Multi-Layered freezer storage bag
US6371643B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 2, 1999 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Jun 2, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2170/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a freezer bag comprising a multi-layered bag having at least one liner film and an outer support bag. The liner film(s) have a first sidewall and a second sidewall attached along respective lateral edges forming edge seals, each sidewall having a top edge, the outer support bag having two sidewalls attached together along respective lateral edges forming edge seals, each sidewall having top edges defining the opening to the multi-layered bag and the support bag having a folded edge defining the bottom of the multi-layered bag, the top edge of at least one liner film being attached to an inner surface of the respective sidewall of the support bag wherein the liner film(s) are thermoplastic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.