JPS56136327A - Molding bent tube of reinforced plastic - Google Patents
Molding bent tube of reinforced plasticInfo
- Publication number
- JPS56136327A JPS56136327A JP4086480A JP4086480A JPS56136327A JP S56136327 A JPS56136327 A JP S56136327A JP 4086480 A JP4086480 A JP 4086480A JP 4086480 A JP4086480 A JP 4086480A JP S56136327 A JPS56136327 A JP S56136327A
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical body
- mandrel
- bent
- tube
- reinforcing material
- 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
Landscapes
- Rigid Pipes And Flexible Pipes (AREA)
- Moulding By Coating Moulds (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
PURPOSE: To obtain the titled tube in the shape of a smoothly bent cylinder with a uniform wall thickness and excellent in strength and other properties by a method wherein an uncured straight tube is formed, then the resultant cylindrical body is provided with cut grooves and is bent into an arched shape.
CONSTITUTION: A tape of paper 1 is spirally wound around a mandrel 1 provided with a cutting edge 3 projecting on the peripheral surface on the side of the tip end thereof, to obtain the cylindrical body 8. Then, a releasing film 9, a tape-shaped body 10 for protecting the inside surface of a reinforcing material layer, and a curable resin impregnated reinforcing material 11 are sequentially wound around the cylindrical body 8 to form the uncured tube 12. After producing the cut grooves 13 in the cylindrical body 8 while pushing out the uncured tube 12 from the tip end of the mandrel 1, and body 8 is cut up into segments of a predetermined length, the segment is fitted onto a mandrel 14 bent in an arched shape and is cured in a curing furnace. Due to the presence of the cut grooves 13, the cylindrical body 8 can be bent smoothly into the arched shape of the mandrel 14 while maintaining the uniform wall thickness, without ruggedness of the layer of the reinforcing material 11.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4086480A JPS56136327A (en) | 1980-03-28 | 1980-03-28 | Molding bent tube of reinforced plastic |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4086480A JPS56136327A (en) | 1980-03-28 | 1980-03-28 | Molding bent tube of reinforced plastic |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56136327A true JPS56136327A (en) | 1981-10-24 |
JPS6159227B2 JPS6159227B2 (en) | 1986-12-15 |
Family
ID=12592385
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4086480A Granted JPS56136327A (en) | 1980-03-28 | 1980-03-28 | Molding bent tube of reinforced plastic |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56136327A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5987130A (en) * | 1982-11-12 | 1984-05-19 | Nippon Sheet Glass Co Ltd | Manufacture of glass-wool cylinder |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5349074A (en) * | 1976-09-24 | 1978-05-04 | United Patents Trust Reg | Method of bending plastic sheet and product formed using same |
JPS54173072U (en) * | 1978-05-26 | 1979-12-06 |
-
1980
- 1980-03-28 JP JP4086480A patent/JPS56136327A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5349074A (en) * | 1976-09-24 | 1978-05-04 | United Patents Trust Reg | Method of bending plastic sheet and product formed using same |
JPS54173072U (en) * | 1978-05-26 | 1979-12-06 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5987130A (en) * | 1982-11-12 | 1984-05-19 | Nippon Sheet Glass Co Ltd | Manufacture of glass-wool cylinder |
JPS6356056B2 (en) * | 1982-11-12 | 1988-11-07 | Nippon Sheet Glass Co Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS6159227B2 (en) | 1986-12-15 |
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