公开(公告)号：US20240352626A1

公开(公告)日：2024-10-24

申请号：US18694402

申请日：2022-07-22

Applicant: LENZING AKTIENGESELLSCHAFT

Inventor： Peter DOBSON ,  Sigrid REDLINGER

IPC: D01F2/02 ,  D01D1/02 ,  D01D5/06 ,  D01D10/02 ,  D01F11/02

CPC classification number: D01F2/02 ,  D01D1/02 ,  D01D5/06 ,  D01D10/02 ,  D01F11/02 ,  D10B2201/22

Abstract: A method and processing facility for producing regenerated cellulosic fibers includes extruding a spinning solution into a coagulation bath which contains a salt and preferably an alkali to produce the fibers. The spinning solution may include cellulose dissolved in an aqueous solvent comprising NaOH and ZnO. The coagulation bath may have a pH-value of at least seven. The method may also include a continuous process of applying to the fibers in a never-dried state a crosslinking agent with two or more reactive groups and heating the fibers to a curing temperature while maintaining the never-dried condition to produce a reaction between the crosslinking agent and the cellulose of the fiber.

公开(公告)号：US20250122645A1

公开(公告)日：2025-04-17

申请号：US18688609

申请日：2022-08-31

Applicant: Lenzing Aktiengesellschaft

Inventor： Thomas RÖDER ,  Fritz SUCHOMEL ,  Sigrid REDLINGER

IPC: D01D1/02 ,  D01D5/06 ,  D01F2/02

Abstract: A method for preparing a cooled spinning solution suitable for forming a regenerated cellulosic shaped body by extrusion into a coagulation bath. The method comprises at least one conditioning step during which the spinning solution is distributed over a cooled surface by at least one distributing blade.