CN1286019A - Process for improving anti-fogging property of film for greenhouse - Google Patents
Process for improving anti-fogging property of film for greenhouse Download PDFInfo
- Publication number
- CN1286019A CN1286019A CN00121316A CN00121316A CN1286019A CN 1286019 A CN1286019 A CN 1286019A CN 00121316 A CN00121316 A CN 00121316A CN 00121316 A CN00121316 A CN 00121316A CN 1286019 A CN1286019 A CN 1286019A
- Authority
- CN
- China
- Prior art keywords
- canopy film
- film
- fogging property
- contact angle
- property
- 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
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
Landscapes
- Laminated Bodies (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
Abstract
A process for preparing anti-fogging film of agricultural greenhouse features that the internal surface (or layer) of said film has fluffs or pile structure to make its contact angle relative to water drop close to zero, realizing anti-fogging.
Description
The present invention relates to the anti-fogging property problem of agricultural canopy film.
At present, in the prior art, the anti-fogging property of canopy film (also claiming anti-drop property), all be to lean against in the canopy film production process, add antifogging agent (being surfactant) and realize, As time goes on, surfactant can ooze out gradually and pour off, and anti-fogging property can only be kept about 6-7 month.
The overlength longevity horticultural covering film that China produces, can reach 3-5 its service life, do not have only 5-6 month and there is the lasting period of dripping.
As seen, keeping the anti-fogging property of canopy film lasting for a long time, is a difficult problem that needs to be resolved hurrily.
Task of the present invention is exactly the anti-fogging property that will fundamentally solve the canopy film, makes the canopy film bring into play bigger effect in agricultural production.
The present invention has broken through the existing thoughtcast that solves canopy film anti-fogging property with chemical assistant (antifogging agent), but by changing the surface texture of canopy film inwall, being about to level and smooth surface makes velvet-like, improve its wetting tension, make the contact angle of water droplet and book film very little or equal zero, the surface tension of water is close with the wetting tension of film or identical, and water droplet then forms continuous water film flow to lower, realizes that the lasting nothing of canopy film is dripped.
Realize that the technology of the present invention mode is simple, use physical method, as film one side surface of dripping being arranged with fine sand cloth friction fluffing with existing, be the fine hair shape, the downward covering of hair side just becomes does not have the film of dripping.The present invention is able to abundant checking in production practices, it is lasting that it does not have the final body of dripping.For the ease of batch production production, objects such as useable glass, iron, porcelain are done round rolling, rub mutually with the film of dripping surface is arranged by mechanical rotation, film surface nappy hair.
Owing to do not add dripless agent, can reduce canopy film cost, reduce and pollute, inwall is the fine hair shape, and light is had certain regulating action, does not influence other performance of canopy film.
Claims (1)
1, the present invention is by changing the structure of canopy film inner wall surface, reach hydrophilic effect, with prior art---realize that by adding antifogging agent (being hydrophilic substance) anti-fogging property of canopy film has difference in essence, whether the canopy film has anti-fogging property (anti-drop property), the size that depends on the contact angle of face and water droplet, contact angle is more little, anti-fogging property is good more, present technique is that the inner wall surface of canopy film is made fine hair or flannelette structure, the contact angle of itself and water droplet is gone to zero, this is the notable attribute of this invention technology, no matter take which kind of process means, so long as the inner wall surface (or internal layer) of canopy film is made fine hair or flannelette configuration state, solve canopy film anti-fogging property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001213164A CN1143611C (en) | 2000-07-19 | 2000-07-19 | Process for improving anti-fogging property of film for greenhouse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001213164A CN1143611C (en) | 2000-07-19 | 2000-07-19 | Process for improving anti-fogging property of film for greenhouse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1286019A true CN1286019A (en) | 2001-03-07 |
| CN1143611C CN1143611C (en) | 2004-03-31 |
Family
ID=4588722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001213164A Expired - Fee Related CN1143611C (en) | 2000-07-19 | 2000-07-19 | Process for improving anti-fogging property of film for greenhouse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1143611C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106718424A (en) * | 2017-01-20 | 2017-05-31 | 中国热带农业科学院热带生物技术研究所 | Surface band mulch film villous |
-
2000
- 2000-07-19 CN CNB001213164A patent/CN1143611C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106718424A (en) * | 2017-01-20 | 2017-05-31 | 中国热带农业科学院热带生物技术研究所 | Surface band mulch film villous |
| CN106718424B (en) * | 2017-01-20 | 2020-07-10 | 中国热带农业科学院热带生物技术研究所 | Mulching film with fluff on surface |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1143611C (en) | 2004-03-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040331 Termination date: 20130719 |