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US 2023/0294366 A1Published application
Pulse welding method and welding tool for pulse welding for a medical pack formed as a bag
AssigneeFresenius Kabi Deutschland GmbH
InventorsGerald Wegner, Jom Wittorf
Life of this patent
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Abstract
The invention relates to a welding tool and a method for pulse welding films of plastic for medical packs formed as bags. The invention generally provides for the film material that has been plastified during welding, and is consequently free-flowing, to be specifically displaced by increasing the sealing surface area. The displaced film material can for instance compensate for dimensional and form tolerances. At the same time, however, the strength of the welded seam region, which adjoins the interior space of the bag, is not reduced.
Claims20
A medical bag, comprising:
- a plurality of films welded to one another along at least one weld seam, the at least one weld seam having a peripheral inner region, a thinned-out region adjacent the peripheral inner region, and a peripheral outer region adjacent the thinned-out region, and a thickness of the thinned-out region being less than a thickness of the peripheral inner region and a thickness of the peripheral outer region.
A medical bag, comprising:
- a plurality of films welded to one another along at least one weld seam, the at least one weld seam having a peripheral inner region, a thinned-out region adjacent the peripheral inner region, and a peripheral outer region adjacent the thinned-out region, and a thickness of the thinned-out region being less than a thickness of the peripheral inner region and a thickness of the peripheral outer region;
- and
- a port welded into the at least one weld seam.
Dependencies are inferred from the claim text.