Weigel, P.P.WeigelFink, H.P.H.P.FinkFrigge, K.K.FriggeSchwarz, W.W.Schwarz2022-03-082022-03-082001https://publica.fraunhofer.de/handle/publica/304889The invention relates to a process for the production of oriented cellulose films by spinning amino oxides of dissolved cellulose in a precipitating bath, whereby the cellulose solution is extruded downwards into the precipitation bath via a film blow nozzle and an external air gap, and the application of said films.de608668patent1994-4421482