JPH06235175A - Finishing of regenerated cellulosic fiber structure to stone-wash tone - Google Patents

Abstract

PURPOSE:To provide a finishing method to give a regenerated cellulosic fiber structure exhibiting stone-wash tone, having raised state of peach-skin tone free from scratch mark and giving characteristic soft feeling of regenerated cellulosic fiber to the skin. CONSTITUTION:A regenerated cellulosic fiber structure is bagged together with blocks having rough surface and harder than the fiber structure and the bagged fiber structure is subjected to crumpling treatment with washer in the presence of a cellulase processing liquid.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stonewash finish method for a regenerated cellulose-based fiber structure, and more specifically, a peach-skin-like napped state with no rub-shaped spots and a regenerated surface with a soft texture. The present invention relates to a stone wash finishing method for a cellulosic fiber structure.

[0002]

2. Description of the Related Art Heretofore, in order to give a feeling of washing and wearing of natural cotton to a fiber structure, hitting the fiber structure with a stone or a stick has been performed. In this way, by hitting the fabric with stones or sticks to give the fiber structure a feeling of being washed and worn, a wrinkle does not occur and a fiber structure with a very natural texture is obtained, but it can be washed. There is a problem that it is not possible to industrially mass-produce a fiber structure having a feeling of wearing and a worn-out feeling.

Therefore, conventionally, in order to industrially impart a feeling of being washed and worn to a fiber structure, a lump having a rough surface harder than a fiber structure such as pumice and a liquid such as water are used. The fiber structure is put into the housed washer, the fiber structure is rotated together with the agglomerate in the washer, the fiber structure is brought into contact with the agglomerate, and the fiber is processed by so-called stone washing. It has been performed to give a structure a feeling of being washed and worn.

Similarly, in order to industrially impart a feeling of being washed and worn to the fiber structure, after folding, the fiber structure is folded, and at several points of both ears thereof are thread-stitched, after so-called tacking. , Put this fiber structure in a washer or jet dyeing machine, and knead this fiber structure in the washer or jet dyeing machine in a liquid to give the fiber structure a feeling of washed natural cotton or worn-out feeling. Was also done.

[0005]

However, the former method of treating a fibrous structure with a lump by contacting it with a lump is disadvantageous in that rope-shaped wrinkles, rubbing-shaped spots are conspicuous, and sometimes tears occur. However, the latter method of rubbing with a washer or the like after raising the brush could not give a sufficient stone wash feeling.

The present invention has been made to solve the above-mentioned problems, and is a stone-washed regenerated cellulose having a peach-skin-like napped state with no rubbing-shaped spots and a soft texture peculiar to regenerated cellulose fibers. An object of the present invention is to provide a method for finishing a fiber-based structure.

[0007]

[Means for Solving the Problems] The above-mentioned object is to bag a regenerated cellulosic fiber structure and a lump having a rougher surface that is harder than this fiber structure, and knead with a washer using a cellulase enzyme treatment solution. It is achieved by a stonewash finishing method for a regenerated cellulosic fiber structure which is characterized by being processed into a cloth.

The present invention will be described in detail below.

The regenerated cellulosic fibers used in the present invention include, for example, cupra, rayon, polynosic, etc., but rayon is the most preferable from the viewpoint of the invention effect and utility value. The regenerated cellulosic fibers may be used alone or as a mixture by mixed spinning or interwoven knitting, and in the case of being mixed, it is desirable to contain the regenerated cellulosic fibers in an amount of 50% by weight or more. Further, the fibers to be mixed-spun and interwoven with the regenerated cellulose fibers are not particularly limited, and cellulose fibers such as cotton and hemp, and synthetic fibers such as polyester, polyamide and acrylic can be used. The fibrous structure means a woven or knitted product using the regenerated cellulose fiber.

The agglomerate used in the present invention may be any as long as it has a rougher surface that is harder than the above-mentioned regenerated cellulosic fibers. For example, a ceramic ball or a rubber ball containing a ceramic abrasive. , Pumice stone, golf ball, etc., but 1-10 μm in rubber material
A rubber ball containing a ceramic abrasive containing 2 to 50% by weight, preferably 5 to 30% by weight, of ceramic particles having a size of about 100 mm is preferable from the viewpoint of effectiveness. Further, in the case of a rubber ball containing a ceramic abrasive, it is preferable to use a rubber ball having a diameter of 1 to 5 cm. That is, if it is less than 1 cm, the effect of stone wash is small, and if it exceeds 5 cm, the rubbing feeling of the surface becomes non-uniform.

The lumps are packed together with the regenerated cellulosic fiber structure described above, and the weight of the cloth: lumps is preferably about 1: 0.1-2. The bag for packing is not particularly limited, and a net made of polyester, nylon, hemp, or the like can be used.

The cellulase enzymes used in the present invention include cellulase A3 (commercially available from Amano Pharmaceutical Co., bacterium Aspergillus), cellulase T-AP4 (commercially available from Amano Pharmaceutical Co., bacterium Trichoderma), and macerase (Meiji Seikasha). Commercially available product, Trichoderma spp., Cellulase XP-42
5 (Nagase industry commercial product, fungus Trichoderma genus), cell crust (Novo company commercial product, fungus Trichoderma genus), Entilon CM-10 (Rakuto Kasei Kogyo commercial product, fungus Trichoderma genus) are exemplified. . Such cellulase enzyme is usually prepared as an aqueous solution of 0.1 to 5.0%, and the pH is adjusted to 3 to 6 with acetic acid, acetate or the like to obtain a cellulase enzyme-treated solution.

The cellulase enzyme treatment solution is used to perform a kneading process with a washer. The treatment conditions of the washer are:
Rotation speed 10 to 50 rotations / minute, bath ratio 1:10 to 1:30,
The setting temperature is preferably 20 to 60 ° C. and the setting time is preferably 0.5 to 48 hours. If it is out of the range of the above treatment conditions, rubbing may occur, or the desired stonewash effect may not be obtained due to a decrease in enzyme activity.

The regenerated cellulosic fibers treated with the cellulase enzyme treatment solution are washed with hot water and, if necessary, caustic soda 0.
Immersion treatment is carried out for 5 to 30 minutes using an aqueous solution (40 to 60 ° C.) containing 1 to 0.3% and sodium thiosulfate 0.3 to 0.7%, followed by washing with water and drying with a tumbler dryer or the like.

[0015]

Since the present invention is configured as described above, when the regenerated cellulosic fiber structure is rubbed with a washer, a beating action and a rubbing raising action by a lump, a fluffing action by a cellulase enzyme, and a weight reduction action are performed. The softening effect by the synergistic effect is exerted synergistically, and it becomes possible to obtain a fiber structure having a peach-skin-like napped state without rubbing-shaped spots and a soft texture.

[0016]

EXAMPLES The present invention will now be described in more detail by way of examples, which should not be construed as limiting the invention thereto.

Example 1 A polyester / rayon (30/70) blended spun plain fabric (warp yarn # 60 single yarn, density 176 yarns / inch; weft yarn # 60 single yarn, density 88 yarns / inch) was pasted by a commonly known method. Pull out
Dyeing is performed, and then the plain fabric is applied with an aqueous solution containing 50 g / l of a cationic softening agent (manufactured by Yushisha Co., Ltd., Vicron 29) by a padding method, squeezed at a pickup rate of 70% by weight, and then dried. did.

This plain woven fabric and a rubber ball (5 cm) having a diameter of 3.8 cm containing 10% by weight of ceramic particles having a particle size of 1 μm.
100 g (0 g / piece) were packed in a polyester net so that the weight ratio of the plain weave and the rubber balls was 1: 0.83. The plain woven fabric and the rubber balls packed in the polyester net thus prepared were immersed in a 0.5% solution of Entilon CM-10 (cellulase enzyme manufactured by Rakuto Kasei Co., Ltd.) (PH5.0 using an acetate buffer), 30 revolutions / minute, bath ratio 1:
It was treated with a washer at a temperature of 50 ° C. for 2 hours at 20. After the cellulase enzyme treatment, it was washed with hot water, neutralized and washed with water. Then take out the plain fabric from the polyester net,
The product of Example 1 was obtained after drying with a tumbler dryer.

Comparative Example 1 A product of Comparative Example 1 was obtained by performing the same treatment as in Example 1 except that the rubber ball containing the ceramic abrasive was not used.

Comparative Example 2 The product of Comparative Example 2 was obtained by performing the same treatment as in Example 1 except that the cellulase enzyme was not used.

Comparative Example 3 A product of Comparative Example 3 was obtained by performing the same treatment as in Example 1 except that the rubber ball containing the ceramic abrasive and the cellulase enzyme were not used.

Comparative Example 4 The finished plain woven fabric used in Example 1 was raised by an emery raising machine wound with 100 mesh sandpaper, and then 30 revolutions / minute at a bath ratio of 1:20 and a temperature of 50.
The product was treated with a washer at 30 ° C. for 30 minutes and then tumbler dried to obtain a product of Comparative Example 4.

Table 1 shows the state of surface fluff, the uniformity of surface fluff, the appearance and the texture of the products obtained in Example 1 and Comparative Examples 1 to 4.

The evaluation method is as follows. (1) Condition of surface fluff and uniformity of surface fluff Observed by electron micrograph (2) Appearance Judged by visual observation by 10 professional inspectors (3) Feeling KES feeling measuring device of Kato Tech Co., Ltd. Using, B
The value (bending hardness) and 2HB value (hysteresis) were measured. The smaller the B value and the 2HB value are, the softer and more repulsive the texture is.

[0025]

[Table 1]

As is clear from Table 1, the product obtained in Example 1 has a high fluff density and has a short fluff, so that it has a peach-skin-like appearance, and it has a small degree of rubbing and a soft and repulsive wind. It turns out that this is the case.

[0027]

As described in detail above, according to the method of the present invention, a peach-skin-like napped state with no rubbing shape, and a stone wash having a repulsive feeling and a soft texture peculiar to regenerated cellulose fibers. It is possible to obtain a regenerated cellulosic fiber product having a tone. Its texture and appearance are completely new and are extremely useful for casual purposes.

Claims (1)

[Claims] 1. A regenerated cellulose-based fiber structure and a lump having a rough surface that is harder than this fiber structure are packed in a bag and subjected to a kneading process with a washer using a cellulase enzyme treatment solution. Stonewash finishing method for cellulosic fiber structure.