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A tear-resistant polyethylene film, composite film and preparation method thereof

A polyethylene film and composite film technology, applied in the field of film materials, can solve the problem that tear resistance cannot meet the packaging requirements, etc., and achieve the effects of enhanced bonding force, high peel strength and heat sealing strength, and excellent moisture resistance.

Active Publication Date: 2018-11-13
HUANGSHAN NOVEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ordinary polyethylene film has good chemical resistance and oil resistance, but its tear resistance can no longer meet the packaging requirements of some special products

Method used

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  • A tear-resistant polyethylene film, composite film and preparation method thereof
  • A tear-resistant polyethylene film, composite film and preparation method thereof
  • A tear-resistant polyethylene film, composite film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The composite film for high-resistance, moisture-resistant and tear-resistant powder packaging of the present invention is composed of a PET printing film layer, a first extruded PE film layer, an aluminum foil layer, a second extruded PE film layer and a polyethylene film laminated sequentially along the thickness direction of the film layer. layer composition;

[0034] The polyethylene film layer is made of polyethylene film, including a corona layer, an intermediate layer and a heat-sealing layer, and the corona layer and the intermediate layer are respectively composed of the first metallocene PE, eight Composed of carbon LLDPE and processing aids, the heat-sealing layer is composed of the first metallocene PE, the second metallocene PE, silicone, slippery agent and anti-blocking agent with a mass ratio of 45:20:1.9:2.3:1.5;

[0035] The extruded PE film layer includes a first adhesive layer bonded to the aluminum foil layer and a second adhesive layer bonded to the...

Embodiment 2

[0039] The composite film for high-resistance, moisture-resistant and tear-resistant powder packaging of the present invention is composed of a PET printing film layer, a first extruded PE film layer, an aluminum foil layer, a second extruded PE film layer and a polyethylene film laminated sequentially along the thickness direction of the film layer. layer composition;

[0040] The polyethylene film layer is made of polyethylene film, including a corona layer, an intermediate layer and a heat-sealing layer, and the corona layer and the intermediate layer are respectively composed of the first metallocene PE, eight Composed of carbon LLDPE and processing aids, the heat-sealing layer is composed of the first metallocene PE, the second metallocene PE, silicone, slippery agent and opening agent with a mass ratio of 55:30:2.3:2.7:1.9;

[0041] The extruded PE film layer includes a first adhesive layer bonded to the aluminum foil layer and a second adhesive layer bonded to the PET p...

Embodiment 3

[0045] The composite film for high-resistance, moisture-resistant and tear-resistant powder packaging of the present invention is composed of a PET printing film layer, a first extruded PE film layer, an aluminum foil layer, a second extruded PE film layer and a polyethylene film laminated sequentially along the thickness direction of the film layer. layer composition;

[0046] The polyethylene film layer is made of polyethylene film, including a corona layer, an intermediate layer and a heat-sealing layer, and the corona layer and the intermediate layer are respectively composed of the first metallocene PE, eight Composed of carbon LLDPE and processing aids, the heat-sealing layer is composed of the first metallocene PE, the second metallocene PE, silicone, slip agent and anti-blocking agent with a mass ratio of 50:25:2.1:2.5:1.7;

[0047] The extruded PE film layer includes a first adhesive layer bonded to the aluminum foil layer and a second adhesive layer bonded to the PET...

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Abstract

The invention relates to a tear-resistant polyethylene film, a composite membrane and a preparation method thereof. The polyethylene film comprises a corona layer, a middle layer and a heat sealing layer, wherein the corona layer and the middle layer are each composed of first metallocene PE, octa-carbon LLDPE and processing aids, and the heat sealing layer is composed of the first metallocene PE, second metallocene PE, silicone, a slipping agent and an opening agent. The composite membrane is formed by a PET printing membrane layer, a first extruded PE membrane layer, an aluminum foil layer, a second extruded PE membrane layer and a polyethylene membrane layer which are sequentially fitted in the membrane layer thickness direction; the extruded PE membrane layer comprises a first adhesive layer in fit with the aluminum foil layer and a second adhesive layer in fit with the PET printing membrane layer or the polyethylene membrane layer, wherein the first adhesive layer is composed of third metallocene PE and adhesive resin, and the second adhesive layer is composed of the third metallocene PE and color master batch. The polyethylene film and the composite membrane disclosed by the invention have higher tear resistance strength. In addition, the composite membrane has excellent humidity resistance property.

Description

technical field [0001] The invention belongs to the field of film materials, and in particular relates to a tear-resistant polyethylene film, a composite film and a preparation method thereof. Background technique [0002] With the increasing improvement of packaging technology, people are no longer satisfied with the necessary functions of simple packaging such as protecting products and extending product shelf life, but have put forward higher and higher requirements for the protection of some special product packaging during actual use. For example, for special-purpose contents such as purified water powder, the packaging requirements not only require extremely high moisture resistance, so as to avoid the effective ingredients in the powder being stored in a high-temperature and high-humidity environment for a long time and fail to absorb moisture. Moreover, the packaging film is also required to have high tear resistance after packaging, in order to prevent children from...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/32B32B27/18B32B27/08B32B27/36B32B15/085B32B7/10B32B37/12B32B38/14C08L23/06C08L23/08C08L83/04B65D65/40B29D7/01
CPCB29D7/01B29D2009/00B32B7/10B32B15/085B32B27/08B32B27/18B32B27/32B32B27/327B32B27/36B32B37/12B32B38/145B32B2307/5825B65D65/40C08L23/06C08L23/0815C08L83/04C08L2205/02C08L2205/025
Inventor 汪洋汪学文董文辉吴旭峰
Owner HUANGSHAN NOVEL
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