JPS5943179A - Resist style method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention relates to printing techniques such as colored resist dyeing and extraction resist dyeing, and in particular, to combine the dyeing process of high-grade Yuzen dyeing, which depicts complex printing patterns in various colors. The purpose is to

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 used. A background dyeing solution is overcoated by methods such as drawing and hand-drawing, and then post-processing finishes such as drying or steam coloring, de-sizing, washing with water, and drying are performed.

In this case, the partial coating layers of the resist coating are generally the following A, B,
This is done by either method C or method 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 such as vinyl acetate resin or acrylic resin is printed by machine or by hand.

Method C: A water-bathable glue composition such as polyvinyl alcohol or crystal gum mixed with an appropriate dye resisting agent such as tin chloride or tin phosphate is applied to a thicker machine or hand stamp than in the case of methods A and B. Stamp.

Method D: A non-water-permeable piece of vinyl acetate resin film, acrylic resin film, etc., which has been temporarily adhered and supported on release paper, is cut out according to the outline of the desired printing pattern, and this is pasted and adhered.

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

Method A: Since water repellents such as paraffin and wax are non-hydrophilic, a perfect anti-dyeing effect is expected, but cleaning with an organic solvent is required in the desizing process, and their volatilization may cause environmental pollution. There are problems in terms of occupational health, pollution, equipment costs, etc., such as the need for expensive equipment to collect and dispose of organic solvents and organic solvents.

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 emulsion 6 composition is applied to equipment and utensils such as cleaners, brushes, brushes, etc. There are also problems in terms of workability, such as clogging of the fixed screen and time-consuming cleaning after work.

When using method C: The screen does not become clogged during the overcoat process, and a water-soluble infected film is formed, so the subsequent desizing process can be easily performed as a water washing process, but a thick anti-dye coating is required. In order to laminate the undyed fabric, it is necessary to repeat printing and drying several times to gradually build up the thickness, and the thick film tends to crack or peel off during the process of transporting the undyed fabric to the next process, so it cannot be completely coated. A good anti-staining effect cannot be expected.

Method D: Cutting and gluing a non-water permeable 4'1 sheet to the outline of a printed pattern is difficult and extremely inefficient even with a high degree of skill, and methods A, B, C, etc. This method is used as an emergency measure when defects such as lamination spots are discovered in the laminated resist coating, 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 composition for a resist coating film mechanically using a screen printing device, the screen type used is It is expensive, and there is also a problem in that the pattern may be misaligned with the printing pattern of the printing paste that was previously printed.Furthermore, hand-printing of the composition for resist dyeing film is difficult as the printing pattern becomes more complex and delicate. Extremely difficult.

Therefore, the present invention attempts to solve this problem by laminating the resist dyeing film by pre-layering the resist dyeing film uniformly and plainly on the surface of the base sheet and by transferring from the sheet. be.

That is, in the present invention, a resist dyeing film is laminated on the printed surface of a fabric to be dyed, which has been printed with a water-soluble viscous composition using a printing paste, and the surface of the resist dyeing film of the sheet is pressed against the printed surface of the fabric. The gist of the invention is to transfer and coat only the printed portion of the dyed fabric with the resist dyeing film by separating the sheet and the dyed fabric.

Pressure bonding during transfer is performed using a heat transfer method using pressure from a hot body such as an iron, a welding method using pressure from a high-frequency electrode, a non-heating method that does not use heat in a high temperature range, and a combination of these methods. be able to. A sheet coated with a resist coating in advance (hereinafter referred to as a transfer sheet)
In general, a base sheet is made of paper, polyester fill, etc., which is strong and has mold releasability, and a resin composition having thermoplasticity and non-or slightly water-soluble or hydrophobic properties is wet-laminated or It is prepared by dry laminating or laminating a resin film having the relevant physical properties to form a resist dyeing film layer (hereinafter simply referred to as resist dyeing layer).

According to the heat transfer method, the printing paste is prepared by mixing a low-melting point substance, and when the transfer sheet is placed on the printed dyed fabric and heated with an iron or the like, the low-melting point substance present in the printed area is removed. The dyed fabric and the transfer sheet are fused together by thermal melting, and when they are then separated, the resist dyeing layer is partially peeled off from the base sheet of the transfer sheet, and the printing part of the printing paste is dyed. It is transferred to the dyed fabric in a similar manner.

According to the welder press 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 a transfer sheet is layered on the printed dyed fabric, and a high frequency electrode terminal is applied. High frequency waves are irradiated while pressing between the printing paste and the printed printing paste is heated to melt the printing paste, and the resisting layer of the transfer sheet is transferred to the dyed fabric in the same manner as the heat transfer press method described above. and partially transcribed.

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,
The transfer adheres the printed part of the dyed fabric and the transfer sheet, and then they are separated, and the resist layer of the transfer sheet is partially transferred to the dyed fabric, thereby The printed portion of the fabric to be dyed is covered with a resist dyeing layer.

In any of the above press-contacting methods, first, the printing paste does not adhere to the part of the dyed fabric (hereinafter referred to as the fabric part) that is not printed on the resist layer of the transfer sheet during press-contact. secondly, the shear strength is so low that it can be partially peeled off from the base sheet as if it were cut into the imprinted area during separation after pressure bonding, and thirdly, the The material is required to have such toughness that it does not cause cracks or ruptures due to bending of the material or, after transfer, due to bending of the dyed fabric.

Therefore, a non- or poorly water-soluble plastic synthetic resin such as polyvinyl acetate, acrylic ester, polyester, polyamide (nylon), etc. must be used for the resist dyeing layer. However, hard resins such as polystyrene and melamine resins, water-soluble resins such as methylcellulose and carboxymethylcellulose soda salt, and other resins that are compatible with the above-mentioned thermoplastic resins may be used to reduce tackiness and shear strength. It is also possible to add fillers, especially to reduce shear strength. However, the toughness must not be lost due to the addition of a large amount of filler, and in order to avoid this, it is recommended to use as the filler, for example, artificial glass hollow sphere powder having a perfect spherical shape.

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 V resin such as polyester or nylon on the material 3 as a resin constituting the resist dyeing layer 2 of the transfer sheet 1, filler 4 is used as shown in FIG.
In addition, as shown in FIG. 2, a resist dyeing layer resin with or without filler is laminated on the base material 3 as a binder 5, and then metal vapor deposition or electrostatic Glue the fine particles 6 according to the painting method,
Alternatively, as shown in FIG. 3, the required binder 7 is laminated, then the fine grains 6 are laminated on the grooves, and then the resist dyeing layer 8 is laminated.
It is preferable to laminate the resist layer and substantially reduce the number of laminated portions while maintaining the toughness of the resin composition of the resist layer, thereby reducing the shear strength of the resist layer.

Firstly, the printing paste must not penetrate much into the fabric to be dyed 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 mentioned here is related to the third condition. That is, when the printing part of the printing paste 9 is enlarged as a model, as shown in FIG. 4, even if the printing thickness of the printing paste 9 is t, the penetration depth into the dyed fabric 10 is b. If so, the distance a between the transfer sheet 1 and the covered fabric 10 during pressure heating by the heat transfer pressure method is a=t-b, a<t
The amount of heat transferred from the transfer sheet through the printing paste layer 9 increases, and the risk of separation between the low melting point substance in the printing paste and the dyed fabric 10 increases accordingly. . Also, due to the penetration of the printing paste, the resist dyeing layer 1
It is unfavorable for 1 to approach the dyed fabric 10 from the viewpoint of resist dyeing, and the first condition is thus important as it also influences the resist dyeing effect. In fact, the permeability of printing paste, which can be seen microscopically as shown in Figure 4, has a subtle influence as a practical matter.

Therefore, to prepare printing paste, the solid content ratio of crystal gum, gum arabic, starch, starch derivatives, etc. is 3.
Use a base glue with a high solid content concentration of 0 to 50% or more, and add moisture-absorbing softeners such as glycerin, polyethylene glycol, sodium lipnin sulfonate, urea, conjugated diene/maleic acid derivative copolymer, and talc. It is desirable to mix fillers such as , calcium carbonate, and artificial glass balloons (hollow microparticles) into the composition.In particular, etherified starch, esterified starch, crosslinked starch, graft copolymerized starch, etc. are mixed at room temperature. It is appropriate to use a type of starch derivative that does not swell or gelatinize as the base glue, or to use it in other combinations.

In particular, the low melting point substances used to compose the printing paste in the heat transfer press method include water-bathable polyvinylpyrrolidone, polyvinyl alcohol, polyalkylene oxide copolymer,
Non-water bathable polypropylene, polyester, polyamide, ethylene/vinyl acetate copolymer, and also copolymer resins thereof are used. Among these, water-soluble resins such as polyvinylpyrrolidone are also used as base pastes, and there are no particular restrictions on their blending ratio, but water-insoluble resins such as polypropylene are used as printing pastes, which are composed together with base pastes for water baths. It must be blended to the extent that it does not form a poorly water-soluble film when subjected to heat transfer and pressure, and when the water-insoluble resin is used as a resin emulsion, the solid content ratio is 10 to 50.
%, and when used as a resin powder, a low melting point polyester with a thermal melting point of 100 to 200°C, preferably 100 to 150°C, and a particle size of 150 to 300 mesh;
It is preferable to mix nylon or the like into the water-soluble base paste in a solid content ratio of 10 to 30%.

Next, to explain the effects of the present invention, as is already clear, the surface film formed by the resist dyeing layer of the printing part of the printing paste is in pressure contact with the transfer sheet on which the resist dyeing layer is uniformly laminated over the entire surface. →Since separation (peeling/transfer) is used, transfer sheets can be easily manufactured without requiring any special equipment such as a printing machine, and even if the printed pattern is complex, the resist dye layer can be applied to the printed area. It does not require a special printing screen to be laminated, there is no pattern shift in the printed pattern, and there is no need to laminate a resist layer on each part of the printed pattern individually. This is eliminated, and all parts of the printed pattern drawn on the entire surface of the fabric to be dyed can be resist-dyed at once, and therefore the resist-dyeing process can be carried out quickly and reliably.

[Brief explanation of the drawing]

Figures 1, 2 and 3 are cross-sectional views schematically showing the transfer sheet according to the present invention, and Figure 4 is a diagram showing the overlapping of the transfer sheet and dyed fabric during resist dyeing treatment. FIG. 3 is a cross-sectional view schematically showing a mating state. 1... Transfer sheet 3... Base material 2, 5, 8, 11... Resistant layer 9... Printing paste 10... Treated dyed fabric

Claims (1)

[Claims] On the printed surface of the dyed fabric printed with the water-soluble viscous composition,
Resist dyeing characterized in that the resist dye coating surface of the resist dye coating laminated sheet is pressed, the fabric and the sheet are then separated, and the resist coating is transferred and coated only on the printed portion of the fabric to be dyed. Law.