JPS5532641A - Mehtod of manufacturing polyester pipe - Google Patents
Mehtod of manufacturing polyester pipeInfo
- Publication number
- JPS5532641A JPS5532641A JP10654478A JP10654478A JPS5532641A JP S5532641 A JPS5532641 A JP S5532641A JP 10654478 A JP10654478 A JP 10654478A JP 10654478 A JP10654478 A JP 10654478A JP S5532641 A JPS5532641 A JP S5532641A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- water
- polyester
- die
- extrusion
- 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
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
PURPOSE: To obtain a polyester pipe molded by extrusion which is superior in dimensional accuracy through keeping film heat transfer coefficient and residence time of the surface of pipe in the water within a specified scope at quenching the pipe in the water below specified temperature.
CONSTITUTION: After extrusion from a pipe die 3, polyester over 0.7 in ultimate viscosity with polyethylene terephtalate as the main constituent is formed into a pipe through a molding die 6. Then, it is quenched in the water below 15°C in a vacuum forming tank 5 and a cooling water tank 8 under the conditions that film heat transfer coefficient of the surface of pipe in the water is more than 200 Kcal/m2hr°C and residence time satisfies a formula t≥10×2(-35)×(+50) (t being residence seconds and x pipe wall thickness in mm). For prevention of drawdown at the same time, fusion viscosity of polyester at the outlet of a pipe die 3 is kept more than 7,000 poise, and also for prevention of the pipe from being crystallized to whitening, fusion temperature at one portion at least on an extruding machine is kept more than 270°C.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10654478A JPS5532641A (en) | 1978-08-31 | 1978-08-31 | Mehtod of manufacturing polyester pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10654478A JPS5532641A (en) | 1978-08-31 | 1978-08-31 | Mehtod of manufacturing polyester pipe |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5532641A true JPS5532641A (en) | 1980-03-07 |
JPS614646B2 JPS614646B2 (en) | 1986-02-12 |
Family
ID=14436302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10654478A Granted JPS5532641A (en) | 1978-08-31 | 1978-08-31 | Mehtod of manufacturing polyester pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5532641A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63162216A (en) * | 1986-12-26 | 1988-07-05 | Takiron Co Ltd | Contour extrusion resin molding and its production |
JPH0585713A (en) * | 1991-09-25 | 1993-04-06 | Agency Of Ind Science & Technol | Method for gas phase reduction of carbonic acid gas |
JP2004131552A (en) * | 2002-10-09 | 2004-04-30 | Fukuvi Chem Ind Co Ltd | Hollow molded product |
CN1299889C (en) * | 2004-12-03 | 2007-02-14 | 镇江大洋星鑫工程管道有限公司 | Temper cooling process for polyethylene pipeline for syphon |
JP2015098120A (en) * | 2013-11-19 | 2015-05-28 | 住友ゴム工業株式会社 | Extrusion molding apparatus and method for manufacturing thermoplastic elastomer molded article |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH033351U (en) * | 1989-06-01 | 1991-01-14 |
-
1978
- 1978-08-31 JP JP10654478A patent/JPS5532641A/en active Granted
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63162216A (en) * | 1986-12-26 | 1988-07-05 | Takiron Co Ltd | Contour extrusion resin molding and its production |
JPH0585713A (en) * | 1991-09-25 | 1993-04-06 | Agency Of Ind Science & Technol | Method for gas phase reduction of carbonic acid gas |
JP2004131552A (en) * | 2002-10-09 | 2004-04-30 | Fukuvi Chem Ind Co Ltd | Hollow molded product |
CN1299889C (en) * | 2004-12-03 | 2007-02-14 | 镇江大洋星鑫工程管道有限公司 | Temper cooling process for polyethylene pipeline for syphon |
JP2015098120A (en) * | 2013-11-19 | 2015-05-28 | 住友ゴム工業株式会社 | Extrusion molding apparatus and method for manufacturing thermoplastic elastomer molded article |
Also Published As
Publication number | Publication date |
---|---|
JPS614646B2 (en) | 1986-02-12 |
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