Process for producing linear profiles
AssigneeRobert Bosch GmbH
InventorsReiner Lay, Paul Wynen
Life of this patent
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Abstract
The invention relates to a method for producing extruded profiled elements (3) from an elastomer material. In said method, the extruded profiled element (3) is formed from the elastomer material in a first step, the extruded profiled element (3) is entirely or partly surrounded by a thermoplastic material, the elastomer material that is surrounded by the thermoplastic material is cured, and the thermoplastic material is finally removed again once the elastomer material has been cured.
Claims13
A process for producing linear profiles (3) for a wiper rubber from an elastomer material, the profiles having at least one wiping edge (5), the process comprising the following steps:
- a. molding of the linear profile (3) from the elastomer material,
- b. complete or partial sheathing of the linear profile (3) by a thermoplastic material,
- c. vulcanizing the elastomer material sheathed by the thermoplastic material, and
- d. removing the thermoplastic material after vulcanizing the elastomer material,
- wherein the complete or partial sheathing is sufficient to avoid deformation of the wiping edge (5) until the elastomer material has been completely vulcanized,
- wherein the thermoplastic material has been selected from polyethylene terephthalate, polypropylene, polycarbonate, polyamide, and high-molecular-weight polyethylene having an average molecular weight of from 500,000 g/mol to 1,000,000 g/mol, and
- wherein the thermoplastic material does not enter into any adhesive bonding with the elastomer material.
Dependencies are inferred from the claim text.