Patent ID: 9027616
Filing Date: 2015-05-12
Classification: B32B,B60C

Abstract:
1. A tire tube comprising: a tube main body having a multilayer structure including at least one rubber layer and at least one thermoplastic resin layer laminated together, the at least one thermoplastic resin layer being made of any one of a thermoplastic resin and a thermoplastic elastomer composition obtained by blending an elastomer in a thermoplastic resin; and an air injection valve attached to a valve seat adhered to an external surface of the tube main body with a metal valve seat fitting in between, the valve seat being made of any one of a thermoplastic resin and a thermoplastic elastomer composition obtained by blending an elastomer in a thermoplastic resin; wherein one said rubber layer is placed as an outermost layer of the multilayer structure in at least a region where the tube main body is configured to be in contact with an inner circumferential surface of a tread part of a tire when the tube is set in the tire; wherein one said thermoplastic resin layer is placed inside the outermost layer; and wherein a protective cover made of any one of a thermoplastic resin and a thermoplastic elastomer composition obtained by blending an elastomer in a thermoplastic resin is adhered to a joint section between the tube main body and the valve seat to cover the joint section in a way that the protective cover stretches over surfaces respectively of the tube main body and the valve seat.