PRODUCING DEVICE OF HIGH MOLECULAR RESIN FILM

摘要

PURPOSE: A producing method of a film is provided to produce a film of a high quality continuously and stably by controlling the thickness of a film formed on a casting roll. CONSTITUTION: A producing method of a film contains the steps of: rotating as controlling to maintain 25 deg.C of a surface temperature by supplying cooling water on a casting roll(20), supplying melted sheet from a supply die(21) of the melted sheet to the casting roll(20) rotated to be contacted to the casting roll and cooling and solidifying, densely attaching the sheet solidified on the casting roll by the film(24) formed on the casting roll(20), moving the sheet by the rotation of the casting roll, transporting the sheet exfoliated from the casting roll to a film drawing device by a striper roll(25), and drawing the sheet from the film drawing device vertically and horizontally at the same time to obtain a drawn film by a different axis.