JP2838643B2 - Knitted fabric for pulp, method for producing the same, and pulp - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base cloth for pulp, a method for producing the base cloth, and a pulp using the base cloth.

[0002]

2. Description of the Related Art In recent years, plasters have been widely used as a kind of cataplasm, and a number of materials made of a water-soluble polymer-based composition mixed with a pharmaceutically active ingredient have been disclosed. When the acidity of plasters (including pulp other than plasters) is increased, the viscosity of plasters etc. decreases, causing the problem of so-called "back bleeding" where plasters penetrate into the back side of the pulp base cloth. Many developments of plasters and the like that do not cause bleeding have been announced (for example, JP-A-3-161436).

[0003] However, most of the pulp base cloth supporting the plaster or the like is a non-woven fabric having different expansion and contraction rates in the background, and the pulp base cloth needling the same is also disclosed in Japanese Patent Application Laid-Open No. HEI 11-214, 1993.
Although it is described in -121214, although stretched once, it has poor elasticity recovery power, the cloth is thick and heavy as described above, and a wavy relaxation part is formed in some parts, and it is easy to peel off from corners, You have not achieved your goal.

[0004] Most of hosiery, which is the other commercially available is a double-sided hosiery knitted fabric of the spun yarn, heavy also because of the thick,
The elongation percentage in the longitudinal direction is 140% to 180%, and the elongation percentage in the weft direction is 160% to 220%, which is different from the elongation percentage in the latitude and longitude. It often curls and peels off from the loosened part.

Further, the knitted knitted fabric has a relatively large knitted stitch, and the pressure at the time of applying a plaster or the like to the surface causes a problem of back bleeding in which the plaster or the like is pushed out to the back surface through the knitted fabric. When adhered to the skin, there is a risk that the plaster or the like may contaminate the underwear or the like.

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention is based on a knitted fabric using multifilament yarns of a thermoplastic synthetic resin such as polyester, and uses 10% to 45% more fiber than a double-sided knitted fabric. Less, lighter, and the growth rate of the process is almost the same,
Since the gap between each fiber is small and each untwisted fiber has a nonwoven fabric-like surface, it has excellent support force for plasters,
It is an object of the present invention to provide a base cloth which is not impervious to a plaster or the like when the plaster or the like is applied to the front surface, and has a high contraction recovery force or a high recovery speed after elongation.

The present invention also provides a method for producing a base cloth having the above-mentioned characteristics through a special process using a conventionally known apparatus. In addition, we will provide Pap to the market with a plaster coated on a base cloth with the above-mentioned properties, and when it is applied to the skin, Pup will expand and contract following the expansion and contraction of the skin, and will not peel off from the skin unnecessarily. To provide.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention relates to a flat knitted fabric knitted by a multifilament yarn made of a thermoplastic synthetic resin which has been subjected to a crimping process. 1 knitted mistake knitted cloth, any kind of a cross-inlay knitted cloth or a knitted cloth consisting of a group of laid-in knitted cloths in which an insertion yarn similar to the multifilament yarn is knitted for each course in one of these knitting methods. A knitted fabric, the weight of which is 100 cm × 100 cm is 40 g to 160 g, and under no load, the number of wells is 2.55 cm to 20 to 55;
In addition, the number of courses is 20 to 55 between 2.45 cm, and the elongation percentage of the course is approximately equal to 200% to 290%.
Its shrink recovery speed is between 80% / min and 95% / min,
A knit base fabric for pups, characterized in that the appearance is nonwoven fabric-like.

In order to achieve the above object, the multifilament yarn according to the present invention has a denier number of 30 to 150 and a filament count of 12.
It is preferable that the number be from 300 to 300.

In order to achieve the above object, the present invention relates to a flat knitted fabric knitted into a multifilament yarn made of a thermoplastic synthetic resin which has been subjected to a crimping process, a 1 × 1 knitted miss knitted fabric, A first method for producing any kind of knitted cloth of a cross-inlay knitted cloth or a knitted cloth consisting of a group of lay-in knitted cloths in which an insertion yarn similar to the multifilament yarn is knitted for each course in one kind of knitting method Process,

[0011] 30% to 50% of the knitted fabric in the feed direction
A second step of feeding while relaxing, stretching to the extent that the relaxation is removed in the width direction, and setting by applying heat lower than the crimping temperature, kneading with heat, and crimping the yarn The crimp of the processed multifilament yarn is developed, the elongation percentage of the process is approximately equal to 200% to 290%, and the shrinkage recovery speed is 80% / min to 95% / min. The third step is a method for producing a knitted base fabric for pupping, comprising the above three steps.

[0012] In order to achieve the above object, it is preferable that the kneading process involving heat in the method for producing a knitted base fabric for pulp according to the present invention is a process using a hot air blowing method.

[0013] In order to achieve the above-mentioned object, the method of producing a knitted fabric for pulp according to the present invention may be characterized in that the kneading process involving heat is a process of dipping in hot water.

In order to achieve the above object, the multifilament yarn used in the method for producing a knitted base fabric for pulp of the present invention has a denier number of 30 to 150 and a filament count of 12. Thirty to thirty
Preferably, 0 is used.

Further, in order to achieve the above-mentioned object, a related invention of the knitted base fabric for pulp of the present invention is a flat knitted fabric made of a crimped thermoplastic synthetic resin multifilament yarn. A knitted cloth, a 1 × 1 knitted mistake knitted cloth, a cross-inlay knitted cloth or a knitted cloth composed of a group of laid-in knitted cloths in which the same insertion yarn as the long fiber yarn is knitted for each course in a kind of knitting method. Any kind of knitted cloth, this knitted cloth is 10cm × 10c
m is 40 g to 160 g, the number of wells is 20 to 55 in 2.45 cm under no load, the number of courses is 20 to 55 in 2.45 cm, and the elongation of the course is 200 % To 290%, the shrinkage recovery rate is 80% / min to 95% / min, and the appearance is a non-woven fabric. The overall elongation percentage is 200% to 290%, the shrinkage recovery rate is 70% / min to 90% / min, and a non-breathable film is formed on the plaster application surface. A pup is characterized by being adhered.

Further, in order to achieve the above-mentioned object, a related invention of the knitted base fabric for pulp of the present invention is characterized in that the multifilament yarn has a denier number of 30 to 150.
Preferably, the filament count is set to 12 to 300.

[0017]

According to the first aspect of the present invention, since each of the long fibers constituting the multifilament yarn fully develops a crimped state, since it is constituted as described above.
Both the number of wells and courses between 45 cm are 20 to 55
Fine, between each fiber is fine, untwisted and presents a sufficiently crimped nonwoven fabric, even when applying a plaster or the like to this, the plaster etc. from these fiber gaps to the back It does not penetrate and supports the plaster well on one side of the base fabric.

The fibers constituting the base fabric are multifilaments, and each fiber is in a state in which the fibers are crimped. Even if a plaster or the like is applied, the elasticity of the process and the shrinkage recovery force are sufficiently maintained.

The base cloth weighs 100 g × 100 cm and weighs 40 g to 160 g, so it is 10 to 40% lighter than conventional non-woven fabrics and double-sided knitted fabrics, and the part where human body intersects and stretches sharply. Follows well even if affixed to

The multifilament yarn of the invention according to claim 2 has a denier number of 30 to 150 and a filament count of 12 to 300, so that each fiber constituting the multifilament yarn is Since the fibers are untwisted and separated from each other and are in a crimped state, the gap between the fibers is extremely fine, and the supporting force or holding force of the plaster or the like is excellent. Even after sticking to the skin, it acts to prevent the plaster or the like from seeping out on the back surface.

Since it is constructed as described above, a plaster or the like is applied to one side to make a pulp. When the product is distributed as a product, a water-impermeable and non-breathable film is attached to the coating surface of the plaster or the like, and the product is packaged in a water-impermeable and non-breathable outer bag.

In the method for producing a pulp base fabric according to the first and second aspects of the present invention, a normal circular knitting machine or a flat knitting machine is used in the first step. The flat knitted 1 ×
One knitting mistake knitting, a cross-inlay knitted fabric or a laid-in knitted fabric in which an insertion yarn similar to the multifilament yarn is knitted for each course in one kind of knitting method, is knitted by a usual method.

Next, in the second step, the knitted fabric is fed while being relaxed in the feed direction by 30% to 50%, and is stretched in the width direction to such an extent that the looseness is removed, and is lower than the temperature at the time of crimping. Set with heat. By doing so, the knitted fabric is set in a state where the elongation percentages are almost equal in the weft direction.

Next, when this is subjected to a kneading process involving heat, the crimped state of each fiber of the crimped multifilament yarn is fully exhibited, and the number of wells and courses between 2.45 cm is 20. 2. A non-woven fabric-like appearance, wherein the elongation percentage in the process is approximately equal to 200% to 290%, the shrinkage recovery rate is 80% / min to 95% / min. Is manufactured.

According to the fourth aspect of the present invention, when the method of the third aspect is carried out, the knitted fabric is processed without getting wet because the method uses hot air as a kneading process involving heat.

According to a fifth aspect of the present invention, when the method of the third aspect is carried out, the method is a method of immersing in hot water as a kneading process involving heat. Apply. Usually, a drying step is added thereafter.

According to a sixth aspect of the present invention, in the method of the third aspect, the multifilament yarn has a denier number of 30 to 150 and a filament count of 12 to 300. Thus, each fiber constituting the multifilament yarn is fully developed in a crimped state individually by the kneading process involving heat, and the inter-fiber gaps of the completed base fabric are extremely finely dispersed.

According to the seventh aspect of the present invention, there is provided the first aspect.
It is one that the plaster or the like is applied to one side of the pulp base fabric of the invention of the described product, peeling off the non-permeable film,
A surface such as a plaster is attached to the affected part of the human body. By doing so, the adhesive force of the plaster or the like adheres, and the base cloth for the pulp is 200% to 290% in the longitudinal direction in a state where the plaster or the like is applied, and the shrinkage recovery speed is 70%.
% / Min to 95% / min, so that it can fully expand and contract in accordance with the expansion and contraction of the human skin in that part, and since the base fabric itself is lightweight as described above, Does not exfoliate from the skin without being held down with an adhesive bandage or elastic mesh. Further, during the effective period of the plaster or the like, the plaster or the like is sufficiently supported or held by the nonwoven fabric-like base fabric for a cataplasm, and the plaster or the like does not substantially exude to the back surface and acts to suffice the affected area.

In the invention according to claim 8, the multifilament yarn has a denier number of 30 to 150 and a filament count of 12 to 30.
Since it is characterized by being set to 0, the gap between the fibers of the base fabric is extremely fine, and the plaster or the like applied on one side hardly oozes on the back side.

[0030]

[Embodiment 1] An embodiment including the first to sixth aspects of the present invention.
This multifilament yarn has a denier number of 75 and a filament count of 15, and is obtained by crimping the multifilament yarn. The flat knitted knitted fabric is obtained by using a flat knitting machine. Use a knitted fabric.

Next, the flat knitted knitted fabric is fed using a tenter at a speed 30% to 50% faster than the feeding speed of the tenter, that is, overfeeded, and the loosening of the knitted fabric in the weft direction disappears. It is heat-set once at a low temperature of about 60 to 70 ° C. lower than the temperature at the time of crimping.

Next, this is subjected to kneading by hot air blown to a temperature close to the temperature at the time of crimping, thereby restoring the memory of the crimping of each fiber constituting the knitted fabric. A knitted fabric having 32 wells and 51 courses was obtained between .45 cm. Its weight is 85 g / m ²
Met.

Embodiment 2 A nylon multifilament yarn which is an embodiment including the invention as set forth in claims 1 to 4 and which has been subjected to crimping, wherein the denier number is 70 and the filament count is 2
4 and a flat knitted knitted fabric, and the subsequent processing was performed in the same manner as in Example 1 to obtain 2.54c.
A base cloth having 32 wells and 38 courses between m was obtained. The weight was 70 g / m ² .

Embodiment 3 As in the other embodiments, this embodiment is an embodiment including the invention according to claims 1 to 4. When knitting a flat knitted knitted fabric similar to that of the first embodiment, a cross-inlay knitted fabric was used in which an insertion yarn 11 similar to the multifilament yarn 10 was inserted for each course (see FIG. 1). After that, a base cloth was obtained. The number of wells of this base cloth between 2.54 cm is 3
1. The number of courses is 51 and 95 g / m ² .

The material of the multifilament yarn used in each of Examples 1 to 3 is merely an example, and other synthetic resin long fibers may be used. For example, vinylon, vinylidene, poly It may be vinyl chloride, acrylic, polyethylene, polypropylene, polyurethane, or the like. If the denier number is in the range of 50 to 150, and the filament count is in the range of 12 to 300, the embodiment of the present invention can be appropriately combined with the above-described embodiment. included.

In Example 3, the multifilament yarn and the inserted yarn are exactly the same. However, even if the multifilament yarn and the filament count are different from each other, it is also possible to use another synthetic resin long fiber crimp made of a different material. Even processed fibers are included in the embodiments of the present invention.

Although not described in the above embodiment, 1 × 1
Even if the knitted mis-knitted knitted cloth (see FIG. 3) or the lay-in knitted cloth (see FIG. 2) in which the insertion yarn 11 of the cross-inlay is not held down by the knitting yarn serving as the multifilament yarn 10 (see FIG. 2), the embodiment of the present invention will be described. included.

Operation of the embodiment The operation of the first to third embodiments will be described below. The elongation percentage of the process is as shown in Table 1. The measuring method conformed to JIS, and the temperature during the measurement was 36 ° C.

[0039]

Table 1 Elongation in the warp direction Elongation in the weft direction Example 1 340% 340% Example 2 320% 320% Example 3 280% 270% Reference Double-sided knitting (commercially available) 150% 320% Non-woven fabric 210 % 300% Further, the shrinkage recovery speed in the course is as shown in Table 2.

[0040]

[Table 2] Latitudinal direction Latitudinal direction Example 1 85% / min 85% / min Example 2 90% / min 85% / min Example 3 95% / min 85% / min Reference Double-sided knitting (commercially available) 90% / min 80% / min Non-woven fabric 60% / min 10% / min

In Table 2, the shrinkage recovery speeds of Examples 1 to 3 are described in minutes, but actually recover to approximately the values in Table 2 within 3 seconds. Embodiments 4 and 6 These are embodiments of the invention according to claims 5 to 7, and are water-soluble and have a viscosity of 10 cps to 3000 cps as a plaster or the like on one side of the base fabric of the embodiment 1 to embodiment 3. When the viscosity is preferably 10 cps or less, there is a risk of permeation. When the viscosity exceeds 3000 cps, the coating itself becomes difficult. This plaster was applied at a rate of 100 g / m ^{2, and} a water-impermeable airtight film was further adhered to the applied surface. Usually, several of these paps are sealed in a non-breathable outer bag.

Examples of the plaster or the like include alkali metal salts of polyacrylic acid such as sodium salt of polyacrylic acid;
A copolymer of maleic anhydride and another monomer is used, but is not limited thereto.

Actions of Examples 4 to 6 In use, the outer bag is opened, the airtight film is peeled off, and the film is attached to the affected part of the human body. Follows the flexion and extension of the elbow etc.
Some parts relax and do not peel. The rate of elongation before and after being applied to the affected area of the pup is as follows.

[0044]

Table 3 Elongation in the warp direction Elongation in the weft direction Example 4 230% 240% Example 5 220% 230% Example 6 235% 230% Reference Double-sided knitting (commercially available) 150% 240% Non-woven fabric 210 % 300% Further, the shrinkage recovery speed in the course is as shown in Table 4.

[0045]

[Table 4] Radial direction Weft direction Example 4 85% / min 75% / min Example 5 85% / min 80% / min Example 6 90% / min 85% / min Reference Double-sided knitting (commercially available) 88% / min 80% / min Non-woven fabric 60% / min 10% / min

[0046]

According to the first aspect of the present invention, the stitch is formed in the well,
The course is fine, and each filament constituting the multifilament yarn is sufficiently crimped, so even when applying a plaster or the like on one side, even after applying it to the skin, the plaster etc. There is no danger of seepage on the back,
This can be sufficiently supported.

The expansion and contraction ratio of the base fabric is almost the same, and the expansion and contraction of the base cloth are rich, and the expansion and contraction ratio of the background is not extremely different from that of the conventional double-sided knitting. Unlike those that do not recover, the contraction recovery or contraction recovery speed is fast. Also, the weight per unit area is 10% to 4% of the conventional double-sided knitted or nonwoven fabric.
Even if it is 0% lighter and has the same adhesive strength as the same plaster or the like, there is little risk of peeling because of its light weight.

In the case of a cross-inlay knitted fabric or a lay-in knitted fabric, since the insertion yarn is in a cross-linked state in the loop or sinker portion of the knitted course of each base fabric, the stitches of the knitting yarn made of multifilament yarn are used. The gap is closed by the insertion thread, the mesh is finer, the surface area is increased, and the supporting force of the plaster or the like is higher.

According to the second aspect of the present invention, the effect is the outer multifilament yarn of the first aspect of the present invention, wherein the denier number is 30 to 150 and the filament count is 15 to 300. Each filament constituting the filament yarn is crimped independently, and the supporting force of the plaster or the like is further increased due to the fineness of the gap and the increase in the fiber surface area.

In the method according to the third aspect, the first aspect is as follows.
In the first step of knitting, knitting can be performed using a flat knitting machine or a circular knitting machine that is extremely commonly used. In the second step, the material is relaxed by 30% to 50%, tentered, and heat-set at a temperature lower than the temperature at the time of crimping, that is, at a temperature at which the crimping effect is not lost. Have the same effect.

Finally, by the kneading process involving heat, the crimping process which has been processed into each filament constituting the multifilament yarn is fully expressed again, and the knitted fabric as a whole shrinks in the direction of the course, The knitted fabric according to claim 1 or 2 can be manufactured, and the manufacturing cost is reduced.

In the method according to the fourth aspect of the present invention, since the hot air kneading is performed, the knitted fabric is not wet and each fiber exhibits a sufficient crimp state.

In the method according to the fifth aspect of the present invention, since the kneading process is a process of immersing in hot water, the hot water has a large heat capacity and heats each fiber almost uniformly. However, a drying step after kneading is required.

In the invention according to claim 6, since the multifilament yarn is a bundle of 30 or more thin filaments, these are independently crimped by the kneading process, and the base fabric is finely divided. The appearance is completely non-woven fabric, the total surface area of the fibers is large, the support rate of the plaster etc. is sufficiently high, and there is no risk of seepage to the back surface.

In the pup according to the seventh aspect, since the base cloth has the above-described characteristics, even if the pup is attached to a highly elastic portion such as an elbow or a knee, the pulp may have the same characteristics as described above. It has the same high expansion and contraction rate, and its contraction recovery speed or recovery force sufficiently follows the flexion and extension of elbows and knees. There is no relaxation and there is no risk of peeling during the shelf life of the plaster, so there is no need to hold down the outer surface with a bandage or net.

Also, since the base cloth is coated with a plaster or the like as described above, it is excellent in holding or supporting force of the plaster or the like, hardly seeps to the back surface, and stains clothes with the plaster or the like. There is no fear. In addition, since the multifilament yarn constituting the base fabric, or the knitting yarn and the insertion yarn made of the multifilament yarn are both formed of the synthetic resin multifilament yarn, there is no fluff and there is a fine space between the fibers. However, since it is completely open, it has excellent breathability and enhances the anti-inflammatory effect on the affected area.

In the invention according to claim 8, since the filament count of the multifilament yarn is large and thin, the space between the fibers is fine, the total surface area is large, and the base fabric itself sufficiently covers the plaster or the like. It is supported or held and does not seep to the back of the base fabric.

Effects of Examples As effects of Examples 1 to 3, as shown in Tables 1 and 2, the elongation rate and shrinkage recovery force or speed of the base fabric are superior to those of the conventional nonwoven fabric, and the weight and As shown in Table 5 below, the thickness is light, the thickness is thin, and it is excellent as a base cloth for pulp.

[0059]

Table 5 Weight Thickness Example 1 85 g / m ² 0.5 mm Example 2 70 g / m ² 0.4 mm Example 3 95 g / m ² 0.55 mm Conventional nonwoven fabric 100 g / m ² 1.5 mm Double-sided knit 150g / m ² 0.65mm

[Brief description of the drawings]

FIG. 1 is a partial plan view of a cross-inlay knitted fabric.

FIG. 2 is a partial plan view of the lay-in knitted fabric.

FIG. 3 is a partial plan view of a 1 × 1 knit mistake knitted fabric.

[Explanation of symbols]

 10 Multifilament yarn 11 Insertion yarn

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A61K 9/70 D04B 1/00

Claims (8)

(57) [Claims] 1. A flat knitted fabric knitted by a multifilament yarn made of a thermoplastic synthetic resin which has been subjected to crimping, a 1 × 1 knitted mis-knitted fabric, and a knitting method of one kind among these, for each course. Any kind of knitted cloth of a group of cross-inlay knitted cloth or lay-in knitted cloth in which the same insertion yarn as the multifilament yarn is knitted, the knitted cloth having a weight of 100 cm × 100 cm is 4
0 g to 160 g, with no load
The number of wells is 20 to 55 in 2.45 cm, the number of courses is 20 to 55 in 2.45 cm, the elongation of the course is approximately equal to 200% to 290%, and the contraction recovery speed is 80%. % / Min to 95% / min, and has a nonwoven fabric-like appearance. 2. The multifilament yarn has a denier number of 30 to 150 and a filament count of 1
The knitted fabric for puppets according to claim 1, wherein the number is from 2 to 300. 3. A flat knitted fabric knitted into a multifilament yarn made of a crimped thermoplastic synthetic resin.
No. 1 knitted mistake knitted cloth, any kind of cross-inlay knitted cloth or knitted cloth consisting of a group of laid-in knitted cloth in which the same insertion yarn as the multifilament yarn is knitted for each course in one of these knitting methods A first step of manufacturing a knitted fabric, feeding the knitted fabric while relaxing it in the feed direction by 30% to 50%, stretching the fabric in the width direction to the extent that the relaxation is removed, and applying heat lower than the crimping temperature; The second to set
This is kneaded with heat to develop crimping of the multifilament yarn obtained by crimping the yarn, and the elongation percentage in the process is approximately equal to 200% to 290%, and the shrinkage recovery speed is A third step of forming a nonwoven fabric-like appearance at 80% / min to 95% / min, comprising the above three steps; 4. The method according to claim 3, wherein the kneading process involving heat is a hot air blowing process. 5. The method according to claim 3, wherein the kneading process involving heat is a process of dipping in hot water. 6. The multifilament yarn has a denier number of 30 to 150 and a filament count of 1.
The method for producing a knitted knit base fabric according to claim 3, wherein 2 to 300 are used. 7. A flat knitted fabric knitted by a multifilament yarn made of a thermoplastic synthetic resin subjected to crimping, a 1 × 1 knitted mis-knitted fabric, and a knitting method of a kind among these, for each course. Any kind of a knitted cloth made of a group of a cross-inlay knitted cloth or a lay-in knitted cloth in which the same insertion yarn as the long fiber yarn is knitted, and this knitted cloth weighs 10 cm × 10 cm and weighs 40 g to 160 g.
In a state without load, the number of wells is 20 to 55 between 2.45 cm, the number of courses is 20 to 55 between 2.45 cm, and the elongation of the course is 200% to 290%. Approximately equal, and the contraction recovery speed is 80
% / Min to 95% / min., Which is a nonwoven fabric-like base cloth. One side of the base cloth is coated with a paste-like plaster, and the overall elongation is 200% to 290%.
% And its shrink recovery speed is 70% / min to 90%
/ Min, and a non-breathable film adhered to the plaster application surface. 8. The multifilament yarn has a denier number of 30 to 150, and a filament count of 12.
8. The pup according to claim 7, wherein the number is from 300 to 300.