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Preparation method of starch adhesive for adhering cartons

A starch adhesive, carton technology, applied in the direction of adhesive types, starch-derived adhesives, non-polymer adhesive additives, etc., can solve the problems of low bonding strength, slow drying speed, unstable storage performance, etc. To achieve the effect of stable storage performance

Inactive Publication Date: 2012-05-02
CHANGSHU KAILIDA HONEYCOMB PACKING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As an environment-friendly natural adhesive, starch adhesives are more and more favored by carton manufacturers, but the starch adhesives currently used in the carton production industry are mainly made of raw materials such as starch, water, sodium hydroxide, and oxidants. The shortcoming lies in drying. Slow speed, low bonding strength, poor water resistance and unstable storage performance, etc., which limit its application in the carton production industry to a certain extent
Chinese patent CN101760148A relates to an adhesive made of corn starch, which is mainly used for bonding paper, wood and cloth; Chinese patent CN101885952A relates to a corn starch adhesive and its preparation method; Chinese patent CN1778855 relates to a manufacturing method of starch adhesive , this kind of invention products all belong to the traditional starch adhesive, that is, there are the shortcomings mentioned by the applicant

Method used

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  • Preparation method of starch adhesive for adhering cartons

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] According to parts by weight, first add 500 parts of water and 100 parts of cornstarch into the reaction kettle, stir evenly, add 5 parts of hydrogen peroxide, react for 30 minutes, then slowly add 10 parts of sodium hydroxide aqueous solution with a mass percentage concentration of 30%, and stir to react 110 minutes, add 0.8 parts of borax, 0.03 parts of ferrous sulfate, 10 parts of polyvinyl alcohol, 18 parts of urea, 0.6 parts of sodium hydroxymethyl cellulose, 0.1 parts of sodium benzoate, 16 parts of inorganic bentonite and 0.6 parts of tributyl phosphate, Then stir and react for 55 minutes to obtain a starch adhesive for carton bonding.

Embodiment 2

[0019] According to parts by weight, first add 450 parts of water and 100 parts of sorghum starch into the reaction kettle, stir evenly, add 3 parts of hydrogen peroxide, react for 60 minutes, then slowly add 5 parts of sodium hydroxide aqueous solution with a mass percentage concentration of 28%, and stir for reaction 130 minutes, add 0.2 parts of borax, 0.01 parts of ferrous sulfate, 9 parts of polyvinyl alcohol, 12 parts of urea, 0.3 parts of sodium hydroxymethyl cellulose, 0.05 parts of sodium benzoate, 15 parts of inorganic bentonite and 0.5 parts of tributyl phosphate, Then stir and react for 60 minutes to obtain a starch adhesive for bonding cartons.

Embodiment 3

[0021] According to parts by weight, first add 550 parts of water and 100 parts of sweet potato starch into the reaction kettle, stir evenly, add 6 parts of hydrogen peroxide, react for 50 minutes, then slowly add 7 parts of sodium hydroxide aqueous solution with a mass percentage concentration of 29%, and stir for reaction 120 minutes, add 0.6 parts of borax, 0.04 parts of ferrous sulfate, 15 parts of polyvinyl alcohol, 17 parts of urea, 0.8 parts of sodium hydroxymethyl cellulose, 0.09 parts of sodium benzoate, 18 parts of inorganic bentonite and 0.7 parts of tributyl phosphate, Then stir and react for 65 minutes to obtain a starch adhesive for carton bonding.

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Abstract

The invention discloses a preparation method of a starch adhesive for adhering cartons, which belongs to the technical field of adhesive preparation, and comprises: adding 450 to 600 weight parts of water and 100 weight parts of starch into a reaction kettle; uniformly stirring, and adding 3 to 8 weight parts of hydrogen peroxide; reacting for 0.5 to 1 hour, and slowing adding 5 to 12 weight parts of aqueous solution of sodium hydroxide; stirring and reacting for 110 to 130 minutes, adding 0.2 to 0.8 weight part of crosslinking agent, 0.01 to 0.05 weight part of ferrous sulfate, 9 to 16 weight parts of water-proof agent, 10 to 20 weight parts of catalyst, 0.2 to 1.2 weight parts of tackifier, 0.05 to 0. 1 weight part of preservative, 15 to 18 weight parts of quick drying agent, and 0.5 to 1 weight part of tributyl phosphate in turn; stirring and reacting for 55 to 65 minutes; and obtaining the starch adhesive for adhering cartons. The method has the advantages that: the starch adhesive is stable in storage and is environment-friendly; the drying time is short, and the water-proof time is long; and the starch adhesive meets national standards.

Description

technical field [0001] The invention belongs to the technical field of adhesive preparation, and in particular relates to a preparation method of a starch adhesive for carton bonding. Background technique [0002] As an environment-friendly natural adhesive, starch adhesive is more and more favored by carton manufacturers, but the starch adhesive currently used in the carton production industry is mainly made of raw materials such as starch, water, sodium hydroxide, oxidant, etc. The shortcoming lies in drying Slow speed, low bonding strength, poor water resistance and unstable storage performance, etc., which limit its application in the carton production industry to a certain extent. Chinese patent CN101760148A relates to an adhesive made of corn starch, which is mainly used for bonding paper, wood and cloth; Chinese patent CN101885952A relates to a corn starch adhesive and its preparation method; Chinese patent CN1778855 relates to a manufacturing method of starch adhesiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/10C09J11/04C09J11/06C08B31/18
Inventor 方云祥
Owner CHANGSHU KAILIDA HONEYCOMB PACKING MATERIALS
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