Film-transferring printing method

A printing method and a film transfer technology, which are applied in printing, printing process, ink transfer from original manuscript, etc., can solve the problem that the effective transfer of printing ink layer and aluminum spray layer cannot be satisfied, the peeling effect of the layer is greatly affected, and the color of the printed matter cannot be solved. Solve problems such as low saturation, achieve effective peeling and transfer, bright and elegant printed products, and strong metal texture

Inactive Publication Date: 2008-03-26
SHENZHEN JINJIA GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although this process uses an indirect printing method, that is, thermal transfer printing, it has great limitations due to the influence of production equipment, materials, environmental protection, efficiency and cost:
[0009] 1. Limited to the use of sublimation inks, the color saturation of printed products is very low;
[0010] 2. The temperature change has a great influence on the peeling effect of the layer;
The heat transfer machine has slow production speed, low efficiency and high production cost
[0012] 4. Production requires a temperature of 200-230°C, which consumes a lot of energy and is dangerous to operators
[0014] 1. For the common release layer material used in the transfer film, the aluminum spray layer is only in contact with the release layer, which can effectively peel off the aluminum spray layer, but there is a relatively thick ink layer between the two, which cannot meet the printing requirements. Effective peeling of ink layer
[0015] 2. The ordinary water-based transfer glue used in the transfer film can peel off the aluminum-sprayed layer from the release material, but because there is a thicker ink layer on the aluminum-sprayed layer, it cannot meet the requirements of the printing ink layer and the aluminum-sprayed layer at the same time. Efficient transfer from release layer

Method used

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  • Film-transferring printing method

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Effect test

Embodiment 1

[0032] Embodiment one, the film transfer printing technological process of common effect:

[0033] This embodiment selects PET film as the base film, and the thickness is controlled between 20-35um. Among polyester films, the stretchability of PET film is relatively stable, which is conducive to tension control during printing, molding and transfer, and reduces the tension of the film. The effect of stretch deformation on printed graphics. First, one side of the film is coated with a layer of release material by a coating machine (in-line coating can also be performed by using a gravure printing unit). The main components of the release layer material are silicon dioxide and methylhydrazone acetaldehyde, the pH value is 7-8, the solid content is 45±2%, and the viscosity in the Tu 4# cup is 25-40 seconds. As shown in Figure 1, the PET film 1 coated with the release layer is installed on the gravure printing machine, wherein 11 is the coating surface, and the pattern is copied ...

Embodiment 2

[0035] Embodiment 2, process flow of film transfer printing with photosilver effect:

[0036] In this embodiment, PET film is selected as the base film, and the PET film is controlled between 20-35um. First, one side of the film is coated with a layer of release material by a coating machine (in-line coating can also be performed by using a gravure printing unit). The main components of the release layer material are silicon dioxide and methylhydrazone acetaldehyde, the pH value is 7-8, the solid content is 45±2%, and the viscosity in the Tu 4# cup is 25-40 seconds. Then as shown in Figure 1, the PET film 1 coated with the release layer is installed on the gravure printing machine, wherein 11 is the coating surface, and the pattern is reproduced on the film through multiple groups of gravure printing units 3 and drying units 4 and then Drying is achieved, and finally the winding device 5 performs winding to make a transfer film 6 with complete graphic information. As shown i...

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Abstract

The film transfer printing process includes the following steps: 1. painting polyethylene terephthalate (PET) film with strippable layer of silica and methyl hydrazone acetaldehyde and in pH 7-8, solid content of 45+ / -2 % and proper viscosity; 2. printing graphic context on the PET film with intaglio printing or flexible plate printing ink; 3. painting water soluble glue of vinyl acetate-ethylene emulsion and in pH 8-10, solid content of 52+ / -2 % and proper viscosity; and 4. compounding the PET film to paper material and stripping to transfer the printed graphic context onto the paper material. The present invention can strip and transfer the printed ink layer effectively to obtain printed matter with strong metal texture in less influence of the paper quality on the printed matter quality.

Description

technical field [0001] The present invention relates to a printing process, in particular to a transfer printing process. Background technique [0002] In the traditional printing process, the ink dries directly on the surface of the paper substrate. Due to the flatness of the paper and the influence of the surface absorption of the paper, it is not conducive to the leveling of the ink. If the ink absorption ability of the paper is too strong, it will lead to print defects such as powdering of the imprint, low gloss, print through, reduced ink layer density, and change in hue. Therefore, for printed matters with high requirements for color and tone reproducibility, one method is to use plastic film composite paper such as OPP or PET for printing. The disadvantage of this process is that the plastic film is a non-degradable material, which will pollute the environment and is not conducive to environmental protection. Another way is to use UV (ultraviolet light) to irradiat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41M3/12B41M5/06B44C1/175
Inventor 庄德智
Owner SHENZHEN JINJIA GRP
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