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Adhesive for imperial crown cap polyolefin pad for beer or beverage and preparation thereof

A crown cap and adhesive technology, which is applied in the direction of adhesive types, polymer adhesive additives, non-polymer adhesive additives, etc., can solve the problem of not being able to bond polyolefin bottle cap gaskets, and achieve Good environmental performance and resource saving effect

Inactive Publication Date: 2009-08-12
西安昌泰化工厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The crown gaskets of a few domestic brands are also beginning to use polyolefin (such as PE) materials. It is a trend to use polyolefin materials instead of PVC materials in crown gaskets. However, the adhesives that match them are all imported. , and the original adhesive for bonding PVC bottle cap gaskets cannot bond polyolefin bottle cap gaskets at all

Method used

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  • Adhesive for imperial crown cap polyolefin pad for beer or beverage and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The adhesive of the crown cap polyolefin gasket and the preparation method thereof are compounded from raw materials in parts by weight:

[0030] Preparation of epoxy resin A solution: first add methyl isobutyl ketone, xylene, butanol, and butyl acetate into the mixer at a ratio of 25:45:15:15, and stir at room temperature for 30-40 minutes. become a homogeneous mixed solvent. Add 55.2 parts of it and 26.5 parts of epoxy resin A (609) into the reaction kettle with stirring, heating, heat preservation, cooling, and can carry out reflux and water separation device, gradually heat up to the reflux temperature, at 100 ~ Stir, heat, keep warm, reflux, and separate water at 140°C for 3-4 hours until the epoxy resin A is completely dissolved, cool to 40-60°C, and filter to make an epoxy resin A solution.

[0031] Add 81.7 parts of the above-mentioned epoxy resin A solution, 6 parts of epoxy resin B, 3.5 parts of polyethylene wax dispersion, 0.8 parts of colorant, and 8 parts ...

Embodiment 2

[0034] The raw materials of the adhesive are proportioned in parts by weight: 37.5 parts of epoxy resin A, 4.5 parts of epoxy resin B, 46 parts of mixed solvent, 4.5 parts of polyethylene wax dispersion, 1.1 parts of coloring agent, solidified 6.4 parts of agent, and used curing agent is amino polyurethane, and all the other materials that adopt are with embodiment 1.

[0035] The preparation process of the adhesive is the same as in Example 1.

Embodiment 3

[0037] The proportioning of each raw material of the adhesive is in parts by weight: 43 parts of epoxy resin A, 3 parts of epoxy resin B, 43 parts of mixed solvent, 5 parts of polyethylene wax dispersion, 1.1 parts of coloring agent, 4.9 parts of curing agent, And the materials used are the same as in Example 2. The preparation process of the adhesive is the same as in Example 1.

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Abstract

The invention relates to the field of chemical engineering of adhesives, in particular to an adhesive for crown cap polyolefin gaskets for beer and beverage and a preparation method thereof. At present, crown cap gaskets for the national beer and beverage are mostly made of polyvinyl chloride (PVC) material, and compositions of the polyvinyl chloride material contain chemical substances which are harmful to human bodies. The adhesive for the crown cap polyolefin gaskets for the beer and beverage is prepared by compounding the following raw materials by weight portion: 18 to 43 portions of epoxy resin A, 3 to 11 portions of epoxy resin B, 43 to 57 portions of mixed solvent, 3 to 5 portions of polyethylene wax dispersion, 0.7 to 1.1 portions of colorant, and 4.9 to 10.3 portions of curing agent. The product has the advantages of no harm to human bodies, good hygienic property, firm adhesion and good sealing performance, realizes the successful substitution of new materials at the same time, and pushes the popularization and application of the crown cap polyolefin gaskets for the beer and beverage.

Description

technical field [0001] The invention relates to the technical field of adhesive chemical industry, in particular to an adhesive for crown cap polyolefin gaskets for beer and beverages and a preparation method thereof. Background technique [0002] At present, most of the materials for domestic beer and beverage crown cover gaskets are made of polyvinyl chloride (PVC). Because its ingredients contain plasticizers (mainly phthalates), stabilizers, and residual vinyl chloride monomers in PVC, it is a chemical substance restricted and concerned by EU food packaging materials. On the basis of Directive 2007 / 72 / EC, the European Union promulgated Directive 2007 / 19 / EC to evaluate and control chemicals in food packaging materials: it stipulates that phthalates can only be used in limited quantities as plasticizers Water-based food, not oily food. EU Directive 94 / 62 / EC: Substitute restricted or questionable materials with safe materials. Vinyl chloride monomer of PVC is listed as a...

Claims

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Application Information

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IPC IPC(8): C09J163/02C09J11/06C09J11/08
Inventor 赵开学
Owner 西安昌泰化工厂
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