Anti-fog film, method of packaging products having high moisture content and products thus packaged
US5766772A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1996 |
| Grant date | Jun 16, 1998 |
| Priority date | — |
| Expiry date | Nov 21, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A multi-layer heat-shrinkable film endowed with high anti-fog properties, and having a barrier layer (1), an adhesive layer (2, 2'), and an adhesive layer (3, 3'), wherein at least one external layer (3, 3') is made of a polyolefinic polymer. Said anti-fog properties are obtained by incorporating in said film from 1 to 5% by weight of a composition comprising (i) a glycerol mono-ester of a saturated or unsaturated fatty acid having from 8 to 20 carbons, (ii) a glycerol di-ester of a saturated or unsaturated fatty acid having from 8 to 20 carbons, and (iii at least one polyoxyethylene ether of a fatty alcohol having from 8 to 20 carbons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.