Fluoroplastic composite elastomer
AssigneeMaztech, Inc.
InventorMichael Allen Zumbrum
Life of this patent
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Abstract
An improved fluoroplastic lined elastomeric tube that can maintain a stable flow rate while pumping aggressive chemicals in a peristaltic pump for an extended period of time and is fabricated in sizes ranging from 0.5 mm to 100 mm in inside diameter. The inner fluoroplastic liner comprises a composite of expanded polytetrafluoroethylene and a fluoroplastic polymer resulting in improved flex life over single component fluoroplastics. The inventive liner is bonded to either an unreinforced elastomer or a fiber reinforced elastomer for use in both low and high pressure peristaltic pump applications.
Claims13
A peristaltic pump and a flex endurant tube wherein the peristaltic pump compresses the flex endurant tube to effectuate pumping, the flex endurant tube comprising:
- an elastomeric covering and a fluoroplastic liner adhesively bonded to the elastomeric covering, the fluoroplastic liner comprising a plurality of alternating expanded PTFE film layers and other fluoroplastic film layers;
- wherein the liner is rendered monolithic by heating the alternating layers to adhere the layers together;
- and
- wherein the flex endurant tube is capable of withstanding from 6 to 65 million peristaltic pump compressions.
A peristaltic pump and an elastically and repeatedly collapsible tube wherein the peristaltic pump compresses the tube, the tube comprising:
- an elastomeric covering and a fluoroplastic liner adhesively bonded to the elastomeric covering, the fluoroplastic liner comprising a plurality of alternating expanded PTFE film layers and other fluoroplastic film layers;
- wherein the liner is rendered monolithic by heating the alternating layers to adhere the layers together;
- and
- wherein the expanded PTFE and associated other fluoroplastic film layer has a density of 2.185 g/ml.
Dependencies are inferred from the claim text.