Patent ID: 8985992
Filing Date: 2015-03-24
Classification: B29C

Abstract:
1. An extrusion die head adapted to attach to a front end part of an extruder, comprising: a shell having an outlet for extruding a resin material which has been melt-kneaded by means of the extruder; a plate-like shell tip having an opening to be arranged along a circumference of the outlet in such a manner that the opening surrounds the outlet, the shell tip being detachably attached to the shell; a tapered part provided in an opening side of the shell tip and having a diameter increasing along an extrusion direction of the resin; and a non-sticky coating applied at least along an inner circumference of the opening formed in the shell tip, wherein an angle of inclination of the tapered part relative to a surface of the shell tip on which the shell tip is attached to the shell is equal to or smaller than 20°.