Container with heat seal surface having a substantially planar portion
US6234386A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1999 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Oct 11, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2577/205
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A sealed composite container is provided, the container including a tubular body member comprising at least one paperboard body ply. The container further comprises a liner ply adhered to the inner surface of the tubular body member, the liner ply comprising a barrier layer. At least one end of the body member and liner ply are rolled outwardly to form a rim and expose the liner ply. The rim defines a heat seal surface having a substantially planar portion. A lid is operatively positioned adjacent to the rim and heat sealed thereto, the lid also comprising a barrier layer. At least one of the lid and liner ply further comprise a seal layer comprising a heat sealable composition, the seal layer forming a heat seal between the lid and the liner ply having a substantially planar portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.