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The development prospect of PE stretch film is bright

February 14, 2020

[China Packaging Network News] PE stretch film is developed from a single layer to two layers, three layers, and now mainly PE stretch film produced by the cast method; PE stretch film is widely used in wine, cans, mineral water The whole set of packaging for products such as various types of beverages, cloths, etc. This product has good flexibility, impact resistance, tear resistance, and is not easy to damage, is not afraid of tides, high shrinkage rate and so on.


PE stretched film is a kind of transparent thermoplastic plastic. PE is commonly used in three major categories: LDPE, HDPE, and LLDPE. The monomers of the three polyethylenes are the same, but the process conditions used for the synthesis of these polyethylenes are just the same. Differently, therefore, three different types of polyethylene are produced, and the properties of the three materials are quite different.


The early PE stretch film was blown film. This is because the cast line has the advantages of thickness uniformity, high transparency, and can be applied to the requirements of high magnification prestretch. Because the single layer cast can not be applied to one side, the application The field is limited. Single and double-layered casts do not have a wide range of three-layer casts in terms of data selection, and formula interest is also high. Therefore, it is still ideal to have a three-layer co-extrusion structure.


PE stretch film is a good material for toughness, not easy to use ordinary plastic crusher, because the PE film is soft and tough, it is not easy to shredding, not to mention the high temperature of the tool at high speed, will make LDPE melt on the blade , PE granulation, can be directly into the extruder feeding port, relying on the shear force of the screw to pull the PE film into the barrel heating melt extrusion granulation, PE recovery of a material, can still blow film, for Non-food and pharmaceutical packaging is also widely used in the production of Oxford leather and tarpaulins, with a promising future.

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