Tyre manufacture

Details Tyre manufacture Tyre manufacture

B - Operations, Transporting

29

D

18/185

B29D 30/52 (2006.01)

Patent

CA 1041720

ABSTRACT OF THE DISCLOSURE In moulding the tread portion of a pneumatic tyre to have a breaker structure incorporated therein the breaker is built in an annular mould cavity to have a radially outermost 90° ply consisting of parallel cords extending axially of the cavity, and uncured rubber is introduced into the cavity through an annular gate surrounding the cavity so as to spread axially of the cavity. As the introduced uncured rubber does not move circumferentially of the cavity it has no tendency to displace the breaker cords.

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