Package capable of preventing foam formation, method of manufacturing such a package, and antifoaming agent
US4876122A · kind A · utility
2Cited by
5References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 22, 1988 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Mar 22, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31993
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A package capable of preventing the formation of foam when being filled with liquid aqueous products, in which at least a part of the inside of the package is coated on the inside with an antifoaming agent which comprises an antifoaming, water-insoluble compound encapsulated in crystalline urea. In the manufacture of the package, the crystalline urea and the antifoaming compound are dissolved in a mixture of water and an organic solvent forming a solution, and applying the solution to at least a part of the inner side of the material forming the package, whereupon the solvent is driven off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.