GB796588A - Improvements in or relating to freezer tray assemblies - Google Patents
Improvements in or relating to freezer tray assembliesInfo
- Publication number
- GB796588A GB796588A GB18105/56A GB1810556A GB796588A GB 796588 A GB796588 A GB 796588A GB 18105/56 A GB18105/56 A GB 18105/56A GB 1810556 A GB1810556 A GB 1810556A GB 796588 A GB796588 A GB 796588A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- tray
- dispersion
- repellant
- coated
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25C—PRODUCING, WORKING OR HANDLING ICE
- F25C1/00—Producing ice
- F25C1/22—Construction of moulds; Filling devices for moulds
- F25C1/24—Construction of moulds; Filling devices for moulds for refrigerators, e.g. freezing trays
- F25C1/246—Moulds with separate grid structure
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Cookers (AREA)
Abstract
The water-repellent coating of a domestic ice-tray consists of polytetrafluoroethylene. The tray surface is first finely roughened, e.g. by anodizing if made of preferably sintered aluminium, and then coated with an aqueous dispersion of the repellant, the dispersion including a surface-active agent obtained by condensing ethylene oxide or propylene oxide with a longchain alkyl phenol. The dispersion may include an oxidizing acid such as chromic acid to improve the bond. The coated tray is then heated gradually to remove the water without blistering and then is heated at a temperature above the melting-point of the repellant, i.e. above 700 DEG F. The coating is then toughened and improved as to transparency by quenching in water. Two coats may be applied. Specification 796,587, [Group XIII], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US796588XA | 1955-07-15 | 1955-07-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB796588A true GB796588A (en) | 1958-06-18 |
Family
ID=22151972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18105/56A Expired GB796588A (en) | 1955-07-15 | 1956-06-12 | Improvements in or relating to freezer tray assemblies |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB796588A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2125316A (en) * | 1982-08-16 | 1984-03-07 | Stolle Corp | Method for reducing ice and snow build-up on the reflecting surfaces of dish antennas |
| WO2018163332A1 (en) * | 2017-03-08 | 2018-09-13 | 三菱電機株式会社 | Automatic ice maker and freezer refrigerator |
-
1956
- 1956-06-12 GB GB18105/56A patent/GB796588A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2125316A (en) * | 1982-08-16 | 1984-03-07 | Stolle Corp | Method for reducing ice and snow build-up on the reflecting surfaces of dish antennas |
| WO2018163332A1 (en) * | 2017-03-08 | 2018-09-13 | 三菱電機株式会社 | Automatic ice maker and freezer refrigerator |
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