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POF shrink film is a substitute for traditional shrink film, mainly used for packaging regular and irregular shape products, high transparency, good luster, can clearly show the appearance of products, improve sensory awareness, reflect the grade, is widely popular. In order to facilitate your understanding, the next on the production process of its products are introduced.
Shrink film is made of linear low density polyethylene and copolymerized polypropylene (TPP, PPC) as the main raw materials, adding necessary additives, through co-extrusion and blow molding process. Mainly using double membrane bubble process, also known as the Prandi process in the world, it is the raw materials through different extruder melt extrusion, through the special design of co-extrusion die head, the formation of initial film after quenching, and then through heating secondary blowing and stretching process to produce products.
The above is about the POF shrink film production process introduction, according to its introduction, can better ensure the use of products, so that its energy saving, high shrinkage rate, transparent luster, strong tear resistance and other characteristics of the full play, and this product subverted the limitations of the traditional packaging film, welcomed by the market.
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