Oleophobic laminated article
AssigneeBHA Altair, LLC
InventorsMartin Gregory Hatfield, Nusrat Farzana
Life of this patent
Estimating the term…
Abstract
An article comprising a microporous membrane. A first porous fabric is laminated to a first side of the microporous membrane. A second porous fabric is laminated to a second opposite side of the microporous membrane to form a laminate with the membrane and the first porous fabric. The laminate has two fabric sides separated by the microporous membrane. A treatment material is applied to the laminate to form a treated laminate. The treated laminate has an oil resistance of at least a number 7 determined by AATCC 118 testing on both fabric sides and has an air permeability through the treated laminate of at least 0.01 CFM per square foot determined by ASTM D737 testing.
Claims17
An article comprising:
- a fluoropolymer-treated laminate that comprises
- a microporous membrane;
- a first porous fabric laminated to a first side of the microporous membrane;
- a second porous fabric laminated to a second opposite side of the microporous membrane to form a laminate with the membrane and the first porous fabric, the laminate having two fabric sides separated by the microporous membrane;
- and
- a treatment material comprising a fluoropolymer dissolved in an inorganic solvent, wherein the treatment material is applied to the laminate to form the fluoropolymer-treated laminate, the fluoropolymer-treated laminate having an oil resistance of at least a number 7 determined by AATCC 118 testing on both fabric sides and having an air permeability through the treated laminate of at least 0.01 CFM per square foot determined by ASTM D737 testing.
A vent comprising:
- a fluoropolymer-treated laminate that comprises
- a microporous membrane of expanded polytetrafluoroethylene (ePTFE);
- a first porous fabric laminated to a first side of the microporous membrane;
- a second porous fabric laminated to a second opposite side of the microporous membrane to form a laminate with the membrane and the first porous fabric, the laminate having two fabric sides separated by the microporous membrane;
- and
- a treatment material comprising a fluoropolymer dissolved in an inorganic solvent, wherein the treatment material is applied to the laminate to form the fluoropolymer-treated laminate, the fluoropolymer-treated laminate having an oil resistance of at least a number 7 determined by AATCC 118 testing on both fabric sides and having an air permeability through the treated laminate of at least 0.01 CFM per square foot determined by ASTM D737 testing.
An article comprising:
- a fluoropolymer-treated laminate that comprises
- a microporous membrane of expanded polytetrafluoroethylene (ePTFE);
- a first porous fabric laminated to a first side of the microporous membrane;
- a second porous fabric laminated to a second opposite side of the microporous membrane to form a laminate with the membrane and the first porous fabric, the laminate having two fabric sides separated by the microporous membrane;
- and
- a treatment material comprising a fluoropolymer dissolved in an inorganic solvent, wherein the treatment material is applied to the laminate to form the fluoropolymer-treated laminate, the fluoropolymer-treated laminate having an oil resistance of a number 8 determined by AATCC 118 testing on both fabric sides having an air permeability through the treated laminate of at least 0.05 CFM per square foot determined by ASTM D737 testing and having a Mullen Water Entry pressure determined by challenging the membrane side of at least 10 PSI.
Dependencies are inferred from the claim text.