Title:
MULTILAYERED TUBULAR SHAPED OBJECT
Document Type and Number:
WIPO Patent Application WO/2023/002828
Kind Code:
A1
Abstract:
[Problem] To provide a multilayered tubular shaped object having high flexibility and less apt to have wrinkles in the inner surface. [Solution] A multilayered tubular shaped object 1 comprises an inner layer 2, an outer layer 3, and an interlayer 4 interposed between the inner layer 2 and the outer layer 3 to bond these layers to each other. The inner layer 2 comprises a polyolefin as a main component, the outer layer 3 comprises a thermoplastic polyurethane as a main component, and the interlayer 4 comprises an adhesive polyolefin as a main component. The proportion of the sum of the thickness T3 of the outer layer 3 and the thickness T4 of the interlayer 4 to the wall thickness TT of the multilayered tubular shaped object 1 is 0.7-0.92.
Inventors:
AOKI DAICHI (JP)
NUMATA KENICHI (JP)
NUMATA KENICHI (JP)
Application Number:
PCT/JP2022/026165
Publication Date:
January 26, 2023
Filing Date:
June 30, 2022
Export Citation:
Assignee:
TOYOX KK (JP)
International Classes:
B32B27/32; B32B1/08; F16L11/04
Foreign References:
| JP2008132659A | 2008-06-12 | |||
| JP2008039130A | 2008-02-21 | |||
| JPS59140046A | 1984-08-11 | |||
| JP2006334900A | 2006-12-14 | |||
| JPH05117409A | 1993-05-14 | |||
| JP2006021530A | 2006-01-26 | |||
| JP2013104511A | 2013-05-30 | |||
| JP2005265185A | 2005-09-29 |
Attorney, Agent or Firm:
COSMO INTERNATIONAL PATENT FIRM (JP)
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