Patent ID: 6321794
Filing Date: 2001-11-27
Classification: F16L,Y10S

Abstract:
A corrugated or convoluted laminated tube having a wall corrugated or convoluted along at least a portion thereof, said wall comprising at least an outer resin layer and an inner resin layer bonded thereto, said inner resin layer being formed from a THV (tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride) terpolymer satisfying at least one of the following two conditions:(1) it has a monomer composition consisting of 30 to 80% by weight of tetrafluoroethylene, 10 to 30% by weight of hexafluoropropylene and 10 to 50% by weight of vinylidene fluoride; and(2) it has a flexural modulus of at least 40 MPa.