Sterilizable flexible peel-seal pouch package
US5459978A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Mar 1, 1993 |
| Grant date | Oct 24, 1995 |
| Priority date | — |
| Expiry date | Mar 1, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2439/80
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A steam sterilizable pouch is disclosed. The pouch includes a non-woven steam-permeable bottom web. A multi-layer intermediate web is bonded to the bottom web. The multi-layer web is substantially steam impermeable, except for a perforated steam-permeable region. The intermediate web includes top and bottom layers. A steam-impermeable top web is bonded by a first line heat seal to the top layer of the intermediate web. A cavity having a heat sealable access opening is located between the top web and the top layer. At least a portion of the first line heat seal is peelable after steam sterilization of the pouch at 270.degree. F., the peel strength being from 3/4 to 5 pounds per inch. The bonding of the intermediate web to the bottom web is by a second line heat seal that is located peripherally outside of the perforated steam permeable region of the intermediate web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.