JP2965474B2 - Thermal transfer marking sheet for sublimation prevention and method for producing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sublimation-preventing method for preventing transfer by a dye of a transfer material when a thermal transfer marking sheet is transferred onto or after transfer of a polyester fiber garment or the like. The present invention relates to a thermal transfer marking sheet.

[0002]

2. Description of the Related Art Hitherto, garments made of polyester fibers have been disadvantageously referred to as dye transfer because they are dyed with a disperse dye. In other words, dyeing with a disperse dye used in clothing made of polyester fiber pushes the dye molecules into the polyester fiber substrate by a treatment such as high temperature and high pressure because there is no binding force due to the reaction between the fiber and the disperse dye. This is what is being dyed.

Conventionally, a thermal transfer marking sheet composed of a release material, a paint, and an adhesive has been used for attaching a serial number and a mark to a polyester fiber cloth. When heat-bonded to clothes or the like, the dye of the polyester fiber easily migrates to the thermal transfer marking sheet by heating, thereby contaminating (discoloring) the marking sheet.

[0004]

Accordingly, as one method of preventing dye migration, the thickness of the coating layer of the thermal transfer marking sheet is increased to prevent the dye from migrating to the surface of the thermal transfer marking sheet. Such a method has an effect of preventing the dye from migrating at an early stage, but has the disadvantage that the dye also migrates with the passage of time. Further, when the thickness of the coating layer of the thermal transfer marking sheet is increased, dye transfer can be prevented to some extent, but the flexibility as clothing is poor, the wearing comfort is poor, and the feeling of discomfort is unfavorable. JP-A-59-32588 and JP-B-61-40794 disclose examples of using a water-soluble polymer as a method for preventing dye transfer of disperse dyes. However, this application is a transfer printing paper and a transfer printing method, and is a combination of a dye and a water-soluble polymer. If this laminate is used for clothing, washing, etc.
Water must be used, and using only a water-soluble polymer is not preferable because it dissolves in water and the thermal transfer marking sheet peels off from the cloth.

[0005]

The present inventors have made intensive efforts to solve these problems, and as a result, provided a layer in which a hydrophilic polymer and a waterproofing agent are used in combination as the inner layer of the thermal transfer marking sheet. As a result, dye transfer prevention, flexibility and washing resistance were improved.

That is, the invention of the present application is to apply a releasable coating layer on the entire surface or a necessary portion on a base sheet, form a coating layer of the entire surface or a desired pattern on the releasable coating layer, and apply the coating layer on the coating layer. Thermal transfer for sublimation prevention, comprising covering with a dye transfer prevention layer containing a hydrophilic polymer containing a cross-linking water resistance agent as a main component, and forming a hot-melt adhesive layer on the dye transfer prevention layer. It is a marking sheet.

[0007] Further, a peelable coating layer is applied on the entire surface or a necessary portion on the base sheet, and a paint layer having a desired pattern is formed on the entire surface or a desired pattern on the peelable coating layer, and crosslinked on the paint layer. It is covered with a dye migration preventing layer containing a hydrophilic polymer containing a chemical agent as a main component, and a coating layer of the entire surface or a desired pattern is further laminated on the dye migration preventing layer, and a heat layer is formed on the coating layer. It is a thermal transfer marking sheet for preventing sublimation, which is formed by forming a melt-type adhesive layer.

[0008] In addition, a transferable dye layer mainly composed of a hydrophilic polymer containing a water-resistant agent capable of crosslinking is applied on the entire surface or a necessary portion of the release sheet layer on the substrate sheet. Forming a layer, forming a paint layer of the entire surface or a desired pattern on the dye transfer prevention layer, and further comprising a hydrophilic polymer as a main component in which a water-resistant agent capable of crosslinking is mixed on the paint layer. A thermal transfer marking sheet for preventing sublimation, comprising a transfer prevention layer laminated and a hot-melt adhesive layer formed on the dye transfer prevention layer.

As a method for producing the thermal transfer marking sheet for sublimation prevention of the present invention, a release agent is applied to the entire surface or a necessary portion of a base sheet such as paper or film to form a release coating layer. A paint layer is formed by applying a paint on the entire surface or a necessary portion on the peelable coating layer, and a hydrophilic polymer containing a water-resistant agent is further applied on the paint layer, followed by crosslinking to form a dye transfer prevention layer. This is a method for producing a thermal transfer marking sheet for preventing sublimation, which is formed and further coated with a hot-melt adhesive on the dye transfer preventing layer.

Further, as a method for producing the thermal transfer marking sheet for preventing sublimation of the present invention, a release agent is applied to the entire surface or a necessary portion of a base sheet such as paper or film to form a release coating layer. A paint layer is formed by applying a paint to the entire surface or a necessary portion of the water-soluble coating layer, and a hydrophilic polymer containing a water-proofing agent is applied to the paint layer, and crosslinked to form a dye transfer prevention layer. Further, there is also provided a method for producing a thermal transfer marking sheet for sublimation prevention, which comprises applying a paint to the entire surface or a necessary portion on the dye transfer preventing layer, laminating a paint layer, and applying a hot-melt adhesive on the paint layer. It is possible.

In another method for producing the thermal transfer marking sheet for preventing sublimation of the present invention, a release agent is applied to the entire surface or a necessary portion of a base sheet such as paper or film to form a release coating layer. Applying a hydrophilic polymer containing a water-resistant agent to the release coating layer, crosslinking to form a dye transfer prevention layer, and applying a coating to the entire surface or a necessary portion of the dye transfer prevention layer. A paint layer is formed, and a hydrophilic polymer containing a water-proofing agent is applied on the paint layer, and crosslinked to form a dye transfer preventing layer. A method for producing a thermal transfer marking sheet for preventing sublimation, characterized by applying an agent, is also possible.

[0012]

According to the thermal transfer marking sheet for preventing sublimation and the method for producing the same according to the present invention, the disperse dye conventionally used in polyester fibers can easily be applied to a hydrophobic compound by the means described above. Focusing on the point that dye transfer is easy and hydrophilic water-soluble polymers, on the other hand, do not cause dye transfer of disperse dyes but are insoluble in water, so that they are inferior in washing resistance. By improving and cross-linking the hydrophilic polymer with a water-proofing agent, washing resistance can be remarkably improved, and dye transfer of the disperse dye can be completely prevented.

Table 1 shows the results of a comparison test between a thermal transfer marking sheet for preventing sublimation containing the waterproofing agent according to the present invention and a thermal transfer marking sheet for preventing sublimation using polyvinyl alcohol containing no waterproofing agent. Show.
That is, JIS-L-0854 (sublimation test during storage), using a polyester cloth dyed with a disperse dye on both of these thermal transfer marking sheets for sublimation prevention, as JIS-L-0854,
Comparative tests such as JIS-L-0217-103 method (washing resistance test) were performed.

[0014]

[Table 1] Durability test results of thermal transfer marking sheet for sublimation prevention

As apparent from Table 1, before the test, a sublimation acceleration test (sublimation test during storage: 8 hours in an atmosphere of 120 ° C.)
Exposure for 0 minutes. And long-term storage sublimation test: exposure for 60 days in an atmosphere of 50 ° C.), the thermal transfer marking sheet for preventing sublimation containing the water-resistant agent according to the present invention initially shows class 5; Class 5 was shown after the accelerated test, and class 5 was shown after the long-term storage sublimation test, indicating that the anti-sublimation property was extremely good. In addition, regarding the above-mentioned class determination such as the fifth class, JIS-L-0
805 (gray scale for contamination). The respective grades and criteria are as follows. Grade 5: Sublimation is not recognized at all. Grade 4: Slight sublimation is recognized. Class 3: Sublimation is recognized. Second grade: Sublimation is considerably recognized. Grade 1: Sublimation is remarkably recognized.

On the other hand, a thermal transfer marking sheet for preventing sublimation using polyvinyl alcohol which does not contain a water-resistant agent shows grade 5 at first and shows grade 5 even after the sublimation acceleration test. After the sublimation test, it showed a third grade, indicating that the sublimation-preventing property was significantly deteriorated. In the washing resistance test, the sublimation-preventing thermal transfer marking sheet containing the waterproofing agent according to the present invention peeled off from the polyester fabric even after 50 washes, or the sublimation-preventing thermal transfer marking sheet itself. This indicates that the adhesiveness is extremely good without saying that the layers are separated.

On the other hand, in the case of a thermal transfer marking sheet for sublimation prevention using polyvinyl alcohol which does not contain a water-resistant agent, the number of times of washing is 5 times, the peeling from the polyester fabric or the interlayer of the thermal transfer marking sheet for sublimation prevention itself. This indicates that the adhesiveness was extremely poor because of peeling. Furthermore, the sublimation-preventing thermal transfer marking sheet containing the water-proofing agent according to the present invention exhibited a class 5 value even after 50 washes, indicating that the sublimation-preventing property was extremely good.

In the comparative test shown in Table 1, a peelable coating layer was applied on the entire surface or a necessary portion of the base sheet, and a paint layer having a desired pattern was formed on the entire surface or on the peelable coating layer.
Because the coating layer was covered with a dye transfer preventing layer containing a hydrophilic polymer containing a water-resistant agent that crosslinks as a main component, and a hot-melt adhesive layer was formed on the dye transfer preventing layer. The test was carried out using a thermal transfer marking sheet for preventing sublimation, but a paint layer, and a layer alternately laminated with a dye transfer prevention layer containing a hydrophilic polymer as a main component containing a cross-linking water-resistant agent were used. And a sublimation preventing effect.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the thermal transfer marking sheet for preventing sublimation according to the present invention will be described below. That is, the present invention is to apply the peelable coating layer 3 on the entire surface or a necessary portion on the base sheet 2, and to form the paint layer 4 on the entire surface or a desired pattern on the peelable coating layer 3. A hot-melt adhesive layer 6 was formed on the dye transfer preventing layer 5, which was covered with a dye transfer preventing layer 5 containing a hydrophilic polymer 5 a as a main component and a cross-linking water-resistant agent mixed therein. Is a sublimation preventing thermal transfer marking sheet 1 comprising: (See FIG. 1).

A peelable coating layer 3 is applied to the entire surface or a necessary portion of the base sheet 2 to form a paint layer 4 having a desired pattern on the entire surface or a desired pattern. Is coated with a dye transfer prevention layer 5 mainly composed of a hydrophilic polymer 5a containing a water-resistant agent which is cross-linked to the dye transfer prevention layer 5, and further on the dye transfer prevention layer 5, a coating layer 4 of an entire surface or a desired pattern is formed. The thermal transfer marking sheet 1 for preventing sublimation, which is obtained by laminating and forming a hot-melt adhesive layer 6 on the paint layer 4. (Figure 2
reference).

In addition, the peelable coating layer 3 is formed on the base sheet 2.
Is applied to the entire surface or a necessary portion to form a dye transfer preventing layer 5 mainly composed of a hydrophilic polymer containing a water-resistant agent which is crosslinked on the peelable coating layer 3. A hydrophilic polymer 5 on which a coating layer 4 having a desired pattern is formed on the entire surface, and a water-proofing agent which is crosslinked on the coating layer 4
A sublimation preventing thermal transfer marking sheet 1 comprising a dye transfer preventing layer 5 mainly composed of a and a hot-melt adhesive layer 6 formed on the dye transfer preventing layer 5. (See FIG. 3).

The method of manufacturing the thermal transfer marking sheet 1 for preventing sublimation according to the present invention is as follows. The release agent 3a is applied to the entire surface or a necessary portion of the base sheet 2 such as paper or film to form the release coating layer 3. Forming a coating layer 4 by applying a coating 4a on the entire surface or a necessary portion on the peelable coating layer 3;
Further, a hydrophilic polymer 5 containing a waterproofing agent is provided on the paint layer 4.
a, and then crosslinked to form a dye transfer preventing layer 5, and a hot melt adhesive 6a was further applied on the dye transfer preventing layer 5 to form a hot melt adhesive layer 6. This is a method for producing a thermal transfer marking sheet for preventing sublimation. When forming the dye transfer preventing layer 5 by crosslinking, the temperature for crosslinking may or may not be heated, but when heated, it is preferably 70 to 130 ° C.

Further, as a method of manufacturing the thermal transfer marking sheet 1 for preventing sublimation of the present invention, a release agent 3a is applied to the entire surface or a necessary portion of the base sheet 2 such as paper or film to form the release coating layer 3. The coating 4a is applied to the entire surface or a necessary portion of the releasable coating layer 3 to form a coating layer 4, and a hydrophilic polymer 5a containing a water-resistant agent is applied to the coating layer 4 and crosslinked. To form a dye transfer preventing layer 5, and further apply a paint 4 a to the entire surface or a necessary portion of the dye transfer preventing layer 5 to laminate the paint layer 4, and apply a hot-melt adhesive 6 on the paint layer 4.
The method for producing the thermal transfer marking sheet 1 for preventing sublimation, which is characterized in that a is applied to form the hot-melt adhesive layer 6, is also possible. When forming the dye transfer preventing layer 5 by crosslinking, the temperature for crosslinking may or may not be heated, but when heated, it is preferably 70 to 130 ° C.

As another method for producing the thermal transfer marking sheet 1 for preventing sublimation according to the present invention, a release agent 3a is applied to the entire surface or a necessary portion of the base sheet 2 such as paper or film to form a release coating layer. 3, a hydrophilic polymer 5a containing a waterproofing agent is applied on the peelable coating layer 3 and crosslinked to form a dye transfer preventing layer 5, and the entire surface of the dye transfer preventing layer 5 or A paint layer 4 is formed by applying a paint 4a to a necessary portion, and a hydrophilic polymer 5a containing a water-resistant agent is applied on the paint layer 4 and crosslinked to form a dye transfer preventing layer 5. Further, a method of manufacturing a thermal transfer marking sheet 1 for preventing sublimation, wherein a hot-melt adhesive 6a is applied on the dye transfer preventing layer 5 to form a hot-melt adhesive layer 6, is also possible. When forming the dye transfer preventing layer 5 by crosslinking, the temperature for crosslinking may or may not be heated, but when heated, it is preferably 70 to 130 ° C.

An elastic resin layer made of a polyurethane resin is provided between the dye transfer preventing layer 5 and the hot-melt adhesive layer 6 in the thermal transfer marking sheet 1 for preventing sublimation according to the present invention. Is also good. In the thermal transfer marking sheet 1 for preventing sublimation according to the present invention, the coating layer 4 is 10 to 40 μm, and the dye transfer preventing layer 5 is 10 to 40 μm.
μ, the thickness of the hot-melt adhesive layer 6 is preferably 30 to 50 μ, and the thickness of the elastic resin layer such as polyurethane resin is 3 to 10 μ.

As for the release coating layer 3, the release coating layer 3 substantially has the properties of a protective layer of the paint layer 4 and serves as a base of a thermal transfer marking sheet for preventing sublimation. It plays a role. Therefore, after attaching the sublimation-preventing thermal transfer marking sheet 1 of the present invention to clothing, the base sheet 2 can be removed.
The base sheet 2 having releasability may be a film or paper, and a polyester film, a polyethylene film, or a polyethylene laminated paper can be used. Then, a release agent may be applied and treated to give the substrate sheet 2 a release property. As the release agent, a silicone resin, a fluorine resin, an oil or the like is used, and the strength of the release property is appropriately controlled. be able to.

As the paint for forming the paint layer 4, polyurethane resin, acrylic resin, silicone resin, vinyl acetate resin and the like can be used. Further, pigments, plasticizers and the like can be used in combination with the above resins.

Further, in the dye transfer preventing layer 5 mainly composed of the hydrophilic polymer 5a in which a cross-linking waterproofing agent is blended,
Examples of the water-proofing agent include N-methylomelamine, N-methylolurea, N-methylolacrylamide, organic isocyanate, water-soluble epoxy resin, titanium compound, zirconia compound, copper compound and the like. In particular, a water-resistant agent excellent in water resistance and flexibility is an organic isocyanate. Among the organic isocyanates, a particularly excellent one is a block type isocyanate. The waterproofing agent is
It is directly added to the hydrophilic polymer and applied to the paint layer 4,
The amount of the water-resistant agent added to the water-soluble polymer or polymer dispersion is appropriately adjusted, but is preferably 10 to 150% by weight (based on resin), and more preferably 20 to 100% by weight.
% By weight.

Further, in the thermal transfer marking sheet 1 for preventing sublimation of the present invention, the dye transfer preventing layer 5 of the thermal transfer marking sheet 1 for preventing sublimation is formed by using a hydrophilic polymer 5a containing a waterproofing agent. The hydrophilic polymer is a water-soluble polymer or a polymer dispersion.

As the water-soluble polymer, polyvinyl alcohol, polyvinylpyrrolidone, methylcellulose, carboxymethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, gelatin, casein, modified starch and the like can be used. Among them, polyvinyl alcohol is particularly preferred. The polymerization degree of the polyvinyl alcohol used is preferably from 500 to 1700, and more preferably from 500 to 1,000. The degree of saponification is preferably from 80 to 99 mol%, and more preferably from 88 to 96 mol%. The polyvinyl alcohol may be a commercially available one,
Modified products and copolymers may be used as long as the characteristics as polyvinyl alcohol can be maintained.

Examples of the modified product include modified polyvinyl alcohol such as etherification, esterification, and acetalization. The copolymer may be a monomer copolymerizable with vinyl acetate, for example, a carboxylic acid group-containing unsaturated monomer such as acrylic acid, maleic acid or itaconic acid and a salt thereof, or an amide group-containing unsaturated monomer such as acrylamide methacrylamide. Sulfonic acid group-containing unsaturated monomers such as a saturated monomer, vinyl sulfonic acid, and methallyl sulfonic acid, and copolymers thereof with polyvinyl salts are exemplified. Although the copolymerization ratio slightly varies depending on the type of the copolymer used, it is generally 0.1%.
A range of 〜１０10 mol% is employed. The above copolymers can be used alone or in combination of two or more.

The polymer dispersion may be polyvinyl acetate using polyvinyl alcohol as an emulsifying dispersant, vinyl acetate and acrylate or methacrylate, a copolymer of vinyl acetate and ethylene, vinyl acetate. And acrylate or methacrylate and styrene terpolymer dispersions. In addition,
The concentration of the polymer dispersion is generally 44 to 55% by weight,
The viscosity (25 ° C.) is preferably from 1,000 to 10,000 cp, and more preferably from 3,000 to 5,000 cp.

Next, as the hot-melt adhesive 6a used in the thermal transfer marking sheet 1 for preventing sublimation of the present invention,
A hot melt adhesive is preferred, and specifically, polyurethane resin, ethylene vinyl acetate resin, polyamide resin, atactic polypropylene and the like are used. In order to enhance the adhesiveness between the hot-melt adhesive layer 6 and the dye transfer preventing layer 5, which is a layer of the hydrophilic polymer 5a containing a water resistant agent, an elastic resin layer is preferably provided between these layers. Specifically, a layer of a polyurethane resin, an acrylic resin, or a vinyl acetate resin can be provided.

Example 1 A 100 μm-thick polyester film base sheet 2 was coated on the entire surface with a silicone resin (KS-883: a silicone resin manufactured by Shin-Etsu Chemical Co., Ltd.). A desired pattern was printed on a white paint composed of the compositions A, B, and C shown in Table 2 on a 150-mesh screen plate, and dried to form a paint layer 4 of 20 μm.
(Hereinafter, indicated by parts by weight)

[0035]

(Table 2) (White paint composition) A: Nipporan 800 (polyurethane resin made by Nippon Polyurethane) 9.1 Nipporan 1100 (polyurethane resin made by Nippon Polyurethane) 9.1 Ethyl acetate 12.0 Butyl acetate 12.0 Ethylene glycol acetate 12. 0 Toluene 15.8 Coronate HX (Nippon Polyurethane Isocyanate) 30.0 60 parts of the compound having a total of 100.0 and B: Taipaque R-550 (titanium white pigment manufactured by Ishihara Sangyo) 60.0 Dimethylformamide 40.0 30 parts of a total of 100.0 blends, C: a white paint consisting of 10 parts of a defoamer, BURONIC L-61 (1% by weight solution manufactured by Asahi Denka)

Formulation D having the composition shown in Table 3 was printed on the paint layer 4 using a 135-mesh screen plate, and then dried to form a dye transfer preventing layer 5 having a thickness of 20 μm.

[0037]

(Formulation D) D: PA-05 (Shin-Etsu Chemical polyvinyl alcohol 50.0 30% by weight solution Average polymerization degree 550, saponification degree 88 mol%) Takenate D-110N (Isocyanate 40 manufactured by Takeda Pharmaceutical Co., Ltd.) 0.0 75% solution) Cyclohexanone 9.9 Antifoaming agent Bluronic L-61 (manufactured by Asahi Denka) 0.1 Total 100.0

A hot-melt adhesive E having the composition shown in Table 4 was printed on the dye-transfer preventing layer 5 with an 80-mesh screen plate and dried to form a hot-melt adhesive layer 6.
A thermal transfer marking sheet for sublimation prevention was formed by forming 0 μm.

[0039]

(Table 4) (Hot-melt adhesive E) E: Nipporan 3110 80.0 (Polyurethane manufactured by Nippon Polyurethane 23% by weight) Cyclohexanone 19.9 Antifoaming agent Bluronic L-61 (Asahi Denka) 0.1 Total 100.0

A test was conducted after pressing the sublimation-preventing thermal transfer marking sheet 1 according to JIS-L-0854 (sublimation test during storage) using a polyester cloth dyed with a disperse dye as a transfer object. No transfer of the transferred material by the dye was observed. Also, JIS-L-
0217-103 method (washing resistance test), JIS-L-0
217-402 method (oil-based dry cleaning), JI
It has also been cleared of washing-out resistance such as SL-0849 (rubbing resistance test) and has been completed as a thermal transfer marking sheet for preventing sublimation.

Example 2 A 100 μm thick polyester film base sheet 2 was coated with a release coating layer 3 over the entire surface with a silicone resin (KS-883: silicone resin manufactured by Shin-Etsu Chemical Co., Ltd.). D is printed on a 135-mesh screen stencil after printing a desired pattern, dried to form a dye transfer preventing layer 5 of 20 μm, and a 150-mesh white paint composed of A, B, and C (see above) is formed on the pattern. And then dried to form a coating layer 4 having a thickness of 20 μm. Further, the above-mentioned compound D is laminated with a dye transfer preventing layer 5 by 20 μm in the same manner as described above, and a hot-melt adhesive E is applied in the same manner as in Example 1 to form a hot-melt adhesive layer 6, and thermal transfer for sublimation prevention is performed. A marking sheet was constructed. As a result of a test according to the same JIS standard as in Example 1 using the polyester cloth dyed with the same disperse dye as in Example 1 as a transfer-receiving material, the mark shows that the dye transfer of the transfer-receiving object was performed. Is not recognized and the result is better.

Example 3 A sublimation-prevention marking sheet was constructed in the same manner as in Example 1 except that the composition D was changed to the composition F shown in Table 5.

[0043]

[Table 5] (Composition F) F: Vinibulan 1107L 60.0 (50% by weight solution of vinyl acetate vinegar manufactured by Nissin Chemical) Takenate D-110N 30.0 (75% solution of isocyanate manufactured by Takeda Chemical) Cyclohexanone 9.9 Defoaming Agent Bruronic L-61 (made by Asahi Denka) 0.1 Total 100.0

The thermal transfer marking sheet for preventing sublimation was subjected to a JIS standard test as in Example 1 using a polyester fabric dyed with the same disperse dye as in Example 1 as a transfer object. No transfer of the dye to the transfer member was observed, which was an excellent result.

Example 4 A peelable coating layer 3 was formed on the entire surface of a base sheet 2 of a polyester film having a thickness of 300 μm with a silicone resin (KS-883: silicone resin manufactured by Shin-Etsu Chemical Co., Ltd.). A desired pattern was printed on a white paint (described above) having a composition of A, B, and C on a 150-mesh screen plate, and dried to form a paint layer 4 having a thickness of 20 μm.
The composition D (described above) was printed on the paint layer 4 using a 135-mesh screen plate, and then dried.
0 μm was formed. 5 μm of Nipporan 800 (described above) is applied on the dye transfer preventing layer 5 and a hot-melt adhesive E
The above-mentioned (printed above) was printed on an 80-mesh screen plate and dried to form a hot-melt adhesive layer 6 having a thickness of 40 μm, thereby forming a thermal transfer marking sheet for preventing sublimation. In addition, as a result of a test according to the same JIS standard as in Example 1 using the polyester cloth dyed with the same disperse dye as that of Example 1 as a transfer object, the mark of the transfer material was used as the mark. No dye transfer was observed with better results.

[0046]

As described above, the thermal transfer marking sheet for sublimation prevention provided with a dye transfer prevention layer containing a water-resistant agent in the polyvinyl alcohol of the present invention is excellent in prevention of dye transfer and excellent washing resistance. It can be widely used as a thermal transfer marking sheet for preventing sublimation.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a main part showing a thermal transfer marking sheet for sublimation prevention according to the present invention.

FIG. 2 is an enlarged sectional view of a main part showing a thermal transfer marking sheet for sublimation prevention according to the present invention.

FIG. 3 is an enlarged sectional view of a main part showing a thermal transfer marking sheet for sublimation prevention according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sublimation-prevention thermal transfer marking sheet 2 Base sheet 3a Release agent 3 Removable coating layer 4a Paint 4 Paint layer 5a Hydrophilic polymer (containing cross-linking water-resistant agent) 5 Dye transfer prevention layer 6a Hot-melt adhesive 6 Heat Fused adhesive layer 7 Transfer receiving body

Continuing from the front page (72) Inventor Hiroshi Kawata 1-12-13 Minami Kohoku, Suminoe-ku, Osaka City, Osaka Prefecture Inside Mizuno Co., Ltd. (72) Inventor Hironori Kobayashi 2-29-5 Hanadonaka, Fukui City, Fukui Prefecture Investigator, Marunouchi Co., Ltd.Naoko Matsumoto (56) References JP-A-7-305281 ( JP, A) JP-A-7-26479 (JP, A) JP-A-6-280172 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) D06P 5/00 118 B41M 5 / 30 B41M 5/40 B44C 1/17

Claims (10)

(57) [Claims] Claims: 1. A water-resistant coating, in which a peelable coating layer is applied to the entire surface or a necessary portion of a base sheet, and a coating layer having a desired pattern is formed on the entire surface or a desired pattern on the peelable coating layer, and is crosslinked on the coating layer. A thermal transfer marking sheet for sublimation prevention, comprising a dye transfer preventing layer mainly composed of a hydrophilic polymer containing an agent, and a hot-melt adhesive layer formed on the dye transfer preventing layer. 2. A water-resistant coating, in which a peelable coating layer is applied to the entire surface or a required portion of the base sheet, and a paint layer having a desired pattern is formed on the entire surface or a desired pattern on the peelable coating layer, and is crosslinked on the paint layer. It is covered with a dye migration preventing layer containing a hydrophilic polymer containing a chemical agent as a main component, and a coating layer of the entire surface or a desired pattern is further laminated on the dye migration preventing layer, and a heat layer is formed on the coating layer. A thermal transfer marking sheet for preventing sublimation, comprising a melt-type adhesive layer. 3. Prevention of transfer of a dye having a hydrophilic polymer as a main component, to which a water-resistant agent crosslinked is applied on the entire surface or a required portion of a release coating layer on a substrate sheet. Forming a layer, forming a paint layer of the entire surface or a desired pattern on the dye transfer prevention layer, and further comprising a hydrophilic polymer as a main component in which a water-resistant agent capable of crosslinking is mixed on the paint layer. A thermal transfer marking sheet for preventing sublimation, comprising a transfer prevention layer laminated and a hot-melt adhesive layer formed on the dye transfer prevention layer. 4. The dye transfer prevention layer containing a hydrophilic polymer as a main component in which the water-proofing agent is blended, wherein the water-proofing agent comprises:
The thermal transfer marking sheet for preventing sublimation according to claim 1, 2 or 3, wherein the thermal transfer marking sheet is selected from N-methylomelamine, N-methylolurea, N-methylolacrylamide, organic isocyanate, water-soluble epoxy resin, titanium compound, zirconia compound and copper compound. 5. The dye transfer prevention layer containing a hydrophilic polymer as a main component and containing a water-resistant agent, wherein the hydrophilic polymer is a water-soluble polymer or a polymer dispersion.
5. The thermal transfer marking sheet for sublimation prevention according to 2, 3, or 4. 6. The water-soluble polymer is selected from polyvinyl alcohol, polyvinylpyrrolidone, methylcellulose, carboxymethylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, gelatin, casein, and modified starch. The thermal transfer marking sheet for sublimation prevention described in the above. 7. The polymer dispersion is a dispersion obtained by using polyvinyl alcohol as an emulsifying dispersant, wherein the composition is polyvinyl acetate, vinyl acetate and acrylate,
6. The sublimation prevention according to claim 1, which is selected from a methacrylate, a copolymer of vinyl acetate and ethylene, a terpolymer of vinyl acetate and an acrylate or a methacrylate and styrene. For thermal transfer marking sheet. 8. A release agent is applied to the entire surface or a required portion of a base sheet such as paper or film to form a release coating layer,
A paint layer is formed by applying a paint on the entire surface or a necessary portion on the release coating layer, and a hydrophilic polymer containing a water-resistant agent is further applied on the paint layer, and crosslinked to form a dye transfer prevention layer. And a method for producing a thermal transfer marking sheet for sublimation prevention, comprising applying a hot-melt adhesive to the dye transfer preventing layer. 9. A release agent is applied to the entire surface or a necessary portion of a base sheet such as paper or film to form a release coating layer, and a paint is applied to the entire surface or the required portion of the release coating layer. A paint layer is formed, a hydrophilic polymer containing a water-proofing agent is applied on the paint layer, and crosslinked to form a dye transfer prevention layer. And a method of manufacturing a thermal transfer marking sheet for sublimation prevention, comprising applying a hot-melt adhesive onto the paint layer. 10. A release agent is applied to the entire surface or a required portion of a base sheet such as paper or film to form a release coating layer, and a water-resistant agent containing a water-resistant agent is formed on the release coating layer. A molecule is applied and cross-linked to form a dye transfer prevention layer, and a paint is applied to the entire surface or a necessary portion of the dye transfer prevention layer to form a paint layer. Producing a thermal transfer marking sheet for preventing sublimation, characterized in that a hydrophilic polymer contained therein is applied and crosslinked to form a dye transfer preventing layer, and a hot-melt adhesive is further applied on the dye transfer preventing layer. Method.