High-density biaxially-stretched polyethylene plastic thin film and production method thereof

Abstract

The invention discloses a high-density biaxially-stretched polyethylene plastic thin film and a production method thereof. The high-density biaxially-stretched polyethylene plastic thin film comprisesa polyethylene plastic thin film body and a second metallocene linear polyethylene layer; a first metallocene linear polyethylene layer is arranged at the upper part of the polyethylene plastic thinfilm body, the inner side of the first metallocene linear polyethylene layer is connected with an ethylene-vinyl alcohol copolymer resin layer, the other sides of the first metallocene linear polyethylene layer and the ethylene-vinyl alcohol copolymer resin layer are connected with one side of a vinyl resin layer, and the other side of the vinyl resin layer is connected with the second metallocenelinear polyethylene layer. The high-density biaxially-stretched polyethylene plastic thin film is obtained by test data through improvement on a polyethylene plastic thin film making process in the making process; through biaxial stretching of the polyethylene plastic thin film, the surface tension of the polyethylene plastic thin film is obviously increased, so that the use performance of the polyethylene plastic thin film is greatly improved.

Description

technical field [0001] The invention relates to the technical field of polyethylene plastic film, in particular to a high-density biaxially stretched polyethylene plastic film and a production method thereof. Background technique [0002] In people's life and industrial production, polyethylene film is widely used in the moisture-proof packaging of food, medicine, daily necessities and metal products and the packaging of frozen food. At present, the production of polyethylene film is mainly produced by blow molding or casting process. , but the tensile properties of the polyethylene film produced by these two processes are poor, and it is easy to cause the tearing of the polyethylene film during use. Therefore, it is necessary to increase the thickness of the film to meet the application requirements. Ethylene film came into being. It is mainly made of linear polyethylene stretched longitudinally and then stretched transversely. Compared with polyethylene film produced by bl...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a high-density biaxially stretched polyethylene plastic film and its production method, to solve the polyethylene plastic film currently on the market proposed by the above-mentioned background technology, after biaxially stretched, its density is relatively low , the moisture-proof barrier performance of the packaged objects is poor, which is not conducive to the protection of objects in polyethylene plastic film packaging, and the problem of polyethylene plastic film pulling and tearing is prone to occur

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