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High-transparency easy-to-open barrier film

An easy-to-open and barrier film technology, which is applied in the field of polymers, can solve the problems of transparency and easy-to-open, surface sticking and melting, etc., achieve good transparency and easy-to-open, reduce friction coefficient and bond Resistance, effect of increasing affinity

Pending Publication Date: 2021-01-05
广州凌玮科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, plastic films will contact under the action of temperature and pressure, resulting in surface sticking and melting; extremely smooth films may also be blocked due to complete air isolation and close contact during processing, use or storage, resulting in Its transparency and ease of opening cannot meet the requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A highly transparent and easy-to-open barrier film, including a first PE film layer, a first adhesive layer, a PEN film layer, a second adhesive layer, a barrier layer, and a third adhesive layer arranged sequentially from inside to outside in a co-extruded manner. Layer, PEI film layer, the fourth adhesive layer and the second PE film layer, the first PE film layer is composed of low-density polyethylene, metallocene linear low-density polyethylene, Composed of high-density polyethylene, silicon-aluminum film opening agent; the second PE film layer is composed of low-density polyethylene, medium-density polyethylene, and silicon-aluminum film opening agent with a mass ratio of 17:2:1.

[0032] Wherein, the silicon-aluminum film opening agent is prepared by the following method:

[0033] At a temperature of 30°C, inject 50L of bottom water and 45 moles of aluminum sulfate into the stirred reaction vessel. After the aluminum sulfate is completely dissolved, add sulfuric ...

Embodiment 2

[0039] A highly transparent and easy-to-open barrier film, including a first PE film layer, a first adhesive layer, a PEN film layer, a second adhesive layer, a barrier layer, and a third adhesive layer arranged sequentially from inside to outside in a co-extruded manner. Layer, PEI film layer, the fourth adhesive layer and the second PE film layer, the first PE film layer is composed of low-density polyethylene, metallocene linear low-density polyethylene, Composed of high-density polyethylene, silicon-aluminum film opening agent; the second PE film layer is composed of low-density polyethylene, medium-density polyethylene, and silicon-aluminum film opening agent with a mass ratio of 17:2:1.

[0040] Wherein, the silicon-aluminum film opening agent is prepared by the following method:

[0041]At a temperature of 60°C, inject 50L of bottom water and 15 moles of aluminum nitrate into the stirred reaction vessel. After the aluminum nitrate is completely dissolved, add sulfuric a...

Embodiment 3

[0046] A highly transparent and easy-to-open barrier film, including a first PE film layer, a first adhesive layer, a PEN film layer, a second adhesive layer, a barrier layer, and a third adhesive layer arranged sequentially from inside to outside in a co-extruded manner. Layer, PEI film layer, the fourth adhesive layer and the second PE film layer, the first PE film layer is composed of low-density polyethylene, metallocene linear low-density polyethylene, Composed of high-density polyethylene, silicon-aluminum film opening agent; the second PE film layer is composed of low-density polyethylene, medium-density polyethylene, and silicon-aluminum film opening agent with a mass ratio of 17:2:1.

[0047] Wherein, the silicon-aluminum film opening agent is prepared by the following method:

[0048] At a temperature of 40°C, inject 50L of bottom water and 30 moles of aluminum chloride into the stirred reaction vessel, and after the aluminum chloride is completely dissolved, add sul...

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Abstract

The invention discloses a high-transparency easy-to-open barrier film which comprises a first PE film layer, a first bonding layer, a PEN film layer, a second bonding layer, a barrier layer, a third bonding layer, a PEI film layer, a fourth bonding layer and a second PE film layer. The first PE film layer is prepared from low-density polyethylene, metallocene linear low-density polyethylene, high-density polyethylene and a silicon-aluminum film opening agent in a mass ratio of (10-15): 5: 3: (1-3). The second PE film layer is composed of low-density polyethylene, medium-density polyethylene and a silicon-aluminum film anti-blocking agent in a mass ratio of 17: (1-3): (1-3). The silicon-aluminum film opening agents with different proportions are added into the first PE film layer and the second PE film layer, adhesion between the surfaces is avoided, and therefore the film has good transparency and easy opening performance, the middle layer is a blocking layer, a good blocking effect isachieved, and the use requirements of a packaging film are met in all aspects.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a highly transparent and easy-to-open barrier film. Background technique [0002] With the advancement of chemical technology, the functional development trend of plastic packaging films is becoming more and more obvious. Among them, high-barrier plastic packaging films are one of the fastest-growing functional films. High-barrier film refers to a packaging film that protects the contents of the package from the infiltration of pollutants and small molecules such as oxygen, water vapor, liquids, and odors, and also prevents the contents of the package from seeping out. The high barrier property of the high barrier film means that under the standard state of 23°C and 65% relative humidity, the permeation rate of oxygen is less than 5ml / m2·day, and the permeation rate of water vapor is less than 2g / m2·d. [0003] In the field of food packaging, especially for cereal food packagin...

Claims

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Application Information

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IPC IPC(8): B32B27/32B32B27/36B32B27/08B32B7/12B32B27/28B32B27/18B32B27/34B32B27/30B65D65/40
CPCB32B27/32B32B27/327B32B27/36B32B27/08B32B7/12B32B27/285B32B27/18B32B27/34B32B27/306B65D65/40B32B2307/412B32B2307/7265B32B2307/21
Inventor 胡颖妮
Owner 广州凌玮科技股份有限公司
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