System and method for preforming an extruded parison
AssigneeSolvay (Societe Anonyme)
InventorsJules-Joseph Van Schaftingen, Serge Dupont
Life of this patent
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Abstract
The invention relates to a system for preforming an extruded plastics parison including a nonplanar conveyor belt. It also relates to a method for preforming an extruded parison, including a step during which the parison is deposited on a conveyor belt. The conveyor belt is not planar. This step may be accompanied by a step in which the parison undergoes transverse deformation. The invention also relates to a method of manufacturing at least one article, including such a preforming step.
Claims8
A system for preforming an extruded plastics parison, comprising a conveyor belt which has a nonplanar surface and at least one transverse parison preforming tool;
- said tool being characterized in that it is nonplanar and conforms at least partly to the longitudinal profile of the conveyor belt.
A system for preforming an extruded plastics parison comprising a conveyor belt, which has a nonplanar surface and at least one transverse parison preforming tool, the transverse preforming tool comprising a clamp for transferring the parison to a molding tool and positioning it in the molding tool.
A method of preforming an extruded plastics parison, comprising a step of depositing the parison on a conveyor belt, which has a nonplanar surface, and
- a step of transverse preforming of the parison by means of at least one tool which is nonplanar and conforms at least partly to a longitudinal profile of the conveyor belt.
A method of manufacturing an article, comprising
- (a) first extruding a plastics parison;
- and then
- (b) a step for moulding the parison, comprising
- (i) depositing the parison on a conveyor belt which has a nonplanar surface;
- (ii) transferring the parison to the moulding tool;
- and
- (iii) positioning the parison therein by the aid of a transverse preforming tool.
A method of manufacturing an article, comprising
- (a) extruding a plastics parison;
- and then
- (b) a step for moulding the parison, comprising;
- depositing the parison on a conveyor belt, which has a nonplanar surface;
- wherein the article is a filling sleeve for a fuel tank.
Dependencies are inferred from the claim text.