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Preparation method for corrugated paper ring crush reinforcing agent

A technology of ring pressure strengthening and corrugated paper, which is applied in the direction of reinforcing agent addition, etc., to achieve the effect of fast curing, easy process control and enhanced strength

Active Publication Date: 2014-05-21
山东奥赛新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing enhancer products cannot meet the above market needs

Method used

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  • Preparation method for corrugated paper ring crush reinforcing agent

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Embodiment 1

[0023] This embodiment is used to illustrate the preparation method of a kind of corrugated paper ring pressure reinforcing agent provided by the present invention, comprises the following steps:

[0024] (1) Corrugated paper ring pressure strengthening agent: Mix 50kg of glyoxal aqueous solution with a concentration of 40wt% and 1kg of p-toluenesulfonic acid evenly, adjust the pH value to 7.5-8.0, then add 15kg of melamine, heat up to 70°C, and react for 30 minutes ; then lower the temperature to 65°C, adjust the pH value to 5.5-6.0, and react for another 30 minutes; then add 10kg of methanol, continue the reaction for 30 minutes, and cool down to room temperature to obtain melamine glyoxal resin.

[0025] (2) Incomplete oxidation of starch: Add 75kg of water, 10kg of soybean starch and 0.03kg of sodium persulfate into the reactor, mix well, raise the temperature of the reactor to 85°C, reflux (to prevent excessive water loss) and keep warm for 25 Minutes, obtain the product ...

Embodiment 2

[0028] This embodiment is used to illustrate the preparation method of a kind of corrugated paper ring pressure reinforcing agent provided by the present invention, comprises the following steps:

[0029] (1) Ring pressure enhancer for corrugated paper: Mix 60kg of glyoxal aqueous solution with a concentration of 40wt% and 1.5kg of p-toluenesulfonic acid evenly, adjust the pH value to 7.5-8.0, then add 19kg of melamine, heat up to 75°C, and react for 35 minutes; then lower the temperature to 70°C, adjust the pH value to 5.5-6.0, and react for another 35 minutes; then add 21kg of methanol, continue the reaction for 40 minutes, and cool down to room temperature to obtain melamine glyoxal resin.

[0030] (2) Incomplete oxidation of starch: Add 82kg of water, 18kg of cornstarch and 0.09kg of ammonium persulfate into the reactor, mix well, raise the temperature of the reactor to 95°C, and reflux for 30 minutes to obtain incomplete cornstarch. Oxidized product 99kg.

[0031] (3) Sy...

Embodiment 3

[0033] Raw material proportioning and preparation method are the same as embodiment 1. The difference is: tapioca starch is used as the starch in step (2), 30wt% hydrogen peroxide is used as the oxidizing agent, and the amount of hydrogen peroxide used is 0.6kg when the oxidizing agent concentration is 30wt%, and the heat preservation reaction time is 20 minutes.

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Abstract

The invention relates to a preparation method for a corrugated paper ring crush reinforcing agent. The method comprises the steps of: (1) preparation of melamine glyoxal resin; (2) incomplete oxidation of starch: mixing water, an oxidizing agent and starch evenly, conducting heating to 85-95DEG C, and carrying out heat preservation reaction for 20-30min to obtain a starch incompletely oxidized product; (3) synthesis of the corrugated paper ring crush reinforcing agent: lowering the temperature of the reaction in step (2) to 60-85DEG C, and adding the melamine glyoxal resin obtained in step (1) into the starch incompletely oxidized product obtained in step (2) to undergo cross-linking reaction for 20-50min, then adding water to conduct dilution, and then adding a cationic salt, and stirring the mixture evenly. After treating the surface of corrugated paper by the corrugated paper ring crush reinforcing agent prepared by the method provided by the invention, the ring crush compression resistance, water resistance and tensile resistance of the corrugated paper are all significant improved. The product cures quickly on machine, and does not change color after drying.

Description

technical field [0001] The invention belongs to the technical field of base paper strengthening agent preparation, and in particular relates to a preparation method of corrugated paper ring pressure strengthening agent. Background technique [0002] Packaging paper mainly includes container board, corrugated base paper, white cardboard (including coated white cardboard), paper bag paper, kraft cardboard, etc. Corrugated cardboard (box) is a green and environment-friendly packaging product recognized all over the world. Corrugated boxes, as a traditional and essential packaging container, have been used for hundreds of years and are deeply favored. At present, the global annual demand for corrugated paper products has reached 100 million metric tons, of which the United States accounts for about 31%, Europe including Eastern Europe about 25%, China about 10%, and Japan 9%. In developed countries such as Europe, America and Japan, due to the high domestic manufacturing costs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/18C08G12/32C08B31/18C08J3/24
Inventor 周军浩
Owner 山东奥赛新材料有限公司
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