Multilayer flexible tube and methods for making same
AssigneeSaint-Gobain Performance Plastics Corporation
InventorsWayne Edward Garver, James Ludlow, Gerald H. Ling, Charles S. Golub, Kathryn J. Morris, Mark F. Colton
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Abstract
A multilayer flexible tube includes an inner layer including a melt processable fluoropolymer, wherein the fluoropolymer includes a copolymer of a poly vinylidene fluoride (PVDF) and a hexafluoropropylene (HFP); and an outer layer including a melt processable polymer having a shore hardness less than a shore hardness of the inner layer, wherein the multilayer flexible tube has a maximum storage modulus of at least 300 MegaPascal (MPa) at a temperature of about −10° C.
Claims17
A multilayer flexible tube comprising:
- an inner layer comprising a melt processable fluoropolymer, wherein the fluoropolymer comprises a copolymer consisting essentially of a poly vinylidene fluoride (PVDF) and a hexafluoropropylene (HFP);
- and
- an outer layer directly in contact with the inner layer, the outer layer comprising a melt processable polymer having a shore hardness less than a shore hardness of the inner layer, wherein the multilayer flexible tube has a maximum storage modulus of at least 300 MegaPascal (MPa) at a temperature of about −10° C.
A multilayer flexible tube comprising:
- an inner layer comprising a melt processable fluoropolymer, wherein the fluoropolymer comprises a copolymer of a poly vinylidene fluoride (PVDF) and a hexafluoropropylene (HFP);
- an outer layer comprising a melt processable polymer having a shore hardness less than a shore hardness of the inner layer;
- and
- a tie layer disposed between the inner layer and the outer layer, wherein the tie layer comprises a blend of a thermoplastic urethane with a fluoropolymer copolymer of hexafluoropropylene and poly vinylidene fluoride, wherein the multilayer flexible tube has a maximum storage modulus of at least 300 MegaPascal (MPa) at a temperature of about −10° C.
Dependencies are inferred from the claim text.