TUBE AND PUMP USING SAME

WIPO Patent Application WO/2021/149783

A1

[Problem] To provide a tube with excellent long-term reliability. [Solution] Provided is a tube to be used in a pump for peristaltic transportation of a fluid, the tube comprising: a flow passage that serves as a transport route for the fluid and that extends in a first direction; and a body part that is formed around the flow passage. The body part includes a first layer formed on the flow passage and a second layer formed on the first layer. The bending elastic modulus in the radial direction of the second layer is less than the bending elastic modulus in the radial direction of the first layer. When an elastic modulus ratio R1 of the first layer is the tensile elastic modulus in the circumferential direction of the first layer/the bending elastic modulus in the radial direction of the first layer, and an elastic modulus ratio R2 of the second layer is the tensile elastic modulus in the circumferential direction of the second layer/the bending elastic modulus in the radial direction of the second layer, the elastic modulus ratio R2 of the second layer is greater than the elastic modulus ratio R1 of the first layer.

YANAI KOUICHI (JP)
HAYASHI YUKIHIKO (JP)

PCT/JP2021/002116

July 29, 2021

January 21, 2021

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JUNKOSHA INC (JP)

B32B5/22; B32B1/08; B32B5/28; B32B7/022; F04B43/12; F16L11/04

WO2017094807A1	2017-06-08
WO2010050366A1	2010-05-06
WO2017094807A1	2017-06-08

JP2002502735A	2002-01-29
JP2002516625A	2002-06-04
JP2011506142A	2011-03-03
JP2017512947A	2017-05-25
JP2018015751A	2018-02-01
JPH0636832U	1994-05-17
JP4327352B2	2009-09-09
JPS5645773B2	1981-10-28
JPS5818991B2	1983-04-15

See also references of EP 4094935A4

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