JPS56156309A - Underdrainage pipe - Google Patents
Underdrainage pipeInfo
- Publication number
- JPS56156309A JPS56156309A JP5927980A JP5927980A JPS56156309A JP S56156309 A JPS56156309 A JP S56156309A JP 5927980 A JP5927980 A JP 5927980A JP 5927980 A JP5927980 A JP 5927980A JP S56156309 A JPS56156309 A JP S56156309A
- Authority
- JP
- Japan
- Prior art keywords
- strings
- bridging
- periphery
- synthetic resin
- rings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To increase resistance to soil pressure in spite of a lesser amount of a resin used in an underdrainage pipe by providing synthetic resin frame rings at intervals through bridging strings and bonding a synthetic resin string with the periphery of the rings by heating so as to form a water permeable film.
CONSTITUTION: Bridging strings 2 of a synthetic resin are continuously extruded as the warp through an extrusion die, and also large-size frame rings 1 are extruded as the woof intermittently. At the same time as both the bridging strings 2 and the frame rings 1 are molded by extrusion, the surface strings 3 of the pipe wall 5 are continuously extruded as the warp from the periphery of the same die and bonded to the periphery of the frame rings 1. And, they are taken out while being cooled for solidification.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5927980A JPS6017893B2 (en) | 1980-05-02 | 1980-05-02 | culvert drain pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5927980A JPS6017893B2 (en) | 1980-05-02 | 1980-05-02 | culvert drain pipe |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56156309A true JPS56156309A (en) | 1981-12-03 |
JPS6017893B2 JPS6017893B2 (en) | 1985-05-07 |
Family
ID=13108782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5927980A Expired JPS6017893B2 (en) | 1980-05-02 | 1980-05-02 | culvert drain pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6017893B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5943527U (en) * | 1982-09-10 | 1984-03-22 | タキロン株式会社 | culvert drain pipe |
JPS60154425U (en) * | 1984-03-23 | 1985-10-15 | タキロン株式会社 | culvert drain pipe |
EP0721027A1 (en) * | 1994-12-27 | 1996-07-10 | Showa Shell Sekiyu Kabushiki Kaisha | Drainage system for use with paved road |
-
1980
- 1980-05-02 JP JP5927980A patent/JPS6017893B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5943527U (en) * | 1982-09-10 | 1984-03-22 | タキロン株式会社 | culvert drain pipe |
JPS60154425U (en) * | 1984-03-23 | 1985-10-15 | タキロン株式会社 | culvert drain pipe |
EP0721027A1 (en) * | 1994-12-27 | 1996-07-10 | Showa Shell Sekiyu Kabushiki Kaisha | Drainage system for use with paved road |
Also Published As
Publication number | Publication date |
---|---|
JPS6017893B2 (en) | 1985-05-07 |
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