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Polyethylene film for hot-pressing compositing

A polyethylene film and polyethylene technology, applied in the field of polyethylene film, can solve problems such as poor tear resistance, and achieve the effect of removing solvent pollution and saving the glue coating process

Active Publication Date: 2012-08-08
GUANGDONG DECRO FILM NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The paper-plastic coated parts obtained by this paper-plastic coating technology have poor tear resistance, and the tear strength of the biaxially oriented polypropylene film is almost zero. or below coated paper, offset paper, the problem is more prominent

Method used

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  • Polyethylene film for hot-pressing compositing
  • Polyethylene film for hot-pressing compositing

Examples

Experimental program
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Effect test

Embodiment 1

[0022] A polyethylene film for hot-pressing composite, the film comprises two layers of macromolecular materials, the two layers of macromolecular materials are a matrix layer (1) and a thermocompression composite layer (2), the matrix layer (1) is Film-grade polyethylene, the hot-press composite layer (2) is a blend of ethylene-alpha olefin copolymer and its maleic anhydride graft modified product with an alpha olefin weight content of 15%, and the hot-press composite layer ( 2) includes a re-blend of ethylene-1-butene copolymer and hydrogenated petroleum resin. The polyethylene is a biaxially stretched film-grade polyethylene with a bimodal molecular weight distribution, and the hot-pressed composite surface of the film is subjected to surface polarization treatment and formed at one time by a co-extrusion biaxial stretching process.

Embodiment 2

[0024] A polyethylene film for thermocompression lamination, which comprises a matrix layer and a thermocompression lamination layer. The matrix layer is ethylene-1-hexene copolymer, and the hot-press composite layer can directly realize hot-press composite with paper or pre-printed paper containing ink. The material of the hot-press composite layer is ethylene-α Olefin copolymers, including ethylene-1-butene copolymers and ethylene-1-octene copolymers.

Embodiment 3

[0026] A polyethylene film for thermocompression lamination, which comprises a matrix layer and a thermocompression lamination layer. The base layer is biaxially stretched film-grade polyethylene or ethylene-1-hexene copolymer, and the heat-pressed composite layer can be directly laminated with paper or pre-printed paper containing ink. The material of the heat-pressed composite layer is α-olefin weight The ethylene-alpha olefin copolymer with a content of 25% includes: the re-blend of the maleic anhydride graft modified product of the ethylene-1-butene copolymer and hydrogenated petroleum resin.

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Abstract

The invention relates to a polyethylene film for hot-pressing compositing, particularly to a polyethylene film which can be composited with paper or ink-containing pre-printing paper directly by hot pressing. The polyethylene film at least comprises a substrate layer and a hot-pressing compositing layer, wherein the substrate layer is made of biaxially oriented film class polyethylene or ethane-1-ethane copolymer; the hot-pressing compositing layer can be directly composited with paper or ink-containing pre-printing paper by hot pressing, and made of ethane-Alpha olefin copolymer in which the weight percentage of Alpha olefin is 15-25 % or MAH (maleic anhydride) grafted modifier of the ethane-Alpha olefin copolymer or a mixture of the two above, wherein the hot-pressing compositing layer comprises the following compositions:(a) an ethylene-1-butylene copolymer; or (b) an ethylene-1-octylene copolymer; or (c) the MAH grafted modifier of the ethylene-1-butylene copolymer; or (d) the MAH grafted modifier of the ethylene-1-octylene copolymer; or e) any combination of (a), (b), (c) and (d); or (f) the mixture of (e) and hydrogenated petroleum resin.

Description

technical field [0001] The invention relates to a polyethylene film for heat-compression lamination, in particular to a polyethylene film which can directly realize heat-compression lamination with paper or pre-printed paper containing ink. Background technique [0002] The production process of polyethylene film includes blown film method and flat film method. In the prior art, blown film method is the main method. In the flat film method, it is divided into two types: stepwise biaxial stretching and synchronous biaxial stretching, among which stepwise biaxial stretching and two stretches (that is, longitudinal stretching first and then transverse stretching) are the main ones. [0003] At present, there are mainly the following methods for paper-plastic compounding in industry: one is the glue method (dry compounding and wet compounding), but this method will emit more toxic solvents or volatiles, thus Cause environmental pollution; The 2nd is solventless composite method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/30
Inventor 徐文树朱健民
Owner GUANGDONG DECRO FILM NEW MATERIALS