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Ultraviolet crosslinked polyethylene heat shrinkage package film and preparation method thereof

A technology of cross-linked polyethylene and polyethylene film, which is applied in packaging, wrapping paper, transportation and packaging, etc., can solve the problems of high energy consumption and high cross-linking cost, and achieve cross-linking cost reduction, convenient cross-linking operation, and good The effect of applying the foreground

Inactive Publication Date: 2015-03-04
HONGLONGJIANG ORIENT SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of high crosslinking cost and high energy consumption in existing multilayer polyethylene crosslinked heat shrinkable films

Method used

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  • Ultraviolet crosslinked polyethylene heat shrinkage package film and preparation method thereof

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specific Embodiment approach 1

[0017] Specific embodiment 1: In this embodiment, an ultraviolet light cross-linked polyethylene heat shrinkable packaging film is formed by superposing three layers of polyethylene film; the polyethylene film is composed of 20 to 70 parts by weight of linear low density polyethylene, 10-30 parts of low-density polyethylene, 10-30 parts of metallocene polyethylene and 10-20 parts of ultraviolet photoinitiator masterbatch; wherein the ultraviolet photoinitiator masterbatch is dried from 100 parts by weight The linear low-density polyethylene, 0.04-1.6 parts of photoinitiator, 2-16 parts of auxiliary crosslinking agent and 0.02-0.8 parts of antioxidant.

[0018] The ultraviolet light cross-linked polyethylene heat shrinkable packaging film of this embodiment does not require special and complex cross-linking equipment, which reduces the cost of cross-linking. Through cross-linking, its heat resistance, environmental resistance, and chemical resistance are improved, and it has very ...

specific Embodiment approach 2

[0021] Specific embodiment two: this embodiment is different from specific embodiment one in that: the photoinitiator is benzoin dimethyl ether, dialkoxy acetophenone, anthrone, benzophenone and benzophenone derivatives One or a mixture of several of them, when it is a mixture, mix at any ratio. Others are the same as the first embodiment.

specific Embodiment approach 3

[0022] Specific embodiment three: this embodiment is different from specific embodiment one or two in that: the co-crosslinking agent is triallyl isocyanurate, acrylate, trimethacrylate, tricarboxymethyl propyl, double Ethylene methacrylate, trimethyl diisocyanate, polycarbodiimide and polypropylene glycol glycidyl ether, or a mixture of several of them, are mixed at any ratio when they are mixtures. Others are the same as the first or second embodiment.

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Abstract

The invention discloses an ultraviolet crosslinked polyethylene heat-shrinkage package film and a preparation method thereof, relates to a polyethylene heat shrinkage package film and a preparation method thereof, which aims to solve the problems of high cross-linking cost and high energy consumption of the existing prepared multi-layer polyethylene heat shrinkage film. The ultraviolet crosslinked polyethylene heat-shrinkage package film is formed by the superposition of three polyethylene films, wherein the polyethylene film is prepared from the following raw materials in parts by weight: linear low-density polyethylene, low-density polyethylene, metallocene polyethylene and ultraviolet light initiator master batches. The preparation method of the ultraviolet crosslinked polyethylene heat-shrinkage package film comprises the following steps: uniformly mixing all layers of raw materials, extruding the raw materials by a three-layer co-extrusion device, cooling by water, carrying out ultraviolet irradiation cross-linking, then preheating and blowing a film, cooling by air and shaping to obtain the ultraviolet crosslinked polyethylene heat-shrinkage package film. The method is used for preparing the ultraviolet crosslinked polyethylene heat-shrinkage package film.

Description

Technical field [0001] The invention relates to a polyethylene heat shrinkable packaging film and a preparation method thereof. Background technique [0002] At present, as a packaging material with excellent performance, multilayer heat shrinkable film has been widely used in various fields of people's life, such as food, industrial products and other commodity packaging. Compared with traditional packaging materials, multi-layer heat shrinkable film materials have many advantages: For example, multi-layer heat shrinkable film is heated and shrinks to wrap the surface of the object, which can play the role of insulation, moisture-proof, sealing, and protection; The layer of heat shrinkable film is heated to shrink and wrap the surface of the product to keep the free appearance shape of the product, make the product appearance beautiful and save space. [0003] Multi-layer co-extruded cross-linked polyethylene heat shrinkable film is a new type of high shrinkage biaxially stretche...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/18B32B27/32B65D65/40C08L23/08C08L23/06C08J3/22B29D7/01
CPCB32B27/20B32B27/32B32B2250/242B32B2307/308B32B2323/04B32B2323/043B32B2439/06B65D65/40
Inventor 刘建勋鲍文波刘岩马宝红高苏亮季洋姜国发
Owner HONGLONGJIANG ORIENT SCI & TECH
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