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A kind of waste paper pulping auxiliary agent and waste paper papermaking process

A technology for pulping aids and waste paper, applied in the field of papermaking, can solve problems such as insufficient effect and insufficient environmental protection, and achieve the effects of fast forming speed, saving paper consumption and saving drying time.

Active Publication Date: 2020-06-30
广州市宏晓包装制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems that the existing paper-making additives are not environmentally friendly and effective, the present invention provides a new type of additive, which is composed of high-molecular plant protein, which can be used in the papermaking process of waste paper, which can save paper consumption and increase the molding speed. Fast, improve production efficiency, reduce product moisture content, save drying energy and drying time, increase product strength, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 Preparation of a waste paper pulping aid

[0031] The invention relates to a pulping aid for waste paper, wherein the pulping aid is composed of high-molecular vegetable protein.

[0032] The preparation method of the high molecular vegetable protein comprises the following preparation steps:

[0033] (1) Take raw materials by weight as follows:

[0034] 2 parts of soybeans, 3 parts of wheat, 4 parts of peanuts, 4 parts of corn;

[0035] (2) Preparation of extract 1: The prepared extract 1 contains 100mmol / L Tris-HCl pH=8, 30mM trisodium citrate, 20mM NH 4 Cl, 50mM NaCl;

[0036] (3) Preparation of extract solution 2: The prepared extract solution 2 contains 20 mM phosphate buffer solution pH=5.8, 20 mM SDS, and 30 mM glycerol.

[0037] (4) Powder the raw materials described in step (1), add 1 to 30 parts of the extract prepared in step (2) and mix, raise the temperature to 35°C, stir for 1 hour, and then filter;

[0038] (5) Extract the filter residue...

Embodiment 2

[0041] Embodiment 2 A kind of preparation of pulping aid

[0042] The invention relates to a pulping aid for waste paper, wherein the pulping aid is composed of high-molecular vegetable protein.

[0043] The preparation method of the high molecular vegetable protein comprises the following preparation steps:

[0044] (1) Take raw materials by weight as follows:

[0045] 4 parts of soybeans, 5 parts of wheat, 6 parts of peanuts, 5 parts of corn;

[0046] (2) Preparation of extract 1: The prepared extract 1 contains 120mmol / L Tris-HCl pH=8.5, 35mM trisodium citrate, 20mM NH 4 Cl, 50mM NaCl;

[0047] (3) Preparation of extract 2: The prepared extract 2 contains 20 mM phosphate buffer pH=6.0, 20 mM SDS, and 40 mM glycerin.

[0048] (4) Powder the raw materials described in step (1), add 1 to 40 parts of the extract prepared in step (2) and mix, raise the temperature to 40°C, stir for 1.5 hours and then filter;

[0049] (5) Extract the filter residue obtained in step (4) with ...

Embodiment 3

[0052] Embodiment 3 A kind of preparation of pulping aid

[0053] The invention relates to a pulping aid for waste paper, wherein the pulping aid is composed of high-molecular vegetable protein.

[0054] The preparation method of the high molecular vegetable protein comprises the following preparation steps:

[0055] (1) Take raw materials by weight as follows:

[0056] 6 parts of soybeans, 7 parts of wheat, 8 parts of peanuts, 5 parts of corn;

[0057] (2) Preparation of extract 1: The prepared extract 1 contains 150mmol / L Tris-HCl pH=9, 40mM trisodium citrate, 20mM NH 4 Cl, 50mM NaCl;

[0058] (3) Preparation of extract solution 2: The prepared extract solution 2 contains 20 mM phosphate buffer solution pH=6.5, 20 mM SDS, and 50 mM glycerol.

[0059] (4) Powder the raw materials described in step (1), add 1 to 50 parts of the extract prepared in step (2) and mix, raise the temperature to 45°C, stir for 2 hours and then filter;

[0060] (5) Extract the filter residue obt...

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PUM

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Abstract

The invention discloses a waste paper pulping auxiliary and a waste paper papermaking process. The component of the pulping auxiliary is high-molecular vegetable protein. The pulping auxiliary used inthe invention is a neutral product, does not corrode moulds, and can increase the fusion degree of talcum powder or calcium carbonate with paper fibers. According to the waste paper papermaking process provided by the invention, the paper usage quantity is reduced by 20%, the forming speed is high, the water content of products is reduced, the drying energy and the drying time are saved, the drying cost is saved by 30%, and the production efficiency is improved by about 30%. The product of the embodiment has low moisture absorption rate and high product strength.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a waste paper pulping auxiliary agent and waste paper papermaking process. Background technique [0002] Papermaking is one of the four great inventions of our country and has a long history. Pulping is a key step in the papermaking process. China is the world's largest producer of pulping and papermaking, but at the same time, our country's forest resources are relatively scarce. Therefore, there is a serious shortage of fiber resources used in pulping and papermaking. The solution to the shortage of fiber resources in my country Problem, in addition to using a large number of non-wood fibers (such as wheat straw, bagasse, etc.) It can not only avoid a large amount of waste paper garbage from polluting the environment, but also help to save precious forest resources and reduce damage to the environment. In today's increasingly severe environmental situation, the recycling of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21B1/32D21B1/34D21D1/02D21H17/22D21H21/06
CPCD21B1/32D21B1/345D21D1/02D21H17/22D21H21/06Y02W30/64
Inventor 黄晓平王志明
Owner 广州市宏晓包装制品有限公司