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1. (WO2013156982) METHOD AND SYSTEM FOR PRODUCING A TYRE TREAD WITH LUGS

Pub. No.:    WO/2013/156982    International Application No.:    PCT/IB2013/053118
Publication Date: Fri Oct 25 01:59:59 CEST 2013 International Filing Date: Sat Apr 20 01:59:59 CEST 2013
IPC: B29D 30/52
B29D 30/58
B29D 30/66
Applicants: BRIDGESTONE CORPORATION
MATTOCCI, Roberto
Inventors: MATTOCCI, Roberto
Title: METHOD AND SYSTEM FOR PRODUCING A TYRE TREAD WITH LUGS
Abstract:
A method of producing a tyre tread (4) with lugs ( 6 ); the tread having a tread base (5), and a number of lugs (6) projecting upwards from the tread base (5); and the method including the steps of: preparing a green-rubber blank tread (13) thinner at the sides and thicker at the centre to define a raised centre portion (21); applying green-rubber blocks (15) to the areas of the blank tread (13) where the lugs (6) are to be formed, which blocks rest centrally against the raised centre portion (21); and curing the blank tread (13), together with the blocks (15), in a curing mold (17) negatively reproducing the pattern of the tread (4).