JPS5532641A - Mehtod of manufacturing polyester pipe - Google Patents

Mehtod of manufacturing polyester pipe

Info

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
Application number
JP10654478A
Other languages
Japanese (ja)
Other versions
JPS614646B2 (en
Inventor
Takashige Kato
Yoshio Toyoda
Isamu Kimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Ester Co Ltd
Original Assignee
Nippon Ester Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Ester Co Ltd filed Critical Nippon Ester Co Ltd
Priority to JP10654478A priority Critical patent/JPS5532641A/en
Publication of JPS5532641A publication Critical patent/JPS5532641A/en
Publication of JPS614646B2 publication Critical patent/JPS614646B2/ja
Granted legal-status Critical Current

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
JP10654478A 1978-08-31 1978-08-31 Mehtod of manufacturing polyester pipe Granted JPS5532641A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH033351U (en) * 1989-06-01 1991-01-14

Cited By (5)

* Cited by examiner, † Cited by third party
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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