The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 22, 2020
Filed:
Mar. 24, 2016
Global Life Sciences Solutions Germany Gmbh, Dassel, DE;
Marcel Thieme, Dassel, DE;
Klaus Hochleitner, Dassel, DE;
Suzana Kiel, Dassel, DE;
Alexander Schenk, Dassel, DE;
Wolfgang Thamm, Dassel, DE;
Daniela Katarzynski, Dassel, DE;
Georg Peter Danisch, Dassel, DE;
Global Life Sciences Solutions Germany GmbH, Dassel, DE;
Abstract
Disclosed is a method and apparatus for manufacturing a continuous web of polymeric membrane and for continuous downstream processing of said web. The apparatus () comprises: a casting station () for casting the continuous web (M); a carrier () for carrying the web downstream; a membrane drier () downstream of the carrier, for drying the web; and a brushing station () downstream of the drier for brushing the web. Said drier is located immediately downstream of the carrier, and upstream of said brushing station. The apparatus () further includes an additional drying station () downstream of the brushing station (). Brushing after drying retains more surfactant in the membrane which is useful for certain applications. In addition, initial drying eliminates virtually all solvents from the membrane, but leaves some non-solvent (e.g. water) within it, which in turn fixes the surfactant on the nitrocellulose fibers, which improves significantly the consistency and reproducibility of the membrane.