US 12,257,799 B2
Insert for a mould for vulcanising tyres for vehicle wheels, process for producing said insert and process for vulcanising tyres
Angelo Mazzucato, Milan (IT); and Alfredo Balini, Milan (IT)
Assigned to PIRELLI TYRE S.p.A., Milan (IT)
Filed by Pirelli Tyre S.p.A., Milan (IT)
Filed on Apr. 8, 2024, as Appl. No. 18/629,554.
Application 18/629,554 is a continuation of application No. 17/596,222, granted, now 12,005,662, previously published as PCT/IB2020/055072, filed on May 28, 2020.
Claims priority of application No. 102019000008856 (IT), filed on Jun. 13, 2019.
Prior Publication US 2024/0293986 A1, Sep. 5, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. B29D 30/72 (2006.01); B29D 30/06 (2006.01); B60C 13/00 (2006.01)
CPC B29D 30/72 (2013.01) [B29D 30/0606 (2013.01); B60C 13/001 (2013.01); B29D 2030/0612 (2013.01); B29D 2030/0616 (2013.01); B29D 2030/726 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A process for producing an insert for a mould for vulcanising tyres for vehicle wheels, comprising:
providing a main body of the insert,
removing material from the main body by a laser to form a base surface thereon with respect to which a plurality of projections is raised, wherein each of the plurality of projections comprises a lateral surface extending away from the base surface towards a peak of the projection that is remote from the base surface, and wherein the lateral surface defines a tapered profile of the projection away from the base surface, and is inclined at an angle ranging from 10° to 25° with respect to a direction perpendicular to the base surface, and
treating the plurality of projections to obtain a roughness of the lateral surface ranging from 4 μm to 11 μm.