Method of forming puncture preventing layer for tire and apparatus employed therefor
AssigneeSumitomo Rubber Industries, Ltd.
InventorsKozi Soeda, Katuyuki Hoshikawa, Akitaka Kimura
Life of this patent
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Abstract
A method of forming a puncture preventing layer on an innner surface of a pneumatic tire including the steps of extruding sealing material and pulverizing the extruded sealing material into fine particles for coating the inner surface with a layer of the sealing material under pressure through action of centrifugal force. For effecting the above described method in an efficient manner, there is also provided a puncture preventing layer forming apparatus which includes arrangements for holding the tire, extruding the sealing material, and pulverizing the extruded sealing material so as to be coated onto the inner surface of the tire through the action of centrifugal force.
Claims8
A process for coating the inner surface of a pneumatic tire having a radial inner open side with a puncture sealing material having a high viscosity which comprises extruding a stream of said sealing material while at said high viscosity against a flat face of a first disk disposed facing a second disk spaced upstream therefrom, rotating said first disk relative to the second disk while the space between spaced peripheral edges of the disks is disposed opposite said open side of the tire until said stream of high viscosity material is cast by the flat face as a spray through the open side of the tire and is spread over said inner surface of the tire to form a puncture sealing coating.
A process for coating the inner surface of a pneumatic tire having a radial inner open side with a viscous puncture sealing material which comprises extruding a stream of said viscous sealing material, directing the extruded stream through an opening disposed in a first disk and against a facing flat surface of a second disk, simultaneously rotating the tire and at least one of said first and second disks relative to the other while the space between spaced peripheral edges of the disks is disposed opposite said open side of the tire to pulverize said stream of viscous material and cast the resulting particulate mass through the open side of the tire and spread the particulate mass over said inner surface of the tire to form a puncture sealing coating.
Dependencies are inferred from the claim text.