Medical containers
US6713137B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1999 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Nov 23, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to a flexible polyolefin multilayered film for preparation of medical containers by self sealing, comprising at least a first outer layer and a second layer, each of the layers consisting essentially only of one or more polypropylene based polymers selected from the group consisting of polypropylene homopolymers, polypropylene copolymers having randomly distribute ethylene units and mixtures of said homopolymers and said copolymers, wherein said second layer has a melting point in the range between 120° C. and 150°, said first outer layer has a lower flexibility and a higher melting point than said second layer, and said second comprises a polypropylene polyethylene copolymer with a higher amount of ethylene units than said outer layer. The present invention also relates to medical containers made of or comprising the above film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.