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A fast-drying sublimation transfer paper and its preparation method, coating composition and microporous ink-absorbing swelling coating constructed in cooperation with it

A composition and coating technology, applied in the direction of paper coating, printing and coating of special varieties of printed matter, can solve the problems of low transfer rate, slow drying speed of ink, complicated production operation, etc., achieve simple production operation, avoid paper The effect of wrinkling, eliminating paper wrinkling

Active Publication Date: 2020-12-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, by adjusting a single paint formula and then coating, a certain effect of quick drying of the ink can be achieved, but it is difficult to achieve 0 second drying of the ink on the surface of the paper, and there is a disadvantage of reduced ink transfer rate; through multi-layer functional coating The design and application of layer structure to prepare quick-drying thermal transfer paper, the production operation is relatively complicated, most of the raw materials need to be modified, and the overall cost is high; at the same time, in the prior art, the solid content of the prepared coating is generally low, Coating on the surface of low grammage base paper is easy to cause the end of the coating process to break, and the paper is seriously deformed. The prepared thermal transfer paper has obvious print-through during the application process, and the drying speed of the ink is slow, causing the ink to stay on the paper surface for a long time. Cause severe wrinkling or deformation, affecting printing speed and printing quality
[0004] Therefore, a coating composition for preparing fast-drying thermal sublimation transfer paper, fast-drying thermal sublimation transfer paper and its preparation method have been developed, which are used to solve the problems in the preparation of thermal sublimation transfer paper in the prior art. Technical defects such as complex raw material handling, cumbersome production operations, slow ink drying speed, low transfer rate and inability to apply to low-gram weight base paper have become problems to be solved urgently by those skilled in the art.

Method used

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  • A fast-drying sublimation transfer paper and its preparation method, coating composition and microporous ink-absorbing swelling coating constructed in cooperation with it

Examples

Experimental program
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preparation example Construction

[0021] The preparation method of the fast-drying sublimation transfer paper 110 of the present invention, its steps are as follows:

[0022] (1) Provide the initial base paper 100 .

[0023] (2) Prepare a coating composition, disperse the pigment at a high speed of 2000r / min for 30 minutes, add the expansion adhesive and bio-based powder, and stir at 1000r / min for 30 minutes to obtain a coating composition.

[0024] (3) Coating the coating composition on the surface of the base paper 100 and drying to obtain the microporous ink-absorbing swelling coating 101 .

[0025] The fast-drying sublimation transfer paper 110 of the present invention has the advantages of simple production and operation, fast ink drying speed, high transfer rate, and is suitable for low-gram weight base paper.

[0026] The present invention will be further described below by specific examples.

example 1

[0028] Base paper 100 adopts a basis weight of 52 g / m 2 base paper.

[0029] Coating composition: 50 parts of bio-based powder, 50 parts of pigment, and 10 parts of intumescent adhesive. The bio-based powder is tapioca oxidized starch with a particle size of 15um; the pigment is calcium carbonate with a particle size of 5um. The swelling adhesive is sodium carboxymethyl cellulose and oxidized corn starch, and the mass ratio of sodium carboxymethyl cellulose and oxidized corn starch is 1:1. The solid content of the paint is 45%.

[0030] The coating method adopts roller coating, and the coating amount is 10g / m 2 , hot air drying, drying temperature is 110 ℃.

[0031] The printing and transfer tests were carried out on the prepared low-weight fast-drying sublimation transfer paper. After printing, the surface of the coated paper was dried for 10s, and the 300% ink volume of the sublimation ink C (cyan) and M (magenta) were measured respectively. ), Y (yellow), K (black) col...

example 2

[0033] Base paper 100 adopts a basis weight of 95 g / m 2 base paper.

[0034]Coating composition: 10 parts of bio-based powder, 90 parts of pigment, and 30 parts of intumescent adhesive. The bio-based powder is raw corn starch with a particle size of 12um; the pigment is calcium carbonate with a particle size of 10um. The expansion adhesive is methyl cellulose. The solid content of the paint is 60%.

[0035] The coating method adopts roller coating, and the coating amount is 15g / m 2 , hot air drying, drying temperature is 140 ℃.

[0036] The printing and transfer tests were carried out on the prepared low-gram weight fast-drying sublimation transfer paper. After printing, the surface drying time of the coated paper was 5s, and the 300% ink volume of the sublimation ink C (cyan) and M (magenta) were measured respectively. ), Y (yellow), K (black) color blocks on the fabric transfer rates were 85.5%, 86.1%, 85.4%, 87.5%.

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Abstract

The invention belongs to the technical field of transfer paper and particularly relates to quick-dry thermal sublimation transfer paper and a preparation method thereof as well as a coating composition and a microporous ink absorption expanding coating constructed by cooperating with the coating composition. The invention provides the coating composition; the coating composition is prepared from bio-based powder, a pigment and an expansive adhesive. The invention also provides a multi-particle microporous ink absorption expanding coating which is constructed by cooperating with the coating composition and has the function of capillary tubes; the microporous ink absorption expanding coating respectively swells up and shrinks micropores of the coatings after ink absorption and drying, so that the micropores can be correspondingly closed and opened, and quick drying and transfer of ink are realized. The invention further provides a method for preparing the quick-dry thermal sublimation transfer paper from the coating composition. Measured by an experiment, an obtained product absorbing 300% of volume of sublimation ink has no phenomena of ink swimming, ink piling, and unclearness on the surface image; the transfer rate reaches 85 percent or above; surface drying time of printed paper can reach 0 second to the maximum extent; the quick-dry thermal sublimation transfer paper has theadvantages of high drying speed of the ink, high transfer rate, simplicity and convenience in production and operation and the like.

Description

technical field [0001] The invention belongs to the technical field of transfer paper, and in particular relates to a fast-drying sublimation transfer paper, a preparation method thereof, a coating composition and a microporous ink-absorbing expansion coating constructed in cooperation with the same. Background technique [0002] Dye-sublimation transfer printing is a highly green and environmentally friendly printing and dyeing technology. The required pattern is printed on the sublimation transfer paper through an inkjet printer, and the heat sublimates the sublimation ink to transfer it to the fabric. With the development of inkjet printing equipment, the printing speed is getting faster and faster, which requires that the sublimation transfer paper must have a faster drying speed to meet the reality of improving production efficiency. The ink absorption and drying speed of the existing ordinary thermal transfer paper is very slow, and the solvent of the ink stays on the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H19/44B44C1/16
CPCB44C1/16D21H19/44
Inventor 陈港邝其通张俊奇
Owner SOUTH CHINA UNIV OF TECH