JPH05331785A - Method for burning out pile web - Google Patents

Abstract

PURPOSE:To enable the burning-out processing permitting to express sharp watermark patters by imparting an oxidizing agent to the raising-predetermined surface of the web having its produced state preliminarily not subjected to a raising treatment. CONSTITUTION:For example, a printing size containing an oxidizing agent such as sulfuric acid or ammonium sulfate is printed on the raising- predetermined surface of a woven or knitted fabric having its produced state still not subjected to a raising treatment, and subsequently heated to carbonize the printed part. After the carbonized part is removed, the non-carbonized parts are subjected to a raising treatment to realize the pile web-burning-out processing capable of forming sharp uneven patterns or watermark patterns without damaging the ground tissues.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for discharging a pile cloth by which the surface of the pile cloth is carbonized with a printing paste to form an uneven pattern or a watermark pattern.

[0002]

2. Description of the Related Art A discharge printing method such as opal processing is carried out by mixing acid-resistant fibers such as silk or synthetic fibers with fibrin-based fibers such as cotton and an oxidizing agent such as sulfuric acid or aluminum sulfate. The technique of printing with a printing paste and then heat treating to carbonize the fibrin-based fibers in the printed part and removing the carbonized part to reveal the desired watermark pattern has long been well known and widely used. .

Furthermore, with application to acetate fibers and diversification of mixed fibers, oxidizers and printing methods suitable for each fiber have been developed and put into practical use. (Japanese Patent Publication No. 48-27231, etc.) Further, these discharge printing methods are not limited to fabric products such as non-woven fabrics and knitted fabrics obtained by simply mixing fibrin-based fibers and acid-resistant fibers. % It is also applied to pile products that use fibrous fibers alone, such as giving uneven patterns to towelettes and bathrobes.

[0004]

However, in these conventional discharge printing methods, when a pile cloth is targeted, the printing paste is prepared by mixing the pile cloth with an oxidizer in a state of being raised or sheared in advance. Is printed, carbonized, and then napped and sheared again in the final step.There are many processing steps and it is necessary to repeat the same steps, and in addition, a printing paste is printed on the napped surface in advance. Since the printing is performed, it is difficult to evenly permeate the printing paste and control the amount thereof, and the resulting watermark pattern or uneven pattern tends to be unclear. In particular, when a pile cloth that does not use any acid resistant fibers such as 100% cotton products is subjected to a discharge treatment, the printing paste is controlled so that the constituent fibers of the pile cloth can be carbonized at a certain depth. While printing,
It is necessary to prevent the printing paste from reaching the ground structure, but the above control is difficult, and in many cases the printing paste reaches the ground structure, causing embrittlement of the ground structure, and conversely printing. There is a problem such that the penetration of the glue is insufficient and the pattern becomes unclear.

It is an object of the present invention to provide a new and excellent method of corrosion processing for solving such a problem.

[0006]

In order to achieve the above-mentioned object, the present invention is a method for discharging a pile fabric which is a mixture of fibrous fibers or fibrous fibers. A pile fabric characterized by printing on the surface with a printing paste containing an oxidizing agent, then heat treating to carbonize the printed part, removing the carbonized part, and then raising the non-carbonized part. The outline of the method is as follows.

The present invention will be described in more detail below. As the pile fabric used in the present invention, a fabric in which fibrin-based fibers such as cotton and rayon are used alone, or a mixed spinning of the fibrous-based fibers and synthetic fibers such as polyester-based fibers, acrylic-based fibers and nylon fibers , A fabric obtained by any mixed mode such as mixed fiber, mixed twist, etc., for example, a towelette,
Any commonly used pile cloth such as a towel cloth such as a bathrobe and a bath towel, a knitted fabric for a polo shirt, an outwear such as a blouson, and the like can be used.

In the discharge processing method of the present invention, the pile fabric in the as-knitted or woven-up state that has not been raised or sheared is finally subjected to a raising treatment. A printing paste containing an oxidizer is printed on the part. The printing paste containing an oxidizing agent may be one used for general discharge processing, and for example, ferrous sulfate, acidic sodium sulfate, aluminum sulfate or the like is used as an oxidizing agent, and an auxiliary agent such as a penetrant is added to this. A printing paste obtained by mixing a sizing agent such as acid-resistant natural rubber or the like, water, or the like can be used.

As the textile printing apparatus used for the discharge processing of the present invention, a commonly used textile printing machine such as a roller textile printing machine or a screen textile printing machine can be used as it is. The printing of the printing paste on the pile fabric may be performed by a commonly used printing method such as roller printing or screen printing.

Generally, in the case of 100% cotton pile fabric, proper and delicate printing control of the printing paste is required in order to prevent the embrittlement site from reaching the ground structure. However, in the present invention, It is required to properly select the engraving depth of the roller and the mesh according to the pile length of the generation place, but it is possible to easily penetrate the printing paste even if the engraving depth of the roller is set to be shallow, (8-10) / 1
Engraving depth of the roller of about 00 mm is enough for the conventional (12
A patterned pile fabric having a sharpness equivalent to the engraving depth of a roller of ˜14) / 100 mm is obtained.

[0011] The printed pile fabric is then 100
Steam heat treatment is performed in a temperature range of up to 110 ° C. to carbonize the fibrin-based fibers at the portion where the printing paste containing the oxidizing agent is attached. The carbonized portion of the carbonized fibrous fiber is removed by rubbing and washing in water, raising treatment, or the like. After removing the carbonized portion, a bleaching process is performed, and if necessary, a dyeing process is performed. Then, after being dried, brushed and shaved,
The pile fabric has a watermark pattern.

In the above process, it is possible to employ dry heat treatment instead of steam heat treatment. In that case, it is preferable to set the treatment temperature to 20 to 30 ° C. higher. The bleaching process, the dyeing process, the drying process, the raising process, the shearing process, and the like may be any commonly used method, and are not particularly limited.

[0013]

EXAMPLES Examples of the present invention will be specifically described below together with comparative examples. A knitted fabric having a double-sided pile structure (pile length: 3 mm) knitted with a 18G double-russell knitting machine using 100% cotton yarn and 20/1 was used as a fabric and subjected to a printing treatment under the following conditions. Printing machine Roller printing machine Roll pattern Line pattern, flower pattern Engraving depth 8 / 100mm Printing paste Guar gum paste 50% (Original paste 20%) Sodium acid sulfate 20% Water 30% Processing process Printing (roller printing machine) → Pre-drying ( 100 ° C x 1 min) → Steam heat treatment (100 ° C x 5 min) → Neutralization (jet dyeing machine, alkali neutralization) → Bleaching process (jet dyeing machine) → Dyeing (jet dyeing machine)
→ Drying (120 ° C.) → Brushing → Shaving → Finishing The raised pile fabric thus obtained had a clear flower pattern even though the penetration of the printing paste was low. When the pile fabric of the same standard was processed by the conventional method using the same roller engraving depth and printing paste,
A flower pattern with poor color and pattern was obtained. When the engraving depth of the roller was set to 12/100 mm under the same conditions, the same sharpness as the flower pattern of the present invention was obtained. However, it was found that the printing paste partially penetrated into the ground structure.

[0014]

EFFECTS OF THE INVENTION In the method for removing pile fabrics according to the present invention, since the discharge treatment is carried out in the state of generation before raising, only the final step is required for raising the hair. The process can be greatly streamlined and the cost can be reduced. Moreover, since the discharge treatment is performed in the produced state, the printing paste can easily penetrate, and a sharp pattern can be formed with a relatively shallow penetration of the printing paste. In particular, in the discharging process for pile fabric using 100% cotton, if the penetration of the printing paste is deepened in the conventional discharging process, the ground structure is damaged, and conversely if the penetration is shallow, the pattern becomes unclear. However, delicate control of the penetration depth of the printing paste has been required, but in the discharge processing of the present invention, the penetration of the printing paste is good, so a sharp pattern pattern can be obtained even by applying the printing paste at a shallow depth. Since it is possible to form the structure, it is possible to obtain a large effect such that the ground structure is not damaged.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Wakui 2-7-10 Hiko-cho, Izumi-shi, Osaka Prefecture Tosen Co., Ltd. Issue Mitsubishi Rayon Co., Ltd. Product Development Laboratory

Claims (1)

[Claims] 1. A method for discharging a pile fabric, which comprises a mixture of fibrous fibers or fibrous fibers, wherein a pile fabric in a produced state is printed with a printing paste containing an oxidizing agent on a planned raising surface of the pile fabric, Next, a heat treatment is applied to carbonize the printed portion, the carbonized portion is removed, and then the non-carbonized portion is raised, so that the pile fabric is discharged.