A screening device for masterbatch used in the production of protective heat shrink film.

Abstract

This utility model belongs to the technical field of supporting equipment for shrink film production, and specifically relates to a screening device for masterbatch in the production of protective heat shrink film. It includes a strip-shaped box body installed at an angle along its length on a support frame. A first perforated plate is fixedly installed in the strip-shaped box body, dividing it into an upper screening chamber and a lower receiving chamber. A vibration motor is installed on the lower surface of the strip-shaped box body. The areas on the upper surface of the first perforated plate near the inner walls of the screening chamber on both sides are blank areas without holes. Limiting ribs are fixed in these blank areas, with their two right-angled surfaces respectively adhering to the corresponding inner walls of the blank areas and the screening chamber. A horizontal second perforated plate extends from the bottom end of the first perforated plate along its length. The diameter of the second perforated plate is larger than that of the first perforated plate, allowing material sliding down the first perforated plate to reach the second perforated plate.

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