Title:
発泡管継手
Document Type and Number:
Japanese Patent JP6709079
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress formation of a cavity to prevent deterioration of expansion/contraction fatigue strength.SOLUTION: A foam pipe joint has a body part 11 and a reception part 12 formed integrally with an opening part of the body part 11, and is formed of thermoplastic resin. A body thick part of the body part 11 has a foam layer ratio of 70-95%, and the reception part 12 has a foam layer ratio of 20-95%. The body part 11 has an average bubble diameter of 0.03-0.24 mm in a region of 1 mm from a surface layer, 0.02-0.03 mm in a region of a half distance of a pipe in a thickness direction from a surface, and 0.02-0.03 mm in a region of a quarter of the pipe in the thickness direction from the surface.SELECTED DRAWING: Figure 1
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Inventors:
Taiki Kujuku
Matsunaga Tamotsu
Yoshihiro Kubo
Toyomasa Matsumura
Yoshinosuke Noguchi
Matsunaga Tamotsu
Yoshihiro Kubo
Toyomasa Matsumura
Yoshinosuke Noguchi
Application Number:
JP2016040399A
Publication Date:
June 10, 2020
Filing Date:
March 02, 2016
Export Citation:
Assignee:
Sekisui Chemical Co.,Ltd.
International Classes:
F16L47/00; F16L47/32
Domestic Patent References:
| JP7217934A | ||||
| JP2016023761A | ||||
| JP2006315388A | ||||
| JP2001315153A | ||||
| JP2002240124A | ||||
| JP49053261A | ||||
| JP2007283733A | ||||
| JP2002012691A |
Attorney, Agent or Firm:
Yoshifumi Saeki
Ryuichiro Mori
Makiko Otsuki
Yuichiro Kawagoe
Ryuichiro Mori
Makiko Otsuki
Yuichiro Kawagoe