Cellulose packaging films for packaging soft cheeses
US4276340A · kind A · utility
11Cited by
11References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1979 |
| Grant date | Jun 30, 1981 |
| Priority date | — |
| Expiry date | Jun 27, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/254
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A cellulose packaging film for packaging soft cheeses has a controlled permeability to oxygen, carbon dioxide, ammonia and water vapor which allows the cheese to properly ripen while wrapped in the packaging material. The cellulose packaging film is formed from a cellulose film substrate with a coating layer of a nitrocellulose varnish having distributed therein casein or starch particles which have a diameter which is greater than the thickness of the coating layer. In use, the soft cheese is wrapped with the cellulose packaging film with the nitrocellulose varnish layer facing the soft cheese.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.