JPS5495658A - Molding of polyester-polyether block copolymer - Google Patents
Molding of polyester-polyether block copolymerInfo
- 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
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
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)
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)
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)
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 |
-
1978
- 1978-01-13 JP JP53001888A patent/JPS586610B2/en not_active Expired
Patent Citations (2)
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)
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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