Patent ID: 6193492
Filing Date: 2001-02-27
Classification: B29C,B29D,Y10S

Abstract:
A mold for molding a tread band of a tire, the tread band being made of elastomeric compound, the mold including a molding element anchored in a face of the mold and projecting from said face into said compound for molding a non-demoldable pattern and comprising a groove molding part projecting from the mold face into said compound and at least one undercut molding part laterally extending from the groove molding part in the molding position and which undercut molding part is embedded in the compound in the molding position for molding an undercut in the pattern, said molding element having a demolding direction to withdraw it from the molding position embedded within the molded compound during a demolding operation, said at least one undercut molding part of the molding element moving from the molding position to a demolding position, such that when moved from the molding position for molding an undercut during at least part of the demolding operation the projected area of each part molding a pattern with an undercut onto a plane perpendicular to the the molding direction is smaller than the area of the same part projected onto the same plane in the molding position, so as to make demolding of said molding element easier.