Method for extruding a continuous moulded body

A technology of forming body and extrusion channel, applied in the field of additives or adding additives in organic or inorganic form, can solve problems such as the inability to realize continuous forming body, and achieve improved physical properties of weaving, physical properties of weaving, and mechanical properties. Effect

Inactive Publication Date: 2006-12-27
LENZING AG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] A disadvantage of the production of continuous shaped bodies by the methods known from the prior art is that effective influencing measures for the properties of the continuous shaped body, in particular their tendency to fibrillation and the interlocking strength, cannot be achieved

Method used

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  • Method for extruding a continuous moulded body
  • Method for extruding a continuous moulded body

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Embodiment Construction

[0055] First, the sequence of the method according to the invention is described with the aid of FIG. 1 .

[0056] Squeeze solution 2 is prepared in reaction vessel 1 . The extrusion solution contains cellulose, water and a tertiary amine oxide, such as N-methylmorpholine-N-oxide (NMMO), and if necessary a stabilizer for thermal stabilization of the cellulose and solution. Stabilizers can be, for example: propyl gallate (Propylgallat), media or mixtures which have an alkalizing effect on each other. It may also contain other additives if necessary, such as titanium dioxide, barium sulfate, graphite, carboxymethyl cellulose, polyethylene glycol, chitin, chitosan, alginic acid, polysaccharides, pigments, chemical agents with bactericidal effect , Flame retardants containing phosphorus, halogens or nitrogen, activated carbon, carbon black or conductive carbon black, silicic acid and organic solvents as diluents, etc.

[0057] The extrusion solution 2 is conveyed through a pipe ...

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Abstract

The present invention relates to a method for producing a continuously molded body from an extrusion solution preferably containing water, cellulose and a tertiary amine. The extrusion solution is extruded through an extrusion duct orifice to obtain a continuously molded body. The continuously molded body is passed through an air gap in which it is stretched. To increase the loop strength and to reduce the tendency to fibrillate, the mean acceleration and/or the mean heat flow density are controlled according to the invention in accordance with predetermined formulae.

Description

technical field [0001] The present invention relates to a method for extruding continuous shaped bodies from an extrusion solution, in particular an extrusion solution containing the following components: cellulose, water and tertiary amine oxides, and additives or increases for stabilizing the spinning solution Additives in organic or inorganic form, wherein the method comprises the steps of: [0002] - conducting extrusion solution to the extrusion channel opening through an extrusion channel having a given length and a given diameter; [0003] - extruding the extrusion solution through the opening of the extrusion channel to form an extruded continuous shaped body; [0004] - derivation of a continuous shaped body through an air gap of a given air gap height; [0005] - Acceleration of the continuous shaped body in the air gap. [0006] The continuous molded article produced by the above method may have a thread shape, a monofilament shape or a film shape. In the case o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/06D01D5/098D01F2/00B29C43/22B29C48/05B29C48/08B29C55/00B29D7/01
CPCB29C43/22D01F2/00B29C47/8895D01D5/06B29D7/01B29K2001/00B29C55/00B29C47/0014B29C47/0021B29C48/05B29C48/08B29C48/919D01D5/04
Inventor 斯特凡·齐克利弗里德里希·埃克
Owner LENZING AG
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