초록 ▼

A method of reducing rubber projections such as vents and flash formed during molding and vulcanizing of a pneumatic tire by prior treatment of selected outer surfaces of the tire with from one to ten megarads of electron radiation from a 500,000 to 3,000,000 KV source to inhibit the flow of the tre

A method of reducing rubber projections such as vents and flash formed during molding and vulcanizing of a pneumatic tire by prior treatment of selected outer surfaces of the tire with from one to ten megarads of electron radiation from a 500,000 to 3,000,000 KV source to inhibit the flow of the treated rubbery material into the vent holes of the mold and crevices between abutting sections of the mold.

대표청구항 ▼

A method of manufacturing a rubber or rubberized article in which the article is preformed of a material including unvulcanized elastomeric material and subsequently made to conform to A mold having at least two sections with vent holes and vulcanized, the improvement comprising; subjecting selected

A method of manufacturing a rubber or rubberized article in which the article is preformed of a material including unvulcanized elastomeric material and subsequently made to conform to A mold having at least two sections with vent holes and vulcanized, the improvement comprising; subjecting selected portions of the outer surface of the preformed article prior to the vulcanization of the elastomeric material to a dosage of electron radiation between one and ten megarads from a source having an intensity of between 500,000 and 3,000,000 KV which is sufficient to at least inhibit the flow of the elastomeric material into vent holes and parting lines between sections of the mold, but insufficient to prevent complete conformance of the preform to the mold cavity.