JPH06207386A - Method for forming pattern in fabric - Google Patents

Abstract

PURPOSE:To obtain a method for forming a pattern having a difference of light and shade in dyeing degree according to a desired design made by a designer, etc., in a fabric in high yield. CONSTITUTION:A dyed fabric is partially irradiated with light emitted from a low-pressure mercury lamp and faded to form a pattern having a difference of light and shade in dyeing degree between an irradiated part and an unirradiated part. The light emitted from the low-pressure mercury lamp has energy of light at a shorter wavelength than 253.7nm accounting for >=85% of the total irradiation energy, i.e., preferably contains ultraviolet rays at a shorter wavelength than <= about 250nm.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of forming a pattern on a cloth, and more particularly to a method of forming a pattern having a difference in shade in dyeing.

[0002]

2. Description of the Related Art In order to enhance the fashionability of outer garments,
Various innovations have been made. As a method of drawing a pattern,
Conventionally, print printing is generally used, but a simpler method is required for the same color pattern.

In addition, recently, it seems that it is worn out,
With the need for a retro look, once the thread or fabric has been dyed, the color is removed with a chemical solution, so-called strike
A method of partially decolorizing by a physical method such as sewage and sand eel has been adopted, and so-called uneven dyeing fabric obtained by such a method has become popular with consumers.

[0004]

However, with these conventional methods, it is difficult to generate unevenness in the intended state, and low yield is a problem. In other words, the fact is that it is impossible to efficiently carry out uneven dyeing, which is popular with consumers, as designed by the designer.

In view of the above-mentioned conventional circumstances, the present invention provides a cloth according to a desired design by a designer or the like.
Moreover, it is an object of the present invention to provide a method for providing a pattern with a high degree of yield and a difference in the degree of dyeing.

[0006]

Means for Solving the Problems The inventors of the present invention have made earnest studies to achieve the above-mentioned object, and as a result, on a cloth dyed in an arbitrary color, a light-blocking material was used as designed. When a light shield consisting of shaped objects and tangible objects is installed and the light emitted from the low-pressure mercury lamp is radiated from above, only the light-irradiated part fades, and the irradiated and unirradiated parts. It was found that a pattern pattern with a clear difference in the degree of dyeing can be obtained by and, and the present invention was completed.

That is, the present invention provides a dyed fabric,
By partially irradiating light emitted from a low-pressure mercury lamp to cause color fading, a method of applying a pattern pattern to a cloth characterized by providing a pattern pattern with a difference in shade between an irradiated part and an unirradiated part However, in this method, as the light emitted from the low-pressure mercury lamp, the energy of light having a wavelength shorter than 253.7 nm occupies 85% or more of the total irradiation energy, and the light emitted from the low-pressure mercury lamp is partially used. A configuration using a blocking object having a function of blocking light for the purpose of irradiating selectively is a particularly preferable mode.

[0008]

The fabric of the present invention may be of any type, for example, natural fibers such as cotton, wool, silk, hemp, and camels, and chemical fibers such as rayon and acetate. Cloths such as woven fabrics, knitted fabrics and non-woven fabrics, which are woven by single or mixed spinning of various synthetic fibers such as polyester, polyamide, polyacrylonitrile and aromatic polyamide are all used.

In the present invention, for the above cloth,
First, arbitrary dyeing is performed. Dyeing may be carried out in the usual manner after pretreatment such as usual desizing and scouring by a conventionally known method, and the posttreatment after dyeing is not different from the conventional method. Further, the dye used is also a direct dye, an acid dye, a basic dye, a mordant dye, an acid mordant dye, a metal-containing complex salt dye, depending on the kind of fibers constituting the cloth.
All known compounds such as sulfur dyes, naphthol dyes, disperse dyes, reactive dyes, cationic dyes, vat dyes and fluorescent dyes can be used.

Next, a low-pressure mercury lamp is used for the cloth thus dyed, and the light emitted from the mercury lamp is heated for several seconds to several tens of minutes under normal pressure and room temperature, preferably 20 seconds. Irradiate partially for 10 minutes.

The light emitted from the low-pressure mercury lamp is 253.
It is preferable that the energy of light having a wavelength shorter than 7 nm occupies 85% or more of the total irradiation energy, that is, the energy of ultraviolet rays having a short wavelength of about 250 nm or less is contained at a high density.

Various means can be adopted as means for partially irradiating light, but it is preferable to use a shield having a function of shielding light. For example, materials such as paper, fiber cloth, plastic, (synthetic) leather, and metal that have the function of blocking light can be engraved according to the desired design, and tangible objects such as leaves and shells Used as a barrier of the, and placed on the dyed fabric,
A method of irradiating light from above is preferably adopted.

When irradiated in this way, the dye in the light-irradiated portion is oxidatively decomposed by light energy and is discolored, and it appears that the dye is discharged in a lighter color or white than in the non-irradiated portion. A different pattern can be obtained according to a desired design according to the shapes of the sculpture or the tangible object.

Since light emitted from other light sources such as sunlight (natural light), high-pressure mercury lamp, carbon arc lamp, and xenon arc lamp has small energy, decomposition of the dye,
Irradiation for a long time is required before fading, and if a clear difference in light and shade is to be produced, a dye having extremely poor light resistance must be used, resulting in poor commercial value.

On the other hand, according to the light emitted from the low-pressure mercury lamp, that is, the light containing a high density of ultraviolet rays having a short wavelength of about 250 nm or less as in the present invention, the dye is easily produced by the high light energy. It exhibits a unique action and effect in that it is decomposed and discolored, and this decomposition and discoloration are achieved by irradiation for a short time.

[0016]

As described above, in the present invention, the dyed fabric is partially irradiated with the light emitted from the low-pressure mercury lamp to cause the dye in the irradiated part to fade, so that It is possible to apply a pattern pattern with a difference in the degree of dyeing to the unirradiated part as designed and with a high yield.

Further, according to this method, it is possible to arbitrarily adjust the shade difference by controlling the irradiation time.
It is possible to provide a pattern with a very high value industrially as a method of adding a patterned pattern to fabric by making it sticky and the pattern is raised like print printing, or making it possible to make it a stone-wash tone with a slight difference in shade. .

[0018]

EXAMPLES Next, the present invention will be described more specifically by way of examples.

Example 1 A plain weave of rayon fibers was scoured by a conventional method, dyed by a dip dyeing method under the following dyeing conditions, and then washed with water and a fixing agent (using Kayafixx CD manufactured by Nippon Kayaku Co., Ltd.).
After the treatment, it was dried to obtain a dyed cloth. <Dyeing conditions> Bath ratio = 1: 15 Temperature: 90 ° C. Time: 30 minutes Dyeing bath: Direct dye (CIDirect Red 243) 1% by weight to fiber: Glauber's salt 5 g / liter

Next, a ball paper having a thickness of 1 mm in which a large number of circles were cut out was placed on the upper surface of the dyed cloth, and a low pressure mercury lamp (SUV-110US manufactured by Sen Special Light Source Co., Ltd.) was used. The emitted light was irradiated under the conditions of an irradiation distance of 30 mm and an irradiation time of 5 minutes. By this irradiation, the hollowed-out circle part, that is, the part irradiated with light became lighter in color than the other parts, and a beautiful polka dot pattern was obtained.

Comparative Example 1 Instead of the low-pressure mercury lamp, a high-pressure mercury lamp [a high-pressure mercury lamp equipped with a hot-wire cutting device (H2800 manufactured by Toshiba Lighting & Technology Co., Ltd. was used.
L / 2], the light emitted from the
Example 1 except that irradiation was performed under the conditions of 0 mm and irradiation time of 5 minutes
In the same manner as above, an attempt was made to perform light irradiation treatment on the dyed cloth, but no polka dot pattern was obtained.

Comparative Example 2 A light irradiation treatment was attempted on a dyed cloth in the same manner as in Comparative Example 1 except that the irradiation condition of light from the high pressure mercury lamp was changed to an irradiation distance of 30 mm and an irradiation time of 120 minutes. As a result, although some fading of the dye in the irradiated area was observed, no sticky pattern was observed, and the strength of the dyed fabric was significantly reduced.

Example 2 A plain weave of cotton fibers was scoured by a conventional method, dyed by the dip dyeing method under the following dyeing conditions, then washed with water and dried to obtain a dyed cloth. <Dyeing conditions> Bath ratio = 1: 20 Temperature: 60 ° C. Time: 60 minutes Dyeing bath: Reactive dye (Remazol Brilliant Green 6B) 0.5 wt% to fiber: Glauber's salt 50 g / Little soda ash 15 g / Little

Next, on the upper surface of this dyed cloth, an aluminum plate having a thickness of 3 mm, in which a number of concentric spiral thin lines were hollowed out, was placed, and irradiation was performed with the low pressure mercury lamp used in Example 1 at an irradiation distance of 30 mm. The light was irradiated under the condition of time of 3 minutes. By this irradiation, the hollowed-out portion, that is, the portion irradiated with light, became lighter in color than the other portions, and the boundary was slightly blurred, which provided high fashionability.

Example 3 A mixed woven fabric of cotton and rayon was scoured and dried by a conventional method,
Dyeing under the dyeing conditions of Example 2, then washing with water and drying,
A dyed cloth was obtained. On this dyed cloth, actual poplar leaves were placed at appropriate intervals, and the low pressure mercury lamp used in Example 1
Light was irradiated under the conditions of an irradiation distance of 30 mm and an irradiation time of 5 minutes. By this irradiation, the part where the leaves are placed becomes dark as it is, and the part where the light is irradiated becomes light-colored. At that time, a slight color difference between cotton and rayon is added, and it becomes a very fashionable fabric.

Example 4 A woven fabric (twill) of different fineness composed of nylon and polyester fibers, called new synthetic fiber, was scoured by a conventional method,
It was pre-set and dyed under the following dyeing conditions to obtain a dyed cloth. <Dyeing conditions> Bath ratio = 1: 20 Temperature: 120 ° C. Time: 40 minutes Dyeing bath: Disperse dye (CIDisperse Blue 73) 1% by weight to fiber: Acetic acid 0.5 g / Little Dispersing and leveling agent (Nitsukasan Salt RM340) 1 g / Little

Next, on this dyed cloth, a polyvinyl chloride film having a thickness of 0.5 mm having a number of cuts having a width of 0.5 mm and a length of about 5 mm was placed, and the low pressure mercury lamp used in Example 1 was used. , Irradiation distance 30mm, irradiation time 3 minutes,
It was irradiated with light. Then, it was reduced and washed at 80 ° C. for 20 minutes, dried, and lightly brushed with an emery paper. The dyed cloth treated in this way becomes lighter in the area irradiated with light through the notches, and in combination with the fading of the dye due to the difference in the substrate, it becomes as if it were stone-washed. -The fabric has a Chiskin tone and has a very blurred surface, and has a very high surface texture.

Comparative Example 3 In the same manner as in Example 4 except that the high pressure mercury lamp used in Comparative Example 1 was used to irradiate light under the conditions of an irradiation distance of 30 mm and an irradiation time of 5 minutes instead of the low pressure mercury lamp. As a result, an attempt was made to perform light irradiation treatment on the dyed cloth and subsequent post-treatment. As a result, although the surface of the dyed cloth had a peach skin tone, only a pattern that could not be seen as a stone watch was obtained.

Claims (4)

[Claims] 1. A dyed fabric is partially irradiated with light emitted from a low-pressure mercury lamp to cause color fading, whereby a pattern having a difference in shade between the irradiated part and the unirradiated part is provided. A method to add a pattern to the characteristic fabric. 2. The light emitted from the low pressure mercury lamp is 25
The method for providing a pattern on a fabric according to claim 1, wherein the energy of light having a wavelength shorter than 3.7 nm occupies 85% or more of the total irradiation energy. 3. The method for applying a pattern to a fabric according to claim 1, wherein a shield having a function of blocking light is used to partially irradiate the light emitted from the low-pressure mercury lamp. 4. The fabric according to claim 1, wherein the fabric is woven from at least one fiber selected from natural fibers, chemical fibers and synthetic fibers. How to put on.