JPH0839994A - Transfer material - Google Patents

Abstract

(57) [Summary] [Structure] On the substrate layer (1), a surface treatment layer (2), a release layer (3), a protective layer, a pattern layer (6) and an adhesive layer (7).
And the release layer (3) is composed of a photopolymerizable resin layer, and the protective layer is a first layer composed of a photopolymerizable resin and a solvent drying type resin ( 4) and a second layer (5) composed of a solvent drying type resin. [Effect] Surface hardness, abrasion resistance, and interlayer adhesion are greatly improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer material. More specifically, the present invention relates to a new transfer material which is also useful in in-mold molding and has excellent adhesiveness as well as releasability and good surface hardness after transfer.

[0002]

2. Description of the Related Art The transfer method is a technique which is widely used as a method for forming patterns on the surface of various base materials.
Various transfer materials have been devised so far in order to obtain a paint with excellent surface abrasion resistance. However, conventional transfer materials have insufficient physical properties such as abrasion resistance, damage resistance, chemical resistance, solvent resistance, and heat resistance of the pattern layer formed by transfer, and thus damage to the pattern layer and long-term It may cause discoloration or the like when left unattended. Therefore, in order to eliminate such a defect, a transfer material has been developed in which an ultraviolet curable resin layer or a thermosetting resin layer is formed in the uppermost layer after transfer.

However, even with such an improved transfer material, there are problems in that the abrasion resistance and hardness of the surface are not sufficient, the interlayer adhesion strength is lowered, and printability failure occurs. . In order to eliminate these drawbacks, the release layer which becomes the surface layer after transfer, the structure of the release layer and the pattern layer and the adhesive layer, their composition, etc. have been studied, but they are practically satisfactory at present. Things are not realized.

Therefore, the present invention solves the problems as described above, solves the drawbacks of the prior art, and provides a new transfer material which is excellent in surface hardness and surface abrasion resistance and has good interlayer adhesion. Has an aim.

[0005]

In order to solve the above problems, the present invention provides a surface treatment layer, a release layer, a protective layer, a pattern layer and an adhesive layer on a base material layer made of a sheet or a film. And the release layer comprises a photopolymerizable resin layer, the protective layer comprises a first layer comprising a photopolymerizable resin and a solvent drying type resin, and a solvent drying layer. And a second layer made of a mold resin, wherein the release layer forms a surface layer after the transfer.

[0006]

That is, according to the present invention, a photopolymerizable resin is used for a release layer which becomes a surface layer after transfer, and as a protective layer thereon, a first layer comprising a photopolymerizable resin and a solvent drying type resin is used. Layer-It is characterized by using a second layer made of solvent-drying resin.

FIG. 1 is a sectional view showing an example of the transfer material of the present invention. For the base material layer (1), a sheet or film of a single or blend of plastics such as polyester, polypropylene, polyethylene, nylon, cellophane as a sheet or film is used. The thickness is
In the case of general transfer, it is preferably set to about 20 to 40 μm, and when used in in-mold transfer, it is preferably set to about 25 to 50 μm.

Next, a surface treatment layer (2) is formed to impart releasability. As for the surface-treated layer (2), when the releasability of the base material layer (1) is insufficient, the surface-treated layer (2) withstands heat and pressure during transfer and is releasable to the base material layer (1). ,
In particular, it imparts releasability on a cubic curved surface. Acrylic resin,
Cellulosic resin, vinyl chloride resin, polyester resin, chlorinated rubber resin, styrene resin, urethane resin, polyamide resin, melamine resin, urea resin, epoxy resin, etc. Use the mixture.

As the release layer (3), a surface layer after transfer is formed, and a UV-curable urethane acrylate resin or epoxy acrylate resin is used. For the release layer (3), it is preferable to use an additive such as wax or silicone in order to enhance the release property and the surface slip property after transfer. Regarding the protective layer, first, a mixture of an ultraviolet curable resin and a solvent drying type resin is used as the first layer (4).

The mixing ratio of the ultraviolet curable resin is 30% to 7
0%, more preferably 40% to 60%, and if less than 30% or more than 70%, poor interlayer adhesion results. As the ultraviolet curable resin, urethane acrylate resin,
Epoxy acrylate resin is used, and as the solvent-drying type resin, acrylic resin, vinyl chloride resin, chlorinated rubber resin, styrene resin, urethane resin, polyamide resin, epoxy resin alone or a mixture is used. . This first layer ensures interlayer adhesion between the second protective layer and the release layer, which will be described next.

The second layer (5) mediates the interlayer adhesion between the first layer (4) and the solvent-drying type pattern of a normal ink type and the adhesive layer, and is made of an acrylic resin or vinyl chloride resin. A polyester resin, an epoxy resin, a urethane resin, or a mixture of two or more of the first protective layer,
Use one that has adhesion to the picture layer and adhesive layer. The pattern layer (6) is formed by an ordinary printing method (gravure printing, silk screen printing, etc.) with the ink used for a normal transfer agent.

Vehicles used in the ink include acrylic resin, vinyl chloride resin, vinyl chloride vinyl acetate copolymer resin, chlorinated rubber resin, ethylene vinyl acetate copolymer resin, urethane resin, etc. There is. The adhesive layer (7) is an adhesive used for a normal transfer material, has adhesiveness when heated, and adheres to a transfer target.

Acrylic resin, urethane resin, polyester resin, vinyl chloride resin, vinyl chloride vinyl acetate copolymer resin, chlorinated polyolefin resin, ethylene vinyl acetate copolymer resin, etc. It is selected and used according to the material. With the above layer structure, the surface hardness and surface abrasion resistance after transfer as the transfer material are greatly improved, and the interlayer adhesiveness is also improved.

The present invention will be described in more detail below with reference to examples.

[0015]

Example 1 A transfer material was manufactured so as to have the thickness shown in FIG. The compositional composition of each layer at this time was as follows. Release layer (3) Epoxy acrylate prepolymer 20 Trimethylolpropane triacrylate 40 Methyl ethyl ketone 18 Toluene 20 Photoinitiator 2% First protective layer (4) Epoxy acrylate prepolymer 10 Trimethylolpropane triacrylate 10 Polymethylmethacrylic Acid ester 20 Methyl ethyl ketone 28 Toluene 30 Photopolymerization initiator 2% Second protective layer (5) Polyacrylic acid ester 20 Methyl ethyl ketone 40 Toluene 40 The surface hardness and surface abrasion resistance of the transferred product are excellent, and the pencil hardness is 3H and steel. Wool (# 0000) was not scratched.

The interlayer adhesion was also sufficient. Example 2 In Example 1, a layer was formed instead of the following composition, and an excellent effect was similarly obtained. Release layer (3) Epoxy acrylate prepolymer 50 Methyl ethyl ketone 25 Toluene 23 Photopolymerization initiator 2% First protective layer (4) Epoxy acrylate prepolymer 20 Polymethylmethacrylate 20 Methylethylketone 30 Toluene 28 Photopolymerization initiator 2 % Example 3 In Example 1, the release layer was a single layer, but the same resin composition was used to form multiple layers to increase the thickness. It was found that the surface hardness (pencil hardness) of the transferred product was improved.

The results are as follows. Release layer layer Thick pencil hardness Sample-1 1 layer 2μ 3H Sample-2 2 layers 4μ 4H Sample-3 4 layers 8μ 5H

[0018]

As described in detail above, according to the present invention, the surface hardness, abrasion resistance and interlayer adhesion of the transfer material after transfer are greatly improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the structure of a transfer material according to the present invention.

FIG. 2 is a sectional view showing an example.

[Explanation of reference numerals] 1 base material layer 2 surface treatment layer 3 release layer 4 first protective layer 5 second protective layer 6 picture layer 7 adhesive layer

Claims (3)

[Claims] 1. A transfer material in which a surface treatment layer, a release layer, a protective layer, a pattern layer and an adhesive layer are sequentially laminated on a base material layer made of a sheet or a film, wherein the release layer. Is a photopolymerizable resin layer, and the protective layer is composed of a first layer made of a photopolymerizable resin and a solvent drying type resin and a second layer made of a solvent drying type resin. A transfer material, wherein the release layer forms a surface layer. 2. The transfer material according to claim 1, wherein the first layer of the protective layer contains 30 to 70% by weight of the photopolymerizable resin. 3. The transfer material according to claim 1, wherein the release layer is formed of a plurality of layers.