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US 6,866,812 B2Granted
Process for manufacturing hollow plastic bodies
AssigneeSolvay (Societe Anonyme)
InventorsJules-Joseph Van Schaftingen, Yannick Gerard, Stéphane Leonard, Serge Dupont, Joël Op De Beeck
Life of this patent
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Abstract
Process for manufacturing hollow plastic bodies, especially motor-vehicle fuel tanks, from an extruded parison of closed cross section, in which at least one cut is made in the parison which is then formed by molding.
Claims45
A process of manufacturing a hollow body for receiving a liquid, comprising the steps of:
- extruding a parison;
- cutting through said parison so as to form two portions separated by a cut;
- and
- molding said two portions so as to form said hollow body for receiving said liquids,
- wherein said step of cutting said parison comprises making at least two cuts in said parison so as to form two separate sheets.
2 more elements
A process of manufacturing a hollow body, comprising the steps of:
- extruding a multilayered parison comprising stacked layers fastened to each other;
- cutting through said multilayered parison so as to form two portions separated by a cut;
- and
- molding said two portions so as to form said hollow body,
- wherein said step of cutting said multilayered parison comprises making at least two cuts in said multilayered parison so as to form two separate sheets.
2 more elements
A process of manufacturing a fuel tank, comprising the steps of:
- extruding a parison;
- cutting through said parison so as to form two portions separated by a cut;
- and
- molding said two portions so as to form said fuel tank,
- wherein said step of cutting said parison comprises making at least two cuts in said parison so as to form two separate sheets.
2 more elements
Dependencies are inferred from the claim text.