JPH01321975A - Production of printed napped product of synthetic fiber - Google Patents

Abstract

PURPOSE:To obtain the title napped fabric of openwork design having a characteristic visual effects by printing the back of cloth face to be napped in napped synthetic fiber cloth with a printing sizing having specific viscosity, steaming, coloring napped fibers in a specific range in the case of napping, napping and shearing. CONSTITUTION:In napped cloth consisting of synthetic fibers, before cutting and napping, the back of cloth face to be cut and napped is printed with a printing sizing containing a colorant (dye, etc.) and having 1,500-8,000 viscosity, the cloth is steamed, cut and napped by a needle napping machine to produce napped fibers and further sheared to give printed napped fabric having shadow changing with angle of eye, characteristic visual effects and fastness to light and friction. When the cloth is printed, the napped fibers are colored in a zone from half length of the napped fibers to part cloth to the napped root of fibers to form characteristic openwork design. The napped fabric is suitable for seat cloth for automobiles.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for producing a printed synthetic fiber nap product,
In particular, the present invention relates to a method for manufacturing a raised tricot knitted product having a watermark pattern with good fastness to side light and abrasion resistance and suitable for automobile seat fabrics.

[Conventional technology]

Synthetic fiber raised products such as boa, seal, raschel, and high pile are expected to become more and more sophisticated, and require special coloring methods such as printing, and even high-quality watermark patterns and surface dyeing in different colors, rather than simply plain dyeing. has been done.

These high-quality products are generally made using textile printing technology. There were problems with this, such as the hair being disturbed by printing, and the watermark pattern not being able to express precise designs with good shape.

Furthermore, when synthetic fiber napping products are required to have high light fastness and abrasion fastness, such as when used for automobile seat fabrics, conventionally only specific dyes have been available, and the variety of colors has been limited.

[Problem to be solved by the invention]

An object of the present invention is to provide a method for producing a synthetic fiber napped product having a watermark pattern with a special visual effect, which does not cause quality deterioration such as hair disorder, has good light fastness and abrasion fastness, and has a special visual effect.

(Means for Solving the Problems) Instead of printing a napped product as in the past, the present inventor prints a dye-containing paste from the back side of the cloth before it is cut and napped, and prints only on the root side of the hair. The present invention was based on the discovery that by dyeing and then curling, it is possible to obtain a raised product that has a special dyeing effect, has no hair disturbance, and has good light fastness and abrasion fastness. completed.

That is, the present invention provides a synthetic fiber fabric that is cut and raised to produce a raised product, and that contains a coloring agent with a viscosity of 1 ml before being cut and raised.
A printing paste of 500 to 8000 cps is printed on the back side of the fabric to be cut and raised, then steam-treated, then cut and raised to create a nap, and optionally further separated and sheared, thereby essentially creating a nap fiber. This is a method for producing a synthetic fiber napped product in which the napped hair is colored in an area closer to the root of the napped hair than at the half-length position.

In the present invention, napped products refer to, for example, boa, seal, raschel, and high pile, which have napped mainly composed of polyester, polyamide, polyacrylonitrile, and modacrylic fibers. In the present invention, it is important that printing is carried out on the cloth before it is curled, and moreover, from the back side of the cloth.

In addition, it is preferable to stand the pile before printing, so that the printing paste penetrates uniformly from the back side, and it becomes easier to appropriately control the dyed height (from the root hairs) in the standing pile. .

The printing must be done on the back side of the cut and raised side, and the coloring agent must not reach the tip of the hair, but rather stays at a point less than half the fiber length from the root of the raised fibers. For this purpose, the printing paste must have a viscosity of 1500 to 8000 cps. At less than 15 oocps, it is difficult to properly apply the colorant, and the colorant tends to penetrate close to the tips of the hair. On the other hand, if it exceeds aooocps, the penetration will be insufficient and it will be difficult to achieve the desired uniform coloring. The viscosity can be adjusted using conventional sizing agents.

If necessary, penetrants such as anionic or nonionic surfactants can be incorporated into the printing paste to facilitate the penetration of the colorant.

The coloring agent is a conventional dye or pigment, and can be appropriately selected depending on the type of fiber.

After printing the printing paste, a steaming treatment is performed by a conventional method, with or without drying. For example, polyester fibers are steamed at 160'C for 20 minutes.

Thereafter, it is usually washed with hot water or water containing a surfactant and dried.

In the present invention, after printing as described above, the fabric is cut and raised. For cutting and raising, a raising machine commonly used in the production of raised products can be used. After raising the nap, it is usually preferable to separate it and further shear it using a shearing machine to even out the nap. Thereafter, further finishing, for example softening, can be carried out.

Note that Japanese Patent Publication No. 59-32586 describes a method in which water or a surfactant is applied to a napped product (already napped) in advance, and then a printing paste is printed from the back side of the napped product. This method, like the conventional methods, prints a napped product that has been napped in advance.

Therefore, hairs are likely to be disturbed during the printing process, and the shape and overall visual feel of the dyed product are significantly different from the products of the present invention.

〔Effect of the invention〕

According to the present invention, a raised product with a watermark pattern that has a unique visual effect rich in shading that changes depending on the viewing angle can be produced without disturbing the hair. This is a dyed product with extremely high fashionability, and the dyeing has high light fastness and abrasion fastness, making it particularly excellent as a material for automobile seats.

[Examples] The present invention will be further explained below with reference to Examples. Note that the percentages are by weight.

Polyester knitted with a tricot knitting machine (front yarn =
75/36-BOO, middle thread = 75/3B-3EO,
Back yarn-75/36-3EO) was prepared.

On the back side of this knitted fabric, a printing paste with the following composition was printed using a roller printing machine (150 g/m>.The printing pattern was 1
It is mesh style with cm pitch.

-〇- Printing paste Dianix Yellow t (2G-P O,
256% DianlX Red 3BL-P
O, 156%DianiX
Blue KR-P O,088%[)iani
x [)Y (reduction inhibitor) 0.1% (trademark, Mitsubishi Chemical Industries, Ltd.) Fine Gumt 1813L
(7%) 40% (trademark, sizing agent, Dai-T Gyo Seiyaku Co., Ltd.) SUNRESIST AL-15% (trademark, NICCA CHEMICAL CO., LTD.) Acetic acid (90%) f) Adjust to H4-5.5 Water Residual viscosity up to 100%: 4000 cps Next, the sample was washed with a reducing washing solution having the following composition at 80'C for 20 minutes, thoroughly washed with toothpick and water, and then dehydrated by centrifugation and dried.

Washing bath Amylazine D (trademark, non-ionic activator, Daiichi Kogyo Seiyaku Co., Ltd.) 1 g/ρ Sodium hydrolylphite 1 g/9 Sodium carbonate 13/ρ Next, the cloth was cut and raised with a wire raising machine, and after being handled. Shearing was performed to obtain a polyester velor with a pile length of 5 m.

This product had a fashionable shading pattern that changed depending on the viewing angle, and there were no hand holes. The light fastness (83°C, 300 hours) and rubbing fastness were as follows. For comparison, data for conventional printing from the front side of cloth is also shown.

Claims (1)

[Scope of Claims] 1. Synthetic fiber fabric that is cut and raised to produce a raised product, containing a coloring agent with a viscosity of 1500 to 800 prior to cutting and raising.
0 cps printing paste is printed on the back side of the fabric to be cut and raised, then steamed, then cut and raised to create a nap, and optionally further separated and sheared to substantially increase the length of the nap. A method for producing a synthetic fiber napped product in which the napped hair is colored in an area closer to the root of the napped hair than at a half-way point. 2. The method according to claim 1, wherein the synthetic fiber napped product is a tricot knitted napped product for automobile seats.