JPH06322648A - Synthetic fiber fabric and its production - Google Patents

Abstract

PURPOSE:To obtain synthetic fiber fabric, suitable as clothes for physical training and excellent in friction melting and pilling resistance. CONSTITUTION:The synthetic fiber fabric is a multilayer structural knit fabric having a surface part constructed from synthetic fiber and contains cotton in at least one kind constituting the fiber constituting either of middle and back surface layers. The content of the cotton is >=10wt.% based on the whole.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic fiber cloth excellent in abrasion resistance and pill resistance and a method for producing the same.

[0002]

2. Description of the Related Art Thermoplastic synthetic fibers such as polyester and nylon have strength, lightness, quick-drying property, dimensional stability, stretchability, fit property, wash-and-wear property and various properties as compared with natural fibers such as silk. Since it is advantageous in terms of selectivity, it is often used for physical education clothing such as training wear. However, due to recent improvements in gymnasiums and other facilities, when athletes often play indoors, when the athlete slides on the floor, falls, etc., friction between the floor and the gym clothing is generated. Since heat is generated, not only does the cloth made of thermoplastic synthetic fibers used in physical education clothing melt and tear due to frictional heat and pressure,
Athletes may get burned.

As a means for solving such a problem, as described in Japanese Patent Publication No. 57-37713,
Friction heat is reduced by bonding the organopolysiloxane to the fiber surface of the cloth made of thermoplastic synthetic fiber through the film covering the fiber made of triazine-based or melamine-based polymer to reduce the friction coefficient of the cloth surface. There are some that are designed to suppress the occurrence of. However, this method is one in which the fabric surface is treated by immersing the fabric in a treatment liquid containing silicone, that is, organopolysiloxane, or by spraying the treatment liquid onto the fabric, and the texture is excellent. It is still at an insufficient level under the strong conditions of abrasion resistance and pill resistance.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a synthetic fiber cloth which is substantially effective in abrasion resistance and pill resistance in comparison with the conventional state as described above.

[0005]

The present invention includes: It is a multilayer structure knitted fabric, the surface portion of which is composed of synthetic fibers, and at least one kind of fibers constituting either the middle layer or the back layer is cotton, and the cotton is 10% by weight of the whole.
A synthetic fiber cloth, characterized in that it is used in a content ratio as described above. 2. The surface portion is composed of synthetic fibers, and at least one kind of fibers constituting either the middle layer or the back surface layer is composed of spun yarn containing 35% or more of cotton by weight of the spun yarn.
2. The spun yarn is knitted in 2/3 or more of the total number of stitches in the layer, and when knitting the remaining 1/3 or less stitches, knitting is performed without using all needles on either the dial side or the cylinder side. Synthetic fiber cloth. 3. It is a multilayer structure knitted fabric, the surface portion of which is composed of synthetic fibers, and at least one kind of fibers constituting either the middle layer or the back layer is cotton, and the cotton is 10% by weight of the whole.
On the surface of the multi-layered structure knitted used in the proportion of containing above,
2. The synthetic fiber cloth as described in 1 above, wherein a combination resin of a polyethylene resin and an acrylic ester / methacrylic acid / butadiene copolymer latex and a polyfunctional isocyanate is applied.

4. The surface portion is composed of synthetic fibers, and at least one kind of fibers constituting either the middle layer or the back layer is composed of spun yarn containing 35% or more of cotton by weight of the spun yarn. A knitted fabric in which 2/3 or more of the total number of stitches of a layer is knitted, and when knitting the remaining 1/3 or less of stitches, neither the dial side nor the cylinder side is knitted without using all needles, The combination resin of a polyethylene resin and a binder composed of an acrylic ester / methacrylic acid / butadiene copolymer latex and a polyfunctional isocyanate is applied, and the above 1 or 2 and 3 or 3 above. Synthetic fiber cloth. 5. The resin applied to the surface portion whose surface portion is composed of synthetic fibers is a composition comprising a high-melting point polyethylene emulsion and a binder composed of an acrylic ester / methacrylic acid / butadiene copolymer latex, and a polyfunctional isocyanate. 3. The synthetic fiber cloth according to the above 3 or 4 above. 6. The method for producing a synthetic fiber cloth according to the above 3 or 4 or 5 above, wherein a foaming method is carried out when the combination resin is applied or the resin composition is applied. By doing so, the purpose is achieved.

The details will be described below. The present invention was obtained by searching for performances that are cheaper and have excellent resistance to frictional melting and pill resistance in consideration of physical education clothing as a main application. The synthetic fibers used to form the surface portion in the present invention may be polyester-based, polyamide-based, polyacrylic-based, polyolefin-based, etc. that are generally used for clothing, and are not particularly limited. From the viewpoints of processing convenience, product quality, etc., polyester fibers are preferable.

The first characteristic of the synthetic fiber cloth according to the present invention is a multi-layer structure knitted fabric, the surface portion of which is composed of synthetic fibers, and at least one kind of fibers constituting either the middle layer or the back layer is formed. Cotton is a synthetic fiber cloth used in a proportion of 10% by weight or more based on the total weight of cotton. That is, the overall structure is a multi-layer structure knit. And one of the surfaces is normally used as a surface, but the outer surface is composed of synthetic fibers. And cotton is used in the fibers that make up the middle layer or the back layer, and the usage fee for cotton is
It is 10% by weight or more of the fiber constituting the entire multilayer knitted fabric.

The fact that the whole is made of a multi-layered knitted fabric makes it possible for the clothing to easily follow the movements of various parts of the body when, for example, a clothing for physical education is manufactured using this fabric. Moreover, when following, it retains an appropriate amount of resistance and can restore its original beautiful shape even after active exercise. Furthermore, the fact that the surface is composed of synthetic fibers not only makes the appearance glossy and beautiful, but also makes it slippery, so it improves the movement of each part of the body, especially the sliding of parts that rub against each other, It can perform a sufficient function as clothing.

Further, the fact that 10% by weight or more of the total fiber is used in the middle layer or the back layer is a drawback associated with the fact that the surface is composed of synthetic fibers, that is, the surface is external, such as a floor. , It resists frictional melting that occurs when it comes into strong contact with pillars or the like and causes friction, and functions to prevent expansion of the melted portion or perforation. That is, even if the surface melts, the holes generated by the melting are blocked by the presence of the cotton in the middle layer or the back surface, and the holes do not penetrate the cloth. If the amount of cotton is too small, the deterrence will be insufficient. If it is 10% by weight or less, it is difficult to exert its significance.

In the present invention, as a synthetic fiber cloth having a preferred multilayer structure, the surface portion is composed of synthetic fibers, and at least one kind of fibers constituting either the middle layer or the back layer is cotton spun yarn. It is composed of spun yarn containing 35% or more of the weight, and the spun yarn is 2 / the
When knitting 3 or more, and knitting the remaining 1/3 or less stitches, it is possible to obtain a knitted piece without using all needles on either the dial side or the cylinder side. In this case, the middle layer or the back surface is composed of spun yarn, which contains 35% by weight or more of cotton. In addition, the spun yarn is knitted in 2/3 or more of the total number of stitches in the layer, and when knitting the remaining 1/3 or less stitches, no needles are used on either the dial side or the cylinder side.

The synthetic fiber cloth thus obtained has excellent stretchability and recoverability as a physical education garment, and exhibits sufficient friction melting resistance. That is, when viewed as a synthetic fiber cloth as a whole, the expansion, contraction, and recovery of each part of the front and back are kept extremely appropriate, and the surface may be stretched or drooped to lose its shape even after repeated heavy use. In addition, since it shows sufficient friction melting resistance, it does not cause pores in the entire fabric, does not cause structural destruction of the entire knitted fabric constituting the fabric, and blocks friction heat generated on the surface, Or it has a lowering effect and can be used safely.

Further, according to the present invention, cotton is used in the fiber which has a multi-layer structure and constitutes the middle layer or the back layer, and the amount of the cotton used is 10% by weight of the whole multi-layer knitted fiber.
As described above, the surface is composed of synthetic fibers, and a combination resin of a polyfunctional isocyanate with a binder composed of a polyethylene resin and an acrylic ester / methacrylic acid / butadiene copolymer latex is formed on the surface composed of synthetic fibers. Provided is a synthetic fiber cloth.

Generally, a silicone emulsion is applied in order to improve the abrasion resistance. In this case, the friction melting resistance can be improved, but the pill resistance is not improved. The generation of pills is not only unfavorable for the appearance of physical education clothing, but also unfavorable because it impairs the smoothness of movement. Therefore, in the present invention, the polyethylene resin is used. However, a polyethylene resin alone is insufficient because it lacks durability even though it has improved friction melting resistance and pill resistance. Therefore, in the present invention, by using a binder in combination,
It is intended to secure durable friction melting resistance and anti-pill resistance.

However, as the binder for fibers, vinyl acetate-based, silicon-based, acrylic ester-based, polyurethane-based, melamine-based, polyamide-based, etc. binders are generally used, and these binders form films at low temperatures. , Solution stability, workability, wash resistance,
It is not possible to satisfy all the requirements such as compatibility with other components and the texture function of the product. For example, vinyl acetate type and melamine type have a problem in durability and a problem in texture. Silicone-based materials have a problem that they slip too much when worn, and polyurethane-based and polyamide-based materials have a problem that they lack durability.

In the present invention, in order to solve these problems,
Acrylic ester / methacrylic acid / as a binder
These problems have been solved by using a binder composed of a butadiene copolymer latex. This binder can meet all the requirements of film-forming property at low temperature, solution stability, workability, washing resistance, compatibility with other components, texture function of products, etc. To ensure sex and anti-pill properties.

In the present invention, a polyfunctional isocyanate is used. This is because by using the polyethylene resin in combination with the polyfunctional isocyanate and the binder, the friction melting resistance and the pill resistance are improved.

The polyfunctional isocyanate may be any organic compound containing two or more isocyanate functional groups in the molecule, such as 2,4-, 2,6-tolylene diisocyanate and trimethylolpropane tolylene diene. Isocyanate adduct, trimethylolethane tolylene diisocyanate adduct, glyceryl tolylene diisocyanate adduct, triphenylmethane triisocyanate, 4,4'-diphenyl metadiisocyanate, hexamethylene diisocyanate, xylene diisocyanate, 4,4'-dicyclohexylmethane diisocyanate, and them There is a mixture of. Furthermore, isocyanate functional group-terminated prepolymers prepolymerized with polyol and excess polyisocyanate are also preferably used. The isocyanate functional group of the nuclear compound is
It may be as it is or may be stabilized. Examples of the stabilizer include phenols which are dissociated upon heating and are stabilized to the extent that an active isocyanate group is regenerated, ε-caprolactam, malonic acid diethyl ester, methyl ethyl ketosim, sodium bisulfite and imidazoles. Polyfunctional isocyanates are often added in the form of organic solvent solutions or water dispersions.

The present invention provides the use of a high melting point polyethylene emulsion as the polyethylene resin. Here, the high melting point polyethylene emulsion is a polyethylene wax emulsion having a melting point of 125 ° C. or higher and higher than the melting point of 100 ° C. of a general polyethylene wax. The selective use of the high melting point polyethylene emulsion as this polyethylene resin is to ensure the friction melting resistance and the anti-pill resistance which are the purpose of use.
Achieve more clearly.

The treatment liquid used in the present invention has a formulation of a polyethylene resin, particularly preferably 1 part of a high melting point polyethylene emulsion, and 0.2 to 0.2 parts by weight of a binder composed of an acrylic ester / methacrylic acid / butadiene copolymer latex. It is preferably 0.4 parts and 0.05 to 0.2 parts of polyfunctional isocyanate. The treatment liquid can be attached to the cloth by a method such as coating or spraying.
By foaming the treatment liquid and adhering it to the fibers, a low adhesion rate can be achieved, so that the energy and time required for drying can be greatly saved, and the entire treatment liquid can be used without waste.
Further, since there is a merit that unevenness due to migration can be prevented, it is particularly preferable from the viewpoint of productivity improvement, energy saving, etc. to apply the treatment liquid in the form of foam and apply it to one side of the fabric.

The deposition rate of the treatment liquid is preferably 5% or more,
More preferably, it is 10 to 25%. After the treatment liquid is attached to the cloth, it is dried at 100 ° C to 130 ° C, and a temperature close to 130 ° C is more preferable. Following the drying treatment, finish setting is performed at 150 ° C to 190 ° C for 30 to 60 seconds, and it is more preferable to perform treatment at 150 ° C to 160 ° C for 45 seconds.

A friction melting resistance evaluation method for confirming the effect of the present invention is performed by using a JIS L1056 B method (a method using a rotor type friction melting test machine) of a test piece mounting bar of 5 cm ×. A test piece of 7 cm was wound around, and the rotation speed of the wooden rotary member was 2800 r. p. m. (This is a strong condition), the test piece is operated, and the wooden rotating body is contact pressure rubbed, and the time required for the hole in the test piece is measured.
Those that did not have holes even after being treated for more than a second were considered to have abrasion resistance.

Regarding the anti-pill property, JIS L1
Using a 076 C method (appearance / retention type) tester, with the front side of the 10 cm × 10 cm test piece on the outside, place it on the 12.9 cm ² (2 in ² ) sample holder of the ART (appearance / retention tester) tester. Attach and rub 20 times with a 3KS friction plate with a pressing load of 1100 g. A circle of 10 cm ² is drawn in the center of the friction surface of the test piece (this is referred to as the load up method), and the pilling occurrence state in this part is shown in the judgment standard table of Table 1 (the pilling judgment standard photograph is J
(Applied to Photo 4 of IS L1076). When the result of the judgment is in the middle of the two classes, the method of connecting the two classes with a hyphen, such as L-N class, is used to indicate, and those of size L and above are considered to have anti-pill properties.

[0024]

[Table 1]

Hereinafter, the present invention will be described more specifically by way of examples.

[0026]

Example 1 Polyester 9 was used with a double-sided circular knitting machine 22G.
Polyester knitted fabric consisting of 0% / cotton has a three-step smooth knitting structure, polyester multifilament (150 denier / 48 filament) false twisted yarn on the surface part, polyester multifilament (150 denier / 48 filament) false twisted in the middle layer Thread and polyester 5
0% / cotton blended yarn (these are interwoven),
A knitted fabric having a basis weight of 488 g / m ² was prepared by using a mixed yarn of 50% polyester / cotton for the back layer. This knitted fabric was relaxed and refined in a bath at 98 ° C by a conventional method, and further 13
After dyeing in a bath of 0 ° C., finishing heat setting was performed with dry heat of 170 ° C. to 180 ° C. to obtain a knitted fabric having a basis weight of 299 g / m ² .

10% by weight of a high melting point polyethylene emulsion (25% of active ingredient), 2% by weight of a binder composed of an acrylic ester / methacrylic acid / butadiene copolymer latex, 1% by weight of a polyfunctional isocyanate, 1.5% by weight of a foaming agent and 85.5% by weight of water were mixed and stirred, and adhered on the surface of the polyester multifilament fiber at an adhesion rate of 15% by a foaming process of coating on one side.
A dry heat treatment at 0 ° C was performed. Then, heat treatment was performed at 150 ° C. to 160 ° C. for 45 seconds to obtain a synthetic fiber cloth. Table 2 shows the results of evaluation of the obtained cloth for abrasion resistance and pill resistance. The evaluation results showed extremely satisfactory results, and the obtained cloth was excellent in friction melting resistance and pill resistance.

[0028]

Example 2 A double-sided circular knitting machine 22G was used and polyester 8 was used.
A polyester knitted fabric consisting of 5% / cotton has a three-step smooth knitting structure, a polyester multifilament (150 denier / 48 filament) false twisting yarn on the surface part, and a polyester multifilament (150 denier / 48 filament) false twisting on the middle layer Thread and polyester 5
0% / cotton blended yarn (these are interwoven),
A knitted fabric having a basis weight of 495 g / m ² was prepared by using a mixed yarn of 50% polyester / cotton for the back layer. Others were processed with the same materials, conditions, and methods as in Example 1 to obtain a synthetic fiber cloth. Table 2 also shows the results of evaluating the obtained cloth for abrasion resistance and pill resistance. The evaluation results showed extremely satisfactory results, and the obtained cloth was excellent in friction melting resistance and pill resistance.

[0029]

[Example 3] Using a double-sided circular knitting machine 22G, polyester 8
Polyester knitted fabric consisting of 0% / cotton has a three-step smooth knitting structure, polyester multifilament (150 denier / 48 filament) false twisted yarn on the surface part, polyester multifilament (150 denier / 48 filament) false twisted in the middle layer Thread and polyester 5
0% / cotton blended yarn (these are interwoven),
A knitted fabric having a basis weight of 528 g / m ² was prepared by using a mixed yarn of 50% polyester / cotton for the back layer. Others were processed with the same materials, conditions, and methods as in Example 1 to obtain a synthetic fiber cloth. Table 2 also shows the results of the evaluation of the friction melting resistance and the anti-pill resistance of the obtained cloth. The evaluation results showed extremely satisfactory results, and the obtained cloth was excellent in friction melting resistance and pill resistance.

[0030]

[Embodiment 4] Polyester 8 using a double-sided circular knitting machine 22G
A polyester knitted fabric consisting of 5% / cotton has a three-step smooth knitting structure, a polyester multifilament (150 denier / 48 filament) false twisting yarn on the surface part, and a polyester multifilament (150 denier / 48 filament) false twisting on the middle layer Thread and polyester 5
0% / cotton blended yarn (these are interwoven),
Using a polyester multifilament (150 denier / 48 filament) false twist textured yarn for the back layer, fabric weight 4
A knitted fabric of 86 g / m ² was produced. Others were processed with the same materials, conditions, and methods as in Example 1 to obtain a synthetic fiber cloth. Table 2 also shows the results of the evaluation of the friction melting resistance and the anti-pill resistance of the obtained cloth. The evaluation results showed extremely satisfactory results, and the obtained cloth was excellent in friction melting resistance and pill resistance.

[Comparative Example 1] Using a double-sided circular knitting machine 22G, a polyester knitted fabric made of 92% polyester / cotton with a three-step smooth knitting structure was used to false twist a polyester multifilament (150 denier / 48 filament) on the surface portion. Polyester multifilament (15
0 denier / 48 filaments) false twisted yarn and 50% polyester / cotton blended yarn (these are interwoven), and backside layer 50% polyester / cotton blended yarn for a basis weight of 528 g / m 2. ^Two knitted fabrics were produced.
Others were processed with the same materials, conditions, and methods as in Example 1 to obtain a synthetic fiber cloth. Table 2 also shows the results of the evaluation of the friction melting resistance and the anti-pill resistance of the obtained cloth. As a result of the evaluation, the obtained cloth had insufficient resistance to frictional melting.

[Comparative Example 2] Using a double-sided circular knitting machine 22G, a polyester knitted fabric made of 85% polyester / cotton having a three-step smooth knitting structure, and a surface multi-filament (150 denier / 48 filaments) false twisting process Polyester multifilament (15
0 denier / 48 filaments) false twisted yarn and blended yarn consisting of 50% polyester / cotton (these are interwoven), and blended yarn consisting of 50% polyester / cotton for the back layer, basis weight 486 g / m ^Two knitted fabrics were produced.
Relax kneading this knitted fabric in a bath at 98 ° C by a conventional method,
After dyeing in a bath at 130 ° C, 170 ° C to 180 ° C.
Finish heat set with dry heat at ℃, and basis weight 299g / m
I got ² knitted fabrics.

Amino-modified silicone 1 was added to the knitted fabric thus obtained.
0% by weight, 2% by weight of a binder composed of an acrylic ester / methacrylic acid / butadiene copolymer latex, 1% by weight of a polyfunctional isocyanate, 1.5% by weight of a foaming agent, and 85.5% by weight of water were mixed and stirred. Then, it was adhered on the surface of the polyester multifilament fiber by the foaming process of one-side coating at an adhesion rate of 15%, and was subjected to a dry heat treatment at 130 ° C. Then, it heat-processed at 150 degreeC-160 degreeC for 45 seconds, and obtained the synthetic fiber cloth. Table 2 also shows the results of the evaluation of the abrasion resistance and the anti-pill resistance of the obtained cloth. The evaluation results were unsatisfactory and did not pass the anti-pill property.

[Comparative Example 3] Using a double-sided circular knitting machine 22G, a 100% polyester knitted fabric having a three-step smooth knitting structure, a polyester multifilament (150 denier / 48 filament) false twisted yarn on the front, middle and back layers Was used to produce a knitted fabric having a basis weight of 528 g / m ² . The other is
A fabric was obtained by processing with the same materials, conditions, and methods as in Example 1. Table 2 also shows the results of the evaluation of the friction melting resistance and the anti-pill resistance of the obtained cloth. As a result of the evaluation, the obtained cloth did not pass the friction melting resistance and was insufficient.

[0035]

[Table 2]

[0036]

INDUSTRIAL APPLICABILITY The present invention has an extremely sufficient friction melting resistance and pill resistance while maintaining the properties such as appropriate smoothness, friction property and shape retention property required for physical education clothing. A synthetic fiber cloth can be obtained, which is industrially excellent.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location D06M 13/395 15/693 // D06M 23/04 7199-3B D06M 21/04

Claims (6)

[Claims] 1. A multi-layer structure knitted fabric, the surface portion of which is composed of synthetic fibers, and at least one kind of fibers constituting either the middle layer or the back surface layer is cotton, and the total amount of cotton is 10
A synthetic fiber cloth, characterized in that it is used in such a proportion that it is contained in a weight percentage or more. 2. A surface part is composed of synthetic fibers, and at least one kind of fibers constituting either the middle layer or the back layer is composed of spun yarn containing 35% or more of cotton by weight of the spun yarn. The spun yarn is knitted in 2/3 or more of the total number of stitches in the layer, and when knitting the remaining 1/3 or less stitches, knitting is performed without using all needles on either the dial side or the cylinder side. Synthetic fiber cloth. 3. A knitted fabric having a multi-layer structure, the surface portion of which is composed of synthetic fibers, and at least one kind of fibers constituting either the middle layer or the back layer is cotton, and the cotton is 1
On the surface of the multilayer structure knitted used at a content of 0% by weight or more, a combination resin of a polyfunctional isocyanate and a binder composed of a polyethylene resin and an acrylic ester / methacrylic acid / butadiene copolymer latex is applied. The synthetic fiber cloth according to claim 1, wherein 4. The surface portion is composed of synthetic fibers, and at least one kind of fibers constituting either the middle layer or the back surface layer is composed of spun yarn containing 35% or more of cotton by weight of the spun yarn. The spun yarn is a knitted fabric in which 2/3 or more of the total number of stitches of the layer is knitted, and when knitting the remaining 1/3 or less stitches, all needles are not used on either the dial side or the cylinder side. The combination resin of a polyfunctional isocyanate and a binder comprising a polyethylene-based resin and an acrylic ester / methacrylic acid / butadiene copolymer latex is applied to the surface portion. 2 or and the synthetic fiber cloth according to claim 3. 5. The resin applied to the surface portion of which the surface portion is composed of synthetic fibers comprises a high melting point polyethylene emulsion and a binder composed of an acrylic ester / methacrylic acid / butadiene copolymer latex, and a polyfunctional isocyanate. The synthetic fiber cloth according to claim 3 or 4, wherein the composition is 6. The method for producing a synthetic fiber cloth according to claim 3, or 4 or 5, wherein a foaming method is carried out when the combination resin is applied or the resin composition is applied.