Tire liner and method of preparation

Details Tire liner and method of preparation Tire liner and method of preparation

B - Operations, Transporting

60

C

154/62, 152/80.1

B60C 19/12 (2006.01)

Patent

CA 1129327

TIRE LINER AND METHOD OF PREPARATION ABSTRACT OF THE DISCLOSURE An improved annular shaped tire liner which is adapted to fit inside of, around and in contact with a casing of a pneumatic tire (100) and in compression by the casing and a method for preparing the tire liner is described. The liner has a thickness which provides substantial protection against penetration of the tire to the inside 103 of the casing. The tire liner is character- ized by having a section which is an annular strip (10, 25, 50, 60, 70) of high pressure and temperature vulcanized and molded rubber, preferably of the type used for bonding to the outside of a tire casing as a tread. Usually ends of the annular strip are joined by a thin section (16) of low temperature and pressure vulcanized rubber. The low tempera- ture and pressure vulcanized rubber is preferably derived from a vulcanizable rubber used to bond the molded rubber to a tire casing and is sometimes referred to as "cushion rubber". Preferably sheets (11, 19, 51, 52, 60, 73, 74) of flexible low temperature and pressure vulcanized rubber encase the annular strip of high pressure and temperature molded rubber and strips (26, 27, 52, 53, 67, 68, 71, 72) of low temperature and pressure vulcanized rubber are pro- vided along the sides of the first annular strip. The low temperature and pressure vulcanized rubber preferably has been vulcanized in a mold cavity which has the shape and dimensions of the inside of a tire casing and preferably a tire casing is used as the mold cavity.

353472

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