Beverage and food containers, inwardly directed foam
US7074466B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2002 |
| Grant date | Jul 11, 2006 |
| Priority date | — |
| Expiry date | Apr 1, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1376
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Beverage or food containers made from sheet material, and methods of making such containers. Such container comprises a layer of paperboard and an expanded foam layer applied as a coating in a liquid carrier, and affixed to a paperboard base layer. The expanded foam has a remote surface preferably defined by intermingled peaks and valleys. The sheet material can include a protective cover layer overlying the remote surface. Such cover layer can comprise paper, plastic film, or foamed thermoplastic. The sheet material can include a heat seal layer, with the heat seal layer overlying, and in surface-to-surface contact with, the foam layer such that the foam layer is between the paperboard and the heat seal layer. Preferred composition for the foam layer is PVDC or AMM.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.