Method of manufacture and retreading of tires

A method of securing a tire tread to a tire carcass comprising the steps of

• (A) at least partially pre-curing a tread strip in a suitable apparatus;
• (B) cooling and preshrinking said tread strip after its partial precure;
• (C) applying a strip of cushion gum material to the periphery of an adjacently disposed tire carcass;
• (D) reheating said tread strip to a temperature at least sufficient to vulcanize said cushion gum material;
• (E) applying said tread strip to the periphery of said tire carcass in overlying relationship to said cushion gum material and in said heated condition to supply at least a portion of the heat required to vulcanize said cushion gum material to said carcass and said tread strip with no heat being supplied during bonding from external sources to the assembled tire.

A method of securing tire tread material which is at least partially precured to a tire carcass comprising the steps of

• (A) applying a strip of cushion gum material to the periphery of the tire carcass;
• (B) applying the tread material to the periphery of said tire carcass over said cushion gum material;
• (C) applying bonding heat at the interface of said cushion gum material, said tread strip and said carcass at least sufficient to vulcanize said cushion gum material to the contracting surfaces between said tread material, said tire carcass and said cushion gum material;
• (D) heating said tread material prior to application to the carcass with said bonding heat that is applied at the interface of said tread material, said tire carcass and said cushion gum material being the residual heat from said tread material.