Patent · US Active

Contour-forming welding tool for pulse welding and contour-forming pulse welding method for a medical pack formed as a bag

US11498284B2 · kind B2 · utility

0Cited by

1References

24Claims

0Family size

Assignee

Fresenius Kabi Deutschland GmbH · DE

Inventors

Joern Wittorf · Friedberg, DE
Gerald Wegner · Bad Nauheim, DE
Tobias Lenhardt · Friedberg, DE

Key dates

Filing date	Sep 24, 2019
Grant date	Nov 15, 2022
Priority date	—
Expiry date	Sep 24, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2031/7148
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a welding tool and to a method for pulse welding of plastic films for medical packs formed as bags. In general, the invention provides that the film material which is plastified during welding and thus free-flowing is specifically displaced into a deepened, edge-side inner region of the sealing surface by increasing the sealing surface area. The film material accumulated in the recess leads to an increase in the film thickness in the inner region (25i) of the weld seam (6, 7, 8). As a result, the mechanical stability of the medical pack formed as a bag can be improved.

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