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Special quick-drying adhesive for paperboard and preparation method of adhesive

A technology for adhesives and paperboards, applied in adhesive types, starch-derived adhesives, polymer adhesive additives, etc., can solve problems such as high glue consumption, delamination, and high scrap rate

Inactive Publication Date: 2019-09-10
DONGGUAN JINTIAN PAPER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the gray board paper is laminated with glue and other sized packaging paper, the glue will penetrate into the gray board paper in large quantities, and after the glue that penetrates into the gray board paper dries, it is easy to destroy the bonding force between the fibers and form Delaminated web defects and high glue consumption
Because of this shortcoming, when gray board paper is laminated with other packaging paper, it is easy to produce delamination, high scrap rate, large glue consumption, and large drying energy consumption, which greatly limits gray board paper lamination. production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1 A special adhesive for quick-drying cardboard

[0026] Components and mass percentages are preferably: oxidized starch: 17%, heavy calcium carbonate: 30%, sodium silicate: 0.6%, dispersant: 0.05%, polyvinyl alcohol: 0.15%, liquid caustic soda: 1.5%, boric acid: 0.15%, make up to 100% with water.

[0027] Preparation:

[0028] Prepare materials according to the ratio; first mix water, heavy calcium carbonate and oxidized starch at a low speed (400r / min) and stir evenly; during the stirring process, add sodium silicate, dispersant, polyvinyl alcohol, and sodium hydroxide successively and stir evenly; Then add boric acid, stir at high speed (1480r / min) for 10 minutes, then change to low speed (400r / min) and stir for 10 minutes, when the viscosity reaches the range of 6000-14000Pa·S, it is ready.

Embodiment 2

[0029] Example 2 A special adhesive for quick-drying cardboard

[0030] Components and mass percentages are: oxidized starch: 18%, heavy calcium carbonate: 29%, sodium silicate: 0.5%, dispersant: 0.06%, polyvinyl alcohol: 0.1%, liquid caustic soda: 1.7%, boric acid: 0.2 %, make up to 100% with water.

[0031] Preparation method: Prepare materials according to the ratio; first mix water, heavy calcium carbonate and oxidized starch at a low speed (500r / min) and stir evenly; during the stirring process, add sodium silicate, dispersant, polyvinyl alcohol, and sodium hydroxide in sequence Stir evenly; then add boric acid, stir at high speed (700r / min) for 30 minutes, then change to low speed (500r / min) and stir for 30 minutes, when the viscosity reaches the range of 8000-16000Pa·S, it is ready.

Embodiment 3

[0032] Example 3 A special adhesive for quick-drying cardboard

[0033] Components and mass percentages are: oxidized starch: 19%, heavy calcium carbonate: 28%, sodium silicate: 0.4%, dispersant: 0.07%, polyvinyl alcohol: 0.12%, liquid caustic soda: 2%, boric acid: 0.25 %, make up to 100% with water.

[0034] Preparation method: Prepare materials according to the ratio; first mix water, heavy calcium carbonate and oxidized starch at a low speed (680r / min) and stir evenly; during the stirring process, add sodium silicate, dispersant, polyvinyl alcohol, and sodium hydroxide in sequence Stir evenly; then add boric acid, stir at high speed (1200r / min) for 15 minutes, then change to low speed (680r / min) and stir for 15 minutes, when the viscosity reaches the range of 6000-16000Pa·S, it is ready.

[0035] The solid content of the product of the present invention is 47-60% (the glue purchased in the market is generally about 45%), and the quick-drying test is mainly applied on paper...

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Abstract

The invention belongs to the technical field of adhesives, and in particular relates to a special quick-drying adhesive for a paperboard and a preparation method of the adhesive. The adhesive comprises the following components, in percentages by mass: 17-19% of oxidized starch, 28-30% of heavy calcium carbonate, 0.4-0.6% of sodium silicate, 0.05-0.07% of a dispersing agent, 0.1-0.15% of polyvinylalcohol, 1.5-2.0% of caustic soda liquid, 0.15-0.3% of boric acid, and the balance of water, wherein a sum of the above percentages by mass is 100%. The invention also discloses the preparation methodof the adhesive. The adhesive provided by the invention has a solid content of 47%-60%, can be quickly dried in 5-7 s after coating paper, and has the advantages of the high solid content, high viscosity, quick drying, environmental protection and the like, thereby being capable of reducing or avoiding the problems of layering, insufficient adhesion, high energy consumption and the like of the paperboard in the laminating process.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to a special adhesive for quick-drying cardboard and a preparation method thereof. Background technique [0002] At present, the production of cardboard, especially gray cardboard, has not undergone sizing treatment, and its water resistance is relatively poor. The water absorption COBB value of unsized gray board paper is generally 180-300g / ㎡ per minute, while the water absorption COBB value of sized kraft cardboard packaging paper or other packaging paper is generally 20-1 minute water absorption. 60g / ㎡. Therefore, when the gray board paper is laminated with glue and other sized packaging paper, the glue will penetrate into the gray board paper in large quantities, and after the glue that penetrates into the gray board paper dries, it is easy to destroy the bonding force between the fibers and form Delaminated paper defects and high glue consumption. Because of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/10C09J129/04C09J11/08C09J11/04
CPCC08K2003/265C08L2205/03C09J11/04C09J11/08C09J103/10C08L29/04C08L33/02C08K3/34C08K3/26C08K3/38
Inventor 袁毅李彩鹏
Owner DONGGUAN JINTIAN PAPER CO LTD