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Water transfer paper and preparation method thereof

A technology of water transfer printing paper and water-soluble coating, which is applied in the field of papermaking processing, can solve the problems of reduced water permeability of paper, increased difference of water transfer printing paper, and affecting demoulding speed, etc., to achieve saturated color, vivid images, Uniform demoulding effect

Active Publication Date: 2020-07-31
山东金蔡伦纸业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Single-side coating can improve the printing effect of the pattern, but it causes the difference between the two sides of the water transfer paper to increase, causing paper warping and deformation, and balancing the tension caused by one-side coating through the back coating method will lead to paper loss. The effect of water permeability is reduced, which affects the demoulding speed
Improving the stiffness by increasing the base paper weight will lead to a sharp increase in the cost of papermaking. At present, the market is in urgent need of water-transfer paper that can achieve fast demoulding speed and excellent printing and transfer effects on the premise of ensuring the water permeability of the paper. printing paper

Method used

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  • Water transfer paper and preparation method thereof
  • Water transfer paper and preparation method thereof

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Embodiment 1

[0031] Such as figure 1 As shown, the present embodiment illustrates a kind of water transfer printing paper, comprising a layer-by-layer backcoat coating 1, base paper 2, primer coating 3, water-soluble coating 4 and waterproof coating 5, the backcoat The coating composition of coating 1 is: 8-15 parts by weight bacterial cellulose wet film, 0.08-0.15 parts by weight hydrogen peroxide, 0.1-0.2 parts by weight sodium hydroxide, 30-40 parts by weight water at 70-90 ° C, Shearing and dispersing in a high-speed disperser for 30-45 minutes, adding 40-60 parts by weight of water to dilute, and then passing through a 20-mesh sieve to prepare a back-coating paint with a solid content of 2-5%.

[0032] This embodiment also illustrates a method for preparing water transfer printing paper, which specifically includes the following steps:

[0033] 1. Base paper 2: 20-40 parts of bleached softwood pulp and 60-80 parts of bleached hardwood pulp are mixed and beaten to 28-35°SR, and 0.1-0....

Embodiment 2

[0044] 1. Base paper 2: Use commercially available water transfer printing base paper as the base paper.

[0045] The key indicators of raw paper are as follows:

[0046] Base paper weight: 160±5g / m 2 ,

[0047] Banner deviation: ≤2.5%,

[0048] Surface sizing degree (sizing surface): ≤60g / m 2 ,

[0049] Smoothness (gluing surface): ≥25s,

[0050] Tensile strength (longitudinal): ≥6.0KN / m

[0051] Stiffness: 3mN·m

[0052] Bulk thickness: ≥1.3cm 3 / g

[0053] The paper surface is required to be smooth as a whole without creases, dust, spots and other paper defects.

[0054] 2. Primer coating 3: 50-60 parts of calcium carbonate, 20-30 parts of kaolin, 12-16 parts of oxidized starch, 5-8 parts of styrene-butadiene latex, 0.5-1 part of carboxymethyl cellulose, 0.1-0.3 1 part of sodium hexametaphosphate, 0.1-0.5 part of sodium hydroxide, and 0.01-0.05 part of an organosilicon defoamer are prepared into primer coatings with a solid content of 50-65 percent and a viscosity...

Embodiment 3

[0061] 1. Base paper 2: Use commercially available water transfer printing base paper as the base paper.

[0062] The key indicators of raw paper are as follows:

[0063] Base paper weight: 180±5g / m 2 ,

[0064] Banner deviation: ≤2.5%,

[0065] Surface sizing degree (sizing surface): ≤60g / m 2 ,

[0066] Smoothness (glue surface): ≥22s,

[0067] Tensile strength (longitudinal): ≥8.0KN / m

[0068] Stiffness: 4mN·m

[0069] Bulk thickness: ≥1.4cm 3 / g

[0070] The paper surface is required to be smooth as a whole without creases, dust, spots and other paper defects.

[0071] 2. Primer coating 3: 50-60 parts of calcium carbonate, 20-30 parts of kaolin, 12-16 parts of oxidized starch, 5-8 parts of styrene-butadiene latex, 0.5-1 part of carboxymethyl cellulose, 0.1-0.3 1 part of sodium hexametaphosphate, 0.1-0.5 part of sodium hydroxide, and 0.01-0.05 part of a defoamer are prepared into a primer coating, the solid content of the coating is 50-65%, and the viscosity of the...

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Abstract

The invention discloses water transfer paper and a preparation method thereof. The water transfer paper comprises a back coating layer, base paper, a prime coating layer, a water-soluble coating layerand a waterproof coating layer which are distributed layer by layer. Coating of the back coating layer comprises 8-15 parts by weight of a bacterial cellulose wet film; 0.08-0.15 part by weight of hydrogen peroxide, 0.1-0.2 part by weight of sodium hydroxide and 30-40 parts by weight of water, and is prepared by shearing and dispersing at 70-90 DEG C in a high-speed dispersion machine for 30-45 min, adding 40-60 parts by weight of water for dilution, and then sieving the mixture to obtain the back coating, with the solid content of the coating being 2-5%. According to the prepared water transfer paper, on the premise that the water permeation speed of the paper is guaranteed, the back face is coated with the bacterial cellulose glue solution, and the water transfer paper which is stable in size, high in demolding speed and excellent in printing and transferring effect is prepared.

Description

technical field [0001] The invention relates to the technical field of papermaking processing, in particular to water transfer printing paper and a preparation method thereof. Background technique [0002] Water transfer printing paper is a special paper produced with the development and application of water transfer printing technology. The biggest feature of water transfer printing is that it is suitable for concave-convex three-dimensional curved surface printing, which makes up for the traditional printing technology's requirement that the substrate be flat or nearly flat, and the printing effect is realistic. Therefore, it is the preferred printing method for porcelain, glassware, plastic products, nameplates, etc. [0003] The water transfer printing technology prints the pattern on the base paper coated with a layer of soluble adhesive film on the surface, and the adhesive film is separated from the base paper by soaking in water on the back, and the pattern is trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/00D21H23/32D21H23/34D21H23/52D21H25/06
CPCD21H27/00D21H23/32D21H23/34D21H23/52D21H25/06
Inventor 姜亦飞韩文佳徐秋红李霞丁其军赵传山孔凡功吕高金
Owner 山东金蔡伦纸业有限公司
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