Adhesive resin for multi-layer co-extruded barrier packaging and barrier structure made of it

A bonding resin and multi-layer co-extrusion technology, applied in the direction of synthetic resin layered products, adhesives, layered products, etc., can solve the problems of large haze, poor adhesion, low transparency, etc., achieve less crystal points, Excellent adhesive performance and high transparency

Active Publication Date: 2015-11-04
GUANGZHOU LUSHAN NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, attempts have been made to prepare polypropylene-based adhesive resins, but there are disadvantages such as poor adhesion, low transparency, and large haze.

Method used

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  • Adhesive resin for multi-layer co-extruded barrier packaging and barrier structure made of it

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0030] An adhesive resin for multilayer co-extruded barrier packaging, which comprises the following components in parts by weight:

[0031] Component A: 85-55 parts of propylene-ethylene-α-olefin copolymer;

[0032] Component B: 5-15 parts of vinyl elastomer;

[0033] Component C: 10-30 parts of functionalized modified propylene-alpha olefin copolymer.

[0034] The bonding resin of the present invention is prepared by the following method: after compounding the three components of A, B and C, extruding, granulating and drying through a twin-screw extruder to obtain the bonding resin.

[0035] See Table 1, the three preferred combination formulations of the adhesive resins described in Examples 1-3 of the present invention.

[0036] The proportioning table of table 1 embodiment 1-3

[0037]

[0038] Note: Component B is a vinyl elastomer with a crystallinity of 10-30%. The unit of melt index is (g / 10min).

Embodiment 1

[0039] In Example 1, the component A is a propylene-ethylene-butene copolymer; the component B is an ethylene-butene copolymer with a degree of crystallinity of 10%; and the component C uses maleic anhydride as a modified unit It is obtained by modifying the propylene-butene copolymer.

Embodiment 2

[0040] In Example 2, the component A is a propylene-ethylene-hexene copolymer; the component B is an ethylene-hexene copolymer with a degree of crystallinity of 20%; and the component C uses maleic anhydride as a modified unit It is obtained by modifying the propylene-hexene copolymer.

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Abstract

The invention discloses an adhesive resin for multilayer coextrusion barrier package and a barrier structure prepared from the same. The adhesive resin comprises the following components in parts by weight: 85-55 parts of propylene-ethylene-alpha olefin copolymer, 5-15 parts of vinyl elastomer and 10-30 parts of functionalization modified propylene-alpha olefin copolymer. The barrier structure comprisesa barrier layer, wherein at least one surface of the barrier layer is bonded with a polypropylene layer through an adhesive layer; the adhesive layer is the adhesive resin in the first target; the barrier layer is an ethylene-vinyl alcohol copolymer or nylon; and the adhesive resin accounts for 10-15 wt% of the barrier structure. The adhesive resin has the advantages of favorable bonding property, favorable working properties, fewer crystal points, high transparency and the like.

Description

technical field [0001] The invention relates to an adhesive resin for multi-layer co-extrusion barrier packaging and the barrier structure made by it, which can be used for multi-layer co-extrusion barrier packaging based on nylon / polypropylene, ethylene-vinyl alcohol copolymer / polypropylene the adhesive layer. Background technique [0002] With the advancement of science and technology and the development of the times, polymer modified materials have been more and more widely used in various fields of production and life. In recent years, multilayer films of polymer materials have been widely used in the packaging industry. Polymers used in multilayer films include various resins such as polypropylene, polyethylene, nylon, and ethylene-vinyl alcohol copolymers, which provide multilayer films with puncture resistance, corrosion resistance, etc., among which nylon and ethylene-vinyl alcohol copolymers are Often used to prevent oxygen and moisture from passing through the mu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J123/08C09J123/14B32B27/08B32B27/32B32B27/30B32B7/12B32B27/34
Inventor 刘宝玉唐舫成王明辉汪加胜
Owner GUANGZHOU LUSHAN NEW MATERIALS
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