Patent ID: 6866735
Filing Date: 2005-03-15
Classification: B29C,B29D,B29L,B60C

Abstract:
1. A method of making a tire tube comprising the steps of: forming a peripheral wall having an approximately circular cross-section; forming a partition wall for partitioning an inside of the peripheral wall into an outer peripheral side sealant chamber and an inner peripheral side air chamber; determining an ideal thickness of sealant in the sealant chamber by considering the durability and sealing performance of the tire tube at various thicknesses of the sealant, the durability of the tire tube being a runnable distance of 10,000 km or more and the sealing performance being a maximum diameter of a blocked hole of 6 mm or more; and filling the sealant chamber with an amount of sealant equal to the determined ideal thickness of the sealant, the ideal thickness of the sealant being a thickness that provides a runnable distance of 10,000 km or more and a maximum diameter of a blocked hole of 6 mm or more.