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Method for preparing high-strength corrugated paper

A corrugated paper and high-strength technology, applied in the field of papermaking, can solve the problem of no actual increase in the strength of corrugated board, achieve the effects of increasing moisture resistance and physical strength, improving paper tightness and transverse ring pressure index, and enhancing dimensional stability

Inactive Publication Date: 2016-03-02
FUJIAN LONGCHUANG IND DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technical solution has no actual enhancement effect on the strength of the overall surface of corrugated cardboard

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for preparing high-strength corrugated paper, comprising the following steps:

[0021] (1) Raw material treatment: select plant raw materials and waste paper. The plant raw materials are selected from wood fiber materials, which are a mixture of sawdust, sawdust, shavings and other wood scraps. Minutes, the raw material is fully softened, and then put into a pulper for pulverization, the raw material is dissociated into fibers, and filtered and screened to remove crude fibers and impurities, beating, and the original pulp is obtained, and the original pulp is 35 ° SR;

[0022] (2) Take 80 parts by weight of the raw pulp prepared in step (1), add 5 parts by weight of polyvinyl alcohol fibers and 1 part by weight of silicon dioxide, and mix well;

[0023] (3) Add 15 parts by weight of cationic rosin glue and 10 parts by weight of wet strength agent to the mixture in step (2). The wet strength agent is made of polyamide polyepichlorohydrin resin, and the moisture ...

Embodiment 2

[0026] A method for preparing high-strength corrugated paper, comprising the following steps:

[0027] (1) Select plant raw materials and waste paper. The plant raw materials are selected from wood fiber materials, which are a mixture of sawdust, sawdust, wood shavings and other wood scraps. The raw material is fully softened, put into a pulper and pulverized, so that the raw material is dissociated into fibers, and filtered and screened to remove crude fibers and impurities, and beaten to obtain a raw pulp, and the raw pulp has a knocking degree of 40°SR;

[0028] (2) Take 100 parts by weight of the raw pulp prepared in step (1), add 10 parts by weight of polyvinyl alcohol fibers and 3 parts by weight of silicon dioxide, and mix well;

[0029] (3) Add 20 parts by weight of cationic rosin gum and 15 parts by weight of polyamide polyepichlorohydrin resin to the mixture in step (2), stir well, and then remove the water to obtain papermaking pulp with a water content of 15%;

[...

Embodiment 3

[0032] A method for preparing high-strength corrugated paper, comprising the following steps:

[0033] (1) Select plant raw materials and waste paper. The plant raw materials are selected from crop stalks (such as corn stalks, bagasse, etc.), and add water to make slurry. The temperature of the slurry is 120°C, and the soaking time is 150 minutes, so that the raw materials are fully softened. Put it into a pulper and pulverize it to dissociate the raw material into fibers, and filter and screen to remove crude fibers and impurities, and beat to obtain the original pulp.

[0034] (2) Take 120 parts by weight of the raw pulp prepared in step (1), add 15 parts by weight of polyvinyl alcohol fiber and 5 parts by weight of silicon dioxide, and mix well;

[0035] (3) Add 25 parts by weight of cationic rosin gum and 20 parts by weight of polyamide polyepichlorohydrin resin to the mixture in step (2), stir thoroughly, and then remove the water to obtain papermaking pulp with a water c...

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PUM

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Abstract

The invention relates to the technical field of papermaking and specifically relates to a method for preparing high-strength corrugated paper. The method comprises the steps that (1) plant ingredients and waste paper are selected, pulped in water, then put into a pulper for smashing in order to dissociate the ingredients into fibers, and treated by filtration and screening to remove the crude fibers and impurities, primary pulp is made through pulp beating, and a beating degree of the primary pulp is between 35 DEG SR and 45 DEG SR; (2) 80-120 parts by weight of the primary pulp made at the step (1) is extracted, 5-15 parts by weight of polyvinyl alcohol fibers and 1-5 parts by weight of silicon dioxideare added into the primary pulp, and the mixture is thoroughly mixed; (3) a cation rosin sizing and a wet strength agent are added into the mixture obtained at the step (2), and the mixture is thoroughly stirred and dehydrated to obtain papermaking pulp with a moisture content of 10%-20%; and (4) the paper is manufactured through papermaking of a papermaking machine, the paper is treated by surface sizing, oppression, drying and rolling, and finally the corrugated paper is obtained. The corrugated paper prepared by the method provided by the invention has the advantages of high strength and applicability to more fields.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a method for preparing high-strength corrugated paper. Background technique [0002] Corrugated cardboard is used in the field of transportation packaging. It has the advantages of light weight, low cost, easy processing, convenient storage and transportation, which are not available in wood packaging and metal packaging. Corrugated paper is made of surface paper and core paper. The core paper is generally wavy, and its function and strength are divided by the different corrugated grades. As an excellent packaging material, corrugated paper has the advantages of light weight, puncture resistance, shock resistance, easy processing and molding, good adaptability to decoration and printing, can be recycled, and has no pollution to the environment, so it is favored by modern society. Favored, its scope of use is getting wider and wider, and its development speed is getting faste...

Claims

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Application Information

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IPC IPC(8): D21F11/12D21H11/14D21H13/16D21H17/63D21H17/62D21H21/20
CPCD21F11/12D21H11/14D21H13/16D21H17/62D21H17/63D21H21/20
Inventor 张小聪
Owner FUJIAN LONGCHUANG IND DESIGN
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