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Coating latex for preparation of foamed composite paper

A latex and coating technology, applied in the field of latex coating, can solve the problems of foam layer damage, dense foam points, etc., and achieve good printing effect and visual effect.

Active Publication Date: 2017-08-29
QINGDAO RONGXIN IND & TRADE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to provide a kind of coating latex that is used to prepare foam composite paper, and the composite paper prepared with this latex solves the problem that the foaming points of the existing film-coated paper are dense and when foaming, the gas is easy to disperse PE or PE. Breakthrough of the PP layer causes damage to the foam layer, which is also conducive to maintaining the printing effect after printing, thus making up for the shortcomings of the existing technology

Method used

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  • Coating latex for preparation of foamed composite paper
  • Coating latex for preparation of foamed composite paper
  • Coating latex for preparation of foamed composite paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 and figure 2 As shown, it is a new type of foam composite paper, including the first barrier layer 1 composed of medium-density polyethylene MDPE, the second layer of food-grade packaging paper layer 2, and the third layer composed of low-density polyethylene LDPE The foam layer 3, the fourth layer is a coating layer 4 made of coated latex, and the coating layer 4 is coated on the outside of the third foam layer 3 by using a gravure printing process. Wherein the coating layer 4 includes acrylate polymer (Henkel V-6859) 33%, defoamer 2%, titanium oxide (particle size 5-20 μm) 35%, deionized water 30%;

[0023] Above-mentioned coated latex is used for preparing foam composite paper:

[0024] Its specific preparation method is: take foaming layer 3, food-grade packaging paper layer 2 and barrier layer 1 composition 40+250+20 grams / square meter of food-grade packaging laminating paper as the base material, and make 40 grams of the paper One layer of coa...

Embodiment 2

[0026] Such as figure 1 and figure 2 As shown, it is a new type of foam composite paper, including the first barrier layer 1 composed of medium-density polyethylene MDPE, the second layer of food-grade packaging paper layer 2, and the third layer composed of low-density polyethylene LDPE The foam layer 3, the fourth layer is a coating layer 4 made of coated latex, and the coating layer 4 is coated on the outside of the third foam layer 3 by using a gravure printing process.

[0027] The specific preparation method is as follows: use 40+280+20 grams / square meter of food packaging coated paper composed of foaming layer 3, food-grade packaging paper layer 2 and barrier layer 1 as the base material, and foam 40 grams of the paper on the paper A coating layer is gravure printed on the layer, wherein the coating layer acrylate polymer (Henkel V-6859) 33%, defoamer 2%, titanium oxide (particle size 5-20 μm) 35%, deionized water 30% %, the printing speed is 100 m / min, the drying te...

Embodiment 3

[0029] Such as figure 1 and figure 2 As shown, it is a new type of foam composite paper, including the first barrier layer 1 composed of medium-density polyethylene MDPE, the second layer of food-grade packaging paper layer 2, and the third layer composed of low-density polyethylene LDPE The foam layer 3, the fourth layer is a coating layer 4 made of coated latex, and the coating layer 4 is coated on the outside of the third foam layer 3 by using a gravure printing process.

[0030] The specific preparation method is as follows: use 40+300+20 grams / square meter of food packaging coated paper composed of foaming layer 3, food-grade packaging paper layer 2 and barrier layer 1 as the substrate, and foam 40 grams of the paper on the paper. A coating layer is gravure printed on the layer, wherein the coating layer acrylate polymer (Henkel V-6859) 33%, defoamer 2%, titanium oxide (particle size 5-20 μm) 35%, deionized water 30% %, the printing speed is 100 m / min, the drying tempe...

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Abstract

The invention provides coating latex for preparation of a foamed composite paper. The composite paper prepared from the latex solves the problem that after the existing coated paper foams, foam points are dense and in foaming, gas easily breaks through a PE or PP layer so that the foaming layer is broken. The coating latex is conducive to printing effect keeping after printing and solves the existing problems. The coating latex comprises 33 to 55% of an acrylate polymer, 1% to 2% of an antifoaming agent, 24% to 35% of titanium oxide (having particle diameters of 5 to 20 microns) and 20% to 30% of deionized water. The foamed composite paper prepared from the coating latex solves the problem that the foaming layer of the existing foamed paper has dense foam points and in foaming, gas easily breaks through a PE or PP layer so that the foaming layer is broken. The coating latex can provide a complete continuous printing surface and keeps good printing and visual effects.

Description

technical field [0001] The invention belongs to the technical field of food-grade packaging materials, and in particular relates to a coating latex used for preparing foam composite paper. Background technique [0002] Polymer packaging materials are often required to have multiple functions such as gas barrier, moisture-proof, fragrance preservation, and oil penetration prevention due to different contents; a single variety of packaging materials often cannot meet this requirement. Therefore, polymer composite materials are widely used in the packaging field. It is widely used, especially in packaging products. Different barrier packaging materials can be selected to meet different application requirements. [0003] Most of the large-scale foamed composite papers on the existing market are coated paper foams. The so-called coated paper is the composite material of polyethylene (PE) and polypropylene (PP) plastic particles coated on the surface of the paper through a castin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/58D21H19/44D21H19/38D21H21/12B41M5/42B41M5/52
CPCB41M5/42B41M5/52B41M5/5218B41M5/5263B41M2205/40D21H19/385D21H19/44D21H19/58D21H21/12
Inventor 姜群
Owner QINGDAO RONGXIN IND & TRADE CO LTD
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