Method and device for extruding a continuous moulded body

Details Method and device for extruding a continuous moulded body Method and device for extruding a continuous moulded body

2007-12-04

2007-12-04

Huson, Monica A (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

C264S040700, C264S172160, C425S113000, C425S131100

Reexamination Certificate

active

10343547

ABSTRACT:
The present invention relates to an apparatus and a method as well as a system for extruding continuously molded bodies for producing filaments or staple fibers from an extrusion solution, such as a cellulose solution containing water, cellulose and tertiary amine oxide such as N-methylmorpholine N-oxide. In comparison with the methods known from the prior art, profitability can be increased in the production of continuously molded bodies (3) if the extrusion rate v is set to a value v=B·T0.33·10,000·(1/r2). In a system, profitability can be enhanced if the number r of rows is r=[(B/v)·10,000·T0.33]1/2. T is here the fiber titer in T dtex, v the extrusion rate in m/min, r the number of the rows of extrusion duct orifices (12), and B an operational parameter which is not more than 4 and at least 0.5.

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