Process of making a pneumatic tire
Abstract
Abstract A PROCESS OF MAKING A PNEUMATIC TIRE WHICH INCLUDES THE STEPS OF PREPARING A PNEUMATIC TIRE TREAD OF CONVENTIONAL TREAD STOCK WHICH TREAD HAS AN OUTER SURFACE FOR ENGAGING THE ROAD IN A FINISHED TIRE AND WHICH HAS AN INNER SURFACE TO WHICH IS ADHERED A BREAKER OF RAYON, NYLON OR POLYESTER FABRIC OR CORD. THE FABRIC OR CORD IS BUFFED TO BREAK OPEN THE FIBERS. THE SO PREPARED TREAD IS THEN PLACED INTO A MOLD WHICH IS FORMED TO THE SHAPE OF A PNEUMATIC TIRE AND A HARDENABLE LIQUID POLYMERIC MATERIAL IS INTRODUCED INTO THE MOLD WHICH MOLD FORMS THE SIDE-WALLS AND CROWN PORTION OF THE PNEUMATIC TIRE. THE PREFERRED RESINOUS POLYMERIC MATERIAL IS POLYURETHANE AND IS INTRODUCED INTO THE MOLD BY WHAT IS COMMONLY REFERRED TO AS CENTRIFUGAL CASTING AND THE POLYMERIC MATERIAL THEN SURROUNDS THE BROKEN FIBERS OF THE FABRIC OR CORD. THE RESINOUS POLYMERIC MATERIAL IS THE CURED TO PRODUCE BOTH A CHEMICAL AND MECHANICAL BOND WITH THE FABRIC OR CORD.
Inventors
- 👤 H Beneze
Bibliographic Details
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