Patent ID: 9221205
Filing Date: 2015-12-29
Classification: B22D,B29C,B29L

Abstract:
1. A molding method for molding a part by plastic injection, comprising the following steps: a) making available a mold forming an enclosure corresponding to the shape of said part to be formed, said enclosure including a cavity designed to form a first projecting portion of said part; b) injection of a plastic material into said enclosure of said mold, said mold having a first recess area upstream of where said plastic material is injected into said enclosure for receiving at least some of said plastic material to form a first projection portion in the part; c) modulation of a volume of said cavity in the direction of an increase in said volume during the step b); and d) performing said modulation step by driving a mobile element in communication with said cavity away from said enclosure using a driving device in order to cause said increase in said volume in said cavity as said plastic material is injected into said cavity during said injection step; wherein said cavity is arranged substantially perpendicular of a main direction of flow of said plastic material and downstream of where said plastic is injected into said enclosure; and said cavity receiving said plastic material and causing a second projection portion to be provided in said part, wherein said first projection portion and said second projection portion are substantially the same size.