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Water-based environmentally friendly adhesive for inhibiting opp and vmpet composite film aluminizing transfer

A water-based adhesive and composite film technology, applied in the directions of adhesives, adhesive types, adhesive additives, etc., can solve problems such as transfer of aluminum plating, and achieve low additional cost, low VOC residue, and high interlayer composite strength. Effect

Active Publication Date: 2020-11-06
SHANGHAI WEIKAI CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Patent 201610607907.3 developed a high-temperature cooking water-based two-component adhesive for plastic-plastic composites. Its advantage is that it has high peel strength and can meet most of the boiling and cooking requirements. Plastic composite, for the composite of OPP / VMPET aluminum-plated structure, although it has high peel strength, there will still be aluminum-plated transfer phenomenon, and the aluminum-plated transfer area is as high as 60%

Method used

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  • Water-based environmentally friendly adhesive for inhibiting opp and vmpet composite film aluminizing transfer
  • Water-based environmentally friendly adhesive for inhibiting opp and vmpet composite film aluminizing transfer
  • Water-based environmentally friendly adhesive for inhibiting opp and vmpet composite film aluminizing transfer

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Embodiment 1-5

[0031] This embodiment 1-5 provides a water-based adhesive for inhibiting the transfer of OPP / VMPET composite film aluminum plating, and the components and parts by weight of the water-based adhesive are shown in Table 1.

[0032] The preparation method is specifically:

[0033] Table 1

[0034] components Example 1 Example 2 Example 3 Example 4 Example 5 hydroxyacrylic acid 26.0 26 30.0 27.0 32 Polyester polyol 8.0 10.0 5.0 7.0 5.0 polylactic acid 7.0 7.5 6.0 7.2 6.0 Ethylenediamine blocked polyethyleneimine 0.6 0.4 0.5 0.7 0.8 Blocked isocyanate curing agent 2.0 1.8 2.5 2.7 3 Glycerol 5.0 3.5 4.5 4.0 3.0 D 0.11 0.09 0.09 0.10 0.11 Defoamer 0.17 0.15 0.13 0.16 0.10 preservative 0.1 0.08 0.06 0.05 0.04 water 52 53 52 53 51

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Abstract

The invention provides a water-based environment-friendly adhesive for inhibiting aluminum plating transfer of an OPP and VMPET composite film. The adhesive is prepared from components in parts by weight as follows: 25-35 parts of hydroxylated acrylic resin, 5-12 parts of polyester polyol, 6-7.5 parts of polylactic acid, 0.3-0.9 parts of ethanediamine blocked polyethyleneimine, 1.8-3 parts of a blocked isocyanate curing agent, 2-5 parts of glycerin, 0.08-0.15 parts of a wetting agent, 0.1-0.3 parts of a defoaming agent, 0.03-0.10 parts of a preservative and 40-60 parts of water. The prepared adhesive can be applied to conventional PET films and has the aluminum plating transfer area of 0, the application of high-function products is greatly expanded, and the additional cost caused by use of enhanced PET films before is reduced. The adhesive has high peel strength, boiling resistance and digestion resistance and high transparency, is water-based and environmentally friendly, has low VOCresidues, has the total residue quantity smaller than 1 mg and meets the food sanitation requirements.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a water-based environment-friendly adhesive for inhibiting the transfer of OPP and VMPET composite films from aluminum plating. Background technique [0002] As a composite medium between different substrates, adhesives are widely used in the field of food flexible packaging. By compounding substrates with different functional characteristics, it can meet various performance requirements. OPP / VMPET / PE is a conventional three-layer structure for food flexible packaging. The outer layer OPP mainly provides printing patterns, the middle layer VMPET (aluminized PET film) provides gloss and barrier properties, and the inner layer PE provides heat sealing performance. For ordinary applications, general solvent-based glue and water-based glue can meet the requirements of peel strength, but for products that need to be boiled and steamed, after high-pressure cooking, the aluminized la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/04C09J11/06C08G18/32C08G18/42C08G18/62C08G18/64
CPCC08G18/3206C08G18/4081C08G18/42C08G18/4283C08G18/6229C08G18/6423C09J11/06C09J175/04
Inventor 董海普李珊胡小毅
Owner SHANGHAI WEIKAI CHEM
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