JPS648754B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fiber structure having a napped pattern that is extremely durable and transparent. Conventionally, an embossing method has been used as a method for creating a three-dimensional pattern on a woven or knitted fabric having raised naps on its surface. That is, a heated uneven roll is used to push down the raised fluff that hits the convex portions and heat set it, but implementing this method requires engraving the roll, which, needless to say, causes problems in the process. Not only is it disadvantageous in terms of cost, heat-set concave areas have a hard texture and shine, and their extensibility is considerably lower than that of convex areas, so it is difficult to stretch embossed woven or knitted fabrics. It has noticeable defects in appearance and physical properties, such as the tendency to wrinkle. Furthermore, the three-dimensional pattern obtained by this method has a serious drawback in that it easily disappears due to friction or rubbing. Also, JP-A-54-20107 and JP-A-54-
Publication No. 117002 discloses that after a water-soluble polymer containing a disperse dye or the like is applied in a pattern to the raised surface of a raised knitted fabric, a polyurethane resin or the like is further applied thereon, and at the same time as the resin solidifies, a water-soluble polymer is applied. An invention is disclosed in which a polymer is removed and the surface is polished to scrape off the resin in the same area to obtain suede-like fake leather having a nap pattern. Although it is possible to obtain a durable pattern with these inventions, the appearance of the pattern is due to the difference in the orientation of the raised hairs, and is therefore not sufficient. As a result of intensive research to eliminate these defects, the present inventors discovered a fiber structure having a three-dimensional pattern that eliminates all of the aforementioned defects and has an exceptional effect.
The present invention has been completed and its purpose is to provide a fiber structure having a three-dimensional pattern that is excellent in feel, appearance, and physical properties and is extremely durable. The purpose of the present invention is to provide an easy and inexpensive manufacturing method. Further objects will become clear from the description below. The above-mentioned purpose is to apply a glue to the back side of a fiber structure having raised naps, and then print a non-aqueous curable binder containing 0.001 to 0.05% by weight of a black dye pigment in a pattern on the raised raised surface. , drying and heat treatment. In the present invention, the fiber structure having napping refers to the surface of knitted fabrics or non-woven fabrics made by knitting, mixing, knitting, etc. of filaments made of various natural fibers, synthetic fibers, and chemical fibers alone or in combination, and spun yarns. Brushed,
These include those that have raised fluff on the entire surface by puffing, sanding, etc., or those that have short fibers electrodeposited on the knitted fabric or nonwoven fabric. In short, any fabric such as the above-mentioned woven fabric or non-woven fabric may be used as long as it has napped surface on the surface of the base fabric. The fineness of the napped fibers is not particularly limited, but it should be 0.1 to 0.1, since the fibers have low bending rigidity and a large adhesive surface area.
A fine denier of 1.2 denier, especially about 0.3 to 1.0 denier, is preferable from the viewpoint of steric effect and robustness. Furthermore, the water-insoluble curable binder referred to in the present invention is a polymeric substance that finally forms an insoluble and infusible three-dimensional network structure by the action of heat, catalyst, etc., and one example thereof is a hydroxyl group. , epoxy group, methylol group, isocyanate group, carboxyl group, amino group, amide group, vinyl type, acrylic type, epoxy type, polyester type, polyamide type, urethane type, silicon type with reactive groups such as epoxy group, methylol group, isocyanate group, carboxyl group, amino group, amide group, polymerizable functional group , formaldehyde-based resins,
Rubbers are crosslinked by their own reactive groups,
Alternatively, it may be crosslinked with a crosslinking agent suitable for the reactive group contained in the above-mentioned substance, which is added as necessary. Among others, various modified acrylic acid ester copolymers having methylol groups and other reactive groups,
Polyfunctional isocyanate compounds whose reactive groups are blocked with active methylene compounds, bisulfites, etc., ester polymers into which hydrophilic groups such as sulfonate groups are introduced, and the like are preferred from the viewpoint of adhesiveness, texture, and ease of handling. In particular, when the latter two are applied to a napped product, the transparency is excellent and the color tone of the adhesive recesses becomes clear. and,
These binders are used as they are or in the form of a solvent solution, emulsion, latex, etc., depending on the type of binder. In addition, if necessary, crosslinking agents depending on the reactive groups introduced into the binder, such as melamine, ethylene, urea-based resins, subsalt oxides, sulfur, and other non-reactive polymers, etc. A catalyst, a PH regulator, etc. may be added. In the present invention, a black dye and pigment are added to color the binder portion. The black dye pigment is 0.001 to 0.05% by weight based on the solid content of the non-aqueous curable binder.
By adding a very small amount, a clearer and more transparent feeling can be obtained, and the color tones of the raised raised portions and the adhesive recessed portions become more stepped, resulting in a calm and dignified three-dimensional pattern. The present invention is a method of printing a water-insoluble curable binder in a pattern on the raised surface of a fiber structure and subjecting it to a fixing treatment. Stamps include gravure, screen, rotary,
It can be carried out by a method commonly used for printing and textile printing, such as using a roller. However, in order to obtain printing suitability according to each printing method, a solvent, a water-soluble paste, a synthetic paste such as an acrylic acid ester copolymer, etc., may be added to the binder as necessary. be able to. When printing, if the binder does not penetrate into the base fabric and stays on the surface layer, the texture becomes softer without impairing fastness. For this purpose, a base fabric whose back surface is entirely coated with starch material is used.
As the sizing agent, natural or synthetic sizing agents can be used, but water-soluble sizing agents are preferred because they can be easily removed by washing with water or hot water in the subsequent process. After printing, dry as necessary, but generally 80~
It takes about 1 to 10 minutes at 120°C. Thereafter, baking is performed using dry heat or steam heat. This usually has 110
It takes about 1 to 10 minutes at ~160℃. After this, unreacted substances and substances that easily fall off are washed and removed as necessary.
Finish by performing finishing treatment, drying, hair styling, etc. The fibrous structure obtained as described above has a part to which the binder is not applied and therefore has raised naps to form a convex part, and a part to which the binder is applied and the raised naps are mutually bonded by the binder. It is formed by adhering and fixing the part to the base fabric which can support the nap to form a concave part, and are arranged and complemented in a pattern. In this case, it is preferable that the binder does not penetrate into the interior of the base fabric that supports the nap, but instead adheres and fixes the nap on the back layer of the base fabric, since it has a soft texture without impairing the fastness. Therefore, the main effects of the present invention can be summarized as follows. (1) A highly durable three-dimensional pattern can be obtained by a simple method that does not cause fluffing of the bonded recesses or collapse of the outline even when the product is rubbed or rubbed during use, or washed, dry cleaned, etc. (2) The texture is soft even though a binder is added. (3) The binder-applied area has excellent transparency, and a step-down color tone can be easily obtained between the color tone of the raised area, and
A dignified three-dimensional pattern can be obtained. As described above, the present invention eliminates the deficiencies of conventional methods and makes it possible to obtain three-dimensional patterns of excellent quality using a simple method, and has extremely high industrial utility value. EXAMPLES The present invention will be specifically described below with reference to Examples, but the present invention is of course not limited to these Examples. In the examples, "parts" are "parts by weight"
shows. Example 1 A mixture of 100 parts of a water-soluble polyfunctional isocyanate compound and c part of carbon black was printed in a fine line floral pattern using a screen printing machine on a violet-dyed polyester knitted fabric with raised naps of a fineness of 0.7 d.
After drying at 100°C for 3 minutes, it was heated at 140°C for 3 minutes to adhere and fix the naps in the area to form a nape pattern.
On the other hand, an aqueous locust bean gum solution was applied to the back side of the knitted fabric so as to penetrate from the back side of the fabric to about the middle of the thickness of the knitted fabric, and then dried to form a raised pattern in the same manner. The locust bean gum was later removed from this product by washing with water. 500 by the Tokyo Institute of Technology rub resistance tester
The results of evaluating the retention of the raised pattern, texture, and color tone of the adhesive recesses after the first rubbing test were evaluated in the first test.
Shown in the table. 【table】

Claims (1)

[Claims] 1. After applying a glue to the back side of the fiber structure having raised hairs, apply black dye and pigment to the surface having raised hairs.
It is characterized by printing a non-aqueous curable binder containing 0.001 to 0.05% by weight in a pattern, drying, and heat-treating it, so that the part where the raised hair is fixed by the hardened binder and the raised part where the binder is not attached are separated. A method for manufacturing a fiber structure having a raised pattern arranged in a complementary pattern.