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shrink film is packaged by heating the film inward
Cuide packaging products factory
in the film blowing process, PE heat shrinkable film is a finished film made by using the substrate with sensitive heat shrinkability (with expansion memory function) and special production process. (during the inflation process, the film bubble presents the segmented variation of the first film tube and the second film tube)
the finished film will automatically return to the state of the first film tube after being baked at high temperature. PE shrinkable film makes use of this function to realize the effect of shrinkable packaging.
Baidu’s PP forum has many friends who make PE heat shrinkable films