JPH0724950A - Manufacture of dye-absorbing sheet and information fabric - Google Patents

Abstract

PURPOSE:To provide a fabric, on which a picture is formed and which is capable of being employed for a label and the like bonded to clothes and the like and prominent in resistance to washing and the like., simply. CONSTITUTION:A dye-absorbing sheet is provided with an adhesive layer or a temporary bonding layer on at least one side of a sheet-type material having dye absorbing property. A picture, such as a letter a picture, a discriminating mark and the like, is formed on a fabric temporarily by ink consisting of principal constituent of dye, then, the surface of the dye-absorbing sheet, which is provided with said adhesive layer or temporary bonding layer, is superposed on the picture forming surface of the fabric so that at least the whole of a picture forming part is covered and, thereafter, heating treatment is applied under the condition whereby the dye, forming the temporarily formed picture, is impregnated and diffused into filaments constituting the fabric to dye it and excessive dye is removed simultaneously. According to this method, a picture, produced by dying and prominent in fastness, such as resistance to friction, sublimation, washing and the like, can be formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dye absorbing sheet for removing an excess dye after forming an image on a cloth with an ink containing a dye as a main component, and a label or the like attached to clothes or the like. The present invention relates to a method for producing an information cloth, which can be easily used to provide a cloth on which an image having excellent wash resistance is formed.

[0002]

2. Description of the Related Art Conventionally, a transfer printing method using a dye has been known in order to obtain a cloth on which an image having good fastness such as rubbing and washing is formed. Further, as a method having flexibility and immediate printability, an inkjet dyeing method, a heat transfer dyeing method and the like are known.

[0003]

However, the transfer printing method is
Since it is necessary to prepare an original plate for each sheet, it is difficult to cope with other types of products in small quantities and to provide immediate printability. Further, in terms of process, heat after printing, dye fixing process by chemicals and excess dye,
There is a problem that it is difficult to easily obtain a fabric on which an image is formed, because a step of removing the paste material or the like is required.

Ink jet dyeing and thermal transfer dyeing methods have the convenience of flexibility and immediate printability, but dyes that form a temporary image by heat treatment, steam treatment, etc. are permeated and diffused inside the fabric for dyeing. There is a problem in that it is inconvenient because it has a step of removing the excess dye by reduction washing and the like. In particular, since the removal of excess dye is a wet process, there was a problem with the immediate availability of the imaged fabric.

On the other hand, the inventor of the present invention temporarily forms an image with a dye by an ink jet dyeing method or a heat transfer dyeing method, and then superimposes a dye-absorbing sheet material such as paper or a polymer film on the image forming surface of the cloth and heats it. Although a method of dyeing a dye by treating is proposed, this method removes excess dye to some extent, and although a fabric on which an image is formed can be easily obtained, it is possible to completely remove the fibers. It was found that the fastness to rubbing, sublimation, etc. was insufficient because the excess dye was difficult to remove.

The present invention was devised in view of the above-mentioned drawbacks of the prior art, and its purpose is to be used for a label or the like attached to clothes and the like, and toughness such as friction, sublimation and washing resistance. An object of the present invention is to simply provide a fabric on which an image having excellent properties is formed.

[0007]

The object of the present invention is as follows.
It is achieved by the following means. That is, the dye-absorbing sheet of the present invention is characterized by having an adhesive layer or a temporary adhesive layer on at least one surface of a sheet-like material having a dye-absorbing property, and the method for producing an information cloth of the present invention is , Characters on the cloth by ink mainly composed of dye,
After temporarily forming an image such as a picture or an identification mark, the surface of the dye-absorbing sheet having the adhesive layer or the temporary adhesive layer is overlaid on the image forming surface of the cloth so as to cover at least the entire image forming portion. By heating in that state, the dye forming the temporarily formed image is permeated and diffused into the fibers constituting the cloth to be dyed, and at the same time, the excess dye is removed. Is.

In the present invention, the dye-absorbing sheet is an ink-jet dyeing method, a thermal transfer dyeing method, or another dyeing method, in which an image is temporarily formed on a fabric, and after dyeing with heat or the like, it remains undyed. A sheet that absorbs and removes excess dye.

In the present invention, the information cloth means a cloth on which information such as characters, pictures, identification marks, etc., which a human or machine recognizes as meaningful is recorded.

The sheet material having dye absorbability used in the present invention is not particularly limited as long as it has a high affinity with the dye used and is easy to absorb the dye, such as paper, polymer film, woven fabric and non-woven fabric. The cloth, the open-celled porous sheet, and the porous sheet described later are used.
Paper is preferable from the viewpoint of dyeing efficiency, a polymer film is preferable from the viewpoint of adhesion to a cloth, and a porous sheet is preferable from the viewpoint of dyeing speed.

The thickness of the sheet material in the present invention is
Although not particularly limited, it is preferably 1 μm or more and 1 mm or less, and more preferably 10 μm or more and 500 μm or less. If it is less than 1 μm, the sheet is not stiff and the dye absorption amount is insufficient, and if it exceeds 1 mm, the heat conduction during color development is poor and the cost is increased, which is not preferable. As the porous substance used in the present invention, any substance having pores larger than dye molecules such as diatomaceous earth, zeolite, and silica gel can be used. A sheet obtained by forming these into a sheet is called a porous sheet.

The pressure-sensitive adhesive or adhesive used in the pressure-sensitive adhesive layer or temporary adhesive layer of the present invention is one that adheres to the image-formed cloth and is easily peeled off so that the cloth does not retain its adhesiveness or adhesiveness. It is preferably used, and those having such performance include polychloroprene-based, nitrile rubber-based, acrylic rubber-based, synthetic rubber-based such as styrene-butadiene copolymer rubber-based, recycled rubber-based, natural rubber-based, etc. Alternatively, mixed rubber-based adhesives or pressure-sensitive adhesives may be used, but the present invention is not limited thereto, and polyester-based, polyamide-based, acrylic-based pressure-sensitive adhesives or adhesives may be appropriately used depending on the cloth or dye used. You can

In the present invention, the adhesive layer or the temporary adhesive layer is
It is formed by spraying or the like, wet coating such as bar coating or kiss coating, and dry lamination of sheet adhesive. The thickness of the adhesive layer or the temporary adhesive layer is not particularly limited, but is 1 μm or more 50
It is preferably 0 μm or less, more preferably 10 μm.
m or more and 200 μm or less, more preferably 20
It is preferable that the thickness is from 100 μm to 100 μm.

Further, the above-mentioned porous substance can be contained in such an adhesive layer or a temporary adhesive layer. This structure is preferable because the dye is absorbed faster. The content of the porous substance is preferably 5% or more and 70% or less, more preferably 10% or more and 50% or less.
If it is less than 5%, the effect of the porous substance is small, and if it exceeds 70%, the effect of sticking or adhesion becomes small, which is not preferable.

In the dye-absorbing sheet of the present invention, it is important to have an adhesive layer or a temporary adhesive layer on at least one side of the sheet material. In the present invention, an image is temporarily formed on a cloth with an ink containing a dye as a main component, and an excess dye absorbing sheet is overlaid to heat the dye to dye the dye and simultaneously absorb and remove the excess dye. With the temporary adhesive layer, the excess dye can be completely and quickly removed, and an information cloth excellent in fastness such as rubbing, sublimation, and washing can be obtained.

The adhesive strength of the tacky or temporary adhesive layer in the present invention is not particularly limited as long as it can be easily peeled off from the cloth after absorbing the dye and no adhesive or adhesive remains on the cloth. By force, preferably 2-6
It is preferably 00 g / cm, more preferably 5 to 500 g / cm, and particularly preferably 10 to 400 g / cm. When the adhesive strength is low, the dye absorption effect is weak, and when the adhesive strength is too high, the adhesiveness tends to be excessive and the printed image or the fabric itself tends to be damaged.

The fabric used in the present invention is not particularly limited, and woven fabrics, knitted fabrics, non-woven fabrics, etc. made of natural fibers such as cotton and silk, synthetic fibers such as polyamide type and polyester type are used. Woven fabric is preferred from the point,
Further, the polyester fiber, particularly the single fiber degree is 0.000.
A fabric mainly composed of ultrafine fibers of 1 denier or more and 1 denier or less is preferable because it has excellent flatness smoothness and a very clear image can be obtained at the time of printing. A fabric in which two types of ultrafine fibers such as polyamide fibers and polyester fibers are well mixed is preferable because it has a dense surface and, in turn, a surface having excellent smoothness. It is also a preferred method to subject the surface of the ultrafine fabric to a high-speed fluid flow treatment (water jet punch) to open and / or entangle the ultrafine fibers to densify the surface. Further, calendering is also a preferable treatment because it improves the surface smoothness. The method for producing these ultrafine fibers is not particularly limited, and various ordinary techniques can be used.

The dye used in the present invention is not particularly limited, such as a disperse dye and a basic dye, but it is preferable to use a dye having high sublimation fastness. Specifically, it is sublimable and has a sublimation temperature of 180 ° C. Above 300 ° C, preferably 200
It is preferable that the temperature is not lower than 250 ° C and not higher than 250 ° C. Sublimation temperature is 180
If the temperature is lower than 0 ° C, the fastness of the printed image is deteriorated, and if the temperature is higher than 300 ° C, the dyeing on the fabric is not sufficiently performed, which is not preferable. The sublimation temperature in the present invention means a temperature at which the vapor pressure (sublimation pressure) of the sublimable dye becomes equal to the external pressure.

The method for temporarily forming an image in the present invention is not particularly limited, and any method can be used as long as it is a method such as ink jet dyeing, thermal transfer dyeing, etc., where dyeing is performed by heat treatment after forming the temporary image.

The identification mark referred to in the present invention is a symbol coded by a bar code, a two-dimensional code, an OCR or the like, and can be read by optical or other methods by an arbitrary reading device corresponding to these. However, the standard and the like are not particularly limited.

The heat treatment method of the present invention is not particularly limited, and examples thereof include steam heat treatment with steam or the like, hot air treatment with an oven or the like, dry heat treatment with a heat roller, a heat press or the like. The heating method is preferable because dyeing and the like can be performed more effectively. The conditions such as the heating temperature and the heating time are appropriately determined depending on the dye, cloth and the like to be used.

[0022]

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples.

Example 1 A high density woven fabric made of 0.06 denier ultrafine polyester filament fibers was subjected to water jet punch treatment and then calendered to obtain a dense fabric having a smooth surface. Then, a barcode was printed by an ink containing a disperse dye (CI. Disperse Blue 207) as a main component by a thermal transfer method to form a temporary image of the barcode.

On the other hand, on one side of a 250 μm thick wood free paper,
An acrylic rubber-based temporary adhesive was coated to a thickness of 20 to 40 μm to prepare an excess dye absorbing sheet. The adhesive surface of this excess dye absorbing sheet is superposed on the image forming surface of the cloth on which the temporary image of the bar code is formed, and the temperature is 1 at 180 ° C.
A heat press treatment was performed for a minute. The fastness of the obtained bar code image by dyeing was good in rubbing, sublimation and washing.

Example 2 The procedure of Example 1 was repeated, except that a polyester film having a thickness of 50 μm (Lumirror, manufactured by Toray) was used in place of the woodfree paper. The fastness of the obtained barcode image was good.

Comparative Example The procedure of Example 1 was repeated except that only fine wood was used as the excess dye absorbing sheet. The image of the obtained bar code was good in the fastness to rubbing, but the fastness to sublimation was transferred on some coated fabrics.

[0027]

As described above, the present invention uses an excess dye absorbing sheet having an adhesive layer or a temporary adhesive layer, so that it does not require a wet process such as washing with water, and it is fast against rubbing by dyeing, sublimation, washing and the like. A fabric on which an excellent image is formed can be easily obtained. In particular, complete dry dyeing is possible because no wet process is required.

Claims (6)

[Claims] 1. A dye-absorbing sheet comprising an adhesive layer or a temporary adhesive layer on at least one side of a dye-absorbing sheet material. 2. The dye absorbing sheet according to claim 1, wherein the adhesive layer or the temporary adhesive layer contains a porous substance. 3. The dye-absorbing sheet according to claim 1, wherein the sheet material is paper. 4. The dye-absorbing sheet according to claim 1, wherein the sheet-shaped material is a polymer film. 5. The dye-absorbing sheet according to claim 1, wherein the sheet-shaped material is a porous sheet. 6. A dye-absorptive sheet-like material having an adhesive layer or a temporary adhesive layer on at least one surface after temporarily forming an image of a character, a picture, an identification mark, or the like on a cloth with an ink containing a dye as a main component. The surface having the adhesive layer or the temporary adhesive layer of an object is overlaid on the image forming surface of the cloth so as to cover at least the entire image forming portion, and heat treatment is performed in that state to form the temporarily formed image. A method for producing an information cloth, wherein a dye to be formed is permeated and diffused into fibers constituting the cloth to be dyed, and at the same time, an excess dye is removed.