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Countertop protective film manufacturing process
- Jan 21, 2019 -

The countertop protective film is used for surface packaging of products, such as white, transparent, blue, green, and the like. So do you know how the countertop protective film is made? In fact, the protective film from production to material processing is a very cumbersome process that needs to be produced through a variety of different process technologies.


One of the processing steps of the countertop protective film is the blown film process. The so-called blown film process is to melt plasticize the plastic in the extruder, extrude it into a film tube through an annular die, and inflate it by compressed air to cool the shape. The resulting film. It can also be processed by a casting process. Usually, the cast film is a film obtained by multi-layer co-extrusion, extruding a molten resin through a T film head, and then cooling it by a chill roll.


There are also some countertop protective films made by a biaxial stretching process, which refers to a film obtained by stretching and extruding a melt-extruded plastic in two directions, which changes the polymer molecules. And the arrangement of the segments has a high degree of planar orientation and an increase in crystallinity, so that the mechanical strength and surface finish of the film are significantly improved.