Plastic and nonmetallic article shaping or treating: processes – With step of making mold or mold shaping – per se
Patent
1998-12-18
2000-11-07
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
With step of making mold or mold shaping, per se
249142, 264319, 264326, 425 46, 425195, B29C 3500, B29C 3936
Patent
active
061432237
ABSTRACT:
A process of molding of a rubber tread making it possible, after molding grooves, to strip the mold without rupture of connecting elements molded in the grooves. A molding element for molding a groove pattern in a rubber tread, the groove defined by at least two main opposite walls joined by at least one molded rubber connecting element, the molding element being designed to project from a molding surface of the mold and presenting at least one opening for molding a connecting element during molding of the tread. The molding element is constituted by the assembly of a first part forming a support, intended to be fastened to a piece of a mold by appropriate means, and of a second part constituted by at least one piece forming a key. Each key is disengaged from the support in order to strip the molding element from the mold.
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Compagnie Generale des Etablissements Michelin - Michelin & Cie
Vargot Mathieu D.
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