Method for further curing adhesive layer of transfer printing film subjected to transfer printing

Abstract

A method for ultraviolet curing an adhesive layer in a thermal transfer film is disclosed. The method includes the following steps: sticking the adhesive layer on a surface of printing stock through heating and pressurizing; peeling a carrier layer in the thermal transfer film to transfer an image layer in the thermal transfer film onto the surface of printing stock; and further curing the adhesive layer by subjecting to an ultraviolet radiation. The adhesive layer comprises prepolymer, reactive diluents, resin, curing agent and additives. The curing agent comprises cationic photoinitiator and free-radical photoinitiator. This method has the advantage of good curing effect, improved adhesive performance, lower curing shrinkage rate and excellent image surface smoothness.

Description

Technical field

[0001] The present invention relates to a curing method, in particular to a curing method of a transfer printing film containing an ultraviolet light curing adhesive transfer printing film, and more particularly to a further curing method of an adhesive layer after transfer of the UV curing adhesive transfer printing film. Background technique

[0002] The traditional thermal transfer printing film generally includes a carrier film, a graphic decoration layer and an adhesive layer. When transferring, through the action of heat and pressure, the adhesive force of the adhesive layer is used to make the graphic decoration layer separated from the carrier film and transferred to the substrate. 物surface. In traditional thermal transfer printing films, the adhesive layer is usually a hot-melt adhesive layer. Because the hot-melt adhesive has the characteristics of being repeated when heated, for some special products, such as certain substrate products that need high tem...

Examples

Embodiment 1

[0024] 1. Preparation of printing film

[0025] figure 1 It is the first printing film of the present invention. The top layer of the printing film is the base film 1, the second layer is the acrylic resin layer 2, the third layer is the printing ink layer 3, 3', and the fourth layer is the adhesive layer 4. The production process is as follows: using a gravure printing machine or a coating machine, an acrylic resin layer is applied to the surface of a base film as a release protection layer, and a pre-designed decorative image is printed on the acrylic resin layer with ink (mainly yellow) Text, use the gravure printing machine to directly print the adhesive on the graphic layer or coat the adhesive on the coating machine, rewind, slit and package the finished product.

[0026] The adhesive layer uses the following formula:

[0027] Epoxy resin 40%

[0028] Polyester acrylate resin 25%

[0029] TPGDA 10% produced by Sartomer

[0030] Cationic initiator produced by Ciba, USA 2617%

[003...

Embodiment 2

[0043] 1. Preparation of printing film

[0044] figure 2 It is another printing film of the present invention. The top layer of the printing film is base film 1, the second layer is acrylic resin layer 2, the third layer is printing ink layer 3, the fourth layer is aluminum plating layer 5, and the fifth layer is Adhesive layer 4. The production process is as follows: using a gravure printing machine or a coating machine, an acrylic resin layer is applied to the surface of a base film as a release protection layer, and a pre-designed decorative image is printed on the acrylic resin layer with ink (mainly yellow) In the text, the graphic layer is vacuum-plated with aluminum, and then the adhesive is directly printed on the aluminum-plated layer with a gravure printing machine or the adhesive is coated on the coating machine, and the finished product is wound, slit, and packaged.

[0045] The adhesive layer uses the following formula:

[0046] Vinyl resin 40%

[0047] Polyurethane ac...

Technical field

[0001] The present invention relates to a curing method, in particular to a curing method of a transfer printing film containing an ultraviolet light curing adhesive transfer printing film, and more particularly to a further curing method of an adhesive layer after transfer of the UV curing adhesive transfer printing film. Background technique

[0002] The traditional thermal transfer printing film generally includes a carrier film, a graphic decoration layer and an adhesive layer. When transferring, through the action of heat and pressure, the adhesive force of the adhesive layer is used to make the graphic decoration layer separated from the carrier film and transferred to the substrate. 物surface. In traditional thermal transfer printing films, the adhesive layer is usually a hot-melt adhesive layer. Because the hot-melt adhesive has the characteristics of being repeated when heated, for some special products, such as certain substrate products that need high tem...

Examples

Embodiment 1

[0024] 1. Preparation of printing film

[0025] figure 1 It is the first printing film of the present invention. The top layer of the printing film is the base film 1, the second layer is the acrylic resin layer 2, the third layer is the printing ink layer 3, 3', and the fourth layer is the adhesive layer 4. The production process is as follows: using a gravure printing machine or a coating machine, an acrylic resin layer is applied to the surface of a base film as a release protection layer, and a pre-designed decorative image is printed on the acrylic resin layer with ink (mainly yellow) Text, use the gravure printing machine to directly print the adhesive on the graphic layer or coat the adhesive on the coating machine, rewind, slit and package the finished product.

[0026] The adhesive layer uses the following formula:

[0027] Epoxy resin 40%

[0028] Polyester acrylate resin 25%

[0029] TPGDA 10% produced by Sartomer

[0030] Cationic initiator produced by Ciba, USA 2617%

[003...

Embodiment 2

[0043] 1. Preparation of printing film

[0044] figure 2 It is another printing film of the present invention. The top layer of the printing film is base film 1, the second layer is acrylic resin layer 2, the third layer is printing ink layer 3, the fourth layer is aluminum plating layer 5, and the fifth layer is Adhesive layer 4. The production process is as follows: using a gravure printing machine or a coating machine, an acrylic resin layer is applied to the surface of a base film as a release protection layer, and a pre-designed decorative image is printed on the acrylic resin layer with ink (mainly yellow) In the text, the graphic layer is vacuum-plated with aluminum, and then the adhesive is directly printed on the aluminum-plated layer with a gravure printing machine or the adhesive is coated on the coating machine, and the finished product is wound, slit, and packaged.

[0045] The adhesive layer uses the following formula:

[0046] Vinyl resin 40%

[0047] Polyurethane ac...

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