JPH07314879A - Transfer printing sheet and its manufacture - Google Patents

Abstract

PURPOSE:To provide a transfer printing sheet with peripheral edges of a printed pattern not likely to be sticky at the time of transfer. CONSTITUTION:Printing is carried out in a given pattern on the surface of a protective sheet 1. A bonding agent 3 is applied in another pattern almost same as a printed pattern 2 on the surface of the printed pattern 2 which is printed in the given pattern. After that, a release sheet 4 is laminated on the bonding agent 3 so that the surface of the bonding agent 3 is covered completely. An area of the surface on the protective sheet 1 side of the printer pattern 2 is formed as the largest, while an area of the surface on the release sheet 4 side of the bonding agent 3 is formed as the smallest on the transfer printing sheet by the above-said area. Therefore, when the printed pattern 2 and the bonding agent 3 are applied to a body to be transferred, the bonding agent 3 is covered with the printed pattern 2 and scarcely protruded out on the peripheral edges of the printed pattern 2. The peripheral edges of the printed pattern 2, therefore, is provided with the effect of being not likely to be sticky by the arrangement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer printing sheet used for transferring a pattern such as a predetermined character or pattern onto a subject and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, as a transfer printing sheet, ones shown in FIGS. 1 and 2 have been used. FIG. 1 is a plan view of a transfer printing sheet, 1 is a protective sheet,
Reference numeral 2 is a pattern such as printed characters and designs. Figure 2
Is an end view of the center cross-section of this transfer printing sheet.
Is a protective sheet, 2 is a printing pattern, 3 is an adhesive represented by a pressure-sensitive adhesive for adhering the printing pattern to a subject, and 4 is a release sheet covering the adhesive.

This transfer printing sheet is transferred to a subject by the following method. That is, first, the release sheet 4
Is peeled off to expose the adhesive 3. Then, the three surfaces of the adhesive are adhered to the subject. After that, the protective sheet 1 is peeled off from the print pattern 2, and the print pattern 2 and the adhesive 3 are left on the subject, and the print pattern 2 is transferred. Therefore, the adhesive force (X) between the protective sheet 1 and the print pattern 2 surface and the adhesive force (Y) between the print pattern 2 and the adhesive 3
And the adhesive force (Z) between the adhesive 3 and the release sheet 4 have the following relationship. That is, there is a relation of Y>X> Z.

A method of manufacturing such a transfer printing sheet is as follows.
The following is disclosed in Japanese Patent Publication No. 2-48439 and Japanese Patent Publication No. 5-39795. That is, first, the pressure-sensitive adhesive 3 is printed on the release sheet 4 in the same pattern as the print pattern 2. Then, the print pattern 2 is printed on the pressure-sensitive adhesive 3. Then, the protective sheet 1 is laminated on the print pattern 2 to obtain a transfer print sheet.

However, this method has the following drawbacks. That is, when the pressure-sensitive adhesive 3 is printed or applied in a predetermined pattern, the adhesive 3 is printed or applied in a solution state. Therefore, the upper edge of the pattern formed by the adhesive 3 is slightly rounded and contracts inward due to the surface tension of the adhesive solution, and the area of the upper surface is slightly smaller than that of the accurate pattern. And this adhesive 3
The printing pattern 2 is printed on the reduced upper surface. Therefore, as shown in FIG. 3, the obtained transfer printing sheet is in a state in which the adhesive 3 spreads slightly outside the printing pattern 2.

When such a transfer printing sheet is transferred to a subject, a slight amount of the pressure sensitive adhesive 3 is exposed outside the peripheral edge of the print pattern 2. Therefore, when the print pattern 2 is touched with fingers, there is a drawback that the peripheral edge thereof is sticky.

[0007]

Therefore, according to the present invention, by manufacturing by a method which is completely opposite to the conventional manufacturing method, even if the transferred printing pattern is touched with fingers, the peripheral edge thereof is less sticky. It is intended to provide a transfer printing sheet.

[0008]

That is, according to the present invention, after printing a protective sheet surface with a predetermined pattern, a pattern substantially the same as the pattern is printed on the print surface printed with the predetermined pattern. The present invention relates to a method for producing a transfer printing sheet, which comprises laminating a release sheet on the adhesive after applying the adhesive, and a transfer printing sheet obtained by such a method.

As the protective sheet 1 used in the present invention,
Any conventional material can be used. However, the protective sheet 1 and the print pattern 2
It suffices only to select a material whose adhesive force (X) is less than the adhesive force (Y) between the print pattern 2 and the adhesive 3. Specific materials used as the protective sheet 1 include polyolefin, polyvinyl chloride, polyester, polyamide, polyurethane, polyimide,
Examples thereof include transparent films or sheets formed of a cellulose derivative, polyacetal or the like. The reason for using a transparent film or sheet is that the printed pattern 2 is visible through the protective sheet 1. Further, when the positioning mark 5 is printed together with the print pattern 2, the positioning mark 5 may also be visible through the protective sheet 1. Therefore, when it is not necessary to visually check the print pattern 2, or when the positioning mark 5 is printed on the surface opposite to the surface on which the print pattern 2 is printed separately from the print pattern 2, the opaque plastic is used. Film or sheet, opaque paper, metal foil, etc. may be used. The surface of the protective sheet 1 on which the print pattern 2 is printed is coated with an adhesive having a slight adhesive force (such an adhesive is referred to as “medium”). You can leave it. In this way, the protective sheet 1 and the release sheet 4 are lightly adhered and integrated in the non-existing portion of the print pattern 2, so that transfer printing can be performed during transportation before final use or during handling such as storage. This is preferable because the release sheet 4 is less likely to be released from the sheet.

A print pattern 2 is formed on one side of the protective sheet 1.
Is printed. As the printing ink for forming the printing pattern 2, any conventionally known printing ink can be used. However, even in this case, care should be taken so that the adhesive force (X) between the protective sheet 1 and the print pattern 2 does not become larger than the adhesive force (Y) between the print pattern 2 and the adhesive 3. When a protective sheet coated with a medium is used, X may be larger than Y. Therefore, in this case, the medium at the position where the print pattern 2 is printed is
It is preferable to remove it in advance. Specific examples of printing inks include colorant-non-blended inks, colorant-blended inks, UV-curable inks, electron beam-curable inks, and functional properties (conductivity, temperature indication, fluorescence, light storage, reflection). Sex, aromatic,
Ink or the like is used.

In order to print the printing ink on one side of the protective sheet 1, a conventionally known printing method such as screen printing is adopted. Then, the print pattern 2 is printed by the desired printing method. At this time, it is preferable to print the positioning mark 5 together with the print pattern 2 on one surface of the protective sheet 1. The positioning mark 5 serves as a reference when determining the transfer position when the transfer print sheet is transferred to the subject. With the positioning mark 5, the print pattern 2 can be accurately transferred to the transfer position. You can do it. The positioning mark 5 is preferably printed on the surface of the protective sheet 1 on which the print pattern 2 is printed. This is because when printing on the surface where the print pattern 2 is not printed, the print of the print pattern 2 and the positioning mark 5 are performed.
This is because the printing of must be performed separately. When the print pattern 2 is printed on the protective sheet 1, the protective sheet 1
When a matte transparent synthetic resin film is used, the printed pattern 2 to be transferred is also matted. That is, when the protective sheet 1 having a matte surface and a rough surface is used, the protective sheet 1
The surface of the print pattern 2 that has come into contact with is also roughened, and the transferred print pattern 2 is in a matte state. On the contrary, when a transparent synthetic resin film which is not matte and smooth is used as the protective sheet 1, the printed pattern 2 surface to be transferred is also smooth and not matted. Although the protective sheet 1 and the print pattern 2 are generally in direct contact in many cases, other inclusions may be present between the protective sheet 1 and the print pattern 2.

After the print pattern 2 is formed on one surface of the protective sheet 1, an adhesive is applied on the print surface of the print pattern 2. That is, the adhesive is applied in substantially the same pattern as the print pattern 2. This coating method is preferably performed by printing by the same method as the method of printing the print pattern 2. That is, when the print pattern 2 is screen printed, this screen printing plate is used to
It is preferable to print the adhesive on the printing surface of the printing pattern 2. As the adhesive, a pressure-sensitive adhesive is generally used, but a heat-sensitive adhesive, a rewettable adhesive or the like may be used. In addition, additives such as tackifiers, softening agents, antioxidants, fillers, vulcanizing agents, cross-linking agents, and coloring agents are added to the pressure-sensitive adhesive to the effect of arbitrarily changing its adhesive properties. You may.

As the pressure-sensitive adhesive, natural rubber, isoprene rubber, styrene-butadiene rubber, styrene-butadiene block copolymer, styrene-isoprene block copolymer, butyl rubber, polyisobutylene, silicone rubber, polyvinyl isobutyl ether, chloroprene Elastomers such as rubber, nitrile rubber, graft rubber and recycled rubber are used. Further, polymers or copolymers of α, β-ethylenically unsaturated compounds such as olefins (ethylene, propylene, butylene, etc.), styrene-based monomers (styrene, α-methylstyrene, vinyltoluene, etc.), acrylonitrile or methacrylic acid. Ronitrile,
Vinyl ester (vinyl acetate, vinyl propionate, etc.), vinyl ether (vinyl isobutyl ether, etc.)
Etc. are used. Furthermore, unsaturated carboxylic acid-based monomers,
For example, acrylic acid, methacrylic acid, their esters, hydroxyalkyl acrylate, hydroxyalkyl methacrylate, 1,6-hexanediol diacrylate, 1,4-butanediol diacrylate, trimethylolpropane triacrylate, pentaerythritol mono-or penta-. Polymers or copolymers of acrylate, crotonic acid or its ester, maleic acid, itaconic acid, citraconic acid, their esters or anhydrides and the like are used. Further, polymers or copolymers of compounds such as diallyl phthalate, divinylbenzene, acrylamide, methacrylamide, vinyl alcohol, vinyl chloride and epoxidized polybutadiene are used.

Among these pressure-sensitive adhesives, acrylic pressure-sensitive adhesives are preferably used, and particularly acrylic pressure-sensitive adhesives composed of the following copolymers are most preferably used. That is, acrylic acid ester or methacrylic acid ester (A) having an alkyl group having 4 to 12 carbon atoms, acrylic acid, methacrylic acid, crotonic acid,
Unsaturated carboxylic acids (B) such as maleic acid, maleic acid monoester, maleic anhydride, itaconic acid, itaconic acid monoester, itaconic anhydride, and acrylic acid ester or methacrylic acid ester having a short chain alkyl group,
It is most preferable to use an acrylic pressure-sensitive adhesive in which an unsaturated compound (C) such as hydroxyalkyl acrylate, hydroxyalkyl methacrylate, vinyl acetate or diallyl phthalate is copolymerized. This is because this acrylic pressure-sensitive adhesive is excellent in various properties such as adhesive property, weather resistance and transparency.

As the tackifier added to the pressure-sensitive adhesive, rosin, ester gum, ester gum H, polyterpene resin, petroleum resin, styrene resin, alkylphenol resin, terpene phenol resin, ethylene-vinyl acetate copolymer A united resin or the like can be used.

As the softening agent to be blended in the pressure-sensitive adhesive, various plasticizers, polybutene, liquid tackifiers, low polyisobutylene polymers, low polyvinyl isobutyl ether polymers, lanolin, depolymerization Polymerized rubber, process oil, vulcanized oil, etc. can be used.

As the filler mixed in the pressure-sensitive adhesive, titanium oxide, zinc white, silica, aluminum hydroxide, calcium carbonate, barium sulfate, clay, talc, mica, iron oxide, various rocks, starch Etc. can be used.

As the antiaging agent to be incorporated in the pressure sensitive adhesive, 2,6-di-t-butyl-4-methylphenol, 2,5-di-t-butylhydroquinone, mercaptobenzimidazole, 1,1-bis (4-hydroxyphenol) cyclohexane, phenyl-β-naphthylamine and the like can be used.

Further, in the pressure-sensitive adhesive, it is possible to add a certain kind of polymer such as a cellulose derivative, a phenol resin, a urea resin, a melamine resin, an epoxy resin, or a gelatin.

Further, a surfactant may be mixed and added to the pressure sensitive adhesive. As the surfactant, soap, alkyl sulfate, alkylbenzene sulfonate,
Anionic surfactants such as dialkyl sulfosuccinates, naphthalene sulfonates or polymers thereof, polyoxyethylene alkyl ether sulfonates, polyoxyethylene alkyl ether phosphates, polyoxyethylene alkyl ethers, polyoxy Nonionic surfactants such as ethylene alkylphenol ether, polyoxyethylene alkyl esters, block polymers of polyoxyethylene and polyoxypropylene, sorbitan monoalkylate, and cationic surfactants such as alkyltrimethylammonium chloride and quaternary ammonium. Agents can be used. Further, the surfactant mentioned here includes organic silicon compounds represented by various silicone oils represented by dialkylsiloxane structures such as epoxidized silicone oil and carboxy-modified silicone oil, and sulfonic acid containing a perfluoroalkyl group. Fluorine compounds represented by salts, carboxylic acid salts, trimethylammonium salts, phosphoric acid esters, oligomers thereof, and urethane derivatives are also included.

Particularly, as the surfactant, it is preferable to use a dialkyl sulfosuccinate, an organic silicon compound, a fluorine compound or the like. Then, the quantitative ratio of the surfactant is preferably 0.00001 to 20% by weight in the adhesive. The quantitative ratio of the surfactant is 0.0
When it is less than 0001% by weight, when the adhesive is printed on the printing surface of the print pattern 2, cissing or scumming may occur in the adhesive. Further, the quantitative ratio of the surfactant is 20.
If it exceeds the weight percentage, the surface tension of the adhesive is greatly reduced,
The adhesive printed on the print surface of the print pattern 2 may adhere to the side surface of the print pattern 2. Further, the adhesive force (Y) between the print pattern 2 and the adhesive 3 may be reduced.

After the adhesive 3 is applied and printed on the printing surface of the printing pattern 2 as described above, the release sheet 4 is laminated so that the upper surface of the adhesive 3 is completely covered. As the release sheet 4, a sheet, a metal foil, a plastic film or a sheet having one surface (the surface contacting the adhesive 3) treated with a release agent is generally used. In particular, a transparent plastic film or sheet is printed with a printed pattern 2
Can be seen from the side of the release sheet 4 and is preferably used. Examples of the treatment agent applied to one surface of the release sheet 4 include long-chain alkyl acrylate copolymers, long-chain alkyl vinyl ester copolymers, long-chain alkyl vinyl ether copolymers, long-chain alkyl acrylamide copolymers, long-chain alkyls. Allyl ester copolymer, long chain alkyl derivative of maleic acid, long chain alkyl esterified polymer, long chain alkyl carbamate polymer,
Polyethyleneimine derivatives, perfluorinated alkyl group-containing compounds (including fluororesins), silicones, paraffins and the like can be used. In addition, a plastic film or sheet itself formed of a material having releasability, or a plastic film or sheet to which a release agent is internally added at the time of production can be used.

In the transfer printing sheet obtained as described above, the release sheet 4 is first peeled off, and the adhesive 3 is brought into contact with the subject to bond them. Here, as a subject, generally any kind of material can be used, specifically, metal,
Plastics, bamboo trees, ceramics, paper, woven cloth,
Nonwoven fabric, leather, inorganic material, etc. can be adopted. Further, the surface of the pottery that has not yet been hardened to form a ceramic can be used as the subject. Then, after adhering to the subject, the protective sheet 1 is peeled off from the print pattern 2, whereby the print pattern 2 is transferred to the subject. The transfer printing sheet according to the present invention includes a protective sheet, a printing pattern,
Needless to say, it suffices that the adhesive and the release sheet are laminated in that order, and that other inclusions may be present between the layers.

[0024]

【Example】

Example First, as a protective sheet, an appli film (Mitsui Toatsu Co., Ltd., T-117, transparent plastic sheet) was prepared. Then, a printing pattern was printed by screen printing on one surface of the protective sheet using ink white for silk screen (Vinyl Gloss, manufactured by Tanaka Ink Chemical Co., Ltd.). At the same time, a positioning mark was printed with the same ink. Thereafter, a solvent-type acrylic pressure-sensitive adhesive (manufactured by Dainippon Ink and Chemicals Incorporated, Fine Tack SPS-1012, pressure-sensitive adhesive) is used as a main component on the surface of the printed pattern, and a silicone-based compound having a surface-active action is used. The adhesive added as an auxiliary agent is diluted with butyl cellosolve to the specified viscosity, and the same screen printing plate as before (however, the printing part of the positioning mark is filled with the adhesive, and the positioning mark surface is bonded The product was applied by printing using a screen printing plate (preventing the agent from being applied and printed), and then dried. Then, a release sheet (8E Ivory manufactured by Fuji Paper Co., Ltd.) was laminated so that the adhesive surface was completely covered. A transfer printing sheet was obtained as described above.

The release sheet of the transfer printing sheet was peeled off, and the transfer printing sheet was attached so that the adhesive surface of the transfer printing sheet abuts the surface of the stainless steel plate which is the subject. Then, the protective sheet was peeled off, and the printing pattern was transferred while leaving the printing pattern on the surface of the stainless steel plate. When the print pattern on the transfer surface thus obtained was touched with fingers, no tackiness was felt at the peripheral portion of the print pattern.

Comparative Example First, 8E ivory manufactured by Fuji Paper Co., Ltd. was prepared as a release sheet. On the release-treated surface of this release sheet, a solvent-type acrylic pressure-sensitive adhesive (manufactured by Dainippon Ink and Chemicals, Inc., Fine Tack SPS-1012, pressure-sensitive adhesive)
Is used as a main agent, and an adhesive obtained by adding a silicone compound having a surface-active effect as an auxiliary agent is diluted with butyl cellosolve to a predetermined viscosity, and screen-printed so that it has the same pattern as the printing pattern. did. Then, using the same screen printing plate as the one that printed the adhesive, using ink white for silk screen (Tanaka Ink Chemical Co., Ltd., vinyl gloss), print on the adhesive and print pattern. Printed. Then, the application film is laminated so that the adhesive surface of the application film coated with a pressure-sensitive adhesive having a slight adhesiveness on one side contacts the printing pattern and the printing pattern is completely covered. did. A transfer printing sheet was obtained as described above.

The release sheet of the transfer printing sheet was peeled off, and the transfer printing sheet was attached so that the adhesive surface of the transfer printing sheet abuts on the surface of the stainless steel plate which is the subject. Then, the protective sheet was peeled off, and the printing pattern was transferred while leaving the printing pattern on the surface of the stainless steel plate. When the print pattern on the transfer surface thus obtained was touched with fingers, tackiness and stickiness were felt at the peripheral edge of the print pattern.

[0028]

The manufacturing method of the transfer printing sheet according to the present invention is completely opposite to the conventional manufacturing method. Printing is performed on the surface of the protective sheet to obtain a printing pattern, and then an adhesive is applied on the printing surface of this printing pattern. Is applied by printing. Therefore, due to the viscosity and surface tension of the printing ink, the printed pattern has a smaller area on the surface not in contact with the protective sheet than on the surface on the protective sheet side. Similarly, the area of the adhesive is smaller on the surface not in contact with the print pattern than on the surface on the print pattern side.
This is illustrated in FIG. That is, the area of the surface of the print pattern on the protective sheet side is the largest, and the area of the surface of the adhesive on the release sheet side is the smallest. On the other hand, in the case of the conventional manufacturing method, the reverse is the case, and as shown in FIG. 3, the surface area of the print pattern on the protective sheet side is the smallest and the surface area of the adhesive on the release sheet side is the largest. It will be.

[0029]

Therefore, when the transfer printing sheet according to the present invention is used to transfer the print pattern to the subject, the adhesive agent for adhering the subject and the print pattern is substantially covered with the print pattern. Becomes Therefore, the adhesive is less likely to stick out from the peripheral edge of the print pattern, and even if the peripheral edge of the print pattern is touched with a finger, the adhesiveness is less felt and stickiness is reduced.

Further, when the positioning mark is printed on the protective sheet of the transfer printing sheet according to the present invention, the transfer position can be accurately determined, and a shift may occur during transfer. The effect is small. In addition,
Since the positioning mark is printed on the protective sheet, it is removed after transfer and does not hinder transfer printing.

Further, when the print pattern is screen-printed, the surface of the print pattern on the adhesive side shows a mesh by the screen, but the surface of the print pattern on the side of the protective sheet hardly shows the mesh by the screen. Therefore,
When this print pattern is transferred to the subject, almost no mesh appears on the print pattern surface. Therefore, when such a transfer printing sheet is used and transferred to a subject, the transferred printing pattern has the appearance of offset printing. Therefore, when the transfer printing sheet according to the present invention is used, the transferred print pattern has an effect of giving an appearance as if it were offset printed.

[Brief description of drawings]

FIG. 1 is a plan view of a conventional transfer printing sheet.

FIG. 2 is a cross-sectional end view of a center of a conventional transfer printing sheet.

FIG. 3 is a partially enlarged cross-sectional end view of a conventional transfer printing sheet.

FIG. 4 is a partially enlarged cross-sectional end view of a transfer printing sheet according to an example of the present invention.

FIG. 5 is a plan view of a transfer printing sheet according to an example of the present invention.

[Explanation of symbols]

 1 Protective sheet 2 Printing pattern 3 Adhesive 4 Release sheet 5 Positioning mark

Claims (6)

[Claims] 1. A protective sheet having a predetermined pattern printed thereon, wherein an adhesive is applied in a substantially identical pattern on the pattern printing, and a release sheet is further laminated on the adhesive. Transfer printing sheet. 2. The transfer printing sheet according to claim 1, wherein a positioning mark is printed on the protective sheet together with a predetermined pattern printing, and an adhesive is not applied on the positioning mark. 3. The transfer printing sheet according to claim 1, wherein a medium is applied to a non-printed portion of the protective sheet. 4. After printing on the surface of the protective sheet with a predetermined pattern, on the printing surface printed with the predetermined pattern,
After applying the adhesive in a pattern substantially the same as the pattern,
A method for producing a transfer printing sheet, which comprises laminating a release sheet on an adhesive. 5. A printing method in which a protective sheet is printed with a predetermined pattern and a positioning mark is printed, and then the printing surface of the positioning mark is printed with the predetermined pattern without applying an adhesive. A method for producing a transfer printing sheet, comprising applying an adhesive on a surface in a pattern substantially the same as the pattern, and then laminating a release sheet on the adhesive. 6. A protective sheet to which a medium is applied is used, and before printing the protective sheet with a predetermined pattern, the medium at the portion where the pattern is printed is removed. 4. The method for producing a transfer printing sheet according to 4 or 5.