JPS62289602A - Leggings made of artificial leather - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] 3. Detailed Description of the Invention (Field of Industrial Application) The present invention is made of a stretchable leather-like material that has excellent fit, heat retention, and protection, and is also wearable. It also relates to shin guards and shin guards.

<Conventional technology> Traditionally, shin guards used for sports, etc. are made of hard leather and are made of cloth with metal pieces sewn into them, and are also used by workers in the forestry, agriculture, or construction industries. Shin guards, or so-called kyahan, are mainly made of cloth.

<Problems to be solved by the invention> Conventional shin guards made of leather or cloth are suitable for specific uses (1). If you wear cloth shin guards or hard leather shin guards for a long time, the feeling of constriction on your feet will increase, causing discomfort, repeated bending and stretching, or pain in your legs when you sneeze. Such improvements in wearability are necessary.Furthermore, shin guards are used not only for sports and work, but also as part of clothing, and there is a strong demand for materials that satisfy fashionability.

The object of the present invention is to provide a shin guard that is made of a material that is flexible and has great elasticity, has excellent fit, and has improved wearability. Furthermore, it is an object of the present invention to provide a shin guard that is fashionable, does not give an unpleasant feeling of tightness or fatigue even when used for a long period of time, and has good shape stability even when repeatedly bent.

Means for Solving the Problems> The present invention is a three-dimensional entangled nonwoven fabric comprising inelastic fine fibers and/or bundled fibers thereof in an elongation of 50 to 85N and elastic fibers in an amount of 50 to 15% by weight. One side of the three-dimensional entangled nonwoven fabric is a leather-like material having a suede-like surface made of raised fibers or a silver surface made of a polymer film mainly composed of an elastic polymer, and the apparent density of the leather-like material is 0.25. ~0.9 s y/ai
l, low elongation (in both directions, the elongation rate that does not cause structural destruction is at least 25%, and 30% after releasing the elongation state)
An artificial leather shin guard made of a stretchable leather-like material having an elastic recovery rate of at least 80% after seconds.

The stretchable leather-like material constituting the artificial leather shin guard of the present invention is made of multicomponent fibers obtained by spinning two types of polymers with different solubility (the cross-sectional shape of the m fibers is one type). A fiber with a sea-island structure or a multicore core-sheath structure, or a fiber with an alternating joint type split structure, in which the dispersion medium component is a polymer of is small (
For example, the component used as the inelastic fine fiber is a polyester containing an aromatic ring such as polyethylene terephthalate or polybutylene terephthalate, nylon-6, nylon-6,6, etc.
, polyamides such as nylon-6 and IO, polyolefins such as polyethylene and polypropylene, and acrylonitrile. Fibers made of polymers selected from polymers, polyvinyl chloride, etc. (referred to as multicomponent fibers)2゜The other type of multicomponent fibers are fibers made of elastic polymers and inelastic polymers, For example, the components used as the elastic fibers include at least one polymer diol selected from polyester diols, polyether diols, polyester ether diols, polylactone diols, and polycarbonate diols, an organic polyisocyanate, and two active hydrogen atoms. A polyurethane elastomer obtained by reacting with a unique low-molecular compound. A polyester elastomer obtained by condensing at least one of the above polymer diols, an aromatic dicarboxylic acid or an ester thereof, and optionally a low molecular weight diol. It is a polymer selected from acrylonitrile-butadiene copolymers, etc., and the fiber component to be removed is high-flow polyethylene, polystyrene, and non-elastic polymers selected from styrene copolymers, ethylene copolymers, polyvinyl chloride, etc. The short fibers of the two types of drawn fibers of the combined fibers (referred to as multi-component fibers) are mixed with inelastic fine fibers or / as the final entangled nonwoven fabric.
Then, 50 to 85% by weight of the bundled fibers and 50 to 15% by weight of the elastic fibers of the multicomponent d fibers I and 2 are blended. If the amount of mixed cotton of multi-component fiber (■) is increased, it will be difficult to obtain a product with high elasticity, so the amount of mixed cotton will be determined depending on the product design. In addition, in the case of a leather-like material with a silver surface, it is also effective to replace less than 50% of the multicomponent fiber with a single component ordinary fiber in order to make the texture firmer and fuller.

After blending the multicomponent fibers I and (1) or the normal fibers - make a web using the random univer method, cross-lapper method, or wet method, stack the webs to the desired product thickness, and then needle punch or / Then, three-dimensional entanglement of the a-fibers is performed using the fluid jet method. The weight of the three-dimensional entangled nonwoven fabric obtained by this entanglement may be thin for fashion purposes, but thick for protection etc., so the weight after entanglement is 150 to 2ooog/d. degree.

Next, in order to impart good elasticity to the three-dimensionally entangled nonwoven fabric, the removed component forming one of the phases constituting the fiber is added to the multicomponent fiber I, and the removed component that forms one of the fiber phases is added to the multicomponent fiber I. A process in which the inelastic polymer phases that make up the fibers are dissolved and decomposed and removed.

By combining the steps of shrinking the three-dimensionally entangled nonwoven fabric, inelastic fine fibers (t) and bundles (mm) are obtained from the multicomponent fibers (I), and elastic fibers are obtained from the multicomponent fibers (2). It will be done. The three-dimensional entangled nonwoven fabric obtained here exhibits stretchability. This stretchability is a stretchable entangled nonwoven fabric having an elongation rate of at least 25% that does not cause structural destruction when stretched in at least one direction, and an elastic recovery rate of at least 80% 30 seconds after the stretching state is released. becomes. This stretchable entangled nonwoven fabric is sliced to an appropriate thickness, or without slicing, the surface is puffed to form a raised fiber surface to give it a suede-like surface. Alternatively, a polymer coating layer is formed by making a polymer film mainly made of an elastic polymer in advance and adhering it, or by coating a polymer solution or dispersion to form a film, and finishing it with silver. A stretchable leather-like material is obtained by forming a surface. In order to give this leather-like material a more solid feel and stiffness, the three-dimensionally entangled nonwoven fabric may contain an elastic polymer within a range that does not impair its elasticity. The content is less than 35% by weight based on the weight of the stretchable entangled nonwoven fabric. The leather-like material may be subjected to heat pressing treatment, coloring treatment, rolling treatment, etc. as necessary. Depending on the application, the apparent density is 0.
It shall be in the range of 25 to 0.95 g/cIII.

The thickness of the leather-like material obtained here can be adjusted according to the intended use.
It is cut into shapes and sewn into artificial leather shin guards.

Embodiments Next, embodiments of the present invention will be specifically described with reference to Examples. Note that parts and percentages in the examples refer to Mfi unless otherwise specified.

Example 1 Seabird structure bicomponent fiber A (m degree 1 Odr) consisting of 60 parts of polyester polyurethane (island component) with polybutylene adipate as a soft segment (island component) and 40 parts of high-flow polyethylene (sea component) and 6-nylon 60 The sea-island structure bicomponent fiber B (fineness 6dr) consisting of 40 parts (island component) and 40 parts of high-flow polyethylene (sea component) was obtained by melt spinning, and the side yarns were further soaked in hot water at 70'C. So 2.5
Stretched twice, applied fiber oil, mechanically crimped, dried, cut into fibers of 51 m length to make stable, mixed with bicomponent fibers A and B at a ratio of 40/GO, carded, and clothed. A web having a basis weight of 900 g/d was formed by a wrapping method, and then needle punching was performed alternately on both sides using a needle with a needle size of $40 for a total of 560 P/CrI to produce an entangled nonwoven fabric. This non-woven fabric has a basis weight of 9401 and an apparent density of 1
It was so y/ad.

Next, the entangled nonwoven fabric was introduced into hot water at 98°C, subjected to shrinkage treatment (area shrinkage rate 51%), dried, the polyethylene component of the fibers was dissolved and removed with a solvent, and dried to form an ultrafine fiber bundle. A stretchable entangled nonwoven fabric I of shaped fibers was obtained. This entangled nonwoven fabric has a basis weight of 1150gA, apparent density of 0.401y, /ai
It is. This stretchable entangled nonwoven fabric is heated and pressed to a thickness of 2
．． 1 opening, puffing on both sides, finishing one side with a suede-like surface made of raised microfibers, dyeing with a metal complex dye, drying, plunging, and making a thickness of 2. Ormn (7) A stretchable leather-like material was made. The elastic recovery rate of this leather-like material at 30% elongation is 8 in the length direction.
5% and go% in the width direction, indicating good elasticity.

I made shin guards for Higashi men out of this stretchy leather-like material and wore them just in case. These shin guards have a moderate tightening force, and even after repeated use, the feet do not feel fatigued (I did not feel any discomfort when wearing them. There was no change in shape. Furthermore, even if they get dirty, they can be washed and used. It also had a suede leather-like appearance, making it highly fashionable.

Example 2 After slicing the stretchable nonwoven fabric of ultrafine fiber bundles obtained in Example 1 to a thickness of 1.41 mm, both sides were smoothed, and then one side of the entangled nonwoven fabric was coated with an average molecular 92,000 polytetramethylene ether glycol and average molecular weight 2
The solution viscosity of the polyurethane urea elastomer obtained by mixing 0θ0 polycaprolactone glycol in a 1:1 ratio and reacting the t-mixed diol, inphorone diisocyanate, inphorone diamine and hydrazine hittride is:
At a solution concentration of 25%, it is 273 poise/30°C.

A coloring agent is added to this polyurethane urea elastomer-7 to prepare a composition solution for a fission film.The composition solution is applied to a film thickness of about 30 mm on a release paper having a leather pattern, and after drying. A structured polyurethane composition liquid consisting of polyether diol, aromatic polyisocyanate, and polyamine was prepared and applied in an amount of about 70 y/d, and after evaporating most of the solvent, the entangled nonwoven fabric I was layered. After combining and curing, it was peeled off from the release paper to obtain a silver-covered leather-like material I.9 The elastic recovery rate of this material at 25% elongation was 88% in the length direction and 92% in the width direction, showing good elasticity. I feel sorry for the fact that it has a sexual nature.

This silver-finished leather-like material was processed to make shin guards for women's horse riding. These shin guards are flexible with a sense of fulfillment, but they have a binding force and are excellent in leaf fit, so you won't feel any discomfort when wearing them. Furthermore, it can be washed and used, withstands long-term use, and has good shape stability.

<Effects of the Invention> The shin guards of the present invention can freely set the thickness and the size of the elastic force, that is, the binding force, and have excellent fit and are comfortable to wear, even for long-term use. It has excellent morphological stability and durability, and is also aesthetically pleasing with a leather-like appearance.

Furthermore, it is washable.

Claims (5)

[Claims] (1) A three-dimensional entangled nonwoven fabric consisting of 50 to 85% by weight of inelastic fine fibers and/or bundled fibers thereof and 50 to 15% by weight of elastic fibers, one side of the three-dimensional entangled nonwoven fabric is made of fibers. A leather-like material with a suede-like surface made of raised naps or a silver surface made of a polymer film mainly composed of an elastic polymer, and the apparent density of the leather-like material is 0.25 to 0.95 g/cm^3, at least 1. It is characterized by being composed of a stretchable leather-like material having an elongation rate of at least 25% that does not cause structural destruction when stretched in the direction, and an elastic recovery rate of at least 80% 30 seconds after the elongation is released. Artificial leather shin guards. (2) At least one type of polymer is removed or split from a multicomponent fiber obtained by spinning at least two types of polymers with different solubility between the two types of fibers constituting the three-dimensionally entangled nonwoven fabric. The artificial leather shin guard according to claim 1, which is a fiber obtained by separating. (3) The artificial leather shin guard according to claim 1 or 2, wherein the elastic fiber is selected from polyurethane elastomer or polyester elastomer. (4) The inelastic fine fiber is made of polyester, polyamide,
The artificial leather shin guard according to any one of claims 1 to 3, which is made of at least one kind of polymer selected from polypropylene. (5) Stretchable leather-like material is 35% by weight based on the weight of the nonwoven fabric
The artificial leather shin guard according to any one of claims 1 to 4, which contains less than or equal to 10% of the elastic polymer.