Containers having improved gas barrier properties
US4424242A · kind A · utility
23Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 25, 1983 |
| Grant date | Jan 3, 1984 |
| Priority date | — |
| Expiry date | Apr 25, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention provides novel multilayer packaging materials having improved resistance to gas permeability. The present invention also provides containers which are formed from the novel packaging material. The multilayer packaing material comprises at least one film comprising polyglycolic acid and at least one film formed from a polyester comprising units derived from terephthalic acid and ethylene glycol. The containers which are provided by the present invention may be in the form of sheet, film, molded articles, such as bottles, and other such structures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.