Process for producing a piece of bodywork of motor vehicle hired by the injection of a plastic material, the process of sequential injection of the plastic material, so as to execute those processes.And the piece made of plastic material thus obtained

摘要

Invention patent: b "procedure for carrying out a piece of bodywork of motor vehicle hired by the injection of a plastic material, the process of sequential injection of the plastic material.The mold to perform these procedures, and the piece made of plastic material thus obtained " d .The invention relates to a process for carrying out a piece of bodywork (1) of a motor vehicle by injection sequ00b3encial of plastic material in a mold is powered by one or more channels coldThat is to fill a first region of first end (a) of the mold, and then a second region (b) adjacent to the first.And repeat the operation which consists in filling a new region adjacent to the precedent, to reach a final region (c) of the mold, opposite to the first region (a).Obtura each channel cold as the aid of a rod axially movable in a thin drilling which intercepts the channel cold, the longitudinal section of the rod covering the cross section of the channel.