JPS5511867A - Resin tube manufacturing method - Google Patents
Resin tube manufacturing methodInfo
- Publication number
- JPS5511867A JPS5511867A JP8539978A JP8539978A JPS5511867A JP S5511867 A JPS5511867 A JP S5511867A JP 8539978 A JP8539978 A JP 8539978A JP 8539978 A JP8539978 A JP 8539978A JP S5511867 A JPS5511867 A JP S5511867A
- Authority
- JP
- Japan
- Prior art keywords
- core
- air
- tape
- outside
- grooves
- 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.)
- Pending
Links
Landscapes
- Moulding By Coating Moulds (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
PURPOSE: To obtain a resin tube which has uniform flexibility and has a smooth inner surface by providing air passages which go through a hollow section and reach the outside at the bottom of a molding core that has grooves around the outer surface, thus removing the air being trapped when a releasing tape was wrapped around.
CONSTITUTION: Several narrow grooves 10 are provided to a mold 11 alongside the center line of a molding core. These grooves 10 go through air passages 15 that pass through a hollow section 12, and each the outside at openings in a side face 11a of the molding core 1. The air trapped by a releasing tape 6 is unable to escape to outside of the core 1 because it is sealed by the releasing tape 6. But the air being expanded by heat, moves toward the radial direction of the core 1 by wrapping pressure of either the tape 6 or tube molding elements 3 and 4; thus it is collected in the grooves, then is released to the outside of the core 1 through the air passages 15. Therefore, no air bubbles are left between the core 1 and the tape 6.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8539978A JPS5511867A (en) | 1978-07-12 | 1978-07-12 | Resin tube manufacturing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8539978A JPS5511867A (en) | 1978-07-12 | 1978-07-12 | Resin tube manufacturing method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5511867A true JPS5511867A (en) | 1980-01-28 |
Family
ID=13857692
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8539978A Pending JPS5511867A (en) | 1978-07-12 | 1978-07-12 | Resin tube manufacturing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5511867A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6267317A (en) * | 1985-09-20 | 1987-03-27 | Honda Motor Co Ltd | Fiber reinforced synthetic resin pipe |
JPS6478825A (en) * | 1987-09-19 | 1989-03-24 | Noriji Hattori | Manufacture of frp pipe |
-
1978
- 1978-07-12 JP JP8539978A patent/JPS5511867A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6267317A (en) * | 1985-09-20 | 1987-03-27 | Honda Motor Co Ltd | Fiber reinforced synthetic resin pipe |
JPS6478825A (en) * | 1987-09-19 | 1989-03-24 | Noriji Hattori | Manufacture of frp pipe |
JPH0375340B2 (en) * | 1987-09-19 | 1991-11-29 |
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