Classifications

• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
  • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
  • D01D4/00—Spinnerette packs; Cleaning thereof
  • D01D4/08—Supporting spinnerettes or other parts of spinnerette packs
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
  • D01D5/00—Formation of filaments, threads, or the like
  • D01D5/06—Wet spinning methods

Definitions

• not less than 0.3 liter of gas per extruded gram spinning solution should be aspirated from a single filament space, but preferably at least 0.5 to 0.9, more preferably at least 0.9 to 1; 8 liters per extruded gram spinning solution.
• the amount of air aspirated should be at least 2 liters per extruded gram spinning solution.
• FIG. 1 shows a first embodiment in a schematic perspective view
• FIG. 1 shows a schematic perspective view of a device 1 for extruding spun filaments from a spinning solution containing cellulose, water and tertiary amine oxide, N-methylmorpholine-N-oxide being used as the tertiary amine oxide.
• the spinning solution is, as shown schematically by the arrow 2, fed via a heated pipe system 3 a first spinner head 4 and a second spinner head 5 arranged next to the first spinner head 4.
• the first spinner head 4 is provided with a first spinneret 6 and the second spinner head 5 with a second spinneret 7.
• the spun filaments 9 pass through a precipitation bath 13 which contains a precipitation bath liquid, essentially a non-solvent for the cellulose, water and tertiary amine oxide solution system, as well as other components flushed from the spun filaments 9 and impregnating additives for the spun filaments.
• the precipitation bath 13 is received in a Seallbad variouser 14 and forms a Desillbadober Structure 15 in operation, which is located at a predetermined distance from the extrusion openings 8.
• the spinning-film dreams 11, 12 end at the precipitation bath surface 15.
• two deflection means 19a, 19b are further arranged, which are each associated with one of the two spinnerets 6, 7.
• the deflection means 19a, 19b are adjustable in height to facilitate piecing.
• a deflecting device 19a, 19b may be assigned a spinning filament space or a plurality of spider film dreams.
• the deflection means 19a, 19b are below the corresponding Spinndü- se 6.7 arranged that the spider filament share a spinneret 6, 7 immersed symmetrically in the precipitation bath.
• the withdrawal of the spinning filaments takes place in FIG. 1 in each case on both sides of the precipitation bath container 14, as indicated by the arrows P.
• a fan device in the form of a suction device 21 is arranged, which has at least one suction opening 22.
• two sets of suction openings 22, 23 may be provided, which are each associated with a spinning filament space 11, 12 and preferably aligned therewith.
• an exhaust air line 24 is provided which removes the air 25 extracted from the region 20.
• the exhaust air line 24 may in particular be connected to a pump or suction fan, not shown in FIG.
• the section of the suction device 21 lying between the first spinning filament chamber 11 and the second spinning filament chamber 12 can be designed as a pipeline, in the wall of which the suction openings 22, 23 are located. In its lower part, the suction device 21 dips into the precipitation bath 13.
• the extracted air volume can also be between 0.9 and 1.8 liters per extruder.
• the exemplary embodiment of FIG. 2 initially differs from the first exemplary embodiment in that two blower devices in the form of blower devices 25, 26 are provided which each supply a gas stream 27 to one of the blower nozzles Spinnenfilamentsammlung 11, 12 judge.
• the gas stream 27 has a temperature which is considerably lower than the temperature of the spinning filaments 9.
• the gas stream 26 is inclined relative to the horizontal 27 by an angle ⁇ down.
• the gas stream 29 can be guided stably through the spinning filament stream 11.
• the second blowing device 26 generates, analogously to the first blowing device 25 in the second spinning filament chamber 12, a gas flow 30 corresponding to the gas flow 29 of the first spinning filament.
• One or more suction openings 23 oppose the second blowing device 26 in the direction of the gas flow 30 in order to selectively control the gas flow generated there suck.
• suction openings 22, 23 or in addition to these suction openings 31 and a single suction opening 31 may be provided, which is directed into the area between the two spider film dreams 11, 12 and sucks air from this area and so secondary flows in the area 20 due to the moving spinning filaments 9 prevented.
• the system can be extended by further spinnerets, as shown by way of example in FIG.
• a third spinner head 32 with a third spinneret 33, to which a third Spinnfilamentraum 34 connects provided.
• the second blowing device 26 is arranged in the region 35 and provided with a further blowing outlet, which, with respect to the horizontal 28 inclined downwards by an angle ⁇ , is directed to the third spinning filament space 34 and there a cooling gas flow 36 corresponding to the flows 29, 30 generated.
• a further suction device 21 is arranged, which sucks the flow generated by the second blowing device in the third spinning filament space 34.
• the design of this suction device substantially corresponds to the configuration of the suction device in the region 20, except that the openings 23, 31 are not necessary, since there is no spinning filament space on this side of the suction device.
• deflecting means 19a, 19b and 19c are arranged in the precipitation bath 13, which deflect the spinning filaments 9 out of the spinnerets 6, 7, 33 as a substantially flat filament curtain to the outside of the precipitation bath 13 and, as indicated by arrow 38 is indicated to perform further processing steps 37.
• the deflection means are arranged so that the center axis of the spider filament from the spinnerets 6, 7 points vertically into the precipitation bath 13 and the spider filaments 9 dive symmetrically into the precipitation bath 13.
• the area of the suction device 21 submerged in the precipitation bath 13 dips into the precipitation bath surface 15 at an acute angle, so that waves on the precipitation bath surface are not reflected.
• FIG. 3 shows a third exemplary embodiment of the invention in a schematic side view, wherein in the following only the differences from the second exemplary embodiment of FIG. 2 will be discussed.
• the same reference numerals will be used in the following.
• the embodiment of Figure 3 shows the embodiment of Figure 2, which is extended by a larger number of other spinning heads, which are schematically indicated in Figure 3 by the reference numeral 38.
• a spinneret field is formed, in which the spinnerets are arranged side by side in several rows.
• the device 1 of Figure 3 has an even number of spinnerets.
• the spinneret 39 located at the end of the spinneret field opposite the first spinneret 4 is hereinafter referred to as the fourth spinneret, because regardless of the number of spinneret 38 located between the fourth spinneret 39 and the third spinneret 33, the same point-like structure always results.
• the fourth spinneret 39 is assigned a fourth spinning filament space 40, which extends in the extrusion direction from the extrusion openings (not shown in FIG. 3) of the fourth spinneret 39.
• the fourth spinning filament space 40 ends at the precipitation bath surface 15.
• any desired number of spinnerets can be arranged side by side with the structure according to the invention, wherein in the areas between the spinneret dreams, in each case, fan devices, namely alternately a blowing device 25 and a suction device 21, are arranged.
• the blowing means 26 arranged between two adjacent spinning-film spaces thereby generate two separate gas-flow streams which are respectively directed towards the two adjacent spinning-film dreams.
• a directional and stable flow of each spinning filament space is made possible.
• the suction device 21 does not have to dip into the precipitation bath 13, if other means for flow calming and surface calming are already provided in the precipitation bath.
• the blowing devices 25, 26 can also protrude into the precipitation bath and thus contribute to the calming of the precipitation bath surface.
• the same advantageous design options apply to the blowing devices 26 arranged between two adjacent spinning film spaces as for the suction device 21.
• the blowing device 26 extends over at least one third of the height of its associated region between two adjacent spun-film dreams and, in a further embodiment, over at least half the width of this area, flows in the area can be effectively suppressed.
• surface waves on the surface 15 can be broken or swallowed by corresponding shaping.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Priority Applications (1)

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Publications (1)

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Family Applications (1)

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Citations (2)

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• 2005
  • 2005-08-23 DE DE200510040000 patent/DE102005040000B4/de not_active Expired - Fee Related
• 2006
  • 2006-08-16 TW TW95130167A patent/TWI330674B/zh active
  • 2006-08-23 CN CN2006800385864A patent/CN101292063B/zh active Active
  • 2006-08-23 KR KR20087007123A patent/KR100995296B1/ko active IP Right Grant
  • 2006-08-23 WO PCT/EP2006/008418 patent/WO2007023003A1/de active Application Filing
• 2008
  • 2008-03-10 ZA ZA200802268A patent/ZA200802268B/xx unknown

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