JPS5495658A - Molding of polyester-polyether block copolymer - Google Patents

Molding of polyester-polyether block copolymer

Info

Publication number
JPS5495658A
JPS5495658A JP188878A JP188878A JPS5495658A JP S5495658 A JPS5495658 A JP S5495658A JP 188878 A JP188878 A JP 188878A JP 188878 A JP188878 A JP 188878A JP S5495658 A JPS5495658 A JP S5495658A
Authority
JP
Japan
Prior art keywords
strand
belts
block copolymer
cooled
speed
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
JP188878A
Other languages
Japanese (ja)
Other versions
JPS586610B2 (en
Inventor
Shunji Nakazawa
Michihiko Tanaka
Tsutomu Sato
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP53001888A priority Critical patent/JPS586610B2/en
Publication of JPS5495658A publication Critical patent/JPS5495658A/en
Publication of JPS586610B2 publication Critical patent/JPS586610B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Forwarding And Storing Of Filamentary Material (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Glanulating (AREA)
  • Structure Of Belt Conveyors (AREA)

Abstract

PURPOSE: To obtain chips with little dispersion of desired shapes and dimensions, free from mutual cohesion, by making the crystallinity of a block copolymer strand a specific value while cooling and conveying the strand with grooved belts and flat belts in a cooling tank.
CONSTITUTION: A molten block copolymer consisting of polytetramethylene terephthalate and poly-tetramethylene glycol components as main structural units is extruded from a die opening into a strand, which is conveyed at a speed of 20W 80 m/min while being separated respectively and cooled with a pair of grooved belts set in a cooling tank, then conveyed at a speed of 40W130 m/min while being held by a pair of flat belts and cooled in the same tank. The speed of the flat belts is 1.5W3.0 times that of the grooved belts to crystallize and draw the strands moderately, thus giving the crystallinity of 5W60%, preferably 10W40%. The cooled strand is then dehydrated and cut.
COPYRIGHT: (C)1979,JPO&Japio
JP53001888A 1978-01-13 1978-01-13 Method for molding polyester polyether block copolymer chips Expired JPS586610B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53001888A JPS586610B2 (en) 1978-01-13 1978-01-13 Method for molding polyester polyether block copolymer chips

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53001888A JPS586610B2 (en) 1978-01-13 1978-01-13 Method for molding polyester polyether block copolymer chips

Publications (2)

Publication Number Publication Date
JPS5495658A true JPS5495658A (en) 1979-07-28
JPS586610B2 JPS586610B2 (en) 1983-02-05

Family

ID=11514103

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53001888A Expired JPS586610B2 (en) 1978-01-13 1978-01-13 Method for molding polyester polyether block copolymer chips

Country Status (1)

Country Link
JP (1) JPS586610B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002275271A (en) * 2001-03-22 2002-09-25 Kanebo Ltd Method for polyester production

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62186163A (en) * 1986-02-07 1987-08-14 Daikin Ind Ltd Prevention of chattering in air-conditioning machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5137937A (en) * 1974-09-27 1976-03-30 Nippon Steel Corp PEESUTOJOBUTSUSHITSU NO DENKISH INTOTOFUHO
JPS5242149U (en) * 1975-09-17 1977-03-25

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5137937A (en) * 1974-09-27 1976-03-30 Nippon Steel Corp PEESUTOJOBUTSUSHITSU NO DENKISH INTOTOFUHO
JPS5242149U (en) * 1975-09-17 1977-03-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002275271A (en) * 2001-03-22 2002-09-25 Kanebo Ltd Method for polyester production

Also Published As

Publication number Publication date
JPS586610B2 (en) 1983-02-05

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