A kind of foam composite paper

A technology of composite paper and defoaming agent, which is applied in special paper, papermaking, paper, etc., can solve the problems of foam layer damage, foam point density, PE or PP layer breakthrough, etc., and achieve good printing effect and visual effect Effect

Active Publication Date: 2019-01-01
QINGDAO RONGXIN IND & TRADE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a new type of foamed composite paper, which solves the problem that the foaming point of the existing film-coated paper is dense after foaming, and the gas is easy to break through the PE or PP layer during foaming, causing the foaming layer to be damaged. It is conducive to the maintenance of the printing effect after printing, so as to make up for the shortcomings of the existing technology

Method used

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  • A kind of foam composite paper
  • A kind of foam composite paper
  • A kind of foam composite paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 with 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%;

[0028] Above-mentioned coated latex is used for preparing foam composite paper:

[0029] 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 co...

Embodiment 2

[0031] Such as figure 1 with 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.

[0032] 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 t...

Embodiment 3

[0034] Such as figure 1 with 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.

[0035] 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 temp...

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Abstract

The invention provides a novel foamed composite paper. The novel foamed composite paper comprises a first layer blocked layer prepared from medium-density polyethylene (MDPE), a second layer prepared from food-grade packaging paper, and a third layer foamed layer prepared from low density polyethylene (LDPE); the external side of the third layer foamed layer is coated with a coating emulsion; the coating emulsion contains 33 to 55% of an acrylate polymer, 1 to 2% of an antifoaming agent, 24 to 35% of titanium oxide (particle size ranging from 5 to 20<mu>m), and 20 to 30% of deionized water. The novel foamed composite paper is capable of solving problems in the prior art that the foamed layer is easily destroyed because foamed points are intensive, and the PE or PP layer is easily broken by gas in foaming, so that complete continuous printing surfaces are provided for printing, and excellent printing effect and visual effect are maintained.

Description

technical field [0001] The invention belongs to the technical field of food-grade packaging materials, and in particular relates to a novel 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 casting machine. The main featur...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/30D21H27/10B32B27/10B32B27/32B32B33/00
CPCB32B27/10B32B27/32B32B33/00B32B2250/40B32B2255/10B32B2255/26B32B2439/70D21H27/30
Inventor 姜群
Owner QINGDAO RONGXIN IND & TRADE CO LTD
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