Causes and countermeasures of orange peel pattern on surface of polyester film
In view of the apparent defect problems occurred in the production and processing of BOPET(biaxially oriented polyethylene terephthalate)polyester film,the influence of raw material opening agent,die head lip opening degree,cold roller temperature in the casting area,film stiffness,film placing time before inspection on the orange peel pattern on the film surface was analyzed.It was pointed out that the orange peel pattern phenomenon on the film surface could be improved by appropriately increasing the particle size of the silicon masterbatch,the temperature of the cold roll,the stiffness of the film,reducing the opening degree of the die head lip,reducing the storage time of the film and so on.
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