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Multifunctional casting polyolefine firmness-increasing film

A polyolefin and multi-functional technology, applied in the field of packaging film products, can solve the problems of poor film stiffness and high production cost, and achieve the effects of high stiffness, low use cost and good hand feeling.

Inactive Publication Date: 2010-03-03
湖北慧狮塑业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention mainly solves the technical problems of poor stiffness effect and high production cost existing in the existing films used in the field of packaging applications.

Method used

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  • Multifunctional casting polyolefine firmness-increasing film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: 100 parts (wherein the weight ratio of linear low density polyethylene and homopolymerized high density polyethylene is 0.67: 1) of linear low density polyethylene and high density polyethylene by weight ratio (every part of 5 kg , the same below), 43 parts of ethylene-propylene elastomer, 0.5 part of silica powder, and 0.5 part of oleic acid amide are mixed and put into the first extruder hopper and the second extruder hopper of the cast film production line respectively ; 100 parts of polypropylene resin, 0.2 part of sorbitol, 0.4 part of oleic acid amide, 4 parts of polyethylene-octene co-elastomer, and 0.3 part of monoglyceride are mixed and dropped into the third extruder hopper by weight; The molten material from the three extruders is extruded through a material collector and a T-shaped die, then cooled and shaped, the outer layer is corona treated, and the edge is trimmed to obtain a product with a heat-sealing layer, a core layer and a corona layer...

Embodiment 2

[0019] Embodiment 2: 100 parts by weight of the composition of linear low-density polyethylene and high-density polyethylene (wherein the weight ratio of linear low-density polyethylene and homopolymerized high-density polyethylene is 2: 1), ethylene-propylene elasticity 30 parts of body, 0.3 part of silicon dioxide powder, and 0.2 part of oleic acid amide are mixed and put into the first extruder hopper and the second extruder hopper of the cast film production line respectively; part, 0.8 part of sorbitol, 6 parts of polyethylene-octene co-elastomer, 0.3 part of oleic acid amide, and 0.2 part of monoglyceride are mixed and put into the third extruder hopper; The material is extruded through a material collector and a T-shaped die, then cooled and shaped, the outer layer is treated with corona, and the edge is trimmed to obtain the film product of the present invention with a heat-sealing layer, a core layer and a corona layer.

Embodiment 3

[0020] Embodiment 3: 100 parts by weight of the composition of linear low-density polyethylene and high-density polyethylene (wherein the weight ratio of linear low-density polyethylene and homopolymerized high-density polyethylene is 4: 1), ethylene-propylene elasticity 15 parts of body, 0.1 part of silica powder, and 0.1 part of oleic acid amide are mixed and put into the first extruder hopper and the second extruder hopper of the cast film production line respectively; part, 1.1 parts of sorbitol, 7 parts of polyethylene-octene co-elastomer, 0.2 part of oleic acid amide, and 0.1 part of monoglyceride are mixed and put into the third extruder hopper; The material is extruded through a material collector and a T-shaped die, then cooled and shaped, the outer layer is treated with corona, and the edge is trimmed to obtain the film product of the present invention with a heat-sealing layer, a core layer and a corona layer.

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Abstract

The invention relates to a multifunctional casting polyolefine firmness-increasing film which is formed by compounding a heat sealing layer, a core layer and a corona layer. The corona layer or the heat sealing layer mainly comprises the following components in portions by weight: 100 portions of polyethylene resin, 10-60 portions of compatilizer, 0.1-0.5 portion of anti-blocking agent and 0.1-0.5portion of slipping agent; and the core layer mainly comprises the following components in portions by weight: 100 portions of polypropylene resin and 0.1-1.1 portions of nucleating agent. The multifunctional casting polyolefine firmness-increasing film has the characteristics of low temperature, favorable heat sealing performance, high firmness, high elastic modulus and the like, not only combines the advantages of polyethylene and polypropylene films, but also overcomes the defects of polyethylene or polypropylene composite films, is widely applied for packing facial tissues, foods and other products, and is particularly suitable for quick and automatic package of products.

Description

technical field [0001] The invention relates to a packaging film product, in particular to a multifunctional casting polyolefin stiffening film. Background technique [0002] Most of the films currently on the market for packaging applications are polyethylene or polypropylene films. However, due to the low stiffness of polyethylene film, it is easy to limit its production capacity due to machine jams during high-speed packaging. If the stiffness is increased simply by increasing the thickness of polyethylene film, it will not only have certain limitations, but will also cause corresponding problems. Increase the price of packaging. If it is dry-laminated with other films with better stiffness, it will not only increase the price, but also cause solvent residues, which will adversely affect product performance and use, and it is not environmentally friendly. Relatively speaking, polypropylene has high transparency, good thickness uniformity, and high stiffness, but its low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/18B32B27/32C08L23/06B65D65/40
Inventor 王焕清罗建明吴朋袁向华卢长伟曾志明伍冬瑞
Owner 湖北慧狮塑业股份有限公司
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