JPS5586723A - Molding method for tetrafluoroethylene resin cylindrical object - Google Patents
Molding method for tetrafluoroethylene resin cylindrical objectInfo
- Publication number
- JPS5586723A JPS5586723A JP16037578A JP16037578A JPS5586723A JP S5586723 A JPS5586723 A JP S5586723A JP 16037578 A JP16037578 A JP 16037578A JP 16037578 A JP16037578 A JP 16037578A JP S5586723 A JPS5586723 A JP S5586723A
- Authority
- JP
- Japan
- Prior art keywords
- partition
- core
- cylindrical object
- tetrafluoroethylene resin
- cover
- 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
- 238000000465 moulding Methods 0.000 title abstract 2
- 239000011347 resin Substances 0.000 title abstract 2
- 229920005989 resin Polymers 0.000 title abstract 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 title abstract 2
- 238000000034 method Methods 0.000 title 1
- 238000005192 partition Methods 0.000 abstract 4
- 239000000843 powder Substances 0.000 abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000001804 emulsifying effect Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
Abstract
PURPOSE: To form the subject cylindrical object having an even mechanical strength, by filling a mold with a tetrafluoroethylene resin powder and by performing a preliminary molding by pressing while the air contained is being deaerated.
CONSTITUTION: A bottom cover 4 is located at a lower end of a cylindrical outer frame 1 which has a flange and is lined with a partition 2 on an internal circumferential surface thereof, a core 9 being placed at the inside of the partition 2. The lower end of the core 9 is fitted in the inside of a projection portion 5 of the bottom cover 4. A space formed between the partition 2 and the core 9 is then filled with an emulsifying polymer powder raw material A of a tetrafluoethylene, the upper end of the core 9 being fitted in a projection portion 5 of a upper cover 9. A vacuum pump is then connected to a coupling port 7 made in the cover 4, air contained in the raw A being sucked and deaerated via a passage 8 and groove 6. Simultaneously, a pressured fluid is filled through a perforation 3 in the outer frame 1, a preliminary molded product being formed by pressing inward the partition 2. The preliminary molded product is then removed, the product being sintered by heating to produce a cylindrical object.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16037578A JPS5586723A (en) | 1978-12-23 | 1978-12-23 | Molding method for tetrafluoroethylene resin cylindrical object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16037578A JPS5586723A (en) | 1978-12-23 | 1978-12-23 | Molding method for tetrafluoroethylene resin cylindrical object |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5586723A true JPS5586723A (en) | 1980-06-30 |
Family
ID=15713600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16037578A Pending JPS5586723A (en) | 1978-12-23 | 1978-12-23 | Molding method for tetrafluoroethylene resin cylindrical object |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5586723A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008260191A (en) * | 2007-04-11 | 2008-10-30 | Daikin Ind Ltd | Polytetrafluoroethylene fine powder molding method, preform and molded product |
| CN103831920A (en) * | 2014-03-07 | 2014-06-04 | 丹阳市宏益精密仪器厂 | Method for manufacturing polytetrafluoroethylene small-caliber volumetric flask |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2929109A (en) * | 1954-12-30 | 1960-03-22 | Charles N Cresap | Method for molding pulverulent material |
-
1978
- 1978-12-23 JP JP16037578A patent/JPS5586723A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2929109A (en) * | 1954-12-30 | 1960-03-22 | Charles N Cresap | Method for molding pulverulent material |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008260191A (en) * | 2007-04-11 | 2008-10-30 | Daikin Ind Ltd | Polytetrafluoroethylene fine powder molding method, preform and molded product |
| CN103831920A (en) * | 2014-03-07 | 2014-06-04 | 丹阳市宏益精密仪器厂 | Method for manufacturing polytetrafluoroethylene small-caliber volumetric flask |
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