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US 12,442,367 B2Granted
Long life pump tubing
AssigneeSaint-Gobain Performance Plastics Corporation
InventorsJames Ludlow, Kathryn J. Morris, Mark F. Colton, Michael J. Tzivanis
Life of this patent
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Abstract
Systems and methods are disclosed that include providing a tubing construction with at least one layer formed from a thermoplastic vulcanizate (TPV). The tubing construction is suitable for use in pump applications subjected to cyclic loading and unloading. The tubing construction maintains a flowrate stability of +/−10% for an extended period of time to provide consistent fluid dispensing and/or dosing for an extended life of the tubing construction and/or the fluid pump.
Claims13
A tubing construction, comprising:
- at least one layer formed from a thermoplastic vulcanizate (TPV),
- wherein the tubing construction comprises a vertical rebound according to the Bashore rebound test under ASTM D2632-15 of not less than 50% and a tan delta of not greater than 0.10 as measured at 23 degrees Celsius and a frequency of 10 Hertz (Hz),
- wherein the tubing construction comprises a Shore A Hardness of not less than 50A to not greater than 70A, a flowrate stability of not greater than +/−10% for a period of not less than 500 hours, a compression set of not greater than 26% at a temperature of not less than 150 degrees Fahrenheit for not less than 20 hours, or a crosslink density of not less than 0.005×10−3 mol/cm3 to not greater than 15×10−3 mol/cm3,
- wherein the TPV comprises a crosslinked rubber and a thermoplastic resin.
1 more element
A fluid pump, comprising:
- a tubing construction comprising:
- at least one layer formed from a thermoplastic vulcanizate (TPV);
- and
- a rotor comprising one or more rollers configured to subject the tubing construction to cyclic loading and unloading to force fluid through the tubing construction,
- wherein the tubing construction comprises a vertical rebound according to the Bashore rebound test under ASTM D2632-15 of not less than 50% and a tan delta of not greater than 0.10 as measured at 23 degrees Celsius and a frequency of 10 Hertz (Hz),
- wherein the tubing construction comprises a Shore A Hardness of not less than 50A to not greater than 70A, a flowrate stability of not greater than +/−10% for a period of not less than 500 hours, a compression set of not greater than 26% at a temperature of not less than 150 degrees Fahrenheit for not less than 20 hours or a crosslink density of not less than 0.005×10−3 mol/cm3 to not greater than 15×10−3 mol/cm3,
- wherein the TPV comprises a crosslinked rubber and a thermoplastic resin.
4 more elements
Dependencies are inferred from the claim text.