Title:
TUBE
Document Type and Number:
WIPO Patent Application WO/2021/149782
Kind Code:
A1
Abstract:
[Problem] To provide a tube provided with excellent long-term reliability. [Solution] A tube characterized by comprising an impregnated sheet-shaped member which is formed by impregnating a sheet-shaped substrate having holes with a thermosetting resin, and which the combined thickness of the sheet-shaped substrate and the thermosetting resin constitutes a single layer, the impregnated sheet-shaped member being layered in a state of being concentrically wound so that a lumen which serves as a fluid flow channel is formed, and at least either the sheet-shaped substrate or the thermosetting resin being a different material or structure from the innermost layer to the outermost layer, whereby the impregnated sheet-shaped member has n peripheral structures differing in material or structure from a first peripheral structure adjacent to the lumen to an nth peripheral structure, the elastic modulus in the circumferential direction of the nth peripheral structure being lower than the elastic modulus in the circumferential direction of the (n-1)th peripheral structure.
Inventors:
YANAI KOUICHI (JP)
HAYASHI YUKIHIKO (JP)
HAYASHI YUKIHIKO (JP)
Application Number:
PCT/JP2021/002115
Publication Date:
July 29, 2021
Filing Date:
January 21, 2021
Export Citation:
Assignee:
JUNKOSHA INC (JP)
International Classes:
B32B5/22; B32B1/08; B32B5/28; B32B7/022; F04B43/12; F16L11/04
Domestic Patent References:
| WO2017094807A1 | 2017-06-08 |
Foreign References:
| JP2002502735A | 2002-01-29 | |||
| JP2002516625A | 2002-06-04 | |||
| JP2011506142A | 2011-03-03 | |||
| JP2017512947A | 2017-05-25 | |||
| JP2018015751A | 2018-02-01 |
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