Patent · US Expired

Multilayer polymer film for a multichamber medical bag and process for fabrication thereof

US6017598A · kind A · utility

99Cited by

3References

14Claims

0Family size

Assignee

Fresenius AG · DE

Inventors

Thomas Kreischer · Waiblingen, DE
Klaus Heilmann · Sankt Wendel, DE
Thomas Nicola · Ingelheim am Rhein, DE
Michael Zimmermann · Brig, CH

Key dates

Filing date	May 28, 1996
Grant date	Jan 25, 2000
Priority date	—
Expiry date	May 28, 2016

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31913
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention concerns a multilayer polymer film and a multichamber bag, whose bag chambers are formed by seams in the outer border zone and by at least one seam in the chamber separation zone, whereby the seams are formed from the polymer materials facing the chambers. The polymer materials facing the chambers are inseparably sealed together in the outer border zone and sealed together in the chamber separation zone such that the seam is separable with a force which lies in the range from 5 to 20 N. The different strength of the bond from the sealing process is obtained by varying sealing temperatures.

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