JPS6254915B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to printing techniques such as colored resist dyeing and white resist dyeing,
and relating to the transfer of metal foils among others,
Specifically, the purpose is to prevent the transfer of the metal foil after the resist dyeing treatment from being hindered by the previously transferred resist coating.

In the Yuzen dyeing process, a printing paste containing the necessary dyes, discharge printing agents, etc. is printed on the fabric to be dyed, and then a resist dyeing film is laminated and coated on the printed area, and then a screen, roller, or brush is applied. , overcoat with ground dyeing liquid by hand painting, etc., and then
Post-processing finishes such as drying or steam coloring, descaling, washing with water, and drying are performed.

In this case, the partial lamination of the resist coating is generally performed by any of the following methods A, B, C, and D.

Method A: A water-repellent composition such as paraffin or wax is printed by machine or by hand.

Method B: A water-insoluble resin emulsion composition of vinyl acetate resin and acrylic resin is printed by machine or by hand.

Method C: A water-soluble glue composition such as polyvinyl alcohol, crystal gum, etc. suitably blended with a dye resisting agent such as tin chloride or tin phosphate is applied thicker by machine or by hand than in the case of methods A and B. Stamp it.

Method D: A water-impermeable sheet such as a vinyl acetate resin film or an acrylic resin film, which has been temporarily adhered to and supported on a release paper, is cut out according to the outline of the desired printing pattern, and then laminated and adhered.

Each of these conventional methods has advantages and disadvantages as described below, which poses an obstacle to promoting rationalization of the dyeing process.

When using method A: Since water repellent agents such as paraffin and wax are non-hydrophilic, they are expected to have a perfect anti-staining effect, but they require cleaning with an organic solvent during the desizing process.
Occupational health, pollution,
There are problems in terms of equipment costs, etc.

In the case of Method B: A complete resisting effect is expected as in the case of Method A, but water evaporates during the printing process of the emulsion, and the emulsion composition may stain equipment and utensils such as screens, brushes, and brushes. There are also problems in terms of workability, such as sticking to the screen and clogging the screen, which takes time to sort out after work.

When using Method C: A water-soluble resist coating is formed without clogging the screen during the overcoat process.
The subsequent desizing treatment can be easily carried out as a water washing treatment, but in order to layer a thick resist coating, it is necessary to repeat printing and drying several times and gradually build up the thickness. During the process of transporting the dyed fabric to the next process, cracks and peeling tend to occur, so a complete resisting effect cannot be expected.

Method D: Cutting and gluing a water-impermeable sheet to the outline of a printed pattern is difficult and extremely inefficient even with a high level of skill;
This method is used as an emergency measure when defects such as lamination spots are discovered in the resist dyeing film laminated according to the law, so it is not suitable for streamlining the dyeing process.

In addition to these inconveniences, in any case of method A, method B, or method C, when printing the resist film composition mechanically using a screen printing device, the screen type used is It is expensive, and there is also a problem in that the printing pattern may be misaligned with the printing pattern of the printing paste that was printed earlier.In addition, the hand-drawn printing of the composition for resist dyeing film is difficult as the printing pattern becomes more complex and delicate. Extremely difficult.

Therefore, the inventor of the present invention printed a water-soluble viscous printing paste on a fabric to be dyed, pressed the printed surface with a sheet laminated with a resist dyeing film, transferred the resist dyeing film, and created a printing paste. Invented a technology to cover and resist dyeing the printed parts of the paper, and filed a patent application on August 30, 1981 (hereinafter referred to as the "prior application").

In the prior invention, the pressure contact during transfer is
This is carried out by a heat transfer press method using the pressure of a hot body such as an iron, a welding method using the press of a high-frequency electrode, a non-heat press method that does not involve heating in a high temperature range, and a combination of these methods. A sheet (hereinafter referred to as a resist transfer sheet) on which a resist dyeing film (hereinafter simply referred to as a resist layer) is laminated in advance is generally made of a strong paper, polyester film, etc. that has mold release properties as a base sheet. Then, a resin composition having thermoplasticity, non-water solubility, or hydrophobicity is wet-laminated or dry-laminated, or a resin film having the physical properties is laminated thereon to form an anti-dye coating layer (hereinafter simply referred to as It is prepared by laminating layers (referred to as a resist dye layer).

According to the heat transfer and pressure method, the printing paste is prepared by mixing a low-melting point substance, and when the resist dye transfer sheet is layered on the printed fabric and heated with an iron etc., the printing paste is present in the printed area. The dyed fabric and the resist transfer sheet are fused together by the thermal melting of the low melting point substance, and when they are then separated, the resist layer is partially peeled off from the base sheet of the resist transfer sheet, and the printing paste is removed. It is transferred to the dyed fabric so as to cover the printed area.

According to the welder pressure method, the printing paste is prepared by blending compounds with high-frequency dielectric heat generation properties such as metal salts and polyvinyl chloride powder, and the printed fabric is overlaid with a resist transfer sheet, and a high-frequency electrode is applied to the printing paste. High frequency waves are irradiated while applying pressure between the terminals, and the printing paste is thermally melted by internal heat generation of the printed printing paste, and the resisting layer of the resisting transfer sheet is coated in the same manner as the heat transfer and pressure method described above. Partially transferred to dyed fabric.

According to the non-heated and pressurized method, printing paste is prepared by blending compounds with internal migration properties such as organic solvents and low molecular weight plasticizers, and the printed fabrics to be dyed are stacked and pressed together to create an internal migration property. The compound is transferred from the printed printing paste to the resist dyeing layer, and this transfer adheres the printed part of the dyed fabric and the resist transfer sheet, and then they are separated, and the resist dyeing of the resist dye transfer sheet is performed. The layer is partially transferred onto the dyed fabric, thereby covering the printed areas of the dyed fabric with a resist layer.

In any of the above press-contacting methods, the resist dyeing layer of the resist dye transfer sheet is firstly coated on the part of the fabric to be dyed where the printing paste is not printed (hereinafter referred to as the fabric part).
Having physical properties that prevent adhesion during pressure welding, second
Second, the shear strength is so small that the printed portion is partially peeled off from the base sheet during separation after pressure bonding, and thirdly, before transfer, due to bending of the base sheet, After transfer, physical properties are required such that the dyed fabric has a toughness that does not cause cracks or cracks due to bending of the dyed fabric.

Therefore, the main material for the resist dyeing layer is non- or poorly water-soluble plastic synthetic resin such as polyvinyl acetate, acrylic ester, polyester, polyamide (nylon), etc., and hard resin such as polystyrene, melamine resin, or methyl cellulose is used as the main material. Other resins that are compatible with the above-mentioned thermoplastic resins, such as water-soluble resins such as carboxymethylcellulose soda salt, shall be blended as appropriate to reduce tackiness and shear strength, and in particular, to reduce shear strength. Add filler to. In this case, the toughness must not be lost due to the addition of a large amount of filler, and for this purpose it is recommended to use, for example, artificial glass hollow body powder having a perfect spherical shape as the filler.

The physical properties of the resist layer, such as shear strength and toughness, must be considered in relation to its thickness and lamination form, as well as in relation to the physical properties and form of the printing paste in the printed area to be transferred and coated. In the case of a resist dyeing layer rich in color, the laminated thickness is made thinner to reduce the shear strength.

Therefore, for example, when laminating a strong resin such as polyester or nylon on a base material as a resin for the resist dyeing layer of a resist dyeing transfer sheet, it is necessary to mix a large amount of filler in the lamination. Alternatively, an unblended resist dyeing layer resin can be laminated on the base material as a binder, and then fine particles can be adhered thereon according to metal vapor deposition or electrostatic coating methods, or alternatively, a required binder can be laminated, and then the By laminating fine grains on top and then laminating the resist layer, the amount of the layer is substantially reduced while maintaining the toughness of the resin composition of the resist layer, thereby reducing the shear strength of the resist layer. use

Firstly, the printing paste must not penetrate into the inside of the dyed fabric very much during printing in order to facilitate the desizing process, and secondly, it must be flexible to the extent that it does not cause cracks in the resist layer after transfer. Thirdly, it has heat insulating properties to avoid fusion between the low melting point resin in the printing paste and the dyed fabric, especially when an iron is pressed against the transfer sheet side in the heat transfer heating method. This is required. The first condition stated here is
This is related to the third condition.

Therefore, in order to prepare a printing paste, a base paste with a high solid content concentration of 30 to 50% or more, such as crystal gum, gum arabic, starch, or starch derivatives, is used, and glycerin, polyethylene glycol, etc. , sodium ribnin sulfonate, urea, hygroscopic softeners such as conjugated diene/maleic acid derivative copolymer, talc, calcium carbonate,
The composition is made by blending fillers such as artificial glass balloons (hollow fine particles), and in particular, etherified starch, esterified starch, crosslinked starch, kraft copolymerized starch, etc. are mixed at room temperature and swell or gelatinize. A starch derivative of the type that does not contain starch is used as a base paste, or is blended with another base paste.

In particular, the low melting point substances that compose the printing paste in the heat transfer press method include water-soluble polyvinylpyrrolidone, polyvinyl alcohol, polyalkylene oxide copolymer, water-insoluble polypropylene, polyester, polyamide, ethylene/vinyl acetate copolymer, and Furthermore, these copolymer resins are used. Among these, water-soluble resins such as polyvinylpyrrolidone are also used as base pastes, and their blending ratio is not particularly limited. The water-insoluble resin must be blended to the extent that it does not form a poorly water-soluble film when pressed, and when the water-insoluble resin is used as a resin emulsion, the solid content ratio should be in the range of 10 to 50%, and when it is used as a resin powder, the solid content should be within the range of 10 to 50%. is 100~200℃
Preferably, a low melting point polyester, nylon, etc. having a particle size of 150 to 300 mesh at 100 to 150°C is blended into the water-soluble base glue in a solid content ratio of 10 to 30%.

In this way, when the resist dye transfer sheet is pressed against the dyed fabric with the resist dye layer facing the printed area, the resist dye layer adheres to the surface of the printed area, and as the resist dye transfer sheet is peeled off, the resist dye layer is transferred. be done. Therefore, even if the printing pattern is complex and delicate, it can be resist-dyed reliably and with high efficiency, and the leakage of coating and lamination of the resist-dye layer, which tends to occur in the conventional method of hand-drawing and printing the resist-dye composition, can be avoided. Forgetting) is definitely prevented.

In the above prior invention, when the resist dyeing layer of the resist dyeing transfer sheet is the colored layer 6 made of pigment, gold powder, silver powder, etc., and the printing paste 1 is water-insoluble, the printing paste is applied to the surface of the dyed fabric by transfer. It will be clear that a wash-resistant colored pattern attached to the printed outline will be transferred and drawn.

In order to improve the washing resistance of the transferred pattern, it is preferable to use a heat transfer pressure method for pressure bonding in the transfer of the colored layer. It is desirable to add ester, polyvinyl acetate, polyurethane, polyethylene, ethylene/vinyl acetate copolymer, ethylene/vinyl acetate/acrylic acid ester copolymer, etc., and further add coloring agents such as pigments, dyes, and gold powder. In addition, in order to suppress internal penetration into the dyed fabric and give it a good texture, it is recommended that the printing paste be composed mainly of powder of a low-melting substance that has thermal adhesive properties.

Printing paste (hereinafter referred to as
It is called colored transfer glue. ) printing paste (hereinafter referred to as colored printing) is used to prevent pattern misalignment between the transferred pattern of the colored layer and the resist dyeing pattern. In more detail, before the de-sizing treatment of the dye transfer paste (hereinafter referred to as dye transfer paste)
It is called resist printing. ) is desirable to be carried out in the same process. To do this, as shown in Fig. 1, the colored transfer paste 1 is first printed, then the resist dye transfer paste 2 is printed so as to cover the printed part, and then the resist dye layer 3 is transferred. Apply ground dye dyeing liquid 4 and dye the ground dye,
The resist dye transfer paste 2 and the resist dye layer 3 covering the colored print area 5 are removed along with the desizing process of the resist dye transfer paste 2, and the colored print appears on the surface again as shown in FIG. It is sufficient to transfer the colored layer 6 onto the colored transfer paste 1 of section 5 (Fig. 2), but most of the patterns drawn by colored printing in textile printing patterns are colored printing patterns or resist dyeing printing patterns 7. The so-called thread 51 surrounding the
This is an extremely delicate line drawing pattern, and as a practical matter, it is an extremely difficult task that is close to impossible to print the resist dye transfer paste 21 while reliably following the delicate threads 51 of the colored printing. As shown in FIG. 3, the patterns of the resist printing 2 and the colored printing portion 1 are misaligned, and as shown in FIG. A water-insoluble resist dyeing layer 32 adheres to the colored printing portion 1 that remains uncoated with the transfer glue 2,
This causes problems such as hindering the transfer of the colored layer 61.

The present invention is intended to solve this problem, and for this purpose, the transfer sheet 9 laminated with a resist dyeing layer is coated with a back layer 1 that does not exhibit pressure-sensitive adhesion to the dyed fabric 10.
2 (hereinafter referred to as a non-thermally adhesive surface layer), an intermediate layer 13 having thermally adhesive properties, and a surface layer made of a base sheet 14;
The surface layer 12 and/or the intermediate layer 13 is used as a resist dyeing layer,
Moreover, the gist is to make the adhesive force between the back layer 14 and the intermediate layer 13 smaller than the adhesive force between the intermediate layer 13 and the front layer 12 in a high temperature range.

That is, the transfer sheet 9 of the present invention has a heat-adhesive intermediate layer between the resist dyeing layer of the transfer sheet and the base sheet in the prior invention, and has a higher adhesive force with the base sheet in a high temperature range. The difference is that the adhesive force with the resist dyeing layer is increased, and this is a feature of the present invention. Therefore, this transfer sheet 9 is made by coating and laminating an ethylene/vinyl acetate copolymer resin, etc., which was exemplified as a low melting point substance in the invention of the previous application, on a base sheet 14 coated with polyester having excellent mold release properties or a mold release agent. The intermediate layer 13 can be formed by laminating the resist dyeing layer 12 exemplified in the invention of the prior application on top of the intermediate layer 13.
In this case, it goes without saying that in the present invention, the resist dyeing layer serving as the surface layer 12 is required to have various physical properties required for the resist dyeing layer in the prior invention. However, in the present invention, the heat-adhesive intermediate layer 13 is transferred as a water-impermeable film by pressurization with the dyed fabric 10, and functions as a dye resisting layer itself. is not necessarily required to have various physical properties as a resist dyeing layer such as water insolubility and resist dyeing property, therefore, as shown in FIG. Alternatively, a non-aqueous heat-adhesive resin composition 13 consisting of an ethylene/vinyl acetate copolymer resin powder and an acrylic acid ester resin emulsion is applied to form a dye-resistant intermediate layer, and crystal gum or gum arabic is applied thereon. A resist dyeing film transfer sheet can also be prepared by applying a water-soluble non-thermal adhesive resin composition 12 such as starch or the like and laminating a non-resist surface layer.

Then, as shown in FIG. 6, the colored transfer glue 1' was printed, and the colored printed part 5' was not covered at all, and the resist dyeing transfer glue 2' was applied without completely covering the threads 51'. Even if the resist dyeing layer 3' is transferred and coated on the colored printed area 5'(11') that is not covered by the resist dye transfer paste 2', the coloring will not be removed during the desizing process. Since the surface of the resist dyeing layer 31' remaining on the printed portion 5' (Fig. 7) is the intermediate layer 13 of the transfer sheet 9 which has thermal adhesive properties like the colored transfer glue 1', The transfer of the colored layer 6 is not hindered in any way.

Therefore, color printing and resist printing are performed, then the resist dyeing layers 12 and 13 of the resist dye transfer sheet 9 are transferred, resist dyeing and coloring treatment are performed, and the resist dye transfer paste is desized. When transferring the colored layer of the colored transfer sheet,
There is no defect in the transfer of the colored layer, and there are no white spots due to pattern misalignment between the colored and resist dyed prints, and the beautiful and beautiful image is created by accurately synthesizing the resist dyed pattern and the colored transfer pattern. The printed pattern is drawn.

As is clear, according to the present invention, the Yuzen dyeing process is significantly improved, and high quality Yuzen fabrics can be effectively obtained.

In order to ensure perfect resist dyeing, the surface layer 12 and/or intermediate layer of the resist dye transfer sheet 9 contains fine activated carbon powder, quaternary ammonium salt, tin chloride or zinc powder, etc. The effects of the present invention can be further ensured by taking measures such as absorbing the background dyeing solution leaking through pinholes or other places in the resist dyeing layer.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view schematically showing the dyed fabric in the printing process, Figure 2 is a cross-sectional view schematically showing the dyed fabric after printing, and Figure 3 is a schematic cross-sectional view of the dyed fabric in the printing process. FIG. 4 is a cross-sectional view schematically showing the dyed fabric after printing, FIG. 5 is a resist dye transfer sheet according to the present invention, and FIG. 6 is a schematic cross-sectional view showing the dyed fabric in the printing process. The sectional view shown in FIG. 7 is a sectional view schematically showing the dyed fabric after printing. DESCRIPTION OF SYMBOLS 1... Colored transfer paste, 2... Resist dye transfer paste, 3... Resist dye (coat) layer, 4... Background dye liquid, 6... Colored layer, 9... Resist dye transfer film transfer sheet, 10... Fabric to be dyed, 12... Non-thermally adhesive surface layer, 13...thermally adhesive intermediate layer, 14...base sheet back layer.

Claims (1)

[Claims] 1 It has a laminated structure of at least three layers: a surface layer that does not exhibit pressure-sensitive adhesive properties to the fabric to be dyed, a heat-adhesive intermediate layer, and a back layer of the base sheet, and the surface layer and/or the intermediate layer has resisting properties. 1. An anti-dye coating transfer sheet, characterized in that the adhesive force between the back layer and the intermediate layer in a high temperature range is smaller than the adhesive force between the intermediate layer and the surface layer.