JPS5486573A - Production of porous polytetrafluoroethylene article - Google Patents
Production of porous polytetrafluoroethylene articleInfo
- Publication number
- JPS5486573A JPS5486573A JP15595077A JP15595077A JPS5486573A JP S5486573 A JPS5486573 A JP S5486573A JP 15595077 A JP15595077 A JP 15595077A JP 15595077 A JP15595077 A JP 15595077A JP S5486573 A JPS5486573 A JP S5486573A
- Authority
- JP
- Japan
- Prior art keywords
- article
- drawn
- micropores
- adjust
- pore diameter
- 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
Landscapes
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
PURPOSE: To adjust the pore diameter of a porous PTFE article having improved mechanical strength and dimensional stability, by treating a drawn PEEF, wherein innumerable pores are formed by drawing, with an organic solvent.
CONSTITUTION: An unsintered molded PTEF is drawn uni-or multiaxially to give a drawn ratio in the respective directions of 10%or higher. The drawn article having innumerable micropores thus formed is brought into contact with an organic solvelt, e.g. toluene, etc. to penetrate it into the micropores, and the solvent in the micropores is evaporated and removed while keeping the article shrinkable in the recovering direction to the original state to adjust the pore diameter. The article is then heat-treated, preferably at 250°C or above while regulating the length in the drawing direction of the article, thus giving a porous article.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15595077A JPS5486573A (en) | 1977-12-23 | 1977-12-23 | Production of porous polytetrafluoroethylene article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15595077A JPS5486573A (en) | 1977-12-23 | 1977-12-23 | Production of porous polytetrafluoroethylene article |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5486573A true JPS5486573A (en) | 1979-07-10 |
Family
ID=15617064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15595077A Pending JPS5486573A (en) | 1977-12-23 | 1977-12-23 | Production of porous polytetrafluoroethylene article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5486573A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003045666A1 (en) * | 2001-11-21 | 2003-06-05 | Atrium Medical Corporation | Method for treating expandable polymer materials and products produced therefrom |
| US6923927B2 (en) | 2000-10-03 | 2005-08-02 | Atrium Medical Corporation | Method for forming expandable polymers having drugs or agents included therewith |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4856763A (en) * | 1971-11-10 | 1973-08-09 | ||
| JPS49117568A (en) * | 1973-03-13 | 1974-11-09 | ||
| JPS49118760A (en) * | 1973-03-19 | 1974-11-13 |
-
1977
- 1977-12-23 JP JP15595077A patent/JPS5486573A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4856763A (en) * | 1971-11-10 | 1973-08-09 | ||
| JPS49117568A (en) * | 1973-03-13 | 1974-11-09 | ||
| JPS49118760A (en) * | 1973-03-19 | 1974-11-13 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6923927B2 (en) | 2000-10-03 | 2005-08-02 | Atrium Medical Corporation | Method for forming expandable polymers having drugs or agents included therewith |
| WO2003045666A1 (en) * | 2001-11-21 | 2003-06-05 | Atrium Medical Corporation | Method for treating expandable polymer materials and products produced therefrom |
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