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WO1996021759A1 - Fibres associees et structure de fibres les contenant - Google Patents

Fibres associees et structure de fibres les contenant Download PDF

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Publication number
WO1996021759A1
WO1996021759A1 PCT/JP1995/002638 JP9502638W WO9621759A1 WO 1996021759 A1 WO1996021759 A1 WO 1996021759A1 JP 9502638 W JP9502638 W JP 9502638W WO 9621759 A1 WO9621759 A1 WO 9621759A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber
composite
component
weight
conjugate
Prior art date
Application number
PCT/JP1995/002638
Other languages
English (en)
Japanese (ja)
Inventor
Yoshikatsu Mizukami
Takato Nomi
Toshihide Tomikawa
Tsutomu Teshima
Katsumi Agari
Hiroshi Onoue
Hiroko Fukumoto
Original Assignee
Kanebo, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP7053522A external-priority patent/JPH08226018A/ja
Priority claimed from JP7059936A external-priority patent/JPH08269857A/ja
Priority claimed from JP7059937A external-priority patent/JPH08246240A/ja
Application filed by Kanebo, Ltd. filed Critical Kanebo, Ltd.
Publication of WO1996021759A1 publication Critical patent/WO1996021759A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4391—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece characterised by the shape of the fibres
    • D04H1/43918—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece characterised by the shape of the fibres nonlinear fibres, e.g. crimped or coiled fibres
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/40—Yarns in which fibres are united by adhesives; Impregnated yarns or threads
    • D02G3/402—Yarns in which fibres are united by adhesives; Impregnated yarns or threads the adhesive being one component of the yarn, i.e. thermoplastic yarn
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/018—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the shape
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
    • D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
    • D21H15/10—Composite fibres

Definitions

  • the present invention relates to a conjugate fiber containing propylene, which is mainly composed of a syndiotactic pen needle component, as a component of the fiber, particularly a highly crimpable or heat-sealable fiber, and a fiber structure containing such a fiber.
  • the present invention relates to yarn, fabric, paper, and molded articles thereof.
  • thermoplastic synthetic fiber at least two kinds of thermoplastic polymer components are eccentrically or concentrically arranged in a cross section of a single fiber and are uniformly bonded along a fiber axis, that is, a conjugate fiber is a composite fiber.
  • a conjugate fiber is a highly crimped fiber utilizing self-crimping property due to a difference in physical properties such as heat shrinkage and swelling between components, or one component is a load-bearing skeleton component and the other component is Its use as heat-fusible fibers, ie, binder fibers, etc., having a heat-fusible component, is wide-ranging.
  • a crimped fiber of polypropylene for example, a composite fiber of crystalline polypropylene and a copolymer of polypropylene has been proposed in JP-A-3-167314.
  • the composite include a side-by-side type and an eccentric core-sheath type.
  • the copolymer of polypropylene is a copolymer of propylene, ethylene, butene-11, etc.
  • the melting point is stated to be 125 ° C or higher, no detailed production method is described.
  • the number of crimps is 14 Z inches, which is not a high crimped conjugate fiber having a number of crimps of 30 inches or more. Also, there is no description of a method for giving a high number of crimps.
  • Japanese Unexamined Patent Publication No. Hei 5-7818916 proposes a composite fiber of polypropylene and a random copolymer of 92 to 97% by weight of propylene and 8 to 3% by weight of ethylene.
  • This composite fiber has a number of crimps of 60 or more inches and is a high crimped composite fiber.
  • this copolymer has limited weight average molecular weight and number average molecular weight values. It is described that if this value is too large, that is, if the width of the molecular weight distribution is too large, cooling during spinning becomes difficult. This is because the random copolymer has poor crystallinity and easily sticks. Therefore, it is preferable that all polymers for general fibers are crystalline polymers.
  • JP-A-3-82814 a new polypropylene fiber having a syndiotactic pentad fraction of 0.7 or more and a thickness of 100 to 0.1 denier is used. Fibers have been proposed. Although the characteristic of this fiber is high tensile strength, in the example, it is 480 g at 370 denier, which is much smaller than the strength of 3 g Z denier of general polyethylene terephthalate fiber. In addition, this proposal does not describe a conjugate fiber, nor does it describe a use as a high crimped fiber or a heat-fusible fiber.
  • Japanese Patent Application Laid-Open No. 11-11616 discloses that 99 to 50% by weight of a copolymer of ethylene and 1 to 15% by weight of octene-1 and 1 to 50% by weight of crystalline polypropylene.
  • a composite fiber comprising a core component comprising a sheath component obtained by polyblending polyethylene and polyethylene terephthalate has been proposed.
  • Composite fibers that use ordinary low-density polyethylene (LDPE) or high-density polyethylene (HDPE) as a sheath component have a hardened bond when heat-sealed, and the texture of nonwoven fabrics, woven and knitted fabrics, etc., becomes harder.
  • LDPE low-density polyethylene
  • HDPE high-density polyethylene
  • Japanese Patent Application Laid-Open No. 5-166354 discloses polybutylene terephthalate and polybutylene terephthalate.
  • Non-woven fabrics containing a composite fiber using an elastomer made of a block copolymer of tetramethylene glycol as a sheath component and polyethylene terephthalate as a core component have been proposed.
  • the polymer of the sheath component is expensive, and this proposal has been proposed. Also suffered financial disadvantages.
  • the present inventors have focused on syndiotactic polypropylene as a polymer that is inexpensive, flexible, and has good spinnability, and completed the present invention by conducting research on conjugate fibers containing it as a component and its application. Led to.
  • An object of the present invention is to provide a high-crimped fiber containing polypropylene, which is easy to be spun and inexpensive, as a component, and a fiber structure such as a nonwoven fabric or a knitted fabric having a soft texture.
  • Another object of the present invention is that the heat-fused fiber is heat-fused, the bonded portion is not hardened, the texture of the nonwoven fabric, knitted fabric, etc., made of the heat-sealed fiber is soft, and it is difficult to pressurize even when repeatedly applied compressive load. It is an object of the present invention to provide a fibrous structure such as a nonwoven fabric, a knitted fabric, and a molded product.
  • Still another object of the present invention is to provide inexpensive paper having excellent wet strength and soft texture.
  • one of the composite components is made of polypropylene containing at least 55% by weight of a syndiotactic pentad component (hereinafter abbreviated as “SPP”).
  • SPP syndiotactic pentad component
  • the first embodiment of the conjugate fiber of the present invention specifically includes a first conjugate component composed of SPP and a second conjugate component composed of a textile forming polymer having at least 2 (TC higher touch points).
  • a first conjugate component composed of SPP and a second conjugate component composed of a textile forming polymer having at least 2 (TC higher touch points).
  • TC higher touch points are eccentrically arranged in a cross section of a single fiber, and are conjugate fibers having high crimpability which are uniformly bonded along a fiber axis.
  • the second composite component is made of polypropylene (hereinafter abbreviated as “IPP”) containing at least 55% by weight of an isotactic pentad component.
  • IPP polypropylene
  • the bicomponent fiber of the present invention has a high crimp developing property, and the number of self-expressed crimps due to boiling water (boiling water crimp number) is at least 40, preferably at least 55, more preferably at least 2.5 per 2.5 cm. At least 60.
  • the first composite component and the second composite component are a single fiber.
  • the SPP core ZIPP sheath-type composite fiber is particularly preferable in terms of the operations of spinning, drawing, knitting, weaving, and the like, because the surface properties of the fiber become the properties of the sheath IPP.
  • the composite ratio of the two composite components is preferably SPP: IPP in the range of 1: 3 to 3: 1, and as the ratio approaches 1: 1, the number of crimps increases, which is more preferable. More preferably, the joining line between the two composite components in the fiber cross section is close to a straight line.
  • the polypropylene-based composite fiber in this embodiment has a large number of self-expressed crimps, and a nonwoven fabric, a spun yarn, and a knitted fabric using the same exhibit excellent bulky properties.
  • the second embodiment of the present invention is basically a SPP sheath / IPP core type composite fiber, which exhibits thermal adhesiveness by high-temperature treatment due to the heat fusibility of SPP of the first composite component.
  • the first composite component covers at least 60% of the circumference of the cross section of the fiber;
  • a composite form in which the components are wrapped inseparably that is, a composite form in which both components are structurally inseparable
  • a heat-fusible conjugate fiber that is, a binder fiber
  • Such a composite fiber is basically a core-sheath type, but when the coating of the SPP component is stretched and does not completely cover the periphery of the fiber, it becomes a type similar to a side-by-side type.
  • the first composite component covers at least 60% of the circumference of the fiber cross section, and the two components are structurally inseparable from each other, separation between components can be prevented.
  • the first composite component consisting of SPP with a low melting point melts and shrinks into large lumps, which reduces the number of bonding points and significantly reduces the heat fusion effect .
  • the cross-sectional shape of the composite fiber of the present invention is not limited to a circle, but may be arbitrarily selected depending on the purpose, such as an ellipse, a flat shape, a trilobal, a multilobal, and a hollow.
  • the melting point of general polypropylene is around 160 ° C.
  • This polypropylene is an IPP in which the pentad methyl groups are located on the same side.
  • This polypropylene is High crystallinity and poor flexibility.
  • 5? Has a melting point of around 140 and is crystalline, but has a low crystallization rate and high flexibility.
  • SPP also exhibits rubber-like properties. Since SPP and IPP have mutual affinity, they are particularly suitable to be used as the composite fiber composite component of the present invention, since there is no separation between components during fiber use and both are inexpensive polypropylene.
  • the thermoplastic polymer which is composited with SPP and plays a role as a load-bearing component is, for example, a core-sheath type or both components in addition to the IPP described above.
  • a commonly used fiber-forming polymer such as polyethylene terephthalate, polyethylene terephthalate, nylon 6, nylon 66, and nylon 12 can be used. If the difference in melting point between the two components is less than 20 ° C, strict operation of the temperature control is required when using the conjugate fiber of the second embodiment as the heat-fused fiber, which poses a practical problem. .
  • the specific gravity is 5 to 5%. Is about 0.9, so the apparent specific gravity of the composite fiber is larger than 1. Therefore, this composite fiber is suitably used as a binder fiber of paper. In other words, in the case of producing paper, if the specific gravity is greater than 1 in the step of dispersing the raw fiber in water, it is easy to disperse the fiber, which is advantageous for performing beating or the like.
  • polyester having a large specific gravity is particularly preferable in view of cost.
  • transition metal catalysts such as isopropyl (cyclopentadenyl-1-fluorenyl) hafnium dichloride and isopropyl (cyclopentadenyl-yl) Fluorenyl) zirconium dichloride.
  • the aluminoxane has a general formula of R— (A 10) facedA 1 R or cyclic (R—A 10)», where R represents a hydrocarbon group having 1 to 3 carbon atoms.
  • R is a methyl group and n is 5 to 10 are often used.
  • the polymerization method of SPP using this catalyst is not particularly limited, and a solution polymerization method, a bulk polymerization method, a gas phase polymerization method, or the like is used. Usually, pressure polymerization is performed.
  • the syndiotactic pentad component ratio of the SPP used in the present invention can be measured by 13 C-NMR or the like. It can also be easily estimated by IR and DSC.
  • the SPP used in the present invention contains a syndiotactic pentad component in a ratio of at least 55-fold S%. If the amount is less than 55% by weight, the crimp ratio expressed as the highly crimpable fiber of the first embodiment is too low.
  • the binder fiber of the second embodiment lacks the flexibility of the bonding point. Preferably it is at least 60% by weight. From the viewpoint of spinnability, the weight is preferably 55 to 70 weight.
  • This SPP is a crystalline polymer.
  • the ratio of the syndiotactic pentad component of SPP can also be changed depending on the polymerization conditions. It can also be changed by polyblend with IPP. Preferably, it is a polyblend that does not impair the crystallinity.
  • the molecular weight of SPP used in the present invention may be any molecular weight suitable for melt spinning.
  • the general molecule S can be adjusted by depolymerization using a peroxide used for adjustment.
  • the viscosity of both components at the spinning temperature is closer to the melted fang yarn of the conjugate fiber because spinning is easier.
  • the melt viscosity of general melt spinning is from 0.1 to 30, preferably from 1 to 15. This melt viscosity is based on the method of JISK-670, which shows the outflow weight in grams for 10 minutes at an orifice diameter of 2 mm, a load of 2.16 kg, and a temperature of 190 ° C. It is the value measured by JISK-670, which shows the outflow weight in grams for 10 minutes at an orifice diameter of 2 mm, a load of 2.16 kg, and a temperature of 190 ° C. It is the value measured by
  • I I used in the present invention may be polymerized with a conventionally produced and marketed Ziegler-Nautswein catalyst or force Minsky catalyst.
  • the melt viscosity is preferably the same as that of S ⁇ in terms of spinnability.
  • I ⁇ can also be produced by selecting the polymerization conditions by the above-mentioned method for producing S ⁇ .
  • SPP / Can also be produced by polypreparation with polypropylene.
  • the pentad component ratio of IPP can be measured in the same way as SPP. If the solid content of the IPP is less than 55% by weight, the crystallinity or the crystallization rate is low, and the spinning tends to occur during spinning. Preferably it is at least 70% by weight, more preferably at least 80% by weight.
  • a small amount of other vinyl-based monomer such as ethylene can be copolymerized with the above-mentioned SPP and IPP as long as no sticking occurs during spinning.
  • various stabilizers for example, an ultraviolet stabilizer, a heat stabilizer, a crystallization accelerator, a flame retardant, a K eraser, a pigment, an antibacterial agent, an antioxidant, and the like can be used.
  • the composite fiber may be melt-spun using a general composite die. That is, both composite components are separately melted by an extruder, then melt-spun together by a composite die, and quenched by cooling air. After quenching, oiling and winding as undrawn yarn. At this time, the film may be stretched at the same time as the spinning, or may be stretched after the spinning. In the case of stable, the welded yarn is bundled, stretched, oiled, machine crimped and cut. When used for spun yarn, the cut length is a normal stable length of 40 to 60 mm.
  • the length is often 3 to 6 mm, which is the same as the fiber length of pulp.However, when a cloud-shaped pattern is applied to paper, it is as long as 20 to 4 Omm. You may.
  • the composite fiber as the highly crimpable fiber of the first embodiment is stored in a state where the internal strain is left, and self-crimp is developed by heat treatment, for example, boiling water treatment, and is higher than the melting point of the SPP and lower than the melting point of the load-bearing component. At this temperature, it also exhibits fusibility.
  • the single fiber 5 deniers total denier below is less than 1 5 0 denier
  • 1 5 to 2 may be cooling air 0 ° C but, 1 5 e C or less in the case of more, preferably 1 It is preferable to perform quenching at 0 ° C. or less, and sometimes at 5 ° C. or less.
  • using core-sheath composite fibers and using IPP for the sheath significantly reduces sticking.
  • melt fluidity at the outlet temperature of the die that is, the fluidity at 220 to 300 ° C. is as equal as possible. This can be controlled by adjusting the average molecular weight and the molecular weight distribution.
  • the composite fiber filament of the present invention can be mixed with other fibers at the time of spinning, at the time of drawing, or at a subsequent step. It is also possible to use them together.
  • the conjugate fiber stable can be blended with another stable to produce the spun yarn of the present invention.
  • the spinning method is not particularly limited. It can be manufactured using commonly used short spinning, woolen spinning, woolen spinning, semi-woolen spinning, pneumatic spinning, binding spinning, lap spinning, etc.
  • the blending ratio of the conjugate fiber as the heat-fusible fiber of the second aspect of the present invention in the spun yarn is preferably at least 20% by weight, and more preferably at least 50% by weight. If it is less than 10% by weight, the heat-sealing effect is insufficient particularly in the case of heat-fusible fibers.
  • the blending ratio in the spun yarn of the conjugate fiber as the high crimping fiber of the first embodiment used as a bulky yarn is at least 50% by weight, preferably at least 70% by weight, more preferably 100 weight%. If the amount is less than 50% by weight, the bulkiness of the yarn due to the appearance of crimp is insufficient. In order to improve bulkiness, shrinkable fibers may be mixed, preferably at least 20% by weight.
  • the twist setting of the spun yarn can be performed with a dry heat or a wet heat of 40 ° C or more, and preferably 80 ° C or less. If the temperature is lower than 40 ° C, the set may be insufficient. If the temperature is higher than 80 ° C, crimps may partially appear, the texture may be hardened, and the knitting property may be reduced.
  • the twist coefficient varies depending on the spinning method, but a value smaller than a general value is preferable in terms of bulkiness.
  • the bulking of the spun yarn mixed with the conjugate fiber of the first embodiment can also be performed at the time of dyeing. Skew it like a regular bulky thread and do the bulking.
  • the nonwoven fabric of the present invention can be produced using the composite fiber of the present invention.
  • the method for producing the nonwoven fabric is not particularly limited. After carding, which is generally used, needle punching, thermal bonding, air laying, spunlacing, and wet papermaking can be used.
  • carding which is generally used
  • needle punching thermal bonding
  • air laying spunlacing
  • wet papermaking can be used.
  • the tensile strength and elongation in the machine direction (the direction along the machine axis of the fabric) and the cross direction (the machine width direction) are too large. Care must be taken to ensure that they do not differ significantly. If the tensile strength and elongation in the machine direction and the cross direction are significantly different, when drawing using this non-woven fabric, uneven spots are likely to occur in the direction of high tensile strength and elongation, resulting in uneven thickness of the product.
  • the difference in tensile elongation is preferably 30% or less, more preferably 15% or less. If the difference in tensile strength and elongation exceeds 30%, the thickness unevenness of the molded product may increase. Care must be taken especially when squeezing deeply. It is more preferable that the stress-strain curves in the machine direction and the cross direction match.
  • the mixing ratio of the fiber of the present invention in the nonwoven fabric is at least 10% by weight, preferably at least 50% by weight in the case of the heat-fusible fiber of the second embodiment, and the heat-fusing effect and moldability are good. And can be demonstrated.
  • the heat fusion effect increases as the mixing ratio of the heat fusion fiber of the present invention increases.
  • the spun yarn and the nonwoven fabric may be mixed with other fibers, for example, synthetic fibers, natural fibers, regenerated fibers, etc., as long as the bulkiness is not impaired.
  • the knitted fabric of the present invention can be manufactured using the above-described yarn or Z and the filament.
  • the method for producing the knit is not particularly limited. It can be knitted with a general circular knitting machine, ⁇ knitting machine, warp knitting machine or the like. Just match the gauge with the thickness of the thread. Change knitting, double side knitting, etc. are also possible. In double-sided knitting, not only ground yarn but also K thread can be used.
  • the method for producing the woven fabric is not particularly limited. It can be woven on a common loom. For example, weaving can be performed with an automatic power loom, a levia loom, an air loom, a water jet loom, or the like. It can be used for both warp and birch yarns of textiles. Also, by selecting a loom, double weaving can be performed like a moquette. Mesh weave is also available.
  • the knitted woven fabric using the highly crimpable conjugate fiber of the first embodiment of the present invention can be bulky simultaneously with the insertion of a nonwoven fabric by a heat treatment machine while the knitted fabric using the highly crimpable conjugate fiber can be used.
  • the knitted fabric using the heat-fusible conjugate fiber of the second aspect of the present invention can be similarly heat-sealed at the same time as radiating by a ten-day dryer or the like. As the knitted fabric is pulled and tensioned by the Ten-Ichi-Dryer, the number of contact points increases and the contact surface at each contact point increases, resulting in strong adhesion. Selection of the heat treatment temperature and heat treatment time in the above heat treatment machine largely depends on the efficiency of the heat treatment machine.
  • the knitted fabric depends on the basis weight of the knitted fabric and the density of the structure. Therefore, appropriate conditions should be selected as appropriate. Generally, it is performed in an atmosphere of 100 ° C. or more and less than 140 ° C. The processing time is 30 seconds or more, preferably 1 minute or more. In the case of performing the heat fusion in the second embodiment, it is preferable to select a heat treatment temperature not lower than the melting point of the SPP component and not higher than 20 ° C. of the melting point of the load-bearing component.
  • the conjugate fiber according to the second embodiment of the present invention is inexpensive, has excellent mechanical strength, has a flexible heat-sealed bonded portion, has a soft texture of a nonwoven fabric and a knitted woven fabric, and has a moderate stiffness.
  • the adhesion point is hard to be detached even by repeated bending or the like, and it is hard to peel between layers.
  • the paper of the present invention can be made using the binder fiber of the second aspect of the present invention.
  • the papermaking method may be a general papermaking method.
  • the pulp and binder fibers are beaten with a pulp mill, refiner, etc. to the required water content, and the necessary additives are added to dilute the pulp and binder fiber to about 0.1 to 0.5% by weight.
  • Paper is made with a fourdrinier. Then, it is dried by a roller drier or the like, and calendered if necessary.
  • the binder fiber as described above, as the binder fiber, as described above, a polymer having a specific gravity of 1.1 or more, for example, polyethylene terephthalate or polybutylene described above.
  • the specific gravity of SPP is about 0.9. Therefore, the apparent specific gravity of the binder fiber is larger than 1, and the binder fiber is easily dispersed in the step of dispersing in water, which is advantageous for performing beating or the like.
  • the amount of binder fiber added is at least 5% by weight, preferably at least 10% by weight. If the amount of the binder fiber is small, sufficient wet strength cannot be obtained.
  • additives examples include a paper strength agent, a sizing agent, a pigment, a flame retardant, and an antibacterial agent.
  • Pulp may be a commonly used pulp, for example, KPNB. Further, other fibers such as rayon, polyethylene, and polyester may be used in combination.
  • molded articles of appropriate shape by draw molding such as molding using the nonwoven fabric or knitted fabric of the present invention, for example, vehicle interior materials such as floor insulators and headliners, bed mats, seats, and chair cloths Upholstery such as upholstery, brassiere cups, corsets, hats, interlining, etc., and clothing materials can be manufactured.
  • vehicle interior materials such as floor insulators and headliners, bed mats, seats, and chair cloths
  • upholstery such as upholstery, brassiere cups, corsets, hats, interlining, etc., and clothing materials can be manufactured.
  • Heating can be carried out before molding, but there is no need for preheating. Also, by giving a temperature difference between the male and female molds during molding, the degree of heat fusion on the low-temperature side can be reduced, and the mold can be fluffed. This temperature difference is preferably at least about 30 ° C. By heating the mold only on the back side to make the fluff, a temperature difference is generated between the back and the front, and the temperature does not reach the temperature at which the surface is heat-sealed. The temperature difference between the back surface and the front surface depends on the thermal conductivity coefficient and the thickness of the nonwoven fabric. The above factors may be appropriately combined depending on the desired degree of fluffing.
  • the degree of heat fusion can be reduced and fluffing can be achieved by partially reducing the pressure.
  • This pressure difference can be achieved by partially reducing the contact pressure by making a difference in the mold clearance.
  • By partially increasing the contact pressure and performing heat fusion it is possible to reduce a decrease in wear resistance, which is a drawback caused by fluffing.
  • a pattern can be formed on the surface of the molded product, and the added value can be increased.
  • the pattern may be an embossed pattern.
  • the tensile strength of the molded article of the present invention can be adjusted by the basis weight of the nonwoven fabric, the number of fibers constituting the fiber, the mixing ratio of the heat-fusible fibers, the molding temperature during cross molding, the clearance of the molding die, and the like.
  • the molded article of the present invention can be a molded article composed of a fiber bundle having a piled surface by using a nonwoven fabric of a drill type in which needle punching is performed only in one direction.
  • basis weight when the molded article is molded article of the present invention is 1 0 0 ⁇ 3 0 0 g Z m 2 is preferred. If the basis weight is less than 100 g / m 2 , the strength is insufficient, and if the basis weight exceeds 300 g / m 2 , deep drawing becomes difficult. This is not the case for general compression molding.
  • the density of the molded article of the present invention is from 0.01 to 0.4 cm 3 , but when it is fluffed, the density of the surface becomes smaller and has a distribution in the thickness direction.
  • the molded article of the present invention can also be subjected to reinforcement molding by laminating on the back surface a drawable member such as a film or unstretched long-fiber nonwoven fabric. Further, the molded article of the present invention can be provided with a pattern by printing on a nonwoven fabric, a film or the like in advance.
  • the molded article of the present invention Since the molded article of the present invention is hot-melted and has a flexible bonding point, the molded article made of nonwoven fabric and knitted fabric has a soft texture. Therefore, even when the molded product is deformed, the bonding points are not broken and come off. This is a very important point when a molded product is repeatedly subjected to a load such as bending or compression during use. When the bonding point is hard, the pressure is extremely large because the bonding point is broken and reduced by the load repeatedly applied during use. On the other hand, the molded article of the present invention is inexpensive, has excellent mechanical strength, the heat-sealed adhesive portion is flexible, the texture is soft, and the adhesive point is detached even by repeated compression, bending and other loads. Difficult to slip and slip.
  • FIG. 1 is an example of a cross-section of a highly crimped conjugate fiber according to the first embodiment of the present invention, in which a core-sheath composite ratio is 1: 1, eccentric toward the center, and the eccentricity is slightly reduced.
  • FIG. 1 is an example of a cross-section of a highly crimped conjugate fiber according to the first embodiment of the present invention, in which a core-sheath composite ratio is 1: 1, eccentric toward the center, and the eccentricity is slightly reduced.
  • FIG. 2 is another example of a cross-section of the highly crimped conjugate fiber according to the first embodiment of the present invention, which has a core-in-sheath composite ratio of 1: 1 and is eccentric to the periphery and has a high degree of eccentricity. It is a cross-sectional view showing an example.
  • FIG. 3 is still another example of the cross-section of the highly crimped conjugate fiber according to the first embodiment of the present invention, which has a core-sheath composite ratio of 1: 3, and is eccentric near the periphery and has a high eccentricity. It is a cross-sectional view showing an example.
  • FIG. 4 is still another example of the cross section of the highly crimped conjugate fiber according to the first embodiment of the present invention, wherein the core-sheath composite ratio is 1: 3, the eccentricity is near the center, and the eccentricity is small. It is a cross-sectional view which shows the example which reduced by 1,000.
  • FIG. 5 is still another example of the cross section of the highly crimped conjugate fiber according to the first embodiment of the present invention, wherein the core-sheath composite ratio is 1: 1 and the core component is partially exposed and the eccentricity is high.
  • FIG. 6 is a cross-sectional view showing an example having
  • 1 is a core component composed of SPP
  • 2 is a sheath component composed of IPP.
  • the composite ratio of the composite fibers is a volume ratio, and the percentages and parts are on a weight basis.
  • Measurement of melt viscosity of polymer is J
  • the tensile strength of the composite fiber was measured in accordance with JIS L-1013.
  • the stiffness of the film, fabric, and paper was measured according to the 45 ° cantilever method of JIS L-106.
  • the wet tensile strength (wet strength) of paper is J I S P—
  • the sheath component B of the conjugate fiber As the sheath component B of the conjugate fiber, a commercially available IPP having a melt viscosity of 11 and a melting point of 161, and the above-mentioned SPP were polyblended, and IPP having an isotactic pentad component of 90% by weight was used.
  • the composite components A and B are melted separately in an extruder at ° C, weighed with a gear pump, and spun into an unstretched eccentric semi-circular core-sheath composite yarn (composition ratio: 1) with a composite ratio of 1: 1. did.
  • the cooling air temperature was set to 15 ° C, and the spinning oil was attached a little more than the usual IPP spinning and spun.
  • the fiber was stretched 4.3 times at 60 ° C. to produce a composite fiber of the present invention having 75 denier and 16 filaments.
  • the tensile strength of this composite fiber was 3.2 g / denier and the elongation was 38%.
  • the boiling water crimp number of this composite fiber was 72 inches.
  • IPP was polyblended with the kneader to the SPP produced in Example 1 and the blend ratio was changed to composite component A.
  • a synthetic fiber and a comparative product of test No. 6 were produced, and the measurement results of the number of crimps in boiling water are shown in Table 1.
  • the oil agent was lined with oil and pressed to produce the composite fiber stable 1.5 denier 51 mm of the present invention.
  • the number of crimps in boiling water was 67 Z inches.
  • Example 1 The SPP produced in Example 1 was polyblended with IPP using a kneader to make 5 PP with a syndiotactic pentad component of 80% by weight as composite component A, and the IPP with a higher IPP polyblend ratio as composite component B. As shown in Table 4, the ratio of the isotactic pentad component of the composite component B was changed, and the composite fiber of the present invention of Test Nos. 15 to 17 and the comparative product of Test No. 18 were compared. Table 4 shows the results of the measurement of the number of crimps of the manufactured and crimped boiling water. Table 4
  • Example 1 The composite components A and B produced in Example 1 were separately melted at 280 ° C. by an extruder and weighed by a gear pump, and a non-stretched side-by-side type composite yarn having a composite ratio of 1: 1 was produced. did.
  • the temperature of the cooling air was 5 ° C, and a large amount of spinning oil was attached to prevent sticking.
  • the fiber was drawn 4.3 times at 60 ° C. to produce a 75-denier 16-filament composite fiber of the present invention.
  • This composite fiber had a tensile strength of 3.3 g Z denier and an elongation of 32%.
  • the number of crimps in boiling water of this composite fiber was 61 Z inches.
  • IPP was blended with the SPP used in Example 7 using a kneader to change the blend ratio. Further, as the composite component A, a composite fiber of the present invention of Test Nos. 23 to 27 and a specific drawn product of Test No. 28 were produced in the same manner as in Example 7, and the spun denier was gradually reduced. Table 6 shows a comparison of denier after drawing, which causes agglomeration in spinning, and a measurement of the number of crimps in boiling water. The temperature of the cooling air was set at 20 ° C for easy comparison. Table 6
  • Example 8 In the same manner as in Test No. 26 of Example 8, the IPP of Example 7 was used as the composite component B, and the composite components A and B were separately melted with an extruder at 290 ° C.
  • the unstretched composite yarn having a composite ratio of 1: 1 is extracted using a side-by-side type composite die in a conventional manner, and the unstretched yarn bundle is bundled, stretched, and crimped. Oil was supplied and cut to produce a composite fiber stable 1.5 denier 51 mm of the present invention.
  • the number of crimps in boiling water was 65 Z-inch.
  • Example 9 of the present invention The composite fiber stable of Example 9 of the present invention, 1.5 denier, and a commercially available polyethylene terephthalate stable, 1.5 denier, 51 mm were blended, and after carding, cross-laid, and 40 cm in a conventional manner. Needle punching was performed with the number of 2 pieces, and the mixing ratio was changed to produce a nonwoven fabric having a basis weight of 100 g / m 2 . This non-woven fabric was bulked out with a hot air heat treatment machine at 200 ° C, and the rigidity was measured. The results are shown in Table 8. When the blending ratio was low, the stiffness of the comparative example was too low to give a stiff feel.
  • IPP was mixed with SPP used in Example 7 by a kneading machine, and 3 PP having a syndiotactic pentad component of 80% by weight was used as composite component A, and IPP having a higher IPP blend ratio was used as composite component.
  • B the isotactic pentad component ratio of the composite component B was changed as shown in Table 9, and the composite fiber of the present invention in Test N 0.37 to 39 and the comparative product of Test No. 40 were used.
  • spinning denier is gradually increased, and spinning Table 9 shows the comparison of denier at which sticking occurs and the measurement results of the number of crimps in boiling water.
  • the temperature of the cooling air was set at 20 ° C for easy comparison.
  • Isopropyl (cyclopentene pentagenyl-1-1 fluorenyl) zirconium dichloride and methylaluminoxane having an average degree of polymerization of 16 were used as polymerization catalysts at a ratio of 1: 150, and 2 (TC for 2 hours under pressure for 2 hours under normal pressure). After deashing treatment, it was washed with hydrochloric acid to produce SPP with a syndiotactic pentad component of 80% i.% Then, peroxide was added to depolymerize, viscosity was adjusted, and additives were added.
  • stearic acid Ca and 2,6-di-tert-butylphenol were added to produce a chip having a melt viscosity of 12 and used as the sheath component A of the composite fiber.
  • the melting point of this chip was 130 ° C Met.
  • Polyethylene terephthalate having a melt viscosity of 11 and a melting point of 255 ° C was used as the core component B of the conjugate fiber.Eight at 300, the components B were separately melted with an extruder and weighed with a gear pump. An undrawn yarn of a composite fiber having a composite ratio of 1: 1 was spun using a core-sheath type composite die in a conventional manner. The cooling air temperature was 5 ° C, and a large amount of spinning oil was attached to prevent sticking.
  • the fiber was drawn 4.3 times at 120 ° C. to produce a composite fiber of the present invention having 75 denier and 16 filaments.
  • the composite fiber had a tensile strength of 3.7 g nodenier and an elongation of 37%.
  • Isotactic propylene having a 90% isotactic propylene ratio (manufactured by Mitsui Toatsu Chemicals, Inc.) was blended with the SPP produced in Example 12 using a kneader, and the blend ratio was changed. A, and the test was performed in the same manner as in Example 12. 1 to 44 of the composite fiber of the present invention and a comparative product of Test No. 45 were produced, and the spin denier was gradually increased to reduce the denier at which sticking occurs during spinning. The results are shown in Table 10. The temperature of the cooling air was set at 20 ° C for easy comparison.
  • a chip of composite component A was hot-pressed into a 100-m-thick and 10-mm-wide film specimen to compare the stiffness. Thickness errors were corrected by calculation, and relative comparisons were made in% units based on Test No. 42. The specific product of test No. 45 was too hard.
  • Test 13 of Example 13 In the same manner as in Test 0.44, using polyethylene terephthalate having a melt viscosity of 11 and a melting point of 255 as core component B, composite component A was used at 300 ° C. , B were separately melted with an extruder, weighed with a gear pump, and an undrawn composite fiber yarn having a composite ratio of 1: 1 was spun using a core-sheath type composite die in a conventional manner. The unstretched yarn bundle was bundled, stretched, crimped, oiled, and cut to produce the composite fiber stable 1.5 denier 51 mm of the present invention.
  • the tricot was knitted with a 48 gauge tricot knitting machine, the knitted fabric was tenter-dried at 170 ° C., heat-sealed and set, and the stiffness was measured. The results are shown in Table 11 below.
  • Example 14 A mixture of 1.5 denier of the present invention of 1.5 and a commercially available polyethylene terephthalate stable 1.5 denier of 51 mm was mixed, and after carding, cross-laid, and 40 fibers were formed by a conventional method.
  • a non-woven fabric having a basis weight of 100 g / m 2 was produced by changing the cotton mixing ratio by needle punching with the number of fibers per cm 2 .
  • the nonwoven fabric was heat-sealed with a 200 ° C. hot roller, and the stiffness was measured. The results are shown in Table 12.
  • the comparative product lacked heat fusion and had poor shape retention.
  • a core polymer of composite component B was prepared by copolymerizing propylene with ethylene having a contact point of 152 ° C (comparative product) and isotactic polypropylene having a melting point of 16 ° C. Spinning was performed instead of (the present invention) to produce a specific drawn product and the composite fiber filament of the present invention.
  • the filaments in the same manner as in Example 1 4 knitting Toriko' Bok was heat sealed set Bok in tenter dryer at room temperature 1 6 0 e C. Both heat fusions were inadequate. Next, heat fusion was set at a temperature of 170 ° C.
  • the tricot using the conjugate fiber of the present invention was heat-sealed normally, while the comparative product was partially heat-fused at the core. A decrease in strength occurred.
  • Example 17 The composite of the present invention in which the nozzle shape of the composite die is changed in the same manner as in Example 12 to cover at least 60% of the cross-section of the composite fiber and wrap the two composite components inseparably. Filament and side-by-side filaments with 50% coverage around the cross section were produced.
  • the comparative product had the composite component A and the composite component B separated, but the tricot of the composite fiber of the present invention had the composite components A and B. Did not separate.
  • Example 17 Example 17
  • Example 2 Using the composite component A (SPP) produced in Example 1 as a sheath component and the composite component B (IPP) as a core component, the two components were separately melted at 280 ° C with an extruder, and were then mixed with a gear pump. After weighing, a non-drawn core-sheath type composite fiber having a composite ratio of 1: 1 was spun out. The temperature of the cooling air was set to 15 ° C, and the spinning oil was attached slightly more than in the case of ordinary IPP spinning, and spinning was performed.
  • SPP composite component A
  • IPP composite component B
  • the spun yarn is bundled, stretched 4.3 times at 60 ° C, heat-relaxed, oiled again, cut to a fixed length with a cutter, and mixed with 2 denier 6 mm Fiber was manufactured.
  • the tensile strength of this composite fiber was 2.8 g / denier, and the elongation was 48%.
  • the specific gravity was 0.90.
  • the thickness of this paper was 0.11 mm, the wet strength was 2.1 KgZ 5 cm, and the stiffness was 53 mm.
  • a composite fiber was manufactured by using only the SPP produced in Example 1 as a sheath and polyethylene terephthalate having an intrinsic viscosity of 0.65 as a core only.
  • the specific gravity of this composite fiber was 1.12. Since the specific gravity is greater than 1, it does not come up during the beat, Blending was easy and the beat time was significantly reduced. Using this composite fiber, the paper of the present invention was formed.
  • This paper was 0.09 mm, the wet strength was 2.5 KgZ 5 cm, and the stiffness was 48 mm.
  • Example 17 In the same manner as in Example 17, the composite form of the composite fiber was changed from the core-sheath type only to the side-by-side type, and the paper of the present invention was produced.
  • the thickness of this paper was 0.12 mm, the wet strength was 2.4 KgZ 5 cm, and the rigidity was 49 mm.
  • Example 17 In the same manner as in Example 17, the sheath component was changed to LLPE only, and the manufactured core-sheath composite fiber was used.
  • the thickness of the manufactured paper was 0.09 mm, and the wet strength was 2.0 kg. It was unchanged at / 5 cm, but the stiffness was hard at 89 mm.
  • Example 22 In the same manner as in Example 17, the composite form of the composite fiber was changed only to mix the core-sheath type and the side-by-side type at an equal weight, and the paper of the present invention was produced.
  • the thickness of this paper was 0.12 mm, the wet strength was 2.3 Kg, 5 cm, and the rigidity was 43 mm.
  • Example 22
  • the core-sheath type composite fiber of the present invention containing SPP as the sheath component A and polyethylene terephthalate as the core component B was spun, and the spun undrawn yarn bundle was bundled.
  • the film was stretched 3.3 times at 20 ° C. and crimped, and then an oil agent was supplied and pressed to produce a composite fiber stable 1.5 denier 51 mm.
  • Polystyrene was blended with isotactic polypropylene in the kneader to the SPP produced in Example 17, and the blend ratio was changed to composite component A.
  • the composite fibers of Tests N 0.56 to 59 were obtained.
  • untested yarn of the comparison No. 60 were manufactured, and the discharge rate was changed.
  • the total denier of the spun yarn was gradually increased, and the total denier at which sticking occurred during spinning was compared.
  • the results are shown in Table 14.
  • the cooling air temperature was set at 20 ° C for easy comparison.
  • the composite fiber stable of 1.5 denier 51 mm produced in Example 22 and a commercially available polyethylene terephthalate stable 1.5 denier 51 mm were blended, and the blending ratio of the composite fiber was changed to shorten the conventional method. 1/80 spun yarn was spun by spinning. Next, tricot was knitted with a 48 gauge tricot knitting machine and drawn and formed at 180 ° C with a molding machine. The depth of uniform squeezing was measured by changing the mold, and the results are shown in Table 15 Indicated (
  • Test No. 58 The conjugate fiber of the present invention of 1.5 was mixed with 1.5 denier 51 mm and commercially available polyethylene terephthalate staple 1.5 denier 51 mm, and after carding, cross-laying and 4 laying in a conventional manner. Needle punching was performed with a number of 0 cm 2 to change the cotton mixing ratio to produce a nonwoven fabric having a basis weight of 300 gZm 2 . This nonwoven fabric was drawn by a mold forming machine at a mold temperature of 180 ° C. Table 16 shows the results of the maximum depth that can be molded and drawn uniformly using a mold with a depth of every 0.5 cm. Table 16
  • Example 22 In the same manner as in Example 2, the core polymer of the component B was prepared by mixing a copolymer of propylene and ethylene having a melting point of 152 ° C (comparative product) with an isotactic polybroylene having a melting point of 16 ° C (this product). Invention), spun and compared. Using this stable material, a nonwoven fabric having a basis weight of 300 g / m 2 was produced in the same manner as in Test N 0.66 of Example 24. This nonwoven fabric was drawn by a molding machine at a mold temperature of 160 ° C. The molded product of the present invention could be molded uniformly at a depth of 1.5 cm, but the comparative product had a film shape. Money When the mold temperature was lowered to 150 ° C, the comparative product broke.
  • Example 24 In the same manner as in the test No. 66 of Example 24, the nozzle shape of the composite mouthpiece was changed so that at least 60% of the cross section of the composite fiber was covered and wrapped. We produced a side-by-side stable table (comparative product) with a 50% success rate around the table and cross section.
  • the composite components A and B were separated from the comparative product, but the composite components A and B were not separated from the nonwoven fabric of the composite fiber used in the present invention.
  • drawing was performed at a mold temperature of 160 ° C by a molding machine.
  • the molded article of the present invention could be uniformly molded at a depth of 1.5 cm.
  • the comparative product was broken.
  • Example 23 The spun yarn of No. 63 was made into a twin yarn, a plain fabric was manufactured with a driving number of 80 yarns / 25 mm, and drawn at a mold temperature of 180 ° C. with a molding machine. Molded. The molded product was a uniform product with a depth of 1.5 cm.
  • the polypropylene composite fiber of the present invention is a highly crimpable fiber that is easy to spin and is made of inexpensive polypropylene and has a large number of self-expressed crimps.
  • a fiber structure using the fiber, for example, a nonwoven fabric, a spun yarn, Knitted fabrics have excellent bulky properties and soft texture.
  • the polypropylene composite heat-fusible fiber of the present invention is inexpensive because it is made of an inexpensive polymer, has excellent mechanical strength, does not become hard at the heat-sealed portion, and is made of a fibrous structure such as a nonwoven fabric.
  • the texture of the knitted fabric and the molded product is flexible and has a moderate stiffness, and it is difficult for the bonding point to be detached even by a load such as repeated bending.
  • the paper comprising the polypropylene composite fiber of the present invention is inexpensive and has a wet strength. Excellent, showing moderate waist and soft texture. Therefore, the non-woven fabric or knitted fabric of the present invention can be used not only for clothing, but also for molded articles having an appropriate shape by drawing such as molding using shaving, for example, vehicles such as floor insulators and headliners.
  • upholstery products such as interior materials, bed mats, seats, upholstered chairs, etc., accessories such as bra cups, corsets, hats, interlining, etc. Provide products.
  • the paper of the present invention has a high wet strength and a soft texture, and is suitable as a sanitary material such as paper mumming, such as phishing paper and a food packaging material such as a tea bag.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nonwoven Fabrics (AREA)
  • Multicomponent Fibers (AREA)

Abstract

On produit des fibres associées et des fibres thermosoudables, se prêtant fort bien au frisage, en disposant de manière excentrique ou concentrique dans la section transversale d'un seul toron, un premier constituant fait d'un polypropylène (SPP) ayant un composant pentadique syndiotactique représentant au moins 55 % en poids de l'ensemble et un second constituant fait d'un polymère d'un point de fusion supérieur d'au moins 20 °C à celui du premier, puis en les associant uniformément le long de l'axe de fibre. Ces fibres associées ont montré leur utilité en tant que filaments ou fibres discontinues filées alors que les fibres thermosoudées se sont avérées utiles en tant que structures de fibres constitutives de matériaux tels que des non-tissés, des tissus chaînés et tramés et des tissus maillés, du papier et des garnitures. La structure contenant la fibre se prêtant fort bien au frisage est peu onéreuse, très volumineuse et douce au toucher. Celle qui est produite par thermosoudage, éegalement peu onéreuse, est dotée d'une résistance mécanique remarquable, ne souffre pas du durcissement de ses joints collés et est douce au toucher; elle ignore l'écrasement de ses joints collés du fait de leur résistance élevée même s'ils sont pliés et repliés et possède une remarquable résistance au mouillé. Ces deux structures fournissent des articles aussi variés que d'excellente qualité comme des garnitures intérieures pour automobile, des décorations et des accessoires, des tissus d'habillement, des fournituers médicales, des emballages alimentaires et des nécessaires journaliers.
PCT/JP1995/002638 1995-01-09 1995-12-22 Fibres associees et structure de fibres les contenant WO1996021759A1 (fr)

Applications Claiming Priority (14)

Application Number Priority Date Filing Date Title
JP1855295 1995-01-09
JP7/18552 1995-01-09
JP3923395 1995-02-02
JP7/39233 1995-02-02
JP7053522A JPH08226018A (ja) 1995-02-16 1995-02-16 複合繊維
JP7/53522 1995-02-16
JP7/59936 1995-02-22
JP7059936A JPH08269857A (ja) 1995-02-02 1995-02-22 成形品
JP7/59937 1995-02-22
JP7059937A JPH08246240A (ja) 1995-01-09 1995-02-22 複合繊維
JP7/171413 1995-06-13
JP17141395 1995-06-13
JP33812295 1995-12-01
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US10357410B2 (en) 2014-11-06 2019-07-23 The Procter & Gamble Company Pre-strained laminates and methods for making the same
EP3771761A1 (fr) * 2019-07-30 2021-02-03 Reifenhäuser GmbH & Co. KG Maschinenfabrik Non-tissé obtenues par fusion-soufflage des filaments continus et dispositif de production de non-tissé obtenues par fusion-soufflage
US11213436B2 (en) 2017-02-16 2022-01-04 The Procter & Gamble Company Substrates having repeating patterns of apertures for absorbent articles
RU2814058C2 (ru) * 2019-07-30 2024-02-21 Райфенхойзер Гмбх Унд Ко. Кг Машиненфабрик Нетканый материал "спанбонд" из непрерывных филаментов и устройство для изготовления нетканого материала "спанбонд"
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JPH03249265A (ja) * 1990-02-22 1991-11-07 Daiwabo Create Kk 架橋された耐熱性繊維および不織布
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US11633311B2 (en) 2014-11-06 2023-04-25 The Procter & Gamble Company Patterned apertured webs
US10646381B2 (en) 2014-11-06 2020-05-12 The Procter & Gamble Company Crimped fiber spunbond nonwoven webs / laminates
US11491057B2 (en) 2014-11-06 2022-11-08 The Procter & Gamble Company Crimped fiber spunbond nonwoven webs / laminates
US12226295B2 (en) 2014-11-06 2025-02-18 The Procter & Gamble Company Patterned apertured webs
US11135103B2 (en) 2014-11-06 2021-10-05 The Procter & Gamble Company Apertured webs and methods for making the same
US11202725B2 (en) 2014-11-06 2021-12-21 The Procter & Gamble Company Crimped fiber spunbond nonwoven webs / laminates
US12144711B2 (en) 2014-11-06 2024-11-19 The Procter & Gamble Company Patterned apertured webs
US10357410B2 (en) 2014-11-06 2019-07-23 The Procter & Gamble Company Pre-strained laminates and methods for making the same
US11324645B2 (en) 2014-11-06 2022-05-10 The Procter & Gamble Company Garment-facing laminates and methods for making the same
US12138144B2 (en) 2014-11-06 2024-11-12 The Procter & Gamble Company Patterned apertured webs
US11766367B2 (en) 2014-11-06 2023-09-26 The Procter & Gamble Company Patterned apertured webs
US10271999B2 (en) 2014-11-06 2019-04-30 The Procter & Gamble Company Crimped fiber spunbond nonwoven webs/laminate
US11998431B2 (en) 2014-11-06 2024-06-04 The Procter & Gamble Company Patterned apertured webs
US11213436B2 (en) 2017-02-16 2022-01-04 The Procter & Gamble Company Substrates having repeating patterns of apertures for absorbent articles
US12127925B2 (en) 2018-04-17 2024-10-29 The Procter & Gamble Company Webs for absorbent articles and methods of making the same
RU2814058C2 (ru) * 2019-07-30 2024-02-21 Райфенхойзер Гмбх Унд Ко. Кг Машиненфабрик Нетканый материал "спанбонд" из непрерывных филаментов и устройство для изготовления нетканого материала "спанбонд"
EP3771761A1 (fr) * 2019-07-30 2021-02-03 Reifenhäuser GmbH & Co. KG Maschinenfabrik Non-tissé obtenues par fusion-soufflage des filaments continus et dispositif de production de non-tissé obtenues par fusion-soufflage
WO2021018574A1 (fr) * 2019-07-30 2021-02-04 Reifenhäuser GmbH & Co. KG Maschinenfabrik Matériau non-tissé filé-lié constitué de filaments continus et dispositif de production du matériau non-tissé filé-lié

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