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Preparation method of high-strength corrugated paper

A corrugated paper, high-strength technology, used in papermaking, papermaking, textiles and papermaking, etc., can solve the problems of water content affecting the strength of corrugated paper products, decrease in water resistance and puncture resistance, and no patent documents have been found. Puncture properties, improved water resistance, enhanced water penetration resistance

Inactive Publication Date: 2011-10-26
蓟县东赵乡福利造纸厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production process of corrugated paper, the following methods are usually used: pulping → pressure pumping into the pulp stabilization tank → water pressure difference spraying water to hang pulp → felt through suction → vacuum pump dehydration and drying → heating dryer drying → finished product finalizing and coiling, etc. Process design, the defect of this process is that sometimes in order to save costs, waste paper is wet pulverized and then pulped, but its water resistance and puncture resistance will be reduced, and because of the short drying and aging process in the preparation process, thus Affects the strength and moisture content of corrugated paper products
[0004] After searching, no patent documents related to the content of this patent were found

Method used

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Examples

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Comparison scheme
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Embodiment 1

[0026] A method for preparing high-strength corrugated paper, the raw material composition and parts by weight are respectively:

[0027] Corn starch 200kg

[0028] Ammonium persulfate 16kg

[0029] Aluminum sulfate 40kg;

[0030] Its preparation steps are:

[0031] (1) Pulping: add 1 t of water to the reactor, heat up, keep the temperature at 80°C, add cornstarch with stirring, and mix well to obtain a cornstarch solution;

[0032] (2) Thickening: Stir and add ammonium persulfate into the cornstarch solution, mix well, the cornstarch solution thickens, heat up to 94-100°C, and keep warm for 5-15 minutes;

[0033] (3) Anti-water treatment: aluminum sulfate is dissolved to obtain aluminum sulfate solution, and its solution mass fraction is 10%;

[0034] (4) One-time drying: Stir the above-mentioned aluminum sulfate solution into the thickened cornstarch solution, add water and stir to keep the solid content of the mixture in the reactor at 8-12%, and adjust the temperature ...

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PUM

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Abstract

The invention relates to a preparation method of corrugated paper, which comprises the following steps: pulping 20-30 parts of corn starch, 1-5 parts of ammonium persulfate and 4-8 parts of aluminum sulfate, thickening, and carrying out water-repellent treatment, primary baking, surface sizing and secondary baking to obtain the finished corrugated paper product. In the invention, the starch sizing agent is coated on the surface of the semi-finished corrugated paper product, and the corrugated paper is subjected to secondary baking and is completely aged, thereby effectively enhancing the liquid-repellent performance of the final corrugated paper product and enhancing the water repellence of the corrugated paper.

Description

technical field [0001] The invention belongs to the field of pulp and paper making, in particular to a method for preparing high-strength corrugated paper. Background technique [0002] Corrugated box is a kind of commonly used transport packaging. The corrugated cardboard used to make cartons is mainly composed of corrugated paper, face value and inner paper. Generally, 2 or 3 layers of corrugated paper are separated by core paper in the middle. After gluing and forming, a common 5-layer or 7-layer board. Because corrugated boxes are used as transport packaging, they require high water resistance and puncture resistance. [0003] Corrugated paper is usually made of broad-leaf semi-fiber wood pulp or wheat straw pulp, etc. Its quantitative is generally low, but corrugated paper plays the role of a skeleton in corrugated board after being formed under a certain temperature and pressure. In the production process of corrugated paper, the following methods are usually used: p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F11/12D21H17/65
Inventor 陈永维
Owner 蓟县东赵乡福利造纸厂
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