CN2081560U - Polyester film direct electret device - Google Patents
Polyester film direct electret device Download PDFInfo
- Publication number
- CN2081560U CN2081560U CN 90225977 CN90225977U CN2081560U CN 2081560 U CN2081560 U CN 2081560U CN 90225977 CN90225977 CN 90225977 CN 90225977 U CN90225977 U CN 90225977U CN 2081560 U CN2081560 U CN 2081560U
- Authority
- CN
- China
- Prior art keywords
- polyester film
- electret
- ground electrode
- metallic plate
- power supply
- 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.)
- Expired - Lifetime
Links
- 229920006267 polyester film Polymers 0.000 title claims abstract description 31
- 239000005361 soda-lime glass Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 4
- 229910052751 metal Inorganic materials 0.000 abstract description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 239000011140 metalized polyester Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000006263 metalation reaction Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
Images
Landscapes
- Laminated Bodies (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The utility model discloses a direct electret device of polyester film that surface is not metallized, it includes direct current high voltage power supply 4, ground electrode metal sheet 1, corona discharge needle 3 and polyester film 2, adds one deck soda glass 5 between its characterized in that polyester film and the ground electrode metal sheet. The electret obtained by the device has high and uniform surface charge density, simple manufacturing process and low cost.
Description
The utility model relates to the manufacturing installation of electret, is a kind of device to the direct electret of the not metallized polyester film in surface specifically.
Known corona discharge method is during to the polyester film electret, must earlier polyester film be condensed and be fixed on (GB2058454A) on the metal forming, or with polyester film single face evaporation last layer metal (clear and 56-122120), the one side that then polyester film has been metallized is as ground electrode, and not metallized another side carries out electret facing to electrion pin or discharge silk, above-mentioned technical process more complicated with the polyester film surface metalation, electret manufacturing cost height.If the not metallized polyester film in surface is placed directly in as electret on the metallic plate of ground electrode, the electret surface charge skewness of Zhi Zaoing then, the electret charge density that in the low atmosphere of humidity, is obtained central authorities' height and edge is low; The then central low and edge's height of the electret charge density that in the high atmosphere of humidity, is obtained.
The purpose of this utility model provides that a kind of manufacturing process is simple, and cost is low, the direct electret device of the uniform polyester film of electret surface charge distribution that is obtained.
For achieving the above object, the utility model is to set up one deck soda-lime glass between the polyester film of the metallic plate of ground electrode and surperficial not metalized, the direct electret device of a kind of specifically polyester film comprises DC high-voltage power supply, with ground electrode metallic plate and corona discharge needle and the polyester film between ground electrode metallic plate and corona discharge needle that the positive and negative end of DC high-voltage power supply is connected respectively, between polyester film and ground electrode metallic plate, establish one deck soda-lime glass.The soda-lime glass of being set up not only can reduce polyester film and contact inhomogeneous influence to electret with the ground electrode metallic plate, make the polyester film electret sheet surface charge distribution that is obtained even, and can improve the puncture voltage of space corona discharge, thereby improved the charge density of polyester film electret.Use the utility model, polyester film need not to do surperficial metalized, and it is simple to make polyester film electret technology, and production cost is low.
Now in conjunction with the accompanying drawings and embodiments the utility model is described further:
Fig. 1 is the direct electret device of a polyester film schematic diagram.
As shown in Figure 1, the direct electret device of polyester film comprises DC high-voltage power supply 4, the ground electrode metallic plate 1 that is connected with DC high-voltage power supply 4 anodes, the corona discharge needle 3 that is connected with DC high-voltage power supply 4 negative terminals, polyester film 2 between ground electrode metallic plate 1 and corona discharge needle 3 is established one deck soda-lime glass 5 between polyester film 2 and ground electrode metallic plate 1.Spray point 3 usefulness stainless steels are made, and 1.5 millimeters of diameters are installed on the organosilicon Powder micarex top cover 6, and the distance between the spray point 3 is 4 centimetres, pointed end, and most advanced and sophisticated distance to polyester film 2 is 2～2.3 millimeters.In the utility model, DC high-voltage power supply 4 is known, selects 23KV for use, and ground electrode metallic plate 1 is a copper coin, and polyester film 2 is a polytetrafluoroethylene, 200 microns of thickness, and soda-lime glass 5 thickness are 3 millimeters.3 minutes gained polyester films of electret electret voltage is 10KV, and its surface charge density is evenly distributed.In contrast, when not establishing soda-lime glass 5, high pressure can only be added to 10KV, otherwise punctures, and the voltage of electret only is 3KV, and surface charge distribution is inhomogeneous.
Claims (1)
1, the direct electret device of a kind of polyester film, comprise DC high-voltage power supply 4, the ground electrode metallic plate 1 and the corona discharge needle 3 that are connected with these DC high-voltage power supply 4 positive and negative ends, and the polyester film 2 between ground electrode metallic plate 1 and corona discharge needle 3, it is characterized in that establishing one deck soda-lime glass 5 between polyester film 2 and the ground electrode metallic plate 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90225977 CN2081560U (en) | 1990-12-19 | 1990-12-19 | Polyester film direct electret device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90225977 CN2081560U (en) | 1990-12-19 | 1990-12-19 | Polyester film direct electret device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2081560U true CN2081560U (en) | 1991-07-24 |
Family
ID=4903318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90225977 Expired - Lifetime CN2081560U (en) | 1990-12-19 | 1990-12-19 | Polyester film direct electret device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2081560U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100505359C (en) * | 2006-10-12 | 2009-06-24 | 同济大学 | Method for producing controllable microhole structural piezoelectric functional film |
| CN101946295B (en) * | 2008-02-22 | 2012-11-28 | 旭硝子株式会社 | Electret and electrostatic induction conversion device |
-
1990
- 1990-12-19 CN CN 90225977 patent/CN2081560U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100505359C (en) * | 2006-10-12 | 2009-06-24 | 同济大学 | Method for producing controllable microhole structural piezoelectric functional film |
| CN101946295B (en) * | 2008-02-22 | 2012-11-28 | 旭硝子株式会社 | Electret and electrostatic induction conversion device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |