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Manufacturing process for heat transfer film

A manufacturing process, heat transfer film technology, applied in the field of packaging materials to achieve excellent composite fastness, excellent flexibility, and rich printing patterns.

Inactive Publication Date: 2016-04-13
丹阳市华兴纸箱有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high technical content of the process, many materials need to be imported

Method used

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  • Manufacturing process for heat transfer film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A heat transfer film manufacturing process, the steps comprising:

[0019] (1) Preparation of raw materials: prepare raw materials including substrate film, release agent, ink, adhesive, the substrate film is made of PET, the adhesive is hot melt adhesive, and the solid content of the release agent is controlled at 20%;

[0020] (2) Unwinding: Place the substrate film in the center of the unwinding shaft of the gravure printing machine, pass through the middle of the embossing roller and the printing plate cylinder, and then pass through the constant tension traction roller and enter the winding shaft;

[0021] (3) Coating release agent: first prepare the release agent, pour it into the coating tank and stir evenly, start the gravure printing machine to coat, and the coated substrate film is dried on the drying device, and the release agent The thickness of the agent coating is controlled at 4um, and the drying temperature is 80°C;

[0022] (4) Coating ink: pass the su...

Embodiment 2

[0026] A heat transfer film manufacturing process, the steps comprising:

[0027] (1) Preparation of raw materials: Prepare raw materials including substrate film, release agent, ink, and adhesive. The substrate film is made of PET, the adhesive is hot-melt adhesive, and the solid content of the release agent is controlled at 23%;

[0028] (2) Unwinding: Place the substrate film in the center of the unwinding shaft of the gravure printing machine, pass through the middle of the embossing roller and the printing plate cylinder, and then pass through the constant tension traction roller and enter the winding shaft;

[0029] (3) Coating release agent: first prepare the release agent, pour it into the coating tank and stir evenly, start the gravure printing machine to coat, and the coated substrate film is dried on the drying device, and the release agent The thickness of the agent coating is controlled at 5um, and the drying temperature is 90°C;

[0030] (4) Coating ink: pass th...

Embodiment 3

[0034] A heat transfer film manufacturing process, the steps comprising:

[0035] (1) Preparation of raw materials: Prepare raw materials including substrate film, release agent, ink, and adhesive. The substrate film is made of PET, the adhesive is hot-melt adhesive, and the solid content of the release agent is controlled at 25%;

[0036] (2) Unwinding: Place the substrate film in the center of the unwinding shaft of the gravure printing machine, pass through the middle of the embossing roller and the printing plate cylinder, and then pass through the constant tension traction roller and enter the winding shaft;

[0037] (3) Coating release agent: first prepare the release agent, pour it into the coating tank and stir evenly, start the gravure printing machine to coat, and the coated substrate film is dried on the drying device, and the release agent The thickness of the agent coating is controlled at 7um, and the drying temperature is 100°C;

[0038] (4) Coating ink: pass t...

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Abstract

The invention discloses a manufacturing process for a heat transfer film. The manufacturing process comprises the steps of preparing a raw material, unreeling, coating a mold releasing agent, coating printing ink and coating glue agent. Polyethylene terephthalate (PET) is selected for a raw material substrate thin film which has the characteristics of being good in dimensional stability, uniform in tension and good in heat-resisting effect and mold releasing property. The solid content of the mold releasing agent is controlled to be 20%-25%, so that the defect that the volatile speed of solvent in the mold releasing agent is high and the drawback that the transferring effect is not obvious are overcome. Hot melt glue is selected for the glue agent, after the glue agent is coated and dried to form a film, the film texture is transparent, the surface where the mold releasing agent and the printing ink are coated has the excellent composite fastness and the distinguished flexibility, and the capacity of resisting friction, water, acid, alkali and other mediums is high. According to the transfer film produced through the process, multi-color patterns can be mapped at a time, color registering is not needed, layers of printed patterns are rich, and the color difference is small.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a heat transfer film manufacturing process. Background technique [0002] Thermal transfer printing is an emerging printing process, which has been introduced from abroad for more than 10 years. The printing method of this process is divided into two parts: transfer film printing and transfer printing processing. The transfer film printing adopts screen printing (resolution up to 300dpi), and the pattern is pre-printed on the surface of the film. The printed pattern is rich in layers, bright in color, and ever-changing. , small color difference, good reproducibility, can achieve the effect required by the designer, and is suitable for mass production; the transfer printing process transfers the exquisite pattern on the transfer film to the product through one-time processing (heating and pressing) of the heat transfer machine On the surface, the ink layer and the surface of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M5/382
Inventor 吉兴华
Owner 丹阳市华兴纸箱有限公司
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