JPS5594936A - Drying of polyester copolymer chips - Google Patents
Drying of polyester copolymer chipsInfo
- Publication number
- JPS5594936A JPS5594936A JP189979A JP189979A JPS5594936A JP S5594936 A JPS5594936 A JP S5594936A JP 189979 A JP189979 A JP 189979A JP 189979 A JP189979 A JP 189979A JP S5594936 A JPS5594936 A JP S5594936A
- Authority
- JP
- Japan
- Prior art keywords
- chips
- temperature
- crystallization
- drying
- dryer
- 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.)
- Pending
Links
- 238000001035 drying Methods 0.000 title abstract 7
- 229920000728 polyester Polymers 0.000 title abstract 3
- 238000002425 crystallisation Methods 0.000 abstract 7
- 230000008025 crystallization Effects 0.000 abstract 7
- 230000004927 fusion Effects 0.000 abstract 2
- 230000000977 initiatory effect Effects 0.000 abstract 2
- 206010013786 Dry skin Diseases 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 230000009477 glass transition Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
Landscapes
- Processes Of Treating Macromolecular Substances (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
PURPOSE: To reduce mutual fusion of chips and deposition to an inner wall of a dryer in drying by a method wherein, in feeding polyester copolymer chips into a dryer, drying is carried out while crystallization temperature after feeding and dry- ing temperature after crystallization are maintained at a predetermined temperature.
CONSTITUTION: In drying polyester copolymer chips by heating, the temperature within a dryer when feeding the chips is maintained within a range from above glass transition point Tg(°C) of the chips to below Tg+15(°C), and the temperature within a dryer after chip feeding is raised to a temperature range from above crystallization initiating point Tc(°C) of the chips to below Tc+5(°C) to crystallize the chips. Thereafter drying is carried out at a drying temperature above Tc+15(°C). The crystallization temperature must be above a crystallization initiating point and it is effective to keep the temperature as low as possible. If the crystallization point is high, the fusion of chips is generated because plasticization predominates and predrying effect by crystallization is reduced.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP189979A JPS5594936A (en) | 1979-01-11 | 1979-01-11 | Drying of polyester copolymer chips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP189979A JPS5594936A (en) | 1979-01-11 | 1979-01-11 | Drying of polyester copolymer chips |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5594936A true JPS5594936A (en) | 1980-07-18 |
Family
ID=11514422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP189979A Pending JPS5594936A (en) | 1979-01-11 | 1979-01-11 | Drying of polyester copolymer chips |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5594936A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007160581A (en) * | 2005-12-12 | 2007-06-28 | Star Seiki Co Ltd | Method and apparatus for dehumidifying and drying resin pellet |
| JP2011514268A (en) * | 2008-02-12 | 2011-05-06 | ガラ・インダストリーズ・インコーポレイテッド | Method and machine for achieving polymer crystallization utilizing multiple processing systems |
| US9259857B2 (en) | 2008-02-12 | 2016-02-16 | Gala Industries, Inc. | Method and apparatus to condition polymers utilizing multiple processing systems |
-
1979
- 1979-01-11 JP JP189979A patent/JPS5594936A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007160581A (en) * | 2005-12-12 | 2007-06-28 | Star Seiki Co Ltd | Method and apparatus for dehumidifying and drying resin pellet |
| JP2011514268A (en) * | 2008-02-12 | 2011-05-06 | ガラ・インダストリーズ・インコーポレイテッド | Method and machine for achieving polymer crystallization utilizing multiple processing systems |
| US9259857B2 (en) | 2008-02-12 | 2016-02-16 | Gala Industries, Inc. | Method and apparatus to condition polymers utilizing multiple processing systems |
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