Low-temperature starch adhesive for paper products and preparation method thereof

A starch adhesive and low temperature technology, applied in the direction of starch adhesive, adhesive type, polymer adhesive additive, etc., can solve the problems of poor cardboard quality, unstable performance, and easy damage of paper fibers , to achieve excellent viscosity stability, improve water resistance, and simple preparation method

Inactive Publication Date: 2019-08-16
四川港大工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the temperature and air pressure of the existing cardboard production line are relatively high, the fibers of the paper are easily damaged, and the quality of the produced cardboard is poor. The purpose is to provide low-temperature paper starch adhesive and its preparation The method solves the problem that the performance of the existing adhesive is unstable under low temperature and low pressure conditions, the temperature and air pressure of the cardboard production line are relatively high, the fibers of the paper are easily damaged, and the quality of the produced cardboard is poor.

Method used

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  • Low-temperature starch adhesive for paper products and preparation method thereof

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Effect test

Embodiment 1

[0031] The low-temperature paper product starch adhesive of the present invention comprises the following components: starch, solvent water, lye, borax solution, stabilizer, low-temperature additive, starch and solvent water are mixed to prepare starch slurry.

[0032] The present invention changes and improves the low temperature resistance of the adhesive by adding low temperature additives and stabilizers to the starch adhesive, thereby reducing the temperature and air pressure of the cardboard production line, and the produced cardboard has a very strong Moisture resistance, burst resistance, water resistance, and bonding strength are significantly better than national standards.

Embodiment 2

[0034] Based on Example 1, the low-temperature paper product starch binder includes the following components in parts by weight: 100 parts of starch, 300 parts of solvent water, 5 parts of 30% caustic soda, 10 parts of 10% caustic soda Solution, 5 parts of 10% borax solution, 0.7 parts of stabilizer, 2.4 parts of low temperature additive. The stabilizer comprises the following components by weight percentage: polyvinyl formal 55%-75%, hydroxyethyl cellulose 25%-45%. The low-temperature additive includes the following components in weight percentage: 40%-55% of polyvinyl alcohol, 30%-40% of urea-formaldehyde resin, 5-15% of light calcium carbonate, and 3-10% of other resins. The influence of borax on the adhesive index cannot be measured by instruments. It can only be adjusted according to the bonding effect of corrugated cardboard. Moreover, the air humidity changes in the climate, and the amount of borax needs to be adjusted accordingly. The adjustment range depends on the st...

Embodiment 3

[0036] Based on Example 1, the low-temperature paper product starch adhesive includes the following components in parts by weight: 135 parts of starch, 450 parts of solvent water, 7 parts of 30% caustic soda, 19 parts of 10% caustic soda solution, 26 parts of 10% borax solution, 1.2 parts of stabilizer, and 3.3 parts of low-temperature additive. The stabilizer comprises the following components by weight percentage: polyvinyl formal 55%-75%, hydroxyethyl cellulose 25%-45%. The low-temperature additive includes the following components in weight percentage: 40%-55% of polyvinyl alcohol, 30%-40% of urea-formaldehyde resin, 5-15% of light calcium carbonate, and 3-10% of other resins. In this example, the adhesive has very good viscosity stability when the temperature is above 10°C, and it does not precipitate when placed. When the temperature is as low as 2°C-10°C, it is stored for 24 hours and can quickly recover to the initial viscosity and performance of the finished product w...

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Abstract

The invention discloses a low-temperature starch adhesive for paper products and a preparation method thereof. The low-temperature starch adhesive for paper products comprises the following ingredients: starch, solvent water, alkali lye, a borax solution, a stabilizing agent and a low-temperature additive. Starch and the solvent water are mixed to prepare starch slurry. The preparation method comprises the following steps: injecting the solvent water into an adhesive-making container, and controlling water temperature to 35-40 DEG C; injecting alkali lye into the adhesive-making container, stirring and uniformly mixing alkali lye and the solvent water; adding starch into the adhesive-making container, stirring and mixing uniformly to prepare the starch slurry; slowly adding alkali lye intothe starch slurry and continuously stirring, and testing viscosity of the starch slurry; adding the stabilizing agent and continuously stirring when the starch slurry reaches the predetermined viscosity; adding the borax solution into the starch slurry and continuously stirring after the stabilizing agent and the starch slurry are mixed uniformly, then adding the low-temperature additive and stirring to obtain the finished product low-temperature starch adhesive for paper products. Low temperature resistance of the adhesive is changed, and low temperature resistance of the adhesive is enhanced.

Description

technical field [0001] The invention relates to a paper product adhesive and a preparation method thereof, in particular to a low-temperature paper product starch adhesive and a preparation method thereof. Background technique [0002] Corrugated cardboard is a multi-layer adhesive body, which consists of at least one layer of corrugated core paper interlayer and one layer of cardboard. It has high mechanical strength and can withstand bumps and falls during handling. The actual performance of a corrugated box depends on three factors: the characteristics of the core paper and paperboard and the structure of the carton itself. The bonding strength of corrugated cardboard is an important index for testing the physical properties of corrugated cardboard. The bonding process of corrugated cardboard contains complex physical and chemical changes, which mainly depend on the quality of the adhesive. The physical and chemical indicators of the adhesive include viscosity, pH value...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/02C09J11/04C09J11/08
CPCC08K2003/265C08K2003/387C08L2205/035C09J11/04C09J11/08C09J103/02C08L29/14C08L1/284C08L29/04C08L61/24C08K3/38C08K3/26
Inventor 张建
Owner 四川港大工贸有限公司
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