Patent · US Expired

Non-PVC multilayer film for medical bags

US5783269A · kind A · utility

48Cited by

2References

19Claims

0Family size

Assignee

Fresenius AG · DE

Inventors

Klaus Heilmann · Sankt Wendel, DE
Thomas Nicola · Ingelheim am Rhein, DE
Thomas Kreischer · Waiblingen, DE

Key dates

Filing date	Apr 26, 1996
Grant date	Jul 21, 1998
Priority date	—
Expiry date	Apr 26, 2016

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31931
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

Non-PVC multi-layer film (1) containing an outer layer (2), a supporting layer (4) together with at least one interposed central layer (3), characterized in that the outer (2) and supporting (4) layers contain polymers having Vicat softening temperatures of above approximately 121.degree. C. and that at least one central layer (3) contains polymers having softening temperatures of below approximately 70.degree. C. The non-PVC multi-layer film (1) is particularly suitable for the production of medical bags, in particular multi-chamber bags, as the materials of the individual layers (2-4) are selected in such a manner that the film is transparent and flexible, but in particular also heat-sterilizable, fusible and heat sealable. The film is moreover completely recyclable.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.