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Solvent-free composite PET/PE (Polyethylene Terephthalate/Polyethylene) film and preparation process thereof

A preparation process and solvent-free technology, applied in the field of solvent-free composite PET/PE film and its preparation process, can solve the problems of many harmful waste gas, poor bonding effect, environmental pollution, etc., and achieve high transparency, good bonding effect, thin effect

Active Publication Date: 2017-05-10
烟台美丰塑料制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent uses acrylic glue as a binder, which has poor bonding effect. It needs to add organic solvents to dilute the binder during bonding. The production process releases a large amount of VOCs, and the drying process consumes a lot of energy, has a lot of harmful exhaust gas, and pollutes the environment.

Method used

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  • Solvent-free composite PET/PE (Polyethylene Terephthalate/Polyethylene) film and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A solvent-free composite PET / PE film, comprising an outer layer, an adhesive layer and a base layer; wherein, one side of the adhesive layer is bonded to the outer layer, and the other side is bonded to the base layer; the outer layer is made of PET resin; The base layer is prepared from PE resin; the adhesive layer is prepared from a solvent-free adhesive; the solvent-free adhesive is composed of component A and component B; component A includes the following components: modified cashew nut shell oil 30 parts of permanent phenolic resin, 25 parts of ethylene-vinyl acetate copolymer, and 1 part of oxetane; component B includes the following components: diethylenetriamine, isophoronediamine.

[0030] Among them, the thickness of the outer layer is 1.8 μm; the thickness of the base layer is 1.2 μm; the content of vinyl acetate in ethylene-vinyl acetate copolymer is 60%; the mass ratio of diethylene triamine and isophorone diamine is 1:1 ; The preparation method of compone...

Embodiment 2

[0032] A solvent-free composite PET / PE film, comprising an outer layer, an adhesive layer and a base layer; wherein, one side of the adhesive layer is bonded to the outer layer, and the other side is bonded to the base layer; the outer layer is made of PET resin; The base layer is prepared from PE resin; the adhesive layer is prepared from a solvent-free adhesive; the solvent-free adhesive is composed of component A and component B; component A includes the following components: modified cashew nut shell oil 45 parts of permanent phenolic resin, 40 parts of ethylene-vinyl acetate copolymer, and 3 parts of oxetane; component B includes the following components: vinyltriamine.

[0033] Wherein, the thickness of the outer layer is 5 μm; the thickness of the base layer is 4 μm; the content of vinyl acetate in the ethylene-vinyl acetate copolymer is 80%; the preparation method of component A is: modifying the cashew nut shell oil of the mass parts Resin and ethylene-vinyl acetate c...

Embodiment 3

[0035] A solvent-free composite PET / PE film, comprising an outer layer, an adhesive layer and a base layer; wherein, one side of the adhesive layer is bonded to the outer layer, and the other side is bonded to the base layer; the outer layer is made of PET resin; The base layer is prepared from PE resin; the adhesive layer is prepared from a solvent-free adhesive; the solvent-free adhesive is composed of component A and component B; component A includes the following components: modified cashew nut shell oil 38 parts of permanent phenolic resin, 32 parts of ethylene-vinyl acetate copolymer, 2 parts of oxetane; component B includes the following components: diethylaminopropylamine.

[0036] Wherein, the thickness of the outer layer is 3.5 μm; the thickness of the base layer is 2.1 μm; the content of vinyl acetate in the ethylene-vinyl acetate copolymer is 70%; the preparation method of component A is: changing the cashew nut shell liquid phenolic resin and ethylene-vinyl acetat...

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Abstract

The invention discloses a solvent-free composite PET / PE (Polyethylene Terephthalate / Polyethylene) film and a preparation process thereof. The solvent-free composite PET / PE film comprises an outer layer, a bonding layer and a base layer, wherein one side of the bonding layer is bonded with the outer layer, and the other side of the bonding layer is bonded with the base layer; the outer layer is prepared from PET resin; the base layer is prepared from PE resin; the bonding layer is prepared from a solvent-free bonding agent; the solvent-free bonding agent is compounded by a component A and a component B; the component A comprises cashew nut shell oil modified phenolic resin, an ethylene-vinyl acetate copolymer and oxetane; the component B comprises aliphatic amine; the preparation process comprises the following steps: coating a base layer film with the solvent-free bonding agent to obtain the bonding layer; compounding an outer layer film with the bonding layer; curing an obtained composite film semi-finished product to obtain the solvent-free composite PET / PE film. The solvent-free composite PET / PE film prepared by the process provided by the invention has the advantages of thin thickness, high transparency, high peeling strength and good packaging effect.

Description

technical field [0001] The invention relates to the field of layered products, in particular to a solvent-free composite PET / PE film and a preparation process thereof. Background technique [0002] In recent years, with the enhancement of environmental protection awareness, green packaging materials and processes are increasingly favored by the composite film packaging industry and flexible packaging end users. The solvent-free composite process uses a solvent-free binder, which can effectively reduce the release of VOCs (volatile organic compounds), does not require large and complicated heating blasts, exhaust gas exhaust devices, and reduces energy loss caused by drying. The process is simple , The equipment occupies a small area and is an advanced green composite process. [0003] PET resin, also known as polyethylene terephthalate, is a milky white or light yellow, highly crystalline polymer. It has excellent physical and mechanical properties in a wide temperature ran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/32B32B27/36B32B7/12B32B37/06B32B37/10B32B37/12B65D65/40C09J161/14C09J123/08C09J11/06
CPCB32B7/12B32B27/08B32B27/32B32B27/36B32B37/06B32B37/10B32B37/1284B32B2250/24B32B2307/412B32B2553/00B65D65/40C09J11/06C09J161/14C08L23/0853C08K5/1535C08K5/17
Inventor 陈海燕何秀娟
Owner 烟台美丰塑料制品有限公司
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