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US 2022/0170575 A1Published application
Tube and method for making same
AssigneeSaint-Gobain Performance Plastics Corporation
InventorsJohn J. HEINDEL, Katie CAMPBELL, Rachel Z. PYTEL
Life of this patent
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Abstract
A tube includes a layer including a fluoropolymer having a refractive index of less than 1.42, wherein the fluoropolymer includes a copolymer including vinylidene fluoride and polymethyl methacrylate, a crosslinked terpolymer including tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride, or combination thereof.
Claims20
A tube comprising:
- a layer comprising a fluoropolymer having a refractive index of less than 1.42, wherein the fluoropolymer comprises a copolymer comprising vinylidene fluoride and polymethyl methacrylate, a crosslinked terpolymer comprising tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride, or combination thereof.
A method of forming a tube comprising:
- providing a fluoropolymer having refractive index of less than 1.42, wherein the fluoropolymer comprises a copolymer comprising vinylidene fluoride and polymethyl methacrylate, a terpolymer comprising tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride, or combination thereof;
- extruding the fluoropolymer at a temperature of greater than 550° F.;
- quenching the extruded fluoropolymer at a temperature of less than 80° F.;
- and
- optionally applying radiation to the fluoropolymer.
2 more elements
A multilayer tube comprising:
- an inner layer comprising a first material;
- a mid layer comprising a second material, the second material comprising a copolymer comprising vinylidene fluoride and polymethyl methacrylate, a crosslinked terpolymer comprising tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride, or combination thereof;
- and
- an outer layer comprising a third material, wherein the first material and the third material have the same refractive index.
1 more element
Dependencies are inferred from the claim text.