JPS6141375A - Production of artificial fur - Google Patents

Abstract

PURPOSE:To obtain an artificial fur, capable of being napped at a high density, having improved flexibility and nap fixing property, and satisfying the swaying property, by forming a high polymer resin layer on the surface of a fiber base fabric, and setting naps in the layer. CONSTITUTION:A high polymer elastomer layer (preferred example; polyurethane elastomer) is previously formed on the surface of a fiber base fabric forming ultrafine fibers having <=0.1 denier fineness, e.g. polyester based synthetic fibers, and bristles or downy hair or both are prepared by tapering preferably polyester short fibers needle punched on the base fabric to set the nap bundles mutually independent in the state of pierced in the base fabric. Thus, the aimed artificial fur, capable of setting naps at a density of the flocked nap layer as high as >=300g/m<2>, having improved fixing and swaying properties of the naps, and resembling natural fur is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for producing high-grade artificial fur that achieves napping with an excellent density of crows and also satisfies flexibility, napping fixation, and fluttering properties.

(Prior Art) It is well known that natural fur, such as mink fur, is prized for its touch, luster, and graceful texture.

Many attempts have been made to obtain such natural fur using synthetic fibers, but the results have been far from achieving natural fur, which has a complex and precise structure.

For example, JP-A-56-63057 and JP-A-57-1
．． No. 21643 has been proposed, but all of these methods merely produce a raised product, the flocking density is low, and the performance such as flexibility, hair pulling resistance, and fluttering properties are also poor. It was enough.

In the former method, a backing layer is applied on the back side after punching and flocking the nape, but since there is no polymer resin in the base fabric when the nape is transplanted, the flocking density of the nape is about 300 (]/ m2g, the base fabric will be destroyed and it will not be possible to hold the raised hair.Furthermore, the latter method uses tufting to transplant the hair, but there is a limit to the density of the raised hair, and furthermore, the raised structure created by this method has poor fluttering properties. There were drawbacks that were difficult to obtain.

(Problems to be Solved by the Invention) The present invention aims to provide high-quality artificial fur that has an extremely high density of raised hair, has good fluttering properties, and is excellent in resistance to hair pulling (hair retention). Furthermore, according to the present invention, the thickness of the base fabric can be reduced and the mesh size can be made smaller, so there is an advantage that the flexibility can be significantly improved.

(Means for Solving the Problems) (1) A method for producing artificial fur, which comprises forming a polymer resin layer on at least the surface of a base fabric and then planting raised naps.

(2) The method for producing artificial fur according to claim 1, wherein the polymer resin is an elastic polymer.

(3) The method for producing artificial fur according to claim 1, wherein the polymer resin is a water-soluble polymer.

The napped material of the present invention includes polyester fibers, polyamide fibers, polyacrylonitrile sag, acetate 1Ir11, etc., but polyethylene terephthalate, polybutylene terephthalate, polyhexamethylene terephthalate, which can be easily tapered with caustic soda, etc. , and modified ams thereof are suitable. Polybutylene terephthalate, nylon 66, and the like are preferable because of their excellent impact resilience. In particular, polybutylene terephthalate is preferable because when tapered with an alkali, it gives rise to a long taper. It is also preferable to use fibers with irregular cross-sections in order to achieve a strong animal hair-like feel. This fiber is particularly suitable for pricking hair.

If you want to taper the fibers with raised naps,
4-3892.2 or the method described in Japanese Patent Publication No. 50-40195 may be used.

Such raised hair generally consists of prickly hair and downy hair, but it may be composed of either one type of raised hair. In any case, it is preferable for the nape to be tapered from the viewpoint of touchability. In particular, tapered bristles have a greater effect on touch and appearance.

The ml constituting the base fabric may also be selected from the above materials. In addition to regular van and hollow fibers, various types of MTS structures can also be applied, such as mixed and composite fibers.In particular, sea-island composite fibers can be used to remove some of the components in post-processing, providing even more flexible artificial fur. It is possible.

The base fabric of the present invention is selected from the viewpoint of flexibility, consisting of fibers as fine as possible, particularly preferably 4111 fibers having a final diameter of 0.1 (L or less).

The base fabric of the present invention may be in any fabric form, such as a nonwoven fabric or a knitted fabric.

The artificial fur of the present invention can adopt a raised structure in which the raised hairs penetrate the i-cloth in the form of bundles by needle punching, and the raised bundles are flocked independently from each other. For this reason, the root part of the nap is easy to flutter, and by post-processing such as napping treatment or fluid processing, it exhibits the advantage that it is easy to achieve an excellent three-dimensional flutter. That is, each bundle of raised raised hair can be made to pierce (penetrate) the base fabric independently, and this raised raised structure favorably affects the effects of the present invention. According to such a flocked structure, by adjusting the density and distribution of the raised hairs, the entire raised hairs can easily lie down in the longitudinal direction,
Moreover, it is not difficult to form a hair-like structure with a flow parallel to the longitudinal direction and a wave similar to that of Hidemoto.

The present invention is characterized in that a polymer resin layer is previously provided on at least one side of the base fabric. This resin layer can be applied not only to the front surface but also to the back surface, and may also be impregnated into the base fabric.

The important point of the present invention is that the base fabric is fixed in advance with a polymer resin before flocking. Therefore, even if the resin is washed away during post-processing after flocking, it does not impede the effects of the present invention, and on the contrary, a product with excellent flexibility may be obtained.

In the present invention, the raised naps can preferably be planted on the base fabric by punching them.

In conventional base fabrics that do not include a polymer resin layer on the surface, the coarse weave of the base fabric is easily destroyed by punching, and at most 200%
+1/vn', even if the hair is transplanted without considering performance such as texture and appearance, it is only possible to achieve a flocking density of up to about 300 g/m'. If the flocking density is coarse, it is impossible to improve the disadvantage that the fabric is easily visible when the flocking occurs.In the present invention, by providing a polymer resin layer on at least the surface of the base fabric, the flocking density can be increased to 500 (]/ 7112
This is more than 700 (1/-), which is more than double the conventional hair density.The increased density of flocking greatly enhances the sense of luxury.However, this is the biggest bottleneck in artificial fur. This is because the piloerection density of downy hair is too small.
It didn't feel extremely artificial.

Here, it is necessary that the polymer resin is distributed unevenly on the surface of the base fabric. With such a distribution structure, the resin on the front and back surfaces may penetrate into the base fabric and be integrated in some parts.

The polymer resin layer of the present invention can be formed by first coating or transferring on at least one side of the base fabric before punching, or can be formed by laminating a polymer resin film. Furthermore, in the case of impregnation, it is sufficient that the polymer resin migrates to the surface portion during the drying process and is distributed unevenly on the surface portion.

When the polymer resin is present as a film on the surface of the base fabric, the gripping force of the nap and the morphological stability of the base fabric are greater. Such a film thickness is at least 1μ, preferably 5 to 50μ,
Particularly preferably, the thickness is selected from the range of 10 to 30 .mu.m from the viewpoint of flexibility in addition to the above-mentioned effects. Usually, in addition to the membrane layer, the resin is infiltrated into the fibers for the base fabric in a biased distribution on the surface.

This resin layer prevents the base fabric from being destroyed by punching, greatly improves the morphological stability of the base fabric, and can withstand a large amount of flocking density.

Such a polymer resin layer sufficiently withstands the impact during hair transplantation, and due to its elasticity, it expands when the needle enters and contracts after punching, and has the function of conveniently gripping the hair transplant.

The polymer resin layer on the back side of the base fabric is usually formed during backing in post-processing, but if necessary, it may be formed before punching. Even in this case, a backing step is necessary.

By adopting this method, the thickness of the base fabric can be reduced,
In addition, we were able to create a product that has sufficient morphological stability even with a small basis weight and is satisfactory in terms of strength, and is much more flexible than conventional napped fabrics. can be provided. In addition, due to the synergistic effect with backing in post-processing,
The piloerection is strongly fixed by the polymer resin on both sides, and hair removal can be significantly improved.

The polymer resin used in the present invention includes pastes, adhesives, etc. that are used in ordinary printing processes, such as water-soluble pastes such as sodium alginate, polyvinyl alcohol, carboxymethylcellulose, and starch, natural rubber, and synthetic rubber. In addition, elastomers such as urethane resins, acrylic resins, silicone resins, and fluorocarbon resins can be cited.

Among these, the latter elastomers, particularly polyurethane resins, have excellent elasticity and are therefore suitable for the present invention. Such resins include various polyether polyurethanes and polyester polyurethanes. Such resins include long chain diols (polyesters or polyethers), diisoacetates, and small chain extenders (glycols,
diamine, etc.).

In addition, the former water-soluble glue is easy to remove in post-processing,
This has the advantage that the base fabric becomes flexible.

The polymer resin layer is formed on the base fabric by methods such as direct coating, transfer, and lamination of polymer resin films.

Generally, the polyurethane resin used is one in which a solvent such as dimethylformamide/methyl ethyl ketone has a viscosity of about 5,000 to 15,000 cp and has a viscosity of about 5,000 to 15,000 cp.

After a polymeric resin layer is placed on the base fabric, generally embroidered hair and/or downy hair is layered on top of it, or conversely, on the side opposite to the polymeric resin layer. Fi layer, needle punch and hair transplant. In the latter case, compared to the former, the flocking efficiency is slightly lower (and the constituent fibers of the base fabric also tend to be raised).

For needle punching, only the first punching may be performed.

In this case, various forms and types of fur can be achieved by adjusting the amount of stacked naps, the depth of the needle, the shape of the base fabric, etc. For example, by punching the top of the needle shallowly and punching the valley deeply, the needle can be changed continuously to form a curved surface, or by fixing the curtain cloth to a bed board with a recess shaped like the bottom of a pot, multiple structures can be created. can form a fur covering.

After completing this hair transplantation process, the transplanted raised hair is treated in the conventional manner.

For example, they are temporarily fixed with a water-soluble glue such as polyvinyl alcohol, and the laminated surfaces are subjected to a napping treatment.

Thereafter, after removing the water-soluble glue, the back surface is shaved and appropriately smoothed, and the above-mentioned polymeric elastic material, preferably a two-component type polyurethane adhesive, is used as a backing agent for permanent fixation.

If necessary, alkali treatment is performed to remove some fiber components of the base fabric or napped.

This napped fabric is then subjected to a steam or relaxing treatment to give it a fluffy feel.

The steam treatment is performed using steam at 100° C. to 130° C. for about 10 seconds to 60 seconds. In addition, the processing conditions for the relaxation treatment are 60℃ to 130℃ and 2 to 30℃.
A treatment time of about 10 minutes is appropriate. In any case, when using a yarn-dyed product for the napped or base fabric, it is necessary to take into consideration the shedding of the dye, and it is preferable to apply a low temperature condition, for example, about 70 to 80°C. Furthermore, in order to further improve the ease with which the piloerection moves in the breeze, it is effective to thin the roots of the piloerection using a chemical treatment agent such as caustic soda.

(Example) Example 1 41 miscellaneous bundles made of 35 denier polybutylene terephthalate flattened cross section yarn with a length ratio of long sleeve to short axis of 2.8 to 1 were wrapped in paper and cut into 36 InI11.
The fibers were immersed in a 40% caustic soda aqueous solution at 105° C. and treated for 80 minutes to produce fibers with tapered ends of 28 threads. This was used as sashimi.

On the other hand, round-section polybutylene terephthalate fiber with single yarn fineness of 5 denier (number of crimps: 5/25111 m, crimp traces: 5
A fiber bundle wrapped in 201 nIll paper consisting of 201 nm (%) was tapered by the above method to create a fiber with a length of 16 nwn with tapered ends at both ends, which was used as downy hair.

11 stinging hair and downy hair! The fibers were thoroughly spread and mixed using air at a quantitative ratio of 50=5.50.

On the other hand, as a base fabric, I made a punch felt (-1100Q/W12) consisting of 15 3-denier sea-island fibers with the island component being polyester 0°1 denier and the sea component being polystyrene. P
VA) A 20% aqueous solution was coated to a thickness of 100μ and dried at 100°C.

On the PVA coating surface, prickly hair and downy hair, which had been spread and mixed, were laminated at a rate of 1300 g/vn'. This was punched using a felt if FPD-1 type #36 manufactured by Organ Gumi Co., Ltd. at a density of 380 punches/Ci.

As a comparative example, the same punch felt without PVA coating was laminated and punched under the same conditions as above.

The two types of punched products were each backed with a 25% aqueous solution of polyvinyl alcohol on the back side, and after drying,
It is laminated and one side is brushed. Thereafter, the polyvinyl alcohol was removed by drying at 50° C. and dried. After shearing the short hairs that penetrate the base fabric and come out on the back side, apply urethane 20
% DMF/MEK solution.

Next, after dissolving and removing the polystyrene in the clogging machine cloth in Triclean, the cloth speed was 50+a/min and the nozzle pressure was 1. 3 amaron 31ackB at 120℃/60 minutes using a jet dyeing machine under the conditions of OIq/a (
It was dyed with BLliq (disperse dye manufactured by Hoechst Co., Ltd.).

The artificial fur obtained in the example had a black mink-like fur, whereas the artificial fur in the comparative example lacked raised hair and was of poor quality with the base fabric visible.

The flocking density and punching form stability of the furs of Examples and Comparative Examples were evaluated. The results are shown in Table 1.

Table 1 Flock density Shape stability Example of appearance of raised hair 405 12x 16 Comparative example of uniform raised hair 160 23x 24 Uneven [Flocked density] in the table: 0/m2 Cut off prickly and downy hair from the root with clippers and measure the weight. It was measured.

[Shape stability]: vertical % x horizontal % Evaluation was made based on the vertical and horizontal elongation of the base fabric after punching.

The smaller the number, the better the shape stability.

(Effects of the Invention) The present invention provides a polymer resin layer with a small amount of base fabric (both on the surface), so that even in various processes such as raising, handling, and dyeing in post-processing, the base fabric is not raised, and the internal fibers are Because it does not draw out the hair, it is possible to stably provide high-quality hair that is free from surface turbulence, tangles of raised hair, and moles. Composed of high-density nape that has an excellent appearance and feel.
This made it possible to provide extremely flexible artificial fur.

According to the present invention, for example, even standing hair composed only of downy hair can be implanted at a high density, so that sagging defects can be significantly improved and extremely soft artificial fur can be provided.

The artificial fur of the present invention can be used not only as clothing materials such as half coats, long coats, mufflers, muffs, hats, and shawls, but also as covers for car seats, chairs, sofas, walls, interior decorations such as rugs, and decorative materials. Suitable for various uses.

Claims (3)

[Claims] (1) A method for producing artificial fur, which comprises forming a polymer resin layer on at least the surface of a base fabric and then planting raised naps. (2) The method for producing artificial fur according to claim 1, wherein the polymer resin is an elastic polymer. (3) The method for producing artificial fur according to claim 1, wherein the polymer resin is a water-soluble polymer.