JPH06322666A - Production of regenerated cellulose fiber product having good handle - Google Patents

Abstract

PURPOSE:To obtain a fiber product excellent in appearance, having good handle and strong to abrasion by subjecting cloth made of a regenerated cellulose fiber to napping treatment and then, subjecting the treated cloth to cellulose crosslinking treatment. CONSTITUTION:Woven or knit fabric, nonwoven fabric, etc., consisting of regenerated cellulose fiber, preferably a regenerated cellulose fiber made by dry spinning and ready forming fine fluff is subjected to napping treatment with emery paper, etc., and then, subjected to crosslinking treatment using a cross- linking agent such as glyoxal, dimethylolethyleneurea, dimethylolurone, etc., to provide the objective napped fiber product suppressed in further fibrillation, covered with uniform and fine fluff, having good handle and being strong to abrasion utilizing regenerated cellulose fiber readily to fibrillate.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a method for producing a regenerated cellulose fiber product having a good texture. The present invention also relates to a method for producing a fiber product that utilizes the properties of regenerated cellulose fibers that are easily fibrillated. Further, the present invention relates to a method for producing a fiber product having a good texture by treating a regenerated cellulose fiber with a crosslinking agent that causes a crosslinking reaction with cellulose.

[0002]

BACKGROUND OF THE INVENTION As regenerated cellulose fibers, viscose fibers, polynosic fibers, cupra fibers, and recently developed solvent-spun tencel fibers are known, and these regenerated cellulose fibers are generally easily fibrillated. When it was used as scoop clothing, it became fibrillated, impairing its appearance and causing a decline in commercial value. A method of increasing the texture by using this fibrillation to increase the added value has been taken. Especially, in some cases such as TENCEL, fibrillation is used to enhance the texture and give a unique taste. . However, it was unavoidable that this product also became fibrillated due to rubbing during use, which deteriorated the texture and spoiled the appearance.

On the other hand, as a method of preventing this fibril formation, a method of applying resin processing to fix fibers is taken, and in this case, the processing resin is selected so as not to impair the flexibility of the fibers. , Care is taken to get good-textured textile products. Further, the fibers that are easily fibrillated are treated with an enzyme in advance to remove the fine fluff generated by the fibrillation before use.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a product having a good texture by using a regenerated cellulose fiber which is easily fibrillated. More specifically, it is an object of the present invention to provide a product having a uniform appearance with a feather-like appearance and a good texture by utilizing the property of fibrillation.
More specifically, it is an object of the present invention to provide a napped product having a good appearance and abrasion resistance, which does not impair the appearance and texture.

[0005]

A feature of the present invention is that a regenerated cellulose fiber product is nap treated to obtain a desired nap product, which is then treated with a cellulose cross-linking agent, and the surface is covered with fluff. A method for producing a fiber product having a good appearance and a good texture. Hereinafter, the present invention will be described in more detail.

As the regenerated cellulose fibers used in the present invention, various regenerated cellulose fibers are used. Using wood pulp as a raw material, obtain alkali cellulose, dissolve it using carbon disulfide, make a bismuth stock solution, spin it in an acid aqueous solution and solidify it, so-called wet spinning method rayon, polynosic fiber, alkali cellulose There are cupra fibers obtained by dissolving and dissolving in a copper ammonia solution and spinning, and Tencel (trade name) fibers obtained by dissolving wood pulp in an amine oxide solvent and performing dry spinning. However, the tencel fiber, which has high strength, particularly high wet strength, is excellent in dimensional stability when wet, is strong against alkali, and is easy to generate very fine fibrils, is the most preferable raw material fiber.

Various forms of fiber products are conceivable such as woven fabrics, knitted fabrics, and non-woven fabrics according to the purpose, but more woven fabrics and knitted fabrics are preferable. The kind of the woven fabric is not particularly limited, but a woven woven fabric having a good appearance can be obtained. As a method for raising the fibers, a generally known raising treatment is used. Specifically, either a method using sandpaper (emery paper) or wire raising may be used. However, in the case of using sandpaper, short hair raising is obtained and the operation is easy.

Examples of the cellulose cross-linking agent used include glyogizal, vinyl sulfone, paraaldehyde, dimethylol ethylene urea, dimethylol urone,
Various substances such as dimethylol propylene urea, dimethylol-4-methoxy-5,5-dimethyl propylene urea, and dimethylol dihitoroxy ethylene urea which react with cellulose to crosslink and bond are mentioned.

Using these cellulose cross-linking treatment agents,
Treating the regenerated cellulose fibers forms crosslinks between the cellulose molecules, which can prevent fibrillation. According to the present invention, when raised, fine feathers are generated due to fibrillation, and a product having a good appearance and a good texture has a subsequent fibrillation suppressed by the subsequent treatment with a cellulose crosslinking agent, and the obtained product is Fibrillation does not occur even if it is rubbed or rubbed by subsequent steps, such as cutting or sewing, and further using,
A good appearance and texture can be maintained for a long time.

[0010]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.

Examples 1 to 7 and Comparative Examples 1 to 4 Preparation of Test Cloth Various fibers raised using emery paper were dyed under the following conditions to give test cloths. Fiber cloth type;
Capra rayon cloth, viscose rayon cloth, polynosic rayon cloth and tencel cloth dyeing conditions

[0012]

[Table 1] Remazol Brilliant Blue R 2% o, w, f, Glauber's salt 50 g / l soda ash 20 g / l Bath ratio 1:20 Dyeing temperature, time 60 ° C. × 60 minutes For Example 6, after dyeing, Brushed.

The test cloth thus obtained was treated with the crosslinking agents shown in Table 1 to pick up, 1 dip, 1 nip, squeeze ratio 70%, intermediate drying 110 ° C. × 2 minutes, curing 15
It was treated at 0 ° C. for 3 minutes and used as an example. For comparison, without using a crosslinking treatment agent, a commonly known resin processing agent for fibers (non-crosslinking type) shown in Table 1 was also used, and in Comparative Example 1, curing was performed at 160 ° C. for 1 minute. For Comparative Examples 2 and 3, curing was performed at 110 ° C. for 2 minutes without intermediate drying, and the other processes were performed according to Example 1.

The abrasion resistance of the obtained treated cloth was evaluated. Incidentally, the judgment method was treated according to JIS L-0804, and the surface condition of the treated cloth was judged by comparison with untreated cloth using a gray scale. Similarly, the feeling was judged, and x was marked for extremely hard ones, Δ mark for slightly hard ones, and o mark for soft ones, and the results are shown in Table 2.

[0015]

[Table 2]

Betukamin is a product of Dainippon Ink and Chemicals, sol
Ussoft, Appretan and GL-5 are Hoechst products.

[0017]

[Table 3]

From the results shown in Table 2, when the nap-treated regenerated cellulose fiber cloth is treated with a crosslinking treatment agent, fibrillation can be effectively prevented without impairing the excellent feel of the fiber. It is understood that it is possible to provide a raised fabric that has an original texture and is not damaged by use.

[0019]

Industrial Applicability According to the present invention, it is possible to produce a regenerated cellulose fiber cloth having a uniform appearance covered with fine fluff and having a good abrasion resistance, and has a high industrial value.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kanji Shimizu, inventor Kanji Kurosaki 1-1, Hachimansai-ku, Kitakyushu City Mitsubishi Kasei Hoechst Co., Ltd. Technical Center

Claims (2)

[Claims] 1. A process for producing a regenerated cellulose product having a good texture, which comprises subjecting a regenerated cellulose fiber to a nap treatment and then treating it with a cellulose cross-linking treatment agent. 2. A process for producing a regenerated cellulose product having a good texture, which comprises subjecting a dry-spun regenerated cellulose fiber to a nap treatment and then a cellulose crosslinking treatment agent.