Waterproof recycled paper and production method thereof

Inactive Publication Date: 2016-12-15
AU KAMCHUEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0030](2) The conventional waterproof paper generally gets a waterproof property by coating a waterproof layer on a surface thereof. However, the process causes that a surface of paper produced thereby loses aesthetic perception or writing property. Waterproof property of the waterproof recycled paper of the present invention is not obtained by coating a waterproof layer on a surface thereof, but by adding waterproof additive to the paper pulp during a production process, thus, appearances and writing property of the paper is not damaged.
[0031](3) The conventional waterproof paper generally gets a waterproof property by coating a waterproof layer on a surface thereof, so when the paper is folded or rubbed for a plurality of times, the water proof layer on the

Problems solved by technology

However, since during the production process of this type of paper, heavy oil is utilized, the process of heating the material of heavy oil is needed.
Thus, operation processes are quite complicated, which increases costs of production.
Some kinds of waterproof paper produced by the conventional arts have poor waterproof performances, if the paper is frequently utilized or has frequent frictions on a surface thereof, the waterproof layer on a surface of the paper is destroyed, which even leads to the loss of waterproofing property.
Due to lack of air perm

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example

Embodiment 1

[0037]The waterproof recycled paper of the present invention is produced by the following method comprising steps of:

[0038]1. producing sulfate eucalyptus pulp according to a conventional pulping method, wherein an eucalyptus chip and tap water are mixed according to a weight ratio of 1:3 and processed with kraft pulping; recycling mixed office waste, sorting and re-pulping by a hydrapulper to obtain a waste paper pulp; and uniformly mixing the waste paper pulp and the sulfate eucalyptus pulp according to a weight ratio of 35%: 65%, so as to produce a mixed paper pulp;

[0039]2. processing the mixed paper pulp with washing, bleaching and screening, then sending to a grinding system to grind for 30 min, so as to obtain beat pulp having a beating degree of 45° and SR, concentrating for utilizing;

[0040]3. during papermaking process, dispersing, purifying the wood chip, refining and beating, after the process of beating the paper pulp is finished, processing size mixing by add...

Example

Embodiment 2

[0042]The waterproof recycled paper of the present invention is produced by the following method comprising steps of:

[0043]1. producing sulfate wheat straw pulp according to a conventional pulping method, wherein an tablet and river water are mixed according to a weight ratio of 1:3 and processed with sulfite pulping; recycling mixed office waste, sorting and re-pulping by a hydrapulper to obtain a waste paper pulp; and uniformly mixing the waste paper pulp and the sulfate wheat straw pulp according to a weight ratio of 40% : 60%, so as to produce a mixed paper pulp;

[0044]2. processing the mixed paper pulp with washing, bleaching and screening, then sending to a grinding system to grind for 120 min, so as to obtain beat pulp having a beating degree of 46° and SR, concentrating for utilizing;

[0045]3. during papermaking process, dispersing, purifying the wood chip, refining and beating, after the process of beating the paper pulp is finished, processing size mixing by addi...

Example

Embodiment 3

[0047]The waterproof recycled paper of the present invention is produced by the following method comprising steps of:

[0048]1. producing bagasse pulp according to a conventional pulping method, wherein a tablet and tap water are mixed according to a weight ratio of 1:3 and processed with streaming; recycling mixed office waste, sorting and re-pulping by a hydrapulper to obtain a waste paper pulp; and uniformly mixing the waste paper pulp and the bagasse pulp according to a weight ratio of 45% : 55%, so as to produce a mixed paper pulp;

[0049]2. processing the mixed paper pulp with washing, bleaching and screening, then sending to a grinding system to grind for 240 min, so as to obtain beat pulp having a beating degree of 48° and SR, concentrating for utilizing;

[0050]3. during papermaking process, dispersing, purifying the wood chip, refining and beating, after the process of beating the paper pulp is finished, processing size mixing by adding additive accounting for mass f...

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Abstract

Waterproof recycled paper and production method thereof are provided by the present invention. The waterproof recycled paper utilizes waste paper and plant fiber as raw material for papermaking. The waterproof recycled paper is produced by adding waterproof additive for size mixing after beating the paper pulp in a papermaking section, wherein the waterproof additive comprises oil, resin, starch, pectin, soda pulp, sulfite pulp, sulfate pulp, polyacrylonitrile, marble powder, water-soluble high polymer and sodium hydroxide, and combining with conventional process for papermaking. Without changing paper texture, the waterproof recycled paper of the present invention has waterproof property both on an outer and an inner surface thereof. The surfaces of the paper can be written or printed. The waterproof paper of the present invention has characteristics of white color, non-toxic and no smell. The paper can be dyed to any color without damaging the waterproof property thereof. The waterproof paper of the present invention can be utilized as wrapping paper, writing paper, paper for manufacturing protective clothing or paper bag, and can be recycled and thus is an environmental friendly paper.

Description

CROSS REFERENCE OF RELATED APPLICATION[0001]This is a U.S. National Stage under 35 U.S.C. 371 of the International Application PCT / CN2014 / 072873, filed Mar. 4, 2014, which claims priority under 35 U.S.C. 119(a-d) to CN 201310297214.5, filed Jul. 16, 2013.BACKGROUND OF THE PRESENT INVENTION[0002]Field of Invention[0003]The present invention relates to a paper and a production method thereof, and more particularly to a waterproof recycled paper and production method thereof, which belongs to a field of paper and producing technique thereof.[0004]Description of Related Arts[0005]With the development of technology, the improvement of society and people's living standard, paper is widely applied in various fields and plays a variety of roles. In industries such as navigation, construction and catering, paper materials with waterproof properties are required, such as nautical chart paper, waterproof packing paper, paperboard for fast food container, paper for cups, paper for slipper, wate...

Claims

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Application Information

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IPC IPC(8): D21H21/16D21H17/28D21H27/10D21H11/00D21H17/37D21H11/14D21H17/21
CPCD21H21/16D21H11/14D21H17/28D21H27/10D21H11/00D21H17/37D21H17/21D21H27/26D21H17/34
Inventor AU, KAMCHUEN
Owner AU KAMCHUEN
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