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Two-way linear easy-to-tear polyethylene film and production process thereof

A polyethylene film and production process technology, applied in the field of packaging film materials, can solve the problems of general linear tearability, low tensile strength, poor mechanical properties, etc., and achieve excellent linear tearability, high tensile strength, and production. low cost effect

Active Publication Date: 2019-01-25
HUANGSHAN NOVEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional linear easy-to-tear PE film on the market is mostly modified by cyclic olefin copolymer (COC), which has high haze, low light transmittance, and poor mechanical properties (including low tensile strength and low impact resistance. ), and the linear easy-to-tear performance is average, and it needs to be used together with other modified PET, aluminum foil and other easy-to-tear materials. At the same time, the price of cyclic olefin copolymer is high, resulting in high material cost

Method used

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  • Two-way linear easy-to-tear polyethylene film and production process thereof
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  • Two-way linear easy-to-tear polyethylene film and production process thereof

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Embodiment Construction

[0036] Below in conjunction with embodiment technical solution of the present invention is made more specific description:

[0037] Raw material source:

[0038] Low-density polyethylene: LDPE, produced by Sinopec, brand 4533H, melting finger melting finger 4.0g / 10min, density 0.932g / cm 3 ;

[0039] Low-density polyethylene: LDPE, produced by Exxon, brand 100AC, melt index 2.0g / 10min, density 0.923g / cm 3 ;

[0040] Polybutene: produced by Basel, brand PB0110, melt index 12.0g / 10min, density 0.914g / cm 3 ;

[0041] High-density polyethylene: HDPE, produced by Exxon Company, the brand is HMA025, the melt index is 8.0g / 10min, and the density is 0.964g / cm 3 ;

[0042] Processing aid: produced by Beijing Yalun, the brand is DS-A1058LD;

[0043] Open-ended masterbatch: produced by Beijing Yalun, the brand is AB-20LD;

[0044] Slippery agent: produced by Ann Color, the brand is 10090-k.

[0045] The production process of the two-way linear easy-tear polyethylene film of the p...

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Abstract

The invention relates to a two-way linear easy-to-tear polyethylene film and a production process thereof. The polyethylene film is obtained through the processing by a tape casting process; the polyethylene film comprises a hot sealing layer, a middle layer and a corona layer; the hot sealing layer is prepared from the following ingredients by weight: 80 to 84 percent of low density polyethylene,15 to 18 percent of polybutylene, 0.5 to 1.0 percent of smoothening agent and 0.5 to 1.0 percent of opening master batch; the middle layer is prepared from the following ingredients by weight: 65 to70 percent of low density polyethylene, 20 to 25 percent of high density polyethylene, 0.1 to 0.5 percent of processing auxiliary agent and 8 to 12 percent of polybutylene; the corona layer is prepared from the following ingredients by weight: 99.5 to 99.9 percent of low density polyethylene and 0.1 to 0.5 percent of processing auxiliary agent. The polyethylene film has the advantages that the mist degree is low; the light transmission rate is high; the mechanical performance is good; the linear easy-to-tear performance is excellent; the processing cost is low.

Description

technical field [0001] The invention belongs to the field of packaging film materials, and in particular relates to a bidirectional linear easy-tear polyethylene film and a production process thereof. Background technique [0002] With the improvement of packaging technology, people are no longer satisfied with the necessary functions of food packaging, such as simply protecting food and prolonging the shelf life of food, but put forward higher and higher requirements for the ease of use of food packaging in actual use. Among them, the easy tearability of packaging is one of the practical functions that people pay more attention to. The traditional linear easy-to-tear PE film on the market is mostly modified by cyclic olefin copolymer (COC), which has high haze, low light transmittance, and poor mechanical properties (including low tensile strength and low impact resistance. ), and the linear easy-to-tear performance is average, it needs to be used in combination with other...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/32B29D7/01B29C48/18B29C48/00
CPCB29D7/01B32B27/08B32B27/32
Inventor 胡凯汪学文张和平黄巍董文辉
Owner HUANGSHAN NOVEL
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