What are the specific reasons for the occurrence of crystal points in the PE protective film?
Jan 09, 2022
In the PE protective film, if there are crystal spots, the specific reasons are:
Reason 1: The raw materials used in the protective film are not up to standard in terms of cleanliness or are polluted by dust.
Reason two: In the selection of raw materials, there is no suitable choice, or the compatibility between several raw materials is not good, resulting in crystal points.
Reason three: In the processing of the protective film, the processing temperature is not well controlled, which makes the raw materials poorly plasticized, or excessively plasticizes, resulting in crystal points.
Reason 4: There is a problem with the processing equipment, the quality of the equipment itself, or the processing capacity of the equipment is insufficient, etc.
