Method for producing regenerated cellulosic fibers

A processing facility for producing regenerated cellulosic fibers including a spinneret for extruding a spinning solution into a coagulation bath which contains a salt and preferably an alkali to produce a fiber tow, the spinning solution comprising cellulose dissolved in an aqueous solvent comprising NaOH and ZnO, the coagulation bath having a pH-value of at least seven, the processing facility comprising:

• at least one stretching device configured to stretch the fibers in the fiber tow to a final cellulose specific diameter and orient cellulose in the fibers to a final state;
• and
• a cutter for cutting the fibers to staple fibers in an undried state.

A regenerated cellulosic fiber, produced in a processing facility for producing regenerated cellulosic fibers including a spinneret for extruding a spinning solution into a coagulation bath which contains a salt and preferably an alkali to produce a fiber tow, the spinning solution comprising cellulose dissolved in an aqueous solvent comprising NaOH and ZnO, the coagulation bath having a pH-value of at least seven, the processing facility further comprising at least one stretching device configured to stretch the fibers in the fiber tow to a final cellulose specific diameter and orient cellulose in the fibers to a final state;

• and a cutter for cutting the fibers to staple fibers in an undried state.

A product comprising a regenerated cellulosic fiber a processing facility for producing regenerated cellulosic fibers including a spinneret for extruding a spinning solution into a coagulation bath which contains a salt and preferably an alkali to produce a fiber tow, the spinning solution comprising cellulose dissolved in an aqueous solvent comprising NaOH and ZnO, the coagulation bath having a pH-value of at least seven, th processing facility further comprising at least one stretching device configured to stretch the fibers in the fiber tow to a final cellulose specific and orient cellulose in the fibers to a final state, and a cutter for cutting the fibers to staple fibers in an undried state.

A regenerated cellulosic fiber, produced by a method for producing regenerated cellulosic fibers including extruding a spinning solution into a coagulation bath which contains a salt and preferably an alkali to produce a fiber tow, the spinning solution comprising cellulose dissolved in an aqueous solvent comprising NaOH and ZnO, the coagulation bath having a pH-value of at least seven, the method comprising the steps of stretching the fibers in the fiber tow to a final cellulose specific diameter before being cut to staple fibers in an undried state;

• and orienting the fibers in the fiber tow to a final state before being cut to staple fibers in an undried state.

A product comprising a regenerated cellulosic fiber, produced by a method for producing regenerated cellulosic fibers including extruding a spinning solution into a coagulation bath which contains a salt and preferably an alkali to produce a fiber tow, the spinning solution comprising cellulose dissolved in an aqueous solvent comprising NaOH and ZnO, the coagulation bath having a pH-value of at least seven, the method comprising the steps of stretching the fibers in the fiber tow to a final cellulose specific diameter before being cut to staple fibers in an undried state;

• and orienting the fibers in the fiber tow to a final state before being cut to staple fibers in an undried state.