JPH01162881A - Dyeing of printed fabric - Google Patents

Abstract

PURPOSE: To provide a dyeing method for a printed fabric by which a sharp pattern having light and shade is drawn out by one-batch dyeing by printing a black body such as a carbon black on the surface of a fabric including a thermoplastic synthetic fiber, irradiating near infrared rays thereon to heat the printed portion by the black body and to shrink the portion, and dyeing the shrunk fabric. CONSTITUTION: A black body such as a carbon black, a graphite and a carbonized product is printed on a fabric including a thermoplastic synthetic resin such as a polyester fiber as a part thereof, and near infrared rays are irradiated on the printed fabric to heat the black body and to shrink the portion printed by the black body by the heat. The shrunk fabric is dyed by a conventional method to deeply dye the printed portion. By the method, a printed pattern having difference of light and shade can be drawn by a single-batch dyeing, and a relief pattern having sharp pattern edge is obtained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is applicable to interior materials such as chair fabrics, curtains, and wall fabrics;
'); 4 people Printing used for clothing fabrics and other clothing fabrics 4
This is related to I-paper.

[Conventional technology]

An embossing printing technique that imparts unevenness to a fabric and at the same time colors gates and convex portions is well known.

[Problem that the invention seeks to solve]

Conventionally known embossing printing generally involves pressing an embossing roll onto a transfer paper layered on a fabric to perform pressure-thermal transfer, but it is not possible to create deep and delicate uneven patterns, and the radiant heat from the heating embossing roll cannot be applied. Because the surrounding fibers shrink as a result of this, even if one attempts to simply form unevenness without using transfer paper, it is not possible to form a deep and fine uneven pattern with a groove width or interval of 0.5n or less.

[Purpose of the invention]

Therefore, the present invention is capable of forming a complex and delicate uneven pattern with sharp edges, or - creating a printing pattern with differences in shading by bath dyeing, or creating a grained printing pattern with differences in shading. The purpose is to

[Structure of the invention]

The present invention is in accordance with such an object, and involves printing carbon black, graphite, carbide, and other black body fine particles on the surface of a 4J fabric having thermoplastic synthetic fibers, and irradiating the black body with near-infrared rays to generate heat. The method is characterized in that the culm of the thermoplastic synthetic fiber is heated by near infrared rays through the black body, and then a dye liquid is applied to dye the printed area of the black body in a deep color. be.

Here, the present invention applies not only to ordinary woven fabrics, knitted fabrics, and non-woven fabrics, but also to
Applicable to fabrics in which thermoplastic synthetic fibers are used in at least some of the surface fibers, such as fuzzy artificial leather, raised fabrics, moquettes, and other pile fabrics, even if the surface fibers of the fabric are not all thermoplastic synthetic fibers. good.

Fish body fine particles do not necessarily need to be blended with a binder for printing; the powdered particles may be partially sprinkled onto the surface of the fabric and adhered thereto, and the printing method is not critical. When preparing and printing, either a water-soluble or water-insoluble organic solvent solution type binder may be used, and the binder may also contain a cationizing agent or the like that changes the dyeability.

The amount of adhesion to the horse's fabric is 0.1 of thermoplastic synthetic fibers.
It may be added in a very small amount, such as less than % by weight, which does not color the fibers black. In other words, the purpose of attaching or printing a black body in the present invention is not to color thermoplastic synthetic fibers.

In the present invention, near-infrared rays are applied to a fabric printed with a black body,
Near-infrared rays pass through the black body and heat it to such a high temperature that only a very limited portion of the synthetic fiber to which the black body is attached contracts. Patent application 1986-1 invented and filed by
42142 and Japanese Patent Application No. 62-46309.

In addition, to explain the outline of this prior art, infrared rays have a wide wavelength band from 0.72μ to 1000μ between visible light and microwaves, and depending on the wavelength band, the wavelength ranges from 0.72μ to 1.5μ. The infrared rays in the band are considered near infrared rays, and 1
．． Infrared rays in the wavelength band from 5μ to 5.6μ are classified as intermediate infrared rays, and infrared rays in the wavelength band from 5.6μ to 1000μ as far infrared rays.In the present invention, infrared rays in the wavelength band from 5.6μ to 1000μ are classified as far infrared rays. It is applied by irradiating the fabric with an infrared irradiation lamp that mainly emits near-infrared rays with a wavelength of up to 0.75μ (750mμ). Unit length (m) that emits near infrared rays with a wavelength of around 750w
) from a cylindrical near-infrared lamp with an output of approximately 2 kW per unit.
Move the cloth at close range from 0 to 70 at a speed of 3 to 7 m/min.
I'll give you one chance.

Incidentally, a black body generates heat to the extent that it thermally deforms thermoplastic synthetic fibers only when it is strongly irradiated with near-infrared rays from a close distance, but a black body generates heat to the extent that it thermally deforms thermoplastic synthetic fibers. Near-infrared rays do not generate heat and do not thermally deform thermoplastic synthetic fibers.

The dye solution after irradiation with near-infrared rays may be applied uniformly to the entire surface using a dip nip or spray, or may be applied partially using a textile printing machine if necessary, and the dye solution may be applied in preparation of the dye solution or in subsequent steps. Teaming, washing, etc. are carried out using conventional methods.

〔Effect of the invention〕

According to the present invention, the horse's body generates heat by absorbing near-infrared rays, which causes it to be heated to a high temperature and shrink, or the crystal structure of the fiber polymer changes due to the strong influence of near-infrared rays. Only the thermoplastic synthetic fiber to which the black body is attached develops a deep color during the subsequent dyeing process, and the fabric is dyed in different shades of light and shade according to the pattern printed with the black body. Depending on the degree of near-infrared irradiation, when the thermoplastic synthetic fiber is in the form of a pile, it shrinks and melts to form four parts on the pile surface, and the thermoplastic synthetic fiber forms a flat side fabric. When the fabric shrinks, it forms a textured pattern, and these concave and textured areas are dyed in different shadings during the subsequent dyeing process, making the pattern even more three-dimensional and vivid.

In addition, these uneven patterns and grained patterns are created along the imprint pattern of a black body, and the imprint pattern can be made infinitely fine, and there are fine black bodies of several microns in size. Only a very limited portion of the thermoplastic synthetic fiber can be heated and melted and shrunk, making it suitable for chair fabrics with sharp edges and uneven patterns that are dyed in complex and delicate shades. The industrial advantages of the present invention are great because fabrics that could not be obtained using conventional techniques, such as thin fabrics suitable for patterned curtains and clothing, can be obtained.

[Example 1] Fabric weight 120g/n? A printing paste prepared by blending 0.5 parts by weight of carbon black powder with 100 parts by weight of a water-soluble base paste (8% sodium alginate) was applied to a polyester fiber fabric in a coating amount (dry weight) of 15 g/-. Print and dry
A cylindrical near-infrared lamp with an output of about 2 kW per unit length (m), which emits near-infrared rays with a main wavelength of around 750 mμ, was illuminated at a close distance of 50 m at a speed of 7 m/min.

As a result, only the portion of the polyester fiber fabric to which the printing paste was adhered contracted by about 5%, and a grained pattern was formed along the printing pattern.

Next, this polyester fiber 4] fabric was prepared with a dye solution (3% o, t#) prepared as follows and adjusted to P, +4.5 with acetic acid.

f,), and dyed according to a conventional method.

As a result, the shrunken grained part is dyed several times (approximately 5 times) darker than the other parts, and in this way, four sheets with grains formed are obtained by dyeing along the printing outline. It was done.

Disperse dye Diamix Yellow G-FS (Mitsubishi Kasei side) 2% 0. Support, f Disperse dye Diamix Red FL-FS (Mitsubishi Kasei ■) 1% o, w, f Leveling agent Disper N-200 (Meisei Chemical #s>...
・・・・・・Ig/j! [Example 2] Pile weight: 150g/m, pile length: 3vn, pile material: 0.0% carbon black powder per 100 parts by weight of water-soluble base glue (8% sodium alginate) was added to the pile surface of 4 piles of polyester fibers. The printing paste prepared by blending 5 parts by weight was printed and dried at a coating amount (dry weight) of 2 s and i=, and the output per unit length (m) of emitting near-infrared rays with a main wavelength of around 750 mμ was approximately Fifty cranes were passed through a close distance from a 2 kW cylindrical near-infrared lamp at a speed of 4 m/min.

As a result, only the pile to which the printing paste had adhered was melted and shrunk, and an uneven pattern was formed on the pile surface.

Next, this polyester pile fabric was prepared as follows and dyed with acetic acid to give P, H, 5 (3.5% o, w).
, f,), and dyed according to a conventional method.

As a result, the melt-shrinked recesses were dyed several times (approximately 5 times) darker than the surrounding pile, and the previously formed uneven pattern was dyed in different shadings, giving it an attractive appearance.

1) k dye Sumikaron Red 5-BL
(Resident Chemistry■)・・・・・・・・・2.0%0. Tsuba, f
Disperse dye Terasil Yellow X-GFSW
(Ciba Geigy) 1.5% o,
w, f Leveling agent Disper N-200 (Meisei Chemical ■)
・・・・・・・・・1g/l Debetsuto Chuo Giken T-gyo Co., Ltd. Kawashima Textile Co., Ltd.

Claims (1)

[Claims] A black body such as carbon black, graphite, carbide, etc. is printed on the surface of a fabric containing thermoplastic synthetic fibers, and near-infrared rays are irradiated to generate heat in the black body. A dyeing method for a printed fabric, which is characterized by heating the printed fabric to the extent that it shrinks, and then applying a dye liquid to dye the printed area of the black body in a deep color.