Adhesive for corrugated board and preparation method of adhesive

A corrugated board and adhesive technology, applied in the direction of adhesive types, starch adhesives, polymer adhesive additives, etc., can solve the problem of affecting adhesive bonding strength, reducing bonding effect, and affecting production efficiency. and other problems to achieve the effect of reducing delamination, reducing cracking, and increasing curing rate

Active Publication Date: 2019-10-08
广东新力德包装科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Starch adhesives use natural starch and water as the main raw materials, and are made into adhesives through gelatinization, complexation and other processes; but because starch adhesives contain a large amount of water, this requires a long curing time, Affect the production efficiency; and in the process of curing, if the water evaporates incompletely, the residual water in the joint of the corrugated cardboard will also affect the adhesive strength of the adhesive; in addition, in order to improve the drying speed, when using high temperature drying When drying and dehydrating in the same way, it is easy to cause the adhesive to crack and reduce its bonding effect

Method used

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  • Adhesive for corrugated board and preparation method of adhesive

Examples

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preparation example 1

[0034] Preparation example 1: take 30kg bagasse, soak it in 50kg, 25wt% sodium hydroxide solution for 10h, then clean the soaked bagasse with clear water, add 4kg sodium bisulfate and 3kg dodecyl aluminum potassium sulfate water, heated to 80°C, dried for 4 hours, crushed and sieved to obtain pretreated bagasse powder.

preparation example 2

[0035] Preparation example 2: take 35kg of bagasse, soak it in 55kg, 28wt% sodium hydroxide solution for 13h, then clean the soaked bagasse with clear water, add 5kg of sodium bisulfate and 4kg of dodecyl Aluminum potassium sulfate water, heated to 85°C, dried for 5 hours, crushed and sieved to obtain pretreated bagasse powder.

preparation example 3

[0036] Preparation example 3: take 40kg of bagasse, soak it in 60kg, 30wt% sodium hydroxide solution for 16h, then clean the soaked bagasse with clear water, add 6kg of sodium bisulfate and 5kg of dodecyl aluminum potassium sulfate water, heated to 90°C, dried for 6 hours, crushed and sieved to obtain pretreated bagasse powder.

[0037] Two, the embodiment

[0038] The cornstarch in the following examples is selected from the industrial grade corn amylase whose product number is 968452 whose content ≥ 99% is improved by Suzhou Longqing Chemical Technology Co., Ltd; .

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Abstract

The invention discloses an adhesive for a corrugated board and a preparation method of the adhesive and belongs to the technical field of adhesives. According to key points of the technical scheme, the adhesive for the corrugated board comprises the following components in parts by weight: 380-420 parts of corn starch, 47-49 parts of sodium hydroxide, 7-9 parts of an enhancer, 4-5 parts of a stabilizer, 4.5-5.5 parts of borax, 3-4 parts of a drier and 1-2 parts of a mildew preventive. The drier in the invention can achieve effects of obviously promoting evaporation of water and shortening curing time; and by matching the enhancer and the stabilizer, the crosslinking degree among starch molecules can be improved, tenacity and adhesive strength of the adhesive are improved, an adhesion cracking problem caused by excessive drying is avoided, so that the drying process is simple, and operations are facilitated.

Description

technical field [0001] The invention relates to the technical field of adhesives, more specifically, it relates to an adhesive for corrugated cardboard and a preparation method thereof. Background technique [0002] Corrugated cardboard, also known as corrugated cardboard, is made of at least one layer of corrugated paper and one layer of cardboard. It has good elasticity and extensibility. It is mainly used to make cartons, the sandwich of cartons and other packaging materials for fragile goods. Adhesives commonly used in the production of corrugated cardboard include sodium silicate, polymer latex and starch; Poor, alkaline, and corrosive; polymer latex adhesives have good adhesive properties, but their cost is high and they are not easy to degrade; and starch adhesives use starch as the main raw material and have the advantages of bonding With the advantages of high strength, light weight and no pollution, it has become the main adhesive for corrugated cardboard. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J103/02C09J11/04C09J11/08C09J11/06
CPCC08L2205/035C09J11/04C09J11/06C09J11/08C09J103/02C08L97/02C08L97/005C08L1/286C08K5/21C08K5/053C08K3/34C08K3/346C08K5/57C08K5/06
Inventor 卿笃艳
Owner 广东新力德包装科技有限公司
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