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A kind of preparation method of PE composite film with good heat resistance and barrier property

A technology of barrier property and composite film, applied in the field of preparation of PE composite film, can solve the problems of unsuitability and unstable quality of the finished film, and achieve the effect of improving uniformity, tight bonding and force uniformity.

Active Publication Date: 2021-05-04
厦门富锦新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This prior art uses an Al layer. As mentioned earlier, the properties of Al itself are not suitable as a packaging material. At the same time, due to process problems, the quality of the finished film is not stable.

Method used

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  • A kind of preparation method of PE composite film with good heat resistance and barrier property
  • A kind of preparation method of PE composite film with good heat resistance and barrier property
  • A kind of preparation method of PE composite film with good heat resistance and barrier property

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preparation example Construction

[0033] figure 1 It is a flowchart of a method for preparing a PE composite film with good heat resistance and barrier properties according to an embodiment of the present invention. The preparation method of the PE composite film with good heat resistance and barrier property comprises the following steps:

[0034] Step 101: providing HDPE, mLLDPE, linear polyethylene, PET pellets and EVA raw materials;

[0035]Step 102: Dry the HDPE, mLLDPE, linear polyethylene, PET pellets and EVA raw materials at a drying temperature of 90-100° C. and a drying time of 20-40 hours;

[0036] Step 103: configuring the raw materials of the first PE layer, wherein the raw materials of the first PE layer include HDPE, linear polyethylene and processing aids;

[0037] Step 104: configuring the raw materials of the second PE layer, wherein the raw materials of the second PE layer include HDPE, mLLDPE and processing aids;

[0038] Step 105: configuring the raw materials of the third PE layer, whe...

Embodiment 1

[0045] The PE composite film with good heat resistance and barrier property includes from the inside to the outside: the first PET film, the first PE layer, the second PE layer, the third PE layer, the barrier metal film layer and the first EVA layer, wherein, The preparation method of the PE composite film with good heat resistance and barrier property comprises the following steps: providing HDPE, mLLDPE, linear polyethylene, PET pellets and EVA raw materials; HDPE, mLLDPE, linear polyethylene, PET pellets and EVA raw materials Drying, the drying temperature is 90°C, and the drying time is 20h; configure the raw materials of the first PE layer, wherein the raw materials of the first PE layer include HDPE, linear polyethylene and processing aids; configure the raw materials of the second PE layer, wherein the first PE layer The raw materials of the second PE layer include HDPE, mLLDPE and processing aids; the raw materials of the third PE layer are configured, wherein the raw ...

Embodiment 2

[0047] The PE composite film with good heat resistance and barrier property includes from the inside to the outside: the first PET film, the first PE layer, the second PE layer, the third PE layer, the barrier metal film layer and the first EVA layer, wherein, The preparation method of the PE composite film with good heat resistance and barrier property comprises the following steps: providing HDPE, mLLDPE, linear polyethylene, PET pellets and EVA raw materials; HDPE, mLLDPE, linear polyethylene, PET pellets and EVA raw materials Drying, the drying temperature is 100°C, and the drying time is 40h; configure the raw materials for the first PE layer, wherein the raw materials for the first PE layer include HDPE, linear polyethylene and processing aids; configure the raw materials for the second PE layer, where the first PE layer The raw materials of the second PE layer include HDPE, mLLDPE and processing aids; the raw materials of the third PE layer are configured, wherein the ra...

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Abstract

The invention discloses a method for preparing a PE composite film with good heat resistance and barrier properties. The PE composite film with good heat resistance and barrier properties comprises from inside to outside in sequence: a first PET film, a first PE layer, a second The second PE layer, the third PE layer, the barrier metal film layer and the first EVA layer, the preparation method of the PE composite film with good heat resistance and barrier property comprises the following steps: providing HDPE, mLLDPE, linear polyethylene, PET pellets and EVA raw materials; drying HDPE, mLLDPE, linear polyethylene, PET pellets and EVA raw materials; configuring raw materials for the first PE layer; configuring raw materials for the second PE layer; configuring raw materials for the third PE layer; forming by co-extrusion A composite film layer comprising the first PET film, the first PE layer, the second PE layer and the third PE layer; heat-treating the composite film layer to obtain a surface-activated composite film layer; using The Cu layer is deposited by magnetron sputtering; the PE composite film is prepared, and the PE composite film is annealed.

Description

technical field [0001] The invention relates to the technical field of PE composite films, in particular to a method for preparing a PE composite film with good heat resistance and barrier properties. Background technique [0002] Polyethylene (PE for short) is a thermoplastic resin obtained by polymerization of ethylene. In industry, it also includes copolymers of ethylene and a small amount of α-olefins. Polyethylene is odorless, non-toxic, feels like wax, has excellent low temperature resistance (the lowest operating temperature can reach -100 ~ -70 ° C), good chemical stability, and can withstand most acid and alkali erosion (not resistant to oxidation properties) acid). Insoluble in common solvents at room temperature, low water absorption, excellent electrical insulation. [0003] Prior art CN107283980B discloses a high temperature resistant cooking polyethylene film and its production process. The polyethylene film comprises a corona layer, an intermediate layer a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/085B32B27/06B32B27/32
Inventor 黄作团
Owner 厦门富锦新材料有限公司
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