Barrier with Low Extractables and Resealing Properties
A barrier with excellent sealability, resealability, and low extractables, used as a septum.
1 . An apparatus comprising a fluid containment vessel defining an interior volume, said fluid containment vessel having an access port for accessing said interior volume, and a cap over said access port and sealing said access port, said cap comprising a puncturable barrier comprising fluorothermoplastic elastomer.
2 . An apparatus as defined in claim 1 wherein said fluorothermoplastic elastomer comprises a perfluorothernoplastic elastomer.
3 . An apparatus as defined in claim 1 wherein said fluorothermoplastic elastomer comprises a copolymer of tetrafluoroethylene and perfluoro(alkyl vinyl ether); wherein the copolymer contains between about 40 and 80 weight percent perfluoro(alkyl vinyl ether) and complementally 60 and 20 weight percent tetrafluoroethylene.
4 . An apparatus as defined in claim 3 wherein said perfluoro(alkyl vinyl ether) is perfluoro(methyl vinyl ether).
5 . An apparatus as defined in claim 1 wherein said barrier is a composite comprising a layer of said fluorothermoplastic elastomer and further comprising a layer of polytetrafluoroethylene.
6 . An apparatus as defined in claim 5 wherein said polytetrafluoroethylene is expanded polytetrafluoroethylene.
7 . An apparatus as defined in claim 1 wherein said barrier is resealable.
8 . An apparatus as defined in claim 1 wherein said barrier is clean.
9 . An apparatus as defined in claim 1 wherein said barrier is heat-sealable.
10 . An apparatus as defined in claim 1 wherein said barrier is recyclable.
11 . An apparatus as defined in claim 1 wherein said fluid containment vessel is a chromatography sample vial.
12 . An apparatus as defined in claim 1 wherein said fluid containment vessel is a reaction chemistry vial.
13 . An apparatus as defined in claim 1 wherein said fluid containment vessel is a biological sample vial.
14 . An apparatus as defined in claim 1 wherein said fluid containment vessel is an ultra-pure chemical storage vial or tube.
15 . An apparatus as defined in claim 1 wherein said fluid containment vessel is a medicine vial.
16 . An apparatus comprising a fluid containment vessel defining an interior volume, said fluid containment vessel having an access port for accessing said interior volume, and a cap over said access port and sealing said access port, said cap comprising a puncturable barrier comprising a copolymer of tetrafluoroethylene and perfluoro(alkyl vinyl ether); wherein the copolymer contains between about 40 and 80 weight percent perfluoro(alkyl vinyl ether), and complementally 60 and 20 weight percent tetrafluoroethylene.
17 . An apparatus comprising a fluid processing vessel defining an interior volume, said fluid processing vessel having an access port for accessing said interior volume, and a cap over said access port and sealing said access port, said cap comprising a puncturable barrier comprising a copolymer of tetrafluoroethylene and perfluoro(alkyl vinyl ether); wherein the copolymer contains between about 40 and 80 weight percent perfluoro(alkyl vinyl ether), and complementally 60 and 20 weight percent tetrafluoroethylene
18 . A cap for a fluid containment vessel, said cap comprising a body intermateable with said fluid containment vessel, said body defining an aperture, and a puncturable, resealable barrier adjacent to said aperture, said barrier comprising a fluorothermoplastic elastomer.
19 . A method of sealing a fluid containment vessel having an access port comprising the step of covering said access port with a barrier comprising a fluorothermoplastic elastomer.
20 . A method of making a fluid containment vessel comprising forming the vessel of a fluorothermoplastic elastomer.