Compound surface reinforcing agent for packaging paperboard and method for preparing same

A surface enhancer, packaging board technology, applied in the direction of adding enhancers, can solve the problems of unsatisfactory apparent performance, poor solubility, limited strengthening effect of sizing agent compounding, etc., to achieve easy industrial production, low cost, enhanced good effect

Active Publication Date: 2012-06-27
浙江奥迪斯丹科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above patents all focus on improving the performance of a certain paper, and do not combine the improvement of the mechanical strength of the paper with the apparent performance, and are generally binary sizing agents, such as starch and CPAM or synthetic surface sizing agents. The solubility of primary sizing agent is poor when mixed, so the compounding effect of sizing agent is very limited, and the appearance performance is often not ideal

Method used

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  • Compound surface reinforcing agent for packaging paperboard and method for preparing same
  • Compound surface reinforcing agent for packaging paperboard and method for preparing same
  • Compound surface reinforcing agent for packaging paperboard and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: A kind of preparation method of composite surface strengthening agent for packaging cardboard adopts the following process steps:

[0030] (1) Weighing: Weigh 2.77% of starch, 0.2% of sodium carboxymethyl cellulose, 0.23% of synthetic polymer surface sizing agent, and the balance is water, and set aside; the unit is mass percentage;

[0031] (2) Mix the starch with water to obtain an aqueous starch solution; heat and gelatinize the starch aqueous solution at a temperature of 90°C for 20 minutes, and keep it in a water bath at 90°C for 5 minutes after heating and gelatinizing ;

[0032] (3) Add sodium carboxymethyl cellulose to the aqueous starch solution obtained in step (2) at 50°C, and stir at a high speed with a stirring speed of 360 rpm and a stirring time of 15 minutes;

[0033] (4) Add the synthetic polymer surface sizing agent into the starch aqueous solution treated in step (3), stir evenly, the stirring speed is 80 rpm, and the stirring time is 5...

Embodiment 2

[0035] Embodiment 2: A kind of preparation method of composite surface strengthening agent for packaging cardboard adopts the following process steps:

[0036] (1) Weighing: Weigh 9% of starch, 0.8% of sodium carboxymethyl cellulose, 1.12% of synthetic polymer surface sizing agent, and the balance is water, and set aside; the unit is mass percentage;

[0037] (2) Mix the starch with water to obtain an aqueous starch solution; heat and gelatinize the starch aqueous solution at a temperature of 95°C for 15 minutes, and then keep it in a water bath at 95°C for 3 minutes after heating and gelatinizing ;

[0038] (3) Add sodium carboxymethyl cellulose to the aqueous starch solution obtained in step (2) at 60°C, and stir at a high speed with a stirring speed of 500 rpm and a stirring time of 10 minutes;

[0039] (4) Add the synthetic polymer surface sizing agent into the starch aqueous solution treated in step (3), stir evenly, the stirring speed is 150 rpm, and the stirring time i...

Embodiment 3

[0041] Embodiment 3: A kind of preparation method of composite surface strengthening agent for packaging cardboard adopts the following process steps:

[0042] (1) Weighing: Weigh 5% of starch, 0.5% of sodium carboxymethyl cellulose, 1% of synthetic polymer surface sizing agent, and the balance is water, and set aside; the unit is mass percentage;

[0043] (2) Mix the starch with water to obtain an aqueous starch solution; heat and gelatinize the starch aqueous solution at a temperature of 92°C for 16 minutes, and keep it in a water bath at 92°C for 4 minutes after heating and gelatinizing ;

[0044] (3) Add sodium carboxymethyl cellulose to the aqueous starch solution obtained in step (2) at 55°C, and stir at a high speed at a stirring speed of 400 rpm for 12 minutes;

[0045] (4) Add the synthetic polymer surface sizing agent into the starch aqueous solution treated in step (3), stir evenly, the stirring speed is 100 rpm, and the stirring time is 4 minutes, and the composit...

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Abstract

The invention relates to a method for preparing a compound surface reinforcing agent for a packaging paperboard, which is characterized by comprising the following steps: (1) Weighing: weighting 2.77-9% by weight of starch, 0.2-0.8% by weight of carboxymethylcellulose sodium, 0.23-1.12% by weight of synthetic polymer surface sizing agent and the balance of water for later user; (2) mixing the starch with the water to prepare the aqueous solution of the starch, heating to gelatinize the aqueous solution of the starch, and preserving the heat by water bath; (3) adding the carboxymethylcellulose sodium to the aqueous solution of the starch, which is obtained by processing in the step (2), and stirring at high speed; and (4) adding the synthetic polymer surface sizing agent to the aqueous solution of the starch, which is obtained by processing in the step (3), and stirring at high speed to obtain the compound surface reinforcing agent for the packaging paperboard. The compound surface reinforcing agent has an obvious reinforcing effect, and by taking the corrugated paperboard as an example, the edgewise crush resistance of the corrugated paperboard to which the sizing agent is applied can be improved by 45-68%. The compound surface reinforcing agent has a better reinforcing effect than the prior sizing agent and also has a better reinforcing effect than the singly-used common sizing agent.

Description

technical field [0001] The invention relates to a composite surface strengthening agent for packaging cardboard and a preparation method thereof, in particular to a preparation method of a strengthening agent for increasing the mechanical properties of packaging cardboard such as corrugated cardboard, honeycomb cardboard and box board, belonging to the field of packaging material processing . Background technique [0002] At present, most of the raw materials for domestic packaging paper are waste paper or mixed waste paper. Due to the poor quality of pulp raw materials and low mechanical strength, in order to expand the application range of packaging cardboard and reduce production costs, it is necessary to strengthen its mechanical properties. , to improve its mechanical strength, the surface sizing method is widely used in production. Surface sizing is a method of sizing the surface of paper or paperboard after the sheet is formed. The operation method of surface sizing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/18
Inventor 张新昌郝笑梦冯建华刘洋
Owner 浙江奥迪斯丹科技有限公司
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