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Waterproof recycled paper and production method thereof

A technology of recycled paper and paper, applied in the fields of paper and its production preparation, waterproof recycled paper and its production, to achieve the effects of good waterproof performance and long use time

Inactive Publication Date: 2013-11-20
区锦泉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports on waterproof recycled paper with specific waterproof function.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 The recycled paper of the present invention was processed by the following production method.

[0027] 1. Produce kraft eucalyptus pulp according to the traditional pulping method, wherein eucalyptus wood chips and tap water are mixed according to the ratio of 1:3, and kraft cooking is carried out; office waste paper is recovered, sorted, and pulped by a hydropulper to obtain waste Paper pulp, then according to waste paper pulp 35%, the weight ratio of 65% of kraft eucalyptus pulp waste paper pulp and kraft eucalyptus pulp are mixed evenly, make mixed slurry.

[0028] 2. The mixed pulp is washed, bleached, washed and screened by the original process, and then sent to the refining system for refining for 30 minutes to obtain a beating pulp with a beating degree of 45°SR, concentrated and set aside.

[0029] 3. In the papermaking section, disperse and remove impurities from the prepared pulp sheets, and perform refining and beating with the original refining and...

Embodiment 2

[0031] Example 2 The recycled paper of the present invention was processed by the following production method.

[0032] 1. Produce sulfite wheat straw pulp according to the traditional pulping method, wherein the flakes and river water are mixed according to the ratio of 1:3, and the sulfite cooking is carried out; office waste paper is recovered, sorted, and pulped with a hydropulper to obtain waste pulp, and then according to the weight ratio of 40% waste paper pulp and 60% sulfite wheat straw pulp, the waste paper pulp and sulfite wheat straw pulp are evenly mixed to make a mixed slurry.

[0033] 2. The mixed pulp is washed, bleached, washed and screened according to the original process, and then sent to the refining system for refining for 120 minutes to obtain a beating pulp with a beating degree of 46°SR, concentrated and set aside.

[0034] 3. In the papermaking section, disperse and remove impurities from the prepared pulp sheets, and perform refining and beating with...

Embodiment 3

[0036] Example 3 The recycled paper of the present invention was processed by the following production method.

[0037] 1. Produce bagasse pulp according to the traditional pulping method, in which eucalyptus wood chips and tap water are mixed according to a ratio of 1:3, and then cooked; office waste paper is recycled, sorted, and pulped with a hydropulper to obtain waste paper pulp, and then according to Waste paper pulp 45%, bagasse pulp 55% by weight. Waste paper pulp and bagasse pulp are evenly mixed to make a mixed slurry.

[0038]2. The mixed pulp is washed, bleached, washed and screened by the original process, and then sent to the refining system for refining for 240 minutes to obtain a beating pulp with a beating degree of 48°SR, concentrated and set aside.

[0039] 3. In the papermaking section, disperse and remove impurities from the prepared pulp sheets, and perform refining and beating with the original refining and beating process. After the beating is completed...

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PUM

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Abstract

The invention discloses a waterproof recycled paper and a production method thereof. The waterproof recycled paper is prepared through pulping by taking waste paper and papermaking plant fiber raw materials as raw materials, mixing pulps through adding waterproof additives such as lipid, resin, starch, pectin, soda pulp, sulfite pulp, sulfate pulp, polyacrylonitrile, marble powder, a water-soluble high-molecular polymer and sodium hydroxide after the pulping process of a papermaking stage, and then, combining a paper production process. The texture of the waterproof recycled paper produced by using the method disclosed by the invention is not changed; and the waterproof recycled paper has the characteristics that the inside and outside of the paper are waterproof, the surface of the paper can be written or printed, and the paper is colorless, nontoxic and tasteless; the paper can be additionally dyed to be any color, but the waterproof function of the paper is not affected; and the paper can be used as packaging paper, writing paper, paper protective clothing, a paper bag and the like, and can be recycled so as to be an environment-friendly material.

Description

technical field [0001] The invention relates to a paper and a production method thereof, in particular to a waterproof regenerated paper and a production method thereof, belonging to the technical field of paper and its production and preparation. Background technique [0002] With the development of science and technology, the progress of society and the continuous improvement of people's living standards, paper has been endowed with various functions. In industries such as navigation, construction, and catering, some paper materials with waterproof properties are needed, such as nautical map paper, waterproof packaging paper, fast food box cardboard, water cup paper, paper slippers, waterproof thermal insulation paper or cardboard, etc. [0003] The waterproof performance of existing paper is generally achieved by adding waterproof chemicals into the pulp, such as soaking the base paper in wax, adding heavy oil to the pulp, etc., or coating the waterproof agent on the surf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H11/14D21H21/14D21H23/18D21H17/67
CPCD21H11/14D21H27/26D21H17/28D21H17/34D21H17/37D21H21/16D21H27/10D21H11/00D21H17/21
Inventor 区锦泉
Owner 区锦泉
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