Title:
BRANCH PIPE LINING MATERIAL AND MANUFACTURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/238497
Kind Code:
A1
Abstract:
According to the present invention, a plurality of separation pieces 10c are formed by folding one end of a tubular resin absorbing material and cutting the tip part thereof to be separated into petals. The separation pieces are arranged in a ring-shaped recessed part formed in a lower flange 30 made of a thermoplastic resin. An upper flange 20 made of a thermoplastic resin is closely attached to the lower flange, and the separation pieces are held between the upper flange and the lower flange. The upper flange, the lower flange, and the separation pieces are bonded by an adhesive 40 applied to the recessed part of the lower flange to manufacture an integrated branch pipe lining material.
Inventors:
KAMIYAMA TAKAO (JP)
KAMIYAMA KAZUHIRO (JP)
KATSUMATA HIRONOBU (JP)
ISHIDA MAKOTO (JP)
KAMIYAMA KAZUHIRO (JP)
KATSUMATA HIRONOBU (JP)
ISHIDA MAKOTO (JP)
Application Number:
PCT/JP2023/014323
Publication Date:
December 14, 2023
Filing Date:
April 07, 2023
Export Citation:
Assignee:
SHONAN GOSEI JUSHI SEISAKUSHO KK (JP)
International Classes:
B29C63/36; B29C65/48; F16L1/00
Foreign References:
| JP2008038393A | 2008-02-21 | |||
| JP2000037777A | 2000-02-08 | |||
| JP2011156689A | 2011-08-18 | |||
| US20220026008A1 | 2022-01-27 |
Attorney, Agent or Firm:
HAYAKAWA Yuzi et al. (JP)
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