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A kind of polyurethane adhesive for laminating film with good heat resistance and good compatibility with ink

A technology for polyurethane adhesives and films, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of heat resistance of anti-solubilizing ink glue, affect efficiency, and easily appear ink-solubilizing and other problems to achieve the effect of shortening the curing time, improving production efficiency and improving functionality

Active Publication Date: 2022-07-08
HUBEI HUITIAN NEW MATERIALS STOCK CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The solvent-free polyurethane adhesives currently used in the market have good heat resistance and are prone to ink dissolution, while the heat resistance of ink-dissolving glue has problems, which leads to the need for customers to switch the type of glue when using it, which affects the efficiency.

Method used

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  • A kind of polyurethane adhesive for laminating film with good heat resistance and good compatibility with ink
  • A kind of polyurethane adhesive for laminating film with good heat resistance and good compatibility with ink
  • A kind of polyurethane adhesive for laminating film with good heat resistance and good compatibility with ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]After fully mixing the A component and B component shown in Table 1 in a weight ratio of 1:1, test the aging time, peel strength, appearance after heat sealing, heat sealing strength and surface appearance, and the test material used is nylon printing film. For the composite polyethylene film, the ink used is a polyurethane integrated ink, and the results are shown in Table 4.

[0033] The composition of the polyurethane adhesive for lamination provided by the embodiment 1 of table 1

[0034]

Embodiment 2

[0036] After fully mixing the A component and the B component shown in Table 2 in a weight ratio of 1:1, the aging time, peel strength, appearance after heat sealing, heat sealing strength and surface appearance were tested, and the test material used was nylon printing film. For the composite polyethylene film, the ink used is a polyurethane integrated ink, and the results are shown in Table 4.

[0037] The composition of the polyurethane adhesive for lamination provided by the embodiment 2 of table 2

[0038]

Embodiment 3

[0040] After fully mixing the A component and B component shown in Table 3 according to the weight ratio of 1:1, test the aging time, peel strength, appearance after heat sealing, heat sealing strength and surface appearance, and the test material used is nylon printing film. For the composite polyethylene film, the ink used is a polyurethane integrated ink, and the results are shown in Table 4.

[0041] The composition of the polyurethane adhesive for lamination provided by the embodiment 3 of table 3

[0042]

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Abstract

The invention discloses a polyurethane adhesive for laminating film with good heat resistance and good compatibility with ink. The adhesive is prepared by mixing A component and B component in a weight ratio of 1:1. Component A consists of 35-45 parts by weight of polyether polyol C, 3-10 parts by weight of bisphenol A modified diol, 50 parts by weight of polyisocyanate and 5 parts by weight of polyisocyanate prepolymer, wherein bisphenol A The modified diol is bisphenol A with additional propylene oxide or ethylene oxide compound; component B is composed of 50-70 parts by weight of polyether polyol C, 10-30 parts by weight of polyester polyol C, and 0-15 parts by weight of polyester polyol C. part of polyisocyanate, 4 parts by weight of bisphenol A modified diol, 0.5 part by weight of coupling agent and 0-0.01 part by weight of auxiliary agent. The adhesive can achieve normal temperature curing for the bonding between plastic films and plastic films, plastic films and aluminum foils, and has good heat resistance.

Description

technical field [0001] The invention belongs to the technical field of polyurethane adhesives, and particularly relates to a polyurethane adhesive for laminating films with good heat resistance and good compatibility with inks. Background technique [0002] With the improvement of living standards, there are many kinds of food packaging. Exquisite packaging can not only ensure the safety of food, but also attract the attention of customers and improve the competitiveness of products. In the face of complex flexible packaging structure, higher requirements are put forward for glue. The sealing performance of the packaging bag (heat sealing edge), the printing requirements on the surface of the packaging bag (dissolving ink) and other requirements are the focus of packaging factories. In the packaging and printing industry, a large amount of organic solvents will be discharged into the atmosphere, causing serious environmental pollution. Solvent-based two-component polyureth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/08C09J175/06C08G18/79C08G18/76C08G18/66C08G18/48C08G18/42C08G18/32
CPCC09J175/08C09J175/06C08G18/794C08G18/7671C08G18/6674C08G18/6607C08G18/4825C08G18/4252C08G18/3215Y02W30/80
Inventor 吴燕锋胡洪国宋磊磊郭宁赵勇刚章锋
Owner HUBEI HUITIAN NEW MATERIALS STOCK CO LTD