Plastics container for pressurized carbonated beverages
US4181239A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1978 |
| Grant date | Jan 1, 1980 |
| Priority date | — |
| Expiry date | Mar 8, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249922
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A cylindrical container body for packaging pressurized carbonated beverages, comprising (a) at least one film of a synthetic or semi-synthetic organic polymer having a permeability to oxygen lower than 6.times.10.sup.-13 ml.cm/cm.sup.2.sec.cm of mercury at 25.degree. C. and 0% relative air humidity; (b) at least two films of a polyester; and (c) at least two layers of an organic thermoplastic binder having a permeability to water vapor lower than 1.times.10.sup.-14 g.cm/cm.sup.2.sec.cm of mercury at 38.degree. C. and 90% relative air humidity, all the films of (a) and (b) being adhesively bonded together by means of the binder of (c) in the form of a cylindrical body, the wall of which has a spirally or convolutely wound structure, in which each film of (a) is separated both from the outside surface and from the inside surface of the cylindrical body by at least one film of (b) and at least one layer of (c), and containers comprising said cylindrical body and provided with top and bottom end closures at the opposite ends thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.