-dimensional interlacing of short fibers and hot-melt fiber systems, and the interlaced system obtained by this is extremely strong. When the distance between the average fiber intersecting points exceeds 300, sufficient mechanical strength is not obtained. In addition, the fiber arrangement in the direction of the non-woven fabric cross section is insufficient, so there is insufficient compressive stress, and the conductive impedance also becomes high, and There are no available battery separators for practical use. Then, "use the interleaved layer obtained by the heat treatment to melt and melt part or all of the fiber smoothly." The heat treatment conditions do not compromise the gas permeability or the retention rate of the electrolyte, so it is more ideal to use a non-contact &amp; air dryer for a short time of 5 seconds to 10 minutes. The heat treatment temperature is heat Above the melting point of the fused fiber, t is set at a temperature below the melting point of the short dimension, 〇 Due to the above heat treatment I, the state of the three-dimensional interlaced thermoplastic short fibers and the heat fused fiber is maintained x, while at The intersection of the thermoplastic staple fiber and the thermal fusion fiber melts a portion of the thermal fusion fiber and the thermoplastic staple fiber and the fiber follow. 1. As mentioned above, are there any three-dimensional interlaces? In the case of an incomplete interlaced state with an average fiber interleaving distance exceeding 300, the paper standard is applicable to the Chinese National Standard (CNS) A4 specification (210X297mm) (please read the precautions on the back and fill in this page) Printed by the Ministry of Economic Affairs of the Central Standards Bureau Staff Cooperative Society 11 A7 B7 V. Description of the heat treatment (27) The intersection of thermoplastic short fibers and hot melted fibers is less, the same fibers are formed in parallel state The melted film / is distinguished from the present invention. Therefore, the present invention is due to the fact that the average fiber intersecting point distance is 3 0 0. There are many interlaced points in the three-dimensional structure. As a result, it is the result of being fixed as it is, so it is considered to be able to exert excellent separator performance, such as high resistance to compression of the electrode, high electrolyte fluidity, and low conductive resistance. The new type of non-woven fabric obtained in this way can be used, for example, for battery separators, etc., but when the thickness adjustment is necessary, it can also be pressed with a roller dryer or embossing machine. At this time, it is necessary to select conditions that will not extremely reduce gas permeability and electrolyte retention. In addition, in order to improve the initial affinity with the electrolyte, it is desirable to apply a hydrophilic treatment. Hydrophilization treatment is generally a method of attaching the surfactant used, and can be carried out by acid sulfate treatment; fluorination treatment, plasma treatment, corona discharge treatment and other methods I. t.- The order of the crimping process and the hydrophilization process of the roller press or embossing machine, etc., may be the first treatment of the present invention, but if it is made to have a more uniform hydrophilization process, After the hydrophilization treatment, it is desirable to perform the crimping treatment. \ That is, when the hydrophilization treatment is carried out after the crimping treatment, because the formation of treatment spots on the fiber surface is easy to cause, it is easy to produce electrolyte-soaked spots: Some wet nonwoven fabrics obtained by this method are effective Applied to the separation of positive electrode and negative electrode * prevention of short circuit ", retention of electrolyte, other requirements for secondary batteries are required to have gas permeability, or due to repeated charge and discharge. CNS) Α4 specification (210X297mm) — ~ -30-(please read the precautions on the back before filling in this page). Packing. Order 308742 A7 B7 5. Description of the invention (28) The performance is reduced to smaller performance The use of battery separator. (Please read the precautions on the back before filling in this page) The wet non-woven fabric of the present invention, under the characteristics as described above, is used in the negative electrode using lead, and the manganese battery using manganese dioxide in the positive electrode. The electrolyte uses alkaline alkaline manganese batteries, etc. "It can also be used as a separator for primary batteries. • It can be used for recharging and discharging." Separator for secondary battery *. The representative battery of the Ministry of Economic Affairs Central Bureau of Standards and Consumers ’Cooperative Society is a representative battery for secondary batteries. It has sulfuric acid as the electrolyte, and a lead storage battery formed with lead as the negative electrode and alumina as the positive electrode. Nickel formed by oxidizing nickel with cadmium, positive electrode and oxygen in water, • Cadmium-type plutonium battery, and cadmium instead of negative electrode are replaced by nickel with iron powder, • Iron-type alkaline storage battery, and hydrogen (hydrogen storage) is used for negative electrode (Alloy) nickel, hydrogen type alkaline storage batteries, and the separator of the present invention is suitably arranged in these secondary batteries, and may be applicable conditions. The required performance of the secondary battery is that it contains the same starting power as the primary battery, and the internal resistance becomes smaller. • The unit mass of each battery. The volume has a larger charging capacity and smaller self-discharge. Etc., and in particular require higher charge-discharge cycle performance, and higher over-charge and over-discharge performance without performance degradation during over-charge. Perhaps the decomposition of water at the time of charging suppresses the generation of oxygen or hydrogen. Therefore, the consumed condition is sealed. The above-mentioned representative secondary battery is a sealed secondary battery and is used as a portable The power supply of the type machine. In the case where a simple sealed hermetic secondary battery is provided with a separator, the non-woven fabric is stretched to a longitudinal direction with a certain tension and compressed to be packed in the thickness direction. Therefore, the ability to keep the electrolyte inside the separator in a compressed state and having a porous structure and resistance to extremely high hydrophilic electrodes is particularly required%. Furthermore, as the paper size is applied China National Standards (CNS) A4 specification (210X297mm) -31 A7 printed by the consumer cooperation of the Central Bureau of Standards of the Ministry of Economic Affairs A7 ____B7_ V. Description of invention (29) The change of the body plate caused by repeated charging and discharging (due to water oxidation The density change of nickel and nickel oxide in one oxygen water), and the electrolyte migration from the separator to the electrode is because it is easy to cause the electrolyte in the separator to dry out (dry out), so in order to prevent this depletion is required to be sufficient Liquid retention performance, but the wet non-woven fabric of the separator of the present invention is superior in liquid retention and liquid holdup, and because it is possible to maintain sufficient electrolyte inside the compressed separator, it is suppressed The internal impedance rises, and a secondary battery with high cycle life can be provided. In addition, during charging, oxygen is generated at the positive electrode due to the hydrolysis of water and increases the internal pressure of the battery. However, the generated gas quickly passes through the separator and must be consumed by the oxygen absorption reaction at the negative electrode. The wet non-woven fabric separator of the present invention has excellent gas permeability and moderate wetting characteristics on the surface, suppresses the increase in internal pressure during overcharge, and provides protection against blowing of electrolyte due to the operation of the safety flap Superior secondary battery. In addition, it is required to withstand short-circuit prevention performance (short-circuit resistance) ^ for excessive recharge and discharge, but has a uniform and tight interleaved structure, and the separator of the present invention without texture marks prevents breakthrough of electrode activity Materials and separators such as dendrites that are precipitated to the plate in charge and discharge poems, and can provide a long-life secondary battery; In addition, due to the rapid evolution of portable appliances, and miniaturization, Therefore, the secondary batteries that supply power to these appliances are also required to be miniaturized and high-capacity; extend life and cycle performance '. For high-performance batteries that provide these appliances, the performance of battery separators is burdened Has a greater impact. That is, in order to achieve a higher capacity of the battery, it is necessary to fill more electrode active materials, and the inevitable battery separator is required to be thinner in unit volume. • Thinner thickness. Therefore, for thin unit volume, thinner spacers are required to be superior. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (21〇X297 Gongqing) (please read the precautions on the back before filling this page) Ding-32-Printed A7 _____B7_ by the Consumer Labor Cooperative of the Central Department of Economic Affairs of the Ministry of Economic Affairs 5. Description of the invention (3〇) The liquid holding capacity of the electrolyte, gas permeability, short circuit prevention performance, but the wetness of the present invention Type non-woven fabric, * Because it has the characteristics of uniform texture without unevenness under high strength, superior liquid holdup, etc., it is completely suitable for use and must have such a high-performance secondary battery. [Examples] The present invention will be described in more detail with the following examples. In the examples, the measured value is measured by the following method, and% is all by weight. , The test sample that affects the temperature and humidity, placed in a standard state (temperature 23 3 ± 3 ° C, relative humidity: 65 ± 5%) in the room or in the device, and adjust the state of the sample. 9 1 / thickness: Take three test pieces # 2 of 2 X 2 0 C m in size, use a micrometer to measure each of the 10 different spaces, and indicate the average value: 2 / unit amount: will be used in After the thickness of the 2 Ο X 2 0 cm test piece is adjusted to the standard state, the weight is measured, and each is converted into a weight per square meter (unit volume). , 3 / Tensile strength (longitudinal direction) Based on J I S-1 0 9 6 stripping method, measure the longitudinal (going) direction of the nonwoven fabric &gt;. Take 5 test pieces (length in longitudinal direction: 1 8 cmx) The paper size is applicable to China National Standard (CNS) A4 specification (210X ^ 7mm) '' -33-(please read the precautions on the back before filling this page ) Binding · Order 3D8742 A7 ______B7___ 5. Description of the invention (3 horizontal direction: 2.5 cm) / Grip interval: 10 cm, pulling speed (please read the precautions on the back and fill in this page) Degree: 2 0 〇mm / min f, use the tensile speed tester to measure the maximum load of the test piece that is cut off. 4 / Gas passability (based on the JI SL1096 brittleness method; take 5 test pieces of 13x13 cm or more) .. Measurement of differential pressure 12. 7 mm aq Ventilation rate 5 / Liquid retention rate Take three test pieces cut into a square of 10 cmx 1 〇cm 〃 After adjusting to a standard state to measure the weight (Wi) / Secondly, spread in a 3 1% aqueous cadmium oxide aqueous solution and immerse it for more than 1 hour / pull it from the liquid and hang the corner of the square upward for 10 minutes, then measure the weight of the test piece (W2), ， Calculate (W2 —Wi) / W3 X 1 0 0 of the liquid holdup rate (%) and evaluate the liquid holdup / Ministry of Economic Affairs Printed 6 / liquid aspiration speed printed by the quasi-bureau of Pongong Consumer Cooperatives. Take 5 20 cm x 2 · 5 cm test pieces and adjust to the standard state. The bottom 5 mm of the test piece is vertically immersed in 3 1% water oxidation Potassium aqueous solution; the rise height (mm) of the water potassium oxide aqueous solution is measured by capillary phenomenon after 30 minutes; evaluate the liquid absorption rate / 7 / liquid liquid holdup rate The paper scale is universal Chinese National Standard (CNS) A4 specification (21〇 Χ297mm) A7 _____B7____ printed by the Staff Consumer Cooperative of the Central Department of Economic Affairs of the Ministry of Economic Affairs 5. Description of the invention (32) Two test pieces cut into a shape of 3.4 cm x 5 cm and adjusted to the standard weight shall be measured until lmg Weight (ai), followed by keeping the same amount (ai) of 3 1% concentration of water potassium oxide aqueous solution. Place the test piece on filter paper (ADVANTEC, No. 4A) and hang load 100 g., Measure the weight (a2) of the test piece after 30 seconds. Calculate the a2 / ai x100 of the liquid holdup rate (%), and evaluate the liquid holdup performance 〇8 / texture structure index j. To organize the tester (FMT-1000A: Nomura Shoji System) for the measurement. Take three 15 cm x 15 cm test The film is irradiated with a tungsten current of a constant DC voltage (6 V 3 0 W) from below the sample placed on the diffusion plate. The CCD camera is used to decompose the transmitted image in the range of 1 OOmmX 1 0 Omm into 1 2 8 The pixels of X 1 2 8 * measure the intensity of light received by each pixel, and calculate the amount of light absorption from the transmittance. , The texture system is the value of the standard deviation (σ) of the standard deviation (σ) of the absorbance of each small part (0.78mm × 0.78mm) in the sample measured by the average absorbance (E) ^, the most extreme expression Small unit component imbalance, the smaller the value, the higher the uniformity •, it can be said that the texture is better

Texture index = 1000xp / E 9 / conductive impedance, injection of a test piece at 3 · 4 cm x 5 cm is equivalent to the weight of the test piece. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (please first Read the precautions on the back and then fill out this page) Binding-Order 308742 A7 ____B7__ printed by Beigong Consumer Cooperative of the Central Bureau of Economic Affairs of the Ministry of Economy V. Description of the invention (33) Volume 9 0% 3 1% K0H aqueous solution, thickness 3mm After the nickel plate is sandwiched, the conductive resistance / 〇1 0 / compressive stress is measured with a small resistance meter under standard conditions: Compress the 5mmx5mm test piece (20 ° C, 6 5% RH), using the KES-F system The compression tester measures the stress when the thickness reaches 80% of the initial thickness, as the compressive stress. 11 / Test for determination of fluffing stress F: The surface compressive load-displacement curve (Figure 4) of the sample with soft pig hairs reversely trimmed to the fleece surface is measured with a KES-3 compression tester. The thickness of the sample with the load of 7 g / crri falling and raising is taken as the sample thickness, and the stress at the thickness of the sample plus +0.1 mm is read as the raising stress F. , T.- 12 / distance between intersecting points: The distance between intersection points here is the value / expression measured by the following method disclosed in Japanese Patent Laid-Open No. 5 8 -1 9 1 2 8 0 The smaller the value, the closer the interlacing, as a measure of the interlacing density of fibers. Fig. 1 is an enlarged schematic view of the nonwoven fabric laminated constituent fibers of the present invention viewed from the surface. , Set the composition to be f 1 'f 2' f 3.. ....... will intersect any of the Z fibers, the point of f2 is at a 1, and the f dimensional f 2 above is at other dimensions The shape of the following is the size of this paper. The standard of China National Standard (CNS) A4 (210X297mm) is applicable ------ ^-(please read the precautions on the back before filling out this page). Order-36-Ministry of Economic Affairs A7 _____B7__ printed by the Beigong Consumer Cooperative of the Central Prototype Bureau V. Description of the invention (34) The point of intersection in the past, the point of intersection is set to a2. The same is set to a3 $ 'a 4 ....... Next, the straight horizontal distances ai to a2 and a2 to a3 between the provided intersecting points are measured in this way, and the average of these measured values is obtained, and this value is used as the distance between the intersecting points. 1 3 / Battery cycle characteristics test .:

The battery separator of the present invention was used to make a sealed-type nickel of nominal size accommodating 1.2AH in SC, and cadmium secondary batteries were tested for 100 cycles, «the conditions at this time, with a current of 1.8 A After charging for 1 hour, the battery was discharged with a current of 1.2 A to a termination voltage of 1.0 V. 14 / Battery overcharge characteristic test

The battery separator of the present invention was used to make a sealed nickel-cadmium secondary battery of SC size with a nominal capacity of 1.2 AH, and 100 pieces were tested for overcharging characteristics. After charging for 1 week; the percentage indicates the number of electrolytes (with phenylethylene) indicating the leakage of the safety valve of the secondary battery. 》 [Example 1] 80% fiber length L = 7.5mm of 0.5 denier (monofilament diameter D = 7.8 # m, L / D = 960) nylon 66 short fiber (melting point 250 ° C), 20% L = l0mm of 2 denier (monofilament diameter D = 1.4 lmm, L / D = 709) hot-melt fiber (UNIMELTUL — 61 brand name) (Japanese paper size Applicable to China National Standard (CNS) Α4 specification (210Χ297mm) (Please read the precautions on the back before filling this page)

、 1T Printed by 308742 A7 B7 of the Employees ’Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of the invention (35) Made by UNIGIKA, core: nylon 6 ′ sheath: copolymerization H)》, dispersed in water and adjusted to 1 % Concentration of slurry. , Obtain a mixed layer of 75 g / iri from the slurry with a tilted long wire paper machine. The obtained mixed layer was placed on a gold mesh with a mesh of 80 mesh, and moved at 12 m / min. The gold mesh was separated from the gold mesh by 50 mm above it, and was arranged at a nozzle pitch of 2 mm The nozzle head of the nozzle with a nozzle diameter of 0.5 mm is moved in a circular motion at 285 r. Pm, between the build-up on the gold mesh and the nozzle. • Insert the metal mesh with a 40 mesh hole from the metal mesh at a position of 25 mm , To spray water at a pressure of 30 kg / cma to collide the intermittent columnar water flow to the mixed layer. In addition, at that time, a static pressure of 8 OmmHg was used to dewater the suction from the lower part of the conveyor network: because the water on the accumulation layer was continuously and quickly removed, it did not cause the texture caused by the water flow trajectory or fiber flow to drop, so that Its interlaced short fiber, and heat fusion fiber. After performing the same treatment 6 times, the surface and the back surface of the laminate were inverted to give the same treatment 7 times. Then it was turned to the nozzle head with 420 rp m, the metal mesh between the stack and the nozzle was replaced from 40 mesh to 60 mesh and inserted again, the back surface of the diffusion water flow with a water pressure of 25 kg / cma The interleaved stacking was completed after two treatments. In the staggered layer; the continuous trajectory of the columnar water flow is not found at all. The interlaced layer obtained by drying with a pin spreader dryer whose temperature has been set at 180 ° C will melt the sheath of UNIMELT UL-6 1 (melting point 140 ° C) between the interlaced layers smoothly at the same time. Secondly, for the purpose of improving the initial affinity with the electrolyte, it is impregnated with the non-polar surfactant Ber KP (Japan Takamatsu Oil Co., Ltd. for the paper standard applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling out this page)

、 1T A7 A7 Printed B7 by Employee Consumer Cooperative of Central Central Bureau of Economic Affairs of the Ministry of Economic Affairs V. Description of invention (36)) After 0.2% aqueous solution, 'dehumidify to make its adhesion rate to 20% of non-woven fabric, set by temperature Drying for a 160 ° C pin spreader-dryer. Then, the interleaved layer is guided to a pair of rollers heated to 100 ° C / rolling processing is performed at a linear pressure of 30kg / cm to obtain a unit quantity of 72g / rri and a thickness of 0.18mm of the battery. Separator with non-woven fabric. [Example 2] 40% fiber length L = 7.5mm of 0.5 denier (monofilament diameter D = 7.8 Am, L / D = 960) nylon 66 short fiber, and 40% fiber length L = 10 mm of 1.0 denier (monofilament diameter 1 1, L / D = 940) of nylon 66 short fiber, and 20% L = 10 mm of 2 denier (monofilament diameter D = 14. l // m, L / D = 709) hot melted fiber UNIMELT UL — 61 (manufactured by UNICHIKA Corporation, Japan) Core: nylon 6, sheath: copolymerized nylon dispersed in water from 1% concentration of silt Pulp, a mixed layer of 75 g / m was produced in the same way as in Example 1> Furthermore, interlace treatment was performed in the same way as in Example 1, surfactant was added, and rolling processing was performed in a unit amount of 7 2 g / πί, the thickness of 0.18mm surface must have non-woven fabric for battery separator without track stripes. [Example 3] As in Example 1, nylon 66 short fibers of 80% fiber length of 7.5 mm and 0.5 denier, 20% fiber length L = l〇 This paper standard is applicable to the Chinese national standard (cns ) A4 specification (21 〇X 297 mm) ---- One --- ^ ---- ^ Pack-- (please read the precautions on the back before filling out this page) Order the consumption of employees of the Central Bureau of Samples of the Ministry of Economic Affairs Co-printed A7 __B7_ V. Description of the invention (37) mm UNIMELT UL — 6 1 The mixed layer is mounted on a gold mesh with a mesh of 80. In addition to Example 1, the water pressure is 3 kg. / ciri is changed to 25kg / ciri, or 25kg / »crri is changed to 20kg / crri, and the interleaved layer is processed after the same method as in Example 1, and then the layer is applied in the same way as in Example 1. Addition of surfactant '• Rolling process to produce a uniform cell separator nonwoven fabric with a unit amount of 7 2 g / rri, a thickness of 0.18 mm, or no track stripes ϊ [Comparative Example 1] In comparison with Example 1 The same is made of 80% fiber length L = 7.5 mm of 0.5 denier nylon short fiber, 20% L = 10mm UNIMELT UL-6 1 (trade name) 1. The fluid flow treatment t described in Example 1 is not applied at all, and the heat is pressed under a condition of a temperature of 160 ° C and a pressure of 70 g / crri, and a needle set at a temperature of 180 ° C is used. The cloth spreading dryer successfully dissolves the UNIMELT UL — 6 1 (trade name) in the product ^. Furthermore, the surfactant was added in the same manner as in Example 1, and then it was rolled to obtain a non-woven fabric that could be used as a separator for a battery with a unit weight of 74 g / m2 and a thickness of 0.18 mm. , [Comparative Example 2] In the same way as Example 1, 80% fiber length L = 7.5 mm of 0.5 denier nylon 6 6 short fiber, .2 0% L = 10 — ______ This The paper standard is applicable to the Chinese National Standard (CMS) Μ specification (210X297mm) (please read the notes on the back before filling in this page). Packing and Ordering 40 Printed by the Staff Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs A7 ____ B7_ V. Description of Invention (38) mm UNIMELT UL — 6 1 (trade name) formed mixed layer is mounted on a 80 mesh metal mesh, in Example 1 except that the treatment water pressure 30kg / cm · is changed to lSkg / crri, or Other than changing 25kg / crri to 10kg / cma, the same process as in Example 1 was completed to complete the staggered layer J. The hull layer was added to the surfactant in the same manner as in Example 1, and then rolled. 5 denier (monofilament diameter) which can be processed into a non-woven fabric that can be used as a battery separator with a unit volume of 75 g / ni and a thickness of 0.18 mm / [Comparative Example 3] 80% weave dimension length L = 38 mm. D = 7.8em, L / D = 4870) nylon 66 staple fiber, 20% L = 5 1mm of 2 denier (monofilament diameter D = 14.1mm) hot-melt fiber UNIMELT U L -6 1 (brand name) (manufactured by Japan's U N I C H A K A company, core part f: nylon 6, sheath part: copolymerized nylon) mixed, with a lamella method || with a mixed layer. The mixed layer was interleaved in the same way as in Example 1, and the surface active agent was added to perform the rolling process so as to have a non-woven fabric that can be used in a battery separator with a unit amount of 7 3 g / c πί and a thickness of 0-8 mm. [Comparative Example 4] The same 45% fiber length as in Example 1 L = 7.5mm of 0.5 denier nylon 6 6 short fiber, 2 5% L = 1 5mm2 denier of UNIMELT UL-61 (commodity Name, 30% This paper is suitable for Zhongguan Household Materials (CNS) A4iUS (210X297mm) 11-41-(please read the precautions on the back before filling out this page). 308742 A7 ___B7__ V. Description of invention ( 39) The heat-fusible organic compound slurry SWP (UL-4 1 0: manufactured by Japan Mitsui Petrochemical Industry) formed of polyethylene is dispersed in water, and the slurry liquid with a concentration of 1% is treated in the same way with a paper machine The resulting mixed layer with a unit amount of 80 g / rri was subjected to the same water jet treatment as in Example 1 to obtain a staggered layer. ^ The same as in Example 1 was obtained by using a needle spreading at 180 ° C and drying. The interlaced layer; at the same time, the UNIMELTUL — 6 1 brand name sheath and SWP in the interlaced layer are melted smoothly (UL 1 4 1 0: melting point 1 2 5 degrees) , (Similar to the addition of surfactants, rolling processing, and can be used in a unit volume of 7 3 g / nff, a thickness of 0. 18mm battery separator. The first table is shown in the above examples 1 ~ 3 and The performance test results of the non-woven fabrics obtained in Comparative Examples 1 to 4 are used as battery separators. (Please read the precautions on the back before filling in this page) Binding, Ordering, and Printed Copies of Employees ’Consumer Cooperation of the Central Bureau of Economic Affairs of the Ministry of Economic Affairs The paper size is in accordance with Chinese National Standard (CNS) A4 (210X297mm) A7

B. Description of the invention (silicon) &lt; Table 1 &gt; Example 1 of Example 2 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Raw Silk Composition Printed by the Employees ’Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs ( L / D =) ft5dN66 (960) 0.5dN66 1.0dN66 (940) 0.5dN66 (960) 0.5dN66 (960) 0.5dN66 (960) 0.5dN66 (4870) 0.5dN66 build-up wet method wet method wet method wet method wet Wet Method Dry Method Wet Method Unit Weight (g / cm :) 72 72 72 74 73 73 72 Thickness (mm) 0.18 0.18 0.18 0.18 0.18 0.18 0.18 74 77 70 70 72 116 105 Tensile Strength (kg / cm) 3.3 3.5 3.1 2.0 2.4 3.5 3.2 Air surface transition (CC / cmVsec) 20 28 21 18 19 21 17 Liquid retention rate (¾) 330 345 333 310 315 335 270 Liquid retention rate ⑻ 90 87 89 62 63 79 68 Liquid sugar Absorbance (mm) 88 78 85 62 79 86 48 Compression stress (kg / cm3) 3.94 4.12 3.86 2.01 2.21 3.33 2.00 Conductive impedance ⑼ 0.65 0.70 0.69 2.10 1.56 1.10 3.5 Distance between intersecting points (um) 120 140 200 &gt; 350 320 150 305 The size of this paper is in accordance with the Chinese National Standard (CNS) A4 specification (210X 297mm) One day today one! ^ F * f-- i-1- ----- I! Ϋ (please read the precautions on the back before filling in this page) Order A7 _B7_ printed by the Consumer Labor Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs V. Description of invention (41) As you can see from Table 1, For the non-woven fabrics of Comparative Examples 1 to 2, the non-woven fabrics of Examples 1 to 3 have higher strength and lower conductive impedance, and have superior liquid flooding rate. / This is interpreted as the distance between the interlace points is formed from 1 2 0 to 2 0 0. The arrangement of the fibers due to the interlace process advances to the cross-sectional direction of the nonwoven fabric used as the spacer to increase the tensile strength and increase the interlace point, so The compressive stress is also increased, and due to the interaction of the improved adhesion between the separator and the nickel plate, the liquid holdup rate formed by the decrease of the conductive impedance and the increase of the crossover point is increased. Compared with the nonwoven fabric of Comparative Example 3 compared with the ratio of 1 ~ 2, the interlace density is higher, so the conductive impedance is lower, and the liquid holdup rate is superior, but compared with the example, there will be a problem of lower level 丨 This It is presumed to be due to the fact that the nonwoven fabric texture index of Comparative Example 3 is relatively large, and because the large amount of scars per unit actually forms a small contact area between the separator and the nickel plate. In addition, if the texture is poor, it may be found that the migration of the electrode active material cannot be completely suppressed: the problem of short-circuit resistance to the cycle performance of the secondary battery. (Refer to Figure 2) Using the nonwoven fabrics of Example 1, 2 or 3 and Comparative Example Ϊ: 2, 3 or 4 nonwoven fabric separators, a sealed SC with a nominal capacity of 1.2AH in SC size, cadmium battery ,, Check the cycle characteristics. The condition at this time is after charging for 1 hour with a current of 1.8 A; discharging with a current of 1.2 A until the end voltage of 1.0 V / representing the result in FIG. 2; using Examples 1 and 2 of the present invention The battery of the non-woven separator of 3 or 3 is smaller than that of the battery using the non-woven separator of Comparative Example 1, 2, 2; 3 or 4 / the battery capacity decreases as the cycle progresses, indicating an excellent cycle Performance; Comparative Example 1; 2 or 4 The paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) (please read the precautions on the back before filling this page). 308742 Central Ministry of Economic Affairs A7 _B7_ printed by the Bureau ’s Consumer Cooperatives. V. Invention description (42) The battery system reduces the electrolyte (dryout) in the separator due to the cycle of charge and discharge. The battery system of Comparative Example 3 is caused by the migration of the electrode active material. Short circuit affects life. In view of this, the wet nonwoven fabric of the present invention is considered to prove that, because of the uniformity of the texture and the tight interlace with a fiber structure of less than 300, it has excellent compressive stress and conductive impedance. The performances such as, liquid holdup, etc. lie in that during the charge and discharge cycle of the secondary battery, the electrolyte is difficult to absorb to the electrode j, and it is difficult to migrate the electrode active material. , [Example 4] By the same method as Example 1, 2.0 denier (filament diameter D = 14.lem, L / D = 1.06) with 7 5% fiber length L = 15mm 0) Nylon 6 6 short fiber; 25% hot-melt fiber UNIMELT UL — 6 1 (trade name) mixed layer. Further, the interleaving treatment, the surfactant treatment, and the rolling process t were performed in the same manner as in Example 1, to obtain a unit amount of 8 5 g &gt; rri, and a nonwoven fabric for battery separators with a thickness of 0.20 mm. 1 [Comparative Example 5] The same as Example 3, the 75% dimensional dimension length L = 1 5mm of 2.0 Denier (monofilament diameter D = 14.1Aim ^ L / Ds 1060) nylon 66 short fiber, UNIMELT UL-61 (trade name) of 25% L = l0mm of 2.0 denier (monofilament diameter 14. l / zm, L / D = 710) (CNS) A4 specification (210X297mm) (Please read the precautions on the back before filling in this page) Γ Order one -r; ^ --- I --- One 45-

T A7 B7 printed by the Ministry of Economic Affairs, Central Bureau of Preservation and Consumer Cooperatives V. The invention (43) The mixed layer is not subjected to the fluid flow treatment described in Example 1, at a temperature of 1 60 ° C and a pressure of 70 g / crrf Under the conditions of hot pressing / reusing, the needle spreader-dryer set at 180 ° C can dissolve UNIMELT UL-6 1 (trade name) in the layer smoothly. Furthermore, the same surfactants and rolling processes as those in the embodiment were applied to obtain 8 6 g / πί non-woven fabric with a thickness of 0.2 1 mm. [Comparative Example 6] 7% 5% fiber length L = 5 1mm of 2.0 denier (monofilament diameter D = 14.1 // m, L / D = 3600) nylon 66 short fiber, 2 5% L = 5 1mm of 2 denier (monofilament diameter D = 14. lem, L / D = 3600) hot melted fiber) UNI Μ ELT UL — 61 trade name (manufactured by UN I CHAKA Corporation, core part)丨 Nylon 6, sheath part: copolymerized nylon) mixed, and the mixed layer is obtained by the pattern method. The laminate was subjected to interleaving treatment in the same manner as in Example 1; a surfactant was added and re-rolling processing was performed to obtain a non-woven fabric with a unit amount of 84 g / rrf and a thickness of 0.20 mm. [Example 5] 80% fiber Length L = 1 5mm of 2., 0 denier (monofilament diameter D = 14.lem, L / D = 1060) of nylon 6 / nylon 6 1 2 (80: 20) core petal type 6 split composite Staple fiber (6 pcs. 0 · 27 denier nylon 6, and 1 pcs. 0.4 denier. The paper size is applicable to China National Standard (CNS) A4 specification (210X297mm) ------- ----- Γ installed! (Please read the precautions on the back before filling out this page) Order A7 _ _B7_ Printed by the Employees Consumer Cooperative of the Central Bureau of Economic Cooperation of the Ministry of Economic Affairs V. Description of invention (44) Nylon 6 1 2 ratio繊 维), and 2 0% L = 1 Omm of 2 denier (monofilament diameter D = 14. L // m; L / D = 710) heat-fused fiber UNIMELT UL — 61 (trade name) ( Made by Japan UN I CHAKA company, core part: nylon 6, sheath part: total% · polymerized nylon) dispersed in water, obtained from slurry with adjusted concentration of 1% in the same way as in Example 1 7 5 g / rri mixed layer. Afterwards, the staggered treatment was carried out in the same manner as in Example 1, and the needle spreader dryer with a temperature setting of 160 ° was used to dissolve the UN I ME L Τ UL — 6 1 (trade name) in the layer: Furthermore, the interleaving process was carried out in the same way as in Example 1: adding a surfactant and rolling to obtain a nonwoven fabric with a unit amount of 72 g / rri and a thickness of 0.18 mm / [Comparative Example 7] except that the fiber length L = 5 mm Other than that, the same as that used in Example 5 is 80% 2.0 denier (monofilament diameter 14.lem) nylon 6 / nylon 6 1 2 composite staple fiber, UNIMELT UL — 61 (trade name is available) The mixed layer formed was subjected to fluid flow treatment in the same manner as in Example 5, and then dried at 180 ° C with a pin spreader dryer.> When the column flow treatment caused fiber flow and Poor build-up texture &gt; will be a staggered layer with perforations. On the surface of the staggered layer, make it flow down by a similar method as described in Example 1 of Japanese Patent Laid-Open No. 7-2 7 2 7 0 9 The 0.01% water diffusion of the heat-fusible synthetic slurry SWP (UL-410) formed by the polyethylene used in Comparative Example 4 For slurry, about 5g / paper size is in accordance with the Chinese National Standard (CNS) A4 specification (219X 297mm) ^-(please read the precautions on the back before filling in the text). Order B7 5. Description of the invention (45) πί's synthetic slurry makes it pile up on the surface of the stack v and dry at 1 30 ° C. The resulting stack does improve the perforation, but it does not improve the texture caused by the unit amount of streaks in the interleaved layer. V This laminate was subjected to the final rolling process in the same manner as in Example 5, and the surface active agent was added to obtain a unit amount of 7 2 2/1 ^ and a thickness of 0.18 mm. The second table shows the above example. 4 ~ 5, and the nonwoven fabrics obtained in Comparative Examples 5 ~ 7, the performance test results of the battery separator β. It can be understood from the second table: Example 4 is a nonwoven fabric formed of short fibers with thicker fiber diameters · However, compared with Comparative Example 5 with sufficient interlace density and uniformity, the tensile strength and conductive impedance are superior / Compared with Comparative Example 6, the electrical conductivity is superior, and it can be used as a general-purpose barrier « Sheet., The surface layer of the nonwoven fabric of Example 5 In order to form a close interlaced structure of ultrafine fibers made by the fiber ratio by columnar flow treatment; but the inner layer part retains the structure of the composite fiber formed by the undivided 2 denier .. Improve the nonwoven layer Texture, conductive impedance, but it is also printed as «〆 Printed by the Employee Consumer Cooperative of the Central Bureau of Economic Affairs of the Ministry of Economic Affairs (please read the precautions on the back before filling out this page). 6 / Nylon 6 1 2 composite short fiber L / D = 3 5 4 is small; therefore, a very uniform mixed layer is required, but the fiber is easy to move due to jet water flow treatment, causing a fiber flow and poor texture in the layer. It was found that most of the perforated / laminated synthetic slurries without perforations, the surface of the synthetic slurries have marks, and the improvement of the texture is not good. In addition, there are significant hydrophilic imbalances / electrolyte liquid holding performance becomes low, Tingdian Impedance bar rises / but is practically unsustainable as a separator / This paper scale applies the Chinese National Standard (CNS) A4 specification (2 丨 0X297mm) -48-308742 A7 B7 V. Invention description (㈧) & l t; Table 2> / Printed by the Employees ’Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs * Example 4 Comparative Example 5 Comparative Example 6 Example 5 Comparative Example 7 Raw silk composition (L / D =) 2.0dN66 (1060) 2.0dN66 (1060) 2.0dN66 (3600) 2.0dN66 / N612 (1060) 2.0dN66 / N612 (354) Lamination formation wet method wet method dry method wet method wet method wet method single position (g / crrf) 85 86 84 72 72 Thickness (ram) 0.20 0.21 0.20 0.18 0.18 Texture index 90 85 121 95 154 Tensile strength (kg / cm) 3.9 2.3 4.2 3.7 1.7 Gas permeability (CC / cmVsec) 63 60 62 21 15 Liquid retention rate U) 365 350 360 305 300 Liquid holdup rate (¾) 80 62 72 91 70 Liquid aspiration rate (ram) 111 87 115 105 74 Compression stress (kg / cni) 4.21 2.11 4.24 2.85 1.76 Conductive impedance (Ω) 0.73 2.25 1.45 0.85 3.25 Intersection point Distance (# m) 240 &gt; 400 300 135 308 This paper scale is applicable to China National Standard (CNS) A4 (210X 297mm) (Please read the precautions on the back before filling this page) A7 B7 V. Invention Description (47) [Example 6] 80% fiber length L = 6mm of 0.25 denier (monofilament diameter D = 5. 4em , L / D = ll〇〇) nylon 6 short fiber, 20% L = l 〇mm of 2 denier (monofilament diameter D = 14. lem'L / D = 709) heat fusion fiber UNIMELT UL — 61 (trade name) (manufactured by Japan Unichaka Co., Ltd .: core: nylon 6; sheath: copolymerized nylon, dispersed in water and adjusted to a slurry concentration of 1%. From this slurry, a mixed paper layer of 68 g / rri was obtained with a tilted long wire paper machine. The obtained mixed layer was mounted on a gold mesh of 80 mesh and transported at a speed of 12 m / min. Printed with a nozzle diameter of 0. 1 5mm and sprayed with a nozzle diameter of 0.15mm. Printed by the Employee Consumer Cooperative of the Central Standards Bureau of the Ministry of Economy (please read the precautions on the back before filling out this page). Insert the metal mesh of 40 mesh at a position separated by 25mm from the gold-mesh mesh to make the water with a pressure of 25 kg / c πί intersect with the intermittent cylindrical water flow to the mixed layer /, and make it interlace short fibers r heat melts the fiber; Furthermore, after performing the same treatment 6 times, the reversed layered surface and back were subjected to 7 phase i treatments. Then turn it to the nozzle head with 420r.p.m; the gold lure inserted into the 60 mesh is treated with the water pressure of 2 O kg / c rrf twice to complete the staggered layer after the treatment of the diffused water / the temperature is set to 1 6 0 ° C The needle-type spreading dryer dries the obtained interlaced layer, and at the same time smoothly melts the sheath part (melting point 1 4 0 ° C) of UN IMELT UL-6 1 (trade name) between the interlaced layers to obtain a nonwoven fabric. f; this non-woven fabric can be used as a battery separator as it is / but is impregnated with non-polar surfactants for the purpose of improving the initial affinity with the electrolyte. The paper scale is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -50-A7 B7 printed by the Employees ’Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economy V. Description of the invention (48) EMALUKAN910C (made by Kao Corporation) 0.05% aqueous solution, after dehumidification, the adhesion rate becomes 40% of the nonwoven fabric, Dry with a pin spreader dryer with a temperature setting of 160 ° C. Next, the hydrophilic processing layer is guided to a pair of rollers heated to 100 ° C, and subjected to rolling processing with a linear pressure of 30 kg / cm to obtain a unit volume of 6 5 g / πί, with a thickness of 0.15 mm The separator of the battery is made of non-woven fabric. , [Example 7] 40% fiber length L = 6mm of 0.25 Denier (monofilament diameter D = 5.4em) nylon 6 short fiber, 40% weave dimension length L = 7.5mm of 0 . 5 denier (monofilament diameter D = 7.8 mm) nylon 6 6 short fiber, 20% thermal fusion UN IMELT UL — 6 1 (trade name), using the same method as Example 6 Must have the mixed layer formed above. Furthermore, interleaving treatment, addition of a surfactant, and rolling processing were carried out in the same manner as in Example 6 to obtain a nonwoven fabric for battery separators with a unit amount of 65 g / π, and a thickness of 0.15 mm. [Example 8] Valley island ratio fiber (manufactured by Nippon 3-gut & Co., Ltd.) with fiber length L = 3 to 3.8 denier (monofilament diameter d = 21 to m), Tanibu: copolymerized ester, , Island) nylon 66. 36 divided) placed in 4% aqueous sodium oxide solution to dissolve and draw out the valley, and the valley was obtained. 05 Denier nylon 66/80% valley fiber length 3mm 0 05 den Neil (monofilament diameter D = 2_ 3em, L / D = 1300) nylon 66 staple fiber paper size is applicable to the national standard (CNS) A4 specifications (210X297 mm) (please read the precautions on the back first (Fill in this page) ‘Applied. 、 Ya, ς 51 Employee consumption cooperation of the Central Central Bureau of Economic Affairs of the Ministry of Economic Affairs Duyin A7 B7 V. Description of invention (49) Dimension, 20% hot melt dimension UNIMELT UL = 61 (trade name), In the same way as in Example 6, a mixed layer of the above shape is obtained. Then, interleaving treatment / addition of a surfactant and rolling processing are performed in the same way as in Example 6 to obtain a unit amount of 65 g / rri. 0.15 mm thick nonwoven fabric for battery separator ϊ [Comparative Example 8] Shaped in nylon 6 made with an average fiber diameter of 2, single position 65 g / iri, thickness 0.3 mm Meltblown non-woven fabric 6 ,, same purposes of the embodiment of interleaving ',, imposed surfactant must have a rolling process and the unit amount of 6 5 g / ma, _ 0 nonwoven thickness of 1 5mm. Comparing Examples 6, 7, and 8, the mechanical strength of the ventilation is quite low, and the liquid-forming performance is also deteriorated: [Comparative Example 9] The average fiber diameter is 2 and the unit volume is 36 g / ni. The melt-blown non-woven fabric formed by the nylon 6 manufactured by 0.3 ~ makes it stack 80% of the fiber length L = 7.5 of 0.5 denier (monofilament diameter D = 7.8 # m) of nylon 66 Short fiber, 20% hot-melt fiber UN IMELT UL — 6 1, a mixed layer with a unit amount of 30 g / πί / interlaced treatment as in Example 1, addition of surfactant, / rolling It is processed to have a non-woven fabric with a single position of 6 5 g / πί and a thickness of 0.15 mm. ; The third means that the above examples 6, 78 and comparative example 8; 9 of the paper standards apply the Chinese National Standard (CNS) A4 specifications (210X297 mm); ----------- ^- (Please read the precautions on the back before filling in this page) Order-52-A7 B7 5. Description of the invention (5〇) The performance test results of the obtained nonwoven fabric as a battery separator Non-woven fabric, as compared with Example 6; 7, 8, 8. The mechanical strength is low, the ventilation rate is low, the liquid holding performance is deteriorated, and the build-up texture is formed as a result of considerable deterioration V. In addition, in Table 3 Understand

P The battery separator of the invention is not woven; the laminated texture is superior, and the tensile strength, gas permeability, liquid retention or liquid holding performance are high, and the liquid absorption performance is good. . Secondly, use of 0.5 denier less than thermoplastic denier from Figure 3 is effective in suppressing the increase in internal impedance, and it is found that the charge and discharge cycle performance of the sealed secondary battery is also more improved. ... (Please read the precautions on the back before filling out this page) The paper standard printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs applies the Chinese National Standard (CNS) A4 specification (2 丨 OX297mm) -53-308742 V. Description of the invention (Γ /) / &lt; Table 3 &gt; The reference texture data of the plywood layer: 5 2 (PPC paper) Printed by the Ministry of Economic Affairs, Central Bureau of Economic Cooperation and Development, Beigong Consumer Cooperatives Example 6 Example 7 Example 8 Comparative Example 8 Comparative Example 9 Raw silk composition (L / D =) 0.25N66 (1100) 0.25dN66 0.5dN66 0.05dN66 (1300) 2 u mN6 2 μ ιηΝ6 0.5dN66 The layer formation of the wet layer wet method wet method wet method melt blown method is the same as the left drawer Unit J8: U / cirf) 65 65 65 65 66 Thickness (M) 0.15 0.15 0.15 0.15 0.15 Tensile strength (kg / cm) 3.1 3.4 3.2 0.9 1.8 Gas permeability (CC / cmVsec) 11 12 10 6 6 Liquid sauce retention rate (¾) 300 302 310 310 301 Liquid holding rate (%) 95 95 96 92 92 Liquid aspiration rate (mm) 120 110 120 100 1 100 Compression stress (kg / cm *) 3.4 3.45 3.50 1.43 2.10 Conductive impedance (Ω ) 0.65 0.60 0.70 1.12 1.20 Distance between intersecting points (pm) 90 95 45 160 160 Indigo texture Weaving index 55 56 49 43 103 The size of this paper adopts the Chinese National Standard (CNS &gt; A4 specification (210x 297 mm) 1 —————, I ^ —.----- I outfit-- (please read first Note on the back and then fill out this page) Stranding Γ A7 _____B7_ V. Description of the invention (52) [Example 9] Dry the interlace obtained in Example 9 using a pin spreader dryer set at 180 ° C Layer, while simultaneously dissolving the sheath part (melting point 140 ° C) of the UNI Μ ELT UL — 6 1 (trade name) between the interleaved layers. Then, only impregnated the non-polar surfactant I MA L UKAN 120 (Manufactured by Kao Corporation of Japan), respectively, after the aqueous solution of the concentration of 0.05%, 0.1%, 0.25%, 0.5%, 1%, 2% and the water of the active agent (the NO. 1 ~ 7), dehumidification to make the adhesion rate to 200% of the non-woven fabric / dry with a pin spreader dryer set at a temperature of 160 ° C: further, lead to heating to 100 ° C A pair of gold rollers &gt; 30 kg / cnf at a linear pressure, and subjected to rolling processing in the same manner as in Example 1 to obtain a nonwoven fabric for battery separators with a unit amount of 73 g / m ′ and a thickness of 0.18 mm. Table 4 shows the physical properties and performance of the obtained nonwoven fabric as a battery separator. If the non-polar active agent is not attached at all, it lacks hydrophilicity. As more active agent attachment agents are formed, the hydrophilicity becomes higher, and it is considered that there is a tendency to lower the liquid holding rate. (Please read the precautions on the back and then fill out this page)-Binding and Ordering The paper printed by the Ministry of Economic Affairs, Central Bureau of Standardization, Beigong Consumer Cooperative is printed in accordance with the Chinese National Standard (CNS) A4 (210 X 297 mm) A7 A7 Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs ____B7 V. Description of Invention (r)) &lt; Table 4 &gt; Example 9 No. 7 No.l No. 2 No. 3 No. 4 No. 5 No .6 Unit weight (g / rrf) 72 72 72 72 72 72 72 Thickness (Μ) 0.18 0.18 0.18 0.18 0.18 0.18 0.18 Active agent placement (reset%) 0 0.1 0.2 0.5 1.0 2.0 4.0 Tensile strength (kg / cin ) 3.8 3.7 3.6 3.6 3.5 3.1 2.3 Liquid retention rate (¾) Impregnated Gan 340 336 335 332,336 333 Liquid absorption rate (ram) 5 120 123 130 138 148 178 Liquid holding rate (%) Impregnated Gan 92 92 90 87 78 69 (Please read the precautions on the back before filling out this page).

、 -IT This paper scale is applicable to China National Standard (CNS) A4 specification (210X 297mm)-0 1

T A7 B7 $ &quot; Description of the invention (54) [Example 1 〇] Use the pin spreader dryer set at 180 ° C to dry the interlaced layers obtained in Example 7 while dissolving the interlayers smoothly UN I ME L 丁 UL — 6 1 (trade name) sheath part (melting point 140 ° C) / subsequently, immersed in 0.2% aqueous solution containing non-polar surfactant SI NDUL (manufactured by Takamatsu Oil Co., Ltd.) After dehumidification, the adhesion rate is 200% of the non-woven fabric, and it is dried with a needle spreader dryer with a humidity setting of 160 ° C. Then: a pair of heated gold rollers are applied After rolling, the calendered linear pressure is 0, 5, 10, 20, 30, 40, 50 kg / crri and the temperature is changed, and the thickness is different. Sample No. 1 ~ 7 Nonwoven fabric for battery separator ,. Table 5 shows the physical properties r performance. The density of non-woven fabrics is lower and the liquid holding capacity is higher, but it is considered that the liquid holding capacity tends to decrease. , (Please read the precautions on the back before filling in this page) Packing. The line is printed by the central government of the Ministry of Labor and Consumers Cooperatives. The paper size is applicable to the National Standards (CNS) A4 specification (21Q X W7 company) PCT) 308742 A7

B Printed by the Employee Consumer Cooperative of the Central Standard Falcon Bureau of the Ministry of Economic Affairs 5. Description of the invention (, / ·) &lt; Table 5 &gt; Zi Shi Example 1 0

No.7 No.l No. 2 No.3 No. 4 No.5 No.6 Unit volume (g / rrf) 72 72 72 72 72 72 72 Thickness (mm) 0.30 0.28 0.24 0.20 0.18 0.16 0.14 Density (g / cm3) 0.24 0.26 0.30 0.36 0.40 0.45 0.51 Roller press (kg / crrf) frTf m 5 10 20 30 40 50 Ventilation rate CC / cmVS 48 42 36 31 24 20 17 Retention rate (¾) 480 420 385 365 330 1.- 280 220 Aspiration speed (nun) 86 90 90 92 90 89 87 Liquid holding rate (¾) 74 85 88 90 90 88 66 (Please read the precautions on the back before filling this page) This paper size is applicable to China Standard (CNS) A4 specification (210X 297 mm) 1 — A7 Printed by the Beigong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs ______B7_ V. Description of the invention (56) [Example 1 1] Set to 1 8 0 ° C The needle-type spreading dryer dries the interleaved layer obtained in Example 1, and at the same time smoothly melts the sheath portion (melting point 1 4 0 ° C) of UNIMELT UL-61 (trade name) between the interleaved layers and then f, dipped in Contains non-polar surfactant Buer kp (made by Takamatsu Oil and Fat Co., Ltd.) 0.2% aqueous solution, after dehumidification, the adhesion rate is 200% of non-woven fabric, the temperature Set i is of 1 6 0 ° C dryer drying spreading pin. , Furthermore, after a pair of metal rollers heated to 100 ° C were subjected to rolling processing with a linear pressure of I 3 5 kg / cm, both sides were fluffed with sandpaper with 500 mesh, Therefore, a unit quantity of 7 2 g / iri, a thickness of 0.18 mm, and a fluffing stress of 2.5 g / crri for the battery separator non-woven fabric was obtained. , [Example 1 2] X.- In addition to using 1800 mesh sandpaper to fuzz both sides, there is the same implementation as in the example, and a unit amount of 62 g / nf, thickness 0.18mm. 、 Lifting stress 3.5g / cnf battery separator with non-woven fabric. , [Example 1 3 ί With a roller brush implanted with nylon fibers to raise both sides, in addition, after the same implementation as in Example 6, the unit amount is 7 2 g / rri, and the thickness is 0.181111111. . 8g / ciif battery separator (please read the precautions on the back before filling in this file) Γ loaded · -ir shredded paper size is applicable to China National Standard (CMS) A4 specification (210X297mm) -59-308742 A7 ________B7 V. Description of invention (57) Non-woven fabric. (Please read the precautions on the back before filling in this page) [Example 1 4] A roller brush with pig hair is used to fluff both sides, and after the same implementation as in Example 6, the unit amount is 7 2 g / nf., thickness 0.18 mm, fluffing stress 1. 3g / crri non-woven fabric for battery separator. Table 6 shows the performance of the nonwoven fabric for battery separators obtained in Example 1 and Examples 11-14. It can also be understood from Table 6 that the battery separators of Examples 11 to 14 having fluffing on the surface: the electrolyte holding capacity is further improved as in Example 1, and the gas permeability is also good, and the internal impedance increases It is also lower and has more ideal performance as a high-performance battery separator. Actually, a sealed nickel battery containing a non-woven battery separator obtained therefrom • a cadmium secondary battery was produced, and the overcharge characteristics were evaluated to form the nonwoven fabric of Examples 1 1 to 14. The septum further improves the safety valve leakage rate. "This situation is considered, the result of the oxygen generated from the positive electrode passing through the non-woven separator of the battery, and the consumption reaction at the negative electrode is easily carried out." The standard of private paper printed by the Staff Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs is applicable to the Chinese National Standard (CNS) A4 (210X297 mm) -60-A7 ____B7 V. Description of the Invention (Ling) &lt; Table 6 &gt; Central Ministry of Economic Affairs Printed by the Bureau of Standards and Staff Consumer Cooperatives Example 1 Example 11 Example 12 Example 13 Example 14 Example 2 Comparative Example 1 Unit weight (g / rrf) 72 72 72 72 72 72 74 Thickness (ram) 0.18 0.18 0.18 0.18 0.18 0.18 0.18 Rising stress (kg / cirf) 0.6 2.5 3.5 1.8 1.3 0.7 0.4 Tensile strength (kg / cm) 3.3 3.1 3.0 3.2 3.2 3.5 2.0 Flooding rate (%) 90 97 98 95 92 --- 87 62 Internal impedance rise (Ω) 0.16 0.10 0.10 0.12 0.13 0.17 0.46 overcharged characteristics (¾) 2 0 0 0 1 0 33 (please read the precautions on the back before filling in this page) r 装 _ 定 1 丨 The size of the paper is applicable to China Standard (CNS) A4 specification (210X297mm) One piece? I a 308742 A7 B7 5. Description of the invention (59) [Possibility of industrial use] According to the invention f, gas permeability, liquid retention, liquid

# »I — Nonwoven fabric for battery separators with superior body fluid absorption speed, etc. The nonwoven fabric for battery separators of the present invention has high unit volume uniformity and tensile strength and low &gt; * Electrical impedance, and can provide past A superior battery separator that's nothing].

The non-woven fabric of the electrical separator of the present invention: due to the mechanical strength of the phase, the battery is not damaged when it is installed; ^ The unit quantity is uniform and tightly interleaved; therefore, it has excellent resistance to migration of active materials Short circuit, and furthermore, gas permeability, liquid retention rate, &gt; liquid absorption rate performance is good, and it is particularly superior to electrolyte liquid holding capacity, and gas consumption reactivity, so it can be appropriate The use of sealed secondary batteries> can also fully correspond to the recent increase in capacity of the secondary battery; · In fact, the secondary battery contained in the battery nonwoven separator of the present invention has an excellent Charging characteristics 丨 and has a long charge and discharge cycle life characteristics / the non-woven fabric for battery separator of the present invention has great industrial value P --- --------: --- 一 丨 ^ II (please first Read the precautions on the back and then fill out this page) The size of the paper printed by the Employees ’Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm)

Claims (1)

I ^ 742 A8 B8 C8 D8 7 ° Chinese patent application No. 8 4 1 1 4 Ο 8 0 Patent application Chinese application Patent scope amendment The Republic of China 1985 1 February Amendment Ministry of Economic Affairs Central Bureau of Industry and Commerce Cooperative Consumer Cooperative At least short woven dimension of printing phase ^ m &gt; 2 fabrics between fibers, whose (L m) is 0 3 Wet type is 1 ~ No more than 4 pieces Wet 5 pieces Wet c rrf 〇- A battery separator Wet non-woven fabric is used, which is characterized by: The diameter of the three-dimensional interlaced three-dimensional interlaced single-woven dimension is less than 2 Ο ρπί 1 type of thermoplastic short fiber 2 0 ~ 9 5 wt% melted with heat '* The aforementioned short fiber The average distance between the intersecting points is less than 300 and the most part of the aforementioned thermally fusible short fiber is thermally melted and then a single nonwoven structure layer is fixed. .For example, the length of the aforementioned thermoplastic short fibers and thermally fusible short fibers in the wet nonwoven of the battery separator for the first patent application is the ratio of the fiber length m to the diameter of the single fiber (Dmm) (L / D 5X103 ～ 2. 0X103 0 », such as the battery separator of item 1 or 2 of the patent application scope, where the aforementioned thermoplastic short fibers are mixed with short fibers with a single fiber diameter of 8 &quot; m, , At least one of the short fibers with a single fiber diameter larger than the single fiber and 2 0 and more than 8 &quot; m.... Such as a non-woven fabric of the battery of any of the items in the first or 2 of the patent application, wherein the texture The tissue index is lower than 100 °, °. For example, the partitioned non-woven fabric of the battery of any one of the items 1 or 2 of the patent application, in which the appearance density is higher than 0.26 g / plus Yuzhizhitangyuan The original paper wave of any item of item 1 or 2 is used from 14 to t Daijia Standard (CNS) A4 specification (21〇Χ297 ^ ίΤ, ---- U ------ ^ · installation ------ Order ------ 7 ·.-(Please read the precautions on the back before filling in this page) I308742 B8 C8 D8 VI. Wet non-woven fabric for patent application for film, where the interface Attachment of sex agent is less than 2%. 7. Wet non-woven fabric for battery separators as in any of items 1 or 2 of the patent application, where the compressive stress is higher than 3.0 kg / cm 2 8 .For example, the wet-type non-woven fabric for battery separators in any of the items 1 or 2 of the patent application, in which the conductive impedance is less than 1.0 Ω 9 .- A method of manufacturing a wet-type non-woven fabric for battery separators: The special characteristics are: formed from more than one type of thermoplastic short fibers 20 to 95 wt% and thermally fusible short fibers having a melting point lower than the melting point of the aforementioned short fibers by 20 ° C, in The mixed copy made by the copying method makes it collide with the fluid flow of the song, so that the three-dimensional three-dimensional interlace of the mixed copy layer, and then melt part or all of the hot melted fiber by heat treatment., 1 0 .— A sealed secondary battery, (characterized by: the use of a wet non-woven fabric separator as the separator of the battery described in items 1, 2, 3, 4, 5, 6, 7, or 8 of the patent application Use / to configure it and assemble it., ——- Γ ------ install ------ order -------- ^ (please read the note Qin on the back first Item and then fill out this page) Printed by the Employee Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs This paper standard is applicable to the Chinese National Standard (CNS) A4 (210X297mm)