Composite container having detachable liner and method for making container
US6675971B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 15, 2002 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Oct 15, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D3/22
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A composite container having a detachable liner and a method for making the container are provided according to the present invention. The method includes providing a tubular body ply formed of a paperboard material and adhering the liner ply using a standard adhesive applicator. The method also includes heating a heat-releasable adhesive disposed between the liner ply and the body ply such that the liner ply substantially releases from the body ply. The liner ply remains adhered to the opposed ends of the container, thus providing a free medial portion between the opposed ends that can move inwardly if a negative pressure is created within the sealed container, thus equalizing the pressure within the container with that outside the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.