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

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...

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

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