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A preparation method of digital inkjet printing water transfer printing film, water transfer printing film and water transfer printing method

A water transfer film, digital inkjet technology, applied in the copy/marking method, transfer ink from the original, chemical instruments and methods, etc., can solve the problem that the PVA film cannot be directly digitally inkjetted, etc., to prevent disorder. Diffusion, high speed, the effect of shortening the process flow

Active Publication Date: 2021-07-23
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the PVA film cannot be directly used for digital inkjet due to its softness in the process of water transfer printing and solve the above-mentioned universality of oily and water-based digital inkjet printing, the present invention discloses a water transfer printing film for digital inkjet printing. The preparation method is suitable for oily and water-based inkjet printing, and its specific technical scheme is as follows:

Method used

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  • A preparation method of digital inkjet printing water transfer printing film, water transfer printing film and water transfer printing method
  • A preparation method of digital inkjet printing water transfer printing film, water transfer printing film and water transfer printing method
  • A preparation method of digital inkjet printing water transfer printing film, water transfer printing film and water transfer printing method

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Effect test

Embodiment 1

[0040] A preparation method of a digital inkjet printing water transfer film, comprising the steps of:

[0041] The first step, prepare the water transfer film, a, thermally press one layer of PET film on the surface of one side of the paper; b, coat one layer of PVA aqueous solution on the side of the PET film to form a PVA film; c, adjust the paper and Humidity of PVA film and heat-pressed leveling paper, then on the side of PVA film, coat one deck polyurethane varnish to form polyurethane varnish layer; d, adjust paper and PVA film humidity and heat-pressed leveling paper;

[0042] In the second step, the image layer is printed, and the image to be transferred is mirror-reversed through the computer, and the reversed image is printed on the polyurethane varnish layer by inkjet printing.

[0043] In the preparation process of the above-mentioned water transfer film, the paper can make the PVA film have the hardness required by the digital inkjet during the digital inkjet pro...

Embodiment 2

[0049] The difference from Example 1 is that the content of each component of the PVA aqueous solution is further preferred, and the proportions are as follows by mass fraction: 18.5% of PVA-1788, 0.9% of soluble starch, 0.4% of glycerin, and 0.3% of non-ionic surface Active agent, 0.01% borax, 0.1% defoamer, the rest is water. The PVA-1788 refers to polyvinyl alcohol with a degree of polymerization of 1700 and a degree of alcoholysis of 88%.

Embodiment 3

[0051] For the humidity adjustment part of step c and step d in embodiment 1, a plurality of experimental groups are set up, so that the water content of the PVA film after two humidity adjustments is different, so as to verify the influence of the water content of the PVA film on the transfer. Select part of the test data and get the results shown in the following table:

[0052] Moisture content of basement film (%) Flatness of basement membrane Curl rate of transfer base film (%) Transfer suitability 2.3 poor 38 The pattern is greatly deformed 2.8 poor 32 Distorted, blurred pattern 3.5 basically no deformation 15 The pattern is clear and there is no deformation 4.2 no deformation 11 The pattern is clear and there is no deformation 10.3 Severely deformed 45 cannot transfer 12.7 Severely deformed 57 cannot transfer

[0053] The curl rate is the ratio of the area of ​​the base film that does not float on ...

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Abstract

The invention discloses a method for preparing a water transfer printing film for digital inkjet printing, comprising the following steps: the first step, preparing the water transfer printing film, a, hot-pressing a layer of PET film on the surface of one side of the paper; b 1. Coating one deck of PVA aqueous solution on the side of the PET film to form a PVA film; c, adjusting the humidity of the paper and the PVA film and hot pressing the flat paper, and then coating one deck of polyurethane varnish on the side of the PVA film to form a polyurethane varnish layer ; d, adjust the humidity of the paper and the PVA film and heat-press the flat paper; the second step, print the image layer, use the computer to mirror the image that needs to be transferred, and print the inverted image to the polyurethane by inkjet printing on top of the varnish. The invention gets rid of complex processes such as plate making and printing required by traditional water transfer printing, so that the PVA film can be adapted to inkjet printing. The invention also discloses a digital inkjet ink transfer printing film and a water transfer printing method.

Description

technical field [0001] The invention relates to the technical field of water transfer printing, in particular to a preparation method of a digital inkjet printing water transfer printing film, a water transfer printing film and a water transfer printing method. Background technique [0002] Water transfer printing technology is widely used in the printing of non-planar objects, such as the printing of car steering wheels, welcome pedals, car interior parts, baby carriages, toys and craft decorations. The traditional water transfer printing process first prepares a polyvinyl alcohol (PVA) water-soluble film, and then prints the pattern on the PVA film by gravure printing, and then performs water transfer printing. Since the PVA film is very soft, it cannot be directly printed with digital inkjet, so gravure printing or silk screen printing is required. In the printing process, a gravure or screen version needs to be produced; and the PVA film has a high tensile strength, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41M5/025B41M5/00B41M5/50B41M5/52B32B27/10B32B27/36B32B29/00B32B33/00C09D129/04C09D103/02C09D7/61C09D7/63C09D175/04C09D127/06
CPCB32B27/10B32B27/36B32B29/002B32B33/00B32B2255/10B32B2255/26B41M5/0047B41M5/025B41M5/502B41M5/5209B41M5/5281C08K2003/387C09D129/04C09D175/04C09D7/61C09D7/63C08L3/02C08K3/38C08K5/053C08L27/06
Inventor 张继德汤广聪梁求城周登齐邝山喜
Owner HUNAN UNIV OF TECH
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