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December 15, 2023

Analysis and solution of common problems in blowing film (14(injection molding products)

14, thin film fish eye

Reason: Fish eyes are mainly additives in raw materials, low molecular weight resin and dust, etc., condensed on the mouth mold during processing, accumulate a certain amount after being taken away by the film, thus forming fish eyes on the film.

solution

① After a certain time, increase the screw speed, increase the melt extrusion pressure, and take away the precipitates.

② Clean the mouth mold regularly.

③ Appropriately increase the melt temperature and fully plasticize.
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