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Process for preparing low-basis-weight corrugated paper

A preparation process, corrugated paper technology, applied in the field of papermaking, can solve the problems of not being able to provide economic benefits to enterprises, and high quantitative

Active Publication Date: 2013-04-10
LEE & MAN PAPER MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, corrugated paper in the prior art generally has the defect of relatively high weight, which makes less cartons produced by the same weight of corrugated paper, which cannot provide enterprises with higher economic benefits.

Method used

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  • Process for preparing low-basis-weight corrugated paper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation process of low weight corrugated paper, adopting such as figure 1 The shown processing equipment carries out production, including the following steps.

[0038] a. Put American waste and European waste as waste paper into the pulper 100 to shred to form pulp. The ratio of American waste to European waste is 1:2~1:4.

[0039] b. The pulp passes through the pressure screen 200 and the slag remover 300 in sequence to remove impurities.

[0040] c. The pulp after impurity removal is input to the grinding disc 400 for beating treatment to obtain pulp.

[0041] d. Add auxiliary materials to the slurry. The auxiliary materials include strengthening agent, sizing agent and aluminum sulfate. The adding amount of strengthening agent is 25~35 Kg / T waste paper, and the adding amount of sizing agent is 10~15 Kg / T waste paper , the amount of aluminum sulfate added is 15~20 Kg / T waste paper.

[0042] e. Pump the slurry to the wire section 500 for molding and dehydrati...

Embodiment 2

[0047] A preparation process of low weight corrugated paper, adopting such as figure 1 The shown processing equipment carries out production, including the following steps.

[0048] a. Put American waste and European waste as waste paper into the pulper 100 to shred to form pulp. The ratio of American waste and European waste is 1:3, that is, the content of American waste is 25%, and the content of European waste is 75%.

[0049] b. The pulp passes through the pressure screen 200 and the slag remover 300 in sequence to remove impurities.

[0050] c. The pulp after impurity removal is input to the grinding disc 400 for beating treatment to obtain pulp. That is, the fibers are divided into filaments through the friction between the grinding teeth of the grinding disc 400 and the fibers, so that the slurry is processed.

[0051] d, Add auxiliary materials to the slurry, auxiliary materials include strengthening agent, sizing agent and aluminum sulfate, the addition of strengthe...

Embodiment 3

[0057] A preparation process of low weight corrugated paper, adopting such as figure 1 The shown processing equipment carries out production, including the following steps.

[0058] a. Add American waste and European waste as waste paper into the pulper 100 to shred to form pulp. The ratio of American waste to European waste is 1:2.

[0059] b. The pulp passes through the pressure screen 200 and the slag remover 300 in sequence to remove impurities.

[0060] c. The pulp after impurity removal is input to the grinding disc 400 for beating treatment to obtain pulp. That is, the fibers are divided into filaments through the friction between the grinding teeth of the grinding disc 400 and the fibers, so that the slurry is processed.

[0061] d, Add auxiliary materials to the slurry, auxiliary materials include strengthening agent, sizing agent and aluminum sulfate, the addition of strengthening agent is 25 Kg / T waste paper, the addition of sizing agent is 15 Kg / T waste paper, alum...

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Abstract

The invention relates to a process for preparing low-basis-weight corrugated paper. The process comprises the following steps of: a, adding American waste paper and European waste paper which serve as waste paper into a pulper according to a proportion of (1: 2)-(1: 4), and pulping into paper pulp; b, removing foreign substances from the paper pulp through a pressure sieve and a slag remover; c, inputting the paper pulp into a millstone and pulping so as to make pulp; d, adding an auxiliary material which comprises a reinforcer, a sizing agent and aluminum sulfate; e, pumping the pulp to a net part, forming and dehydrating the pulp until the dryness of the pulp is 15 to 25 percent; f, conveying the formed pulp to a squeezing part which is used for squeezing and dehydrating the pulp until the dryness of the pulp is 40 to 50 percent; and g, conveying the pulp to a drying part which is used for drying the pulp until the dryness of the pulp is 90 to 95 percent so as to prepare the finished corrugated paper. In the process, the proportion of the waste paper is optimized, the foreign substances in the pulped waste paper are removed, the optimized auxiliary material is added into the pulped waste paper, and the processed waste paper is formed and dehydrated by using a net as well as dried by steam, so the low-basis-weight and high-intensity corrugated paper can be obtained.

Description

technical field [0001] The invention relates to the technical field of papermaking, in particular to a preparation process of low weight corrugated paper. Background technique [0002] As an excellent packaging material, corrugated carton 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. Favored by modern society. The scope of use is getting wider and wider, and the speed of development is getting faster and faster. [0003] With the wide application of corrugated boxes, people's requirements for corrugated paper are getting higher and higher. However, corrugated paper in the prior art generally has the defect of relatively high weight, so that the same weight of corrugated paper produces fewer cartons, which cannot provide higher economic benefits for enterprises. [0004] Therefore, in view of the deficiencies of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/10D21H11/14D21H21/18D21H21/16D21H17/66
Inventor 李文斌
Owner LEE & MAN PAPER MFG
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