Flexible tube
US12085195B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 2023 |
| Grant date | Sep 10, 2024 |
| Priority date | — |
| Expiry date | Jun 15, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2597/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A flexible tube includes at least a first resin layer which includes a fluororesin and has a thickness of 0.05 to 0.5 mm and 1 to 16% of the overall thickness of the flexible tube, and a second resin layer which is provided on an outer side of the first resin layer and includes a thermoplastic resin different from that in the first resin layer, wherein in the fluororesin, the flexural modulus measured by ASTM D790 is 500 to 1200 MPa, and the ratio (A)/(B), which is obtained by FTIR measurement, of the peak area (A) corresponding to C—H bonds at a wavenumber of 1400 to 1500 cm−1 to the peak area (B) corresponding to C—F bonds at a wavenumber of 1000 to 1100 cm−1 is 0.2 to 4.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.