| abstract |
A seamless cellulose-based film tube is produced by extruding an aqueous N-methylmorpholine-N-oxide (NMMO) spinning solution through an annular die. The film tube contains at least one protein, at least one filler and optionally a stabilizer. The film tube passes through a spinning bath 3, in which it is deflected, and after it emerges from the spinning bath, a washing device 25, 26, a plasticizing device 27 and a drying device 28. |