Anti-fogging multilayered film and bag produced therefrom for packaging vegetables and fruits
US4876146A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1987 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Apr 29, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31938
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An anti-fogging multilayered film suitable for packaging fresh vegetables and fruits comprising a base layer and at least one surface layer containing an anti-fogging agent, said film having a water vapor transmission of 15 to 200 g/m.sup.2 .multidot.24 hrs.multidot.40.degree. C., an oxygen permeability of 3,000 to 35,000 cc/m.sup.2 .multidot.24 hr.multidot.atm.multidot.20.degree. C..multidot.90% RH, and a carbon dioxide permeability of 12,000 to 130,000 cc/m.sup.2 .multidot.24 hr.multidot.20.degree.C..multidot.90% RH, and said anti-fogging surface layer having heat sealing properties. A packaging bag produced from this film is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.