US3081490A - Spinning apparatus for the spinning of hollow filaments - Google Patents

Spinning apparatus for the spinning of hollow filaments Download PDF

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Publication number
US3081490A
US3081490A US773383A US77338358A US3081490A US 3081490 A US3081490 A US 3081490A US 773383 A US773383 A US 773383A US 77338358 A US77338358 A US 77338358A US 3081490 A US3081490 A US 3081490A
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Prior art keywords
spinning
plate
passage
bore
recess
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Expired - Lifetime
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US773383A
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English (en)
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Heynen Wilhelm
Martin Wilhelm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Glanzstoff AG
Vereinigte Glanzstoff Fabriken AG
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Glanzstoff AG
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    • 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
    • D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00—Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/217—Spinnerette forming conjugate, composite or hollow filaments

Definitions

  • nozzles useful for the production of hollow filaments is extraordinarily difiicult because the spinning openings have 'to be bored with extreme precision and the tolerances are very small in centering of the passage through which the gaseous agent is conducted.
  • a further difiiculty arises from the necessity of connecting the hollow passage with a gas feed line, on the one hand, and the feed passage for the molten' spin- .ning mass with a spinning mass feed line on the other hand plus creating passages inside the nozzle itself to provide uniform distribution of the molten spinning mass.
  • the majority of the known nozzles for the production of hollow threads consist of at least two plates, which are spaced apart by a gasket.
  • the hollow space between these plates forms the feed space for the spinning mass, while the supply of liquid or gaseous agents is accomplished in these nozzles from above.
  • In the upper plate are solidly anchored hollow tubes, which pass through the feed space for the spinning mass and through spinning openings in the lower plate.
  • these hollow passages may be equipped with a thickened shaft, or they may be solidly connected with the nozzle base plate at several points.
  • Nozzle designs in which there is no solid connection between the nozzle base plate and hollow tubes are, both from a production and also a cleaning viewpoint, more advantageous than nozzles in which a solid connection is used between hollow tubes and nozzle base plate.
  • the two plates can be produced in such a manner that capillaries are installed in prefinished openings of the upper plate. At the lower end, these capillaries are provided with thickened portions, which are used to center a capillary tube in each spinning bore. In the lower plate, the spinning openings are drilled, and the two plates are assembled so that a feed space for the molten spinning mass is formed between the inner wall of the spinning bore and the outer surface of the capillary tube. With the requisite small diameters of the nozzle bores, on the one hand, and of the capillaries forming the hollow passages, on the other hand, it is extremely difficult to assemble the two plates without accidental deformation of the capillary tubes.
  • the object of the present invention is to provide a spinning nozzle which can be manufactured much more simply and with greater precision than that of hollow filament nozzles described above.
  • the spinning nozzle is composed of two separate plates, which are joined by means of screws or equivalents thereof without the conventional hollow space between them.
  • One of these plates has feed passages for gaseous or fluid media and also for the spinning mass.
  • the latter are connected with a cylindrical feed manifold for the spinning mass, which is formed by a cylindrical recess in the plate.
  • the other plate contains the spinning openings, into each of which extends a centrally-disposed, hollow tubular member which terminates a capillary tube. This hollow tubular member is likewise produced separately.
  • packings of various thickness can be inserted. It is hereby possible to vary the position of the capillary in the spinning opening with respect to the surface of the nozzle base. For example, the capillary may project somewhat from the nozzle base or be retracted in accordance with the thickness of the packing.
  • FIG. 1 is aside elevation in diametric cross-section, taken along section 11 of FIG. 2, of one form of the invention
  • FIG. 2 is a top plan view of the embodiment of FIG. 1;
  • FIG. 3 is a partial cross-section view of the embodiment of FIG. 1 illustrating the guide pin structure used in assembling the nozzle plates of the instant invention
  • FIG. 4 is a cross-sectional view taken along section 4-4 of FIG. 2;
  • FIG. is an enlarged sectional view of a tubular member used in the embodiment of FIG. 1;
  • FIG. 6 is a cross-sectional view of a modified form of the tubular member shown in FIG. 5;
  • FIG. 7 is a cross-sectional view taken along section 77 of FIG. 6;
  • FIG. 8 is a diametric cross-sectional view of another embodiment of the invention wherein the spinning plate has a plurality of spinning orifices for the spinning of hollow filaments;
  • FIG. 9 is a top plan view of the embodiment of FIG. 8;
  • FIG. is a cross-sectional view taken along section 1010 of FIG. 9.
  • FIG. 11 is a partial, broken view of a spinning head showing in cross-section the mounting of a spinning nozzle containing the spinning plates of FIGS. l-4.
  • the spinning plate therein illustrated is made up of a discshaped base plate 1 and a similar disc-shaped second plate 2 mounted in face to face relationship with said base plate.
  • the plate 2 has a radial passage 3 for conducting a fluid, either gas or liquid, to a central bore 4 provided in the plate 2.
  • the plate 2 also has four passages 5, which are parallel with and disposed about the central bore 4.
  • the bore 4 and passages 5 communicate the outer face of the plate 2 with a cylindrically-shaped recess disposed centrally in the disc-shaped plate 2 at the face of the plate 2 opposite the plate 1.
  • the cylindrical recess 6 serves as a manifold for communicating the passages 5 with a central spinning orifice extending through the plate 1.
  • the spinning orifice 7 is composed of a relatively large cylindrical segment 7a and may, if desired, have a counter-sunk edge 7b at the face of the plate 1 opposite the plate 2.
  • the opposite end of the cylindrical portion 7a is tapered at 70 to a spinning opening 7d of the desired size.
  • the plates 1 and 2 are held in assembled relationship by means of screws 8, which threadably engage internally threaded holes 9 in the plate 2.
  • the screw heads 10 of screws 8 are preferably positioned within recesses 11 provided in the exterior face of the plate 1.
  • the plate 2 is provided with two or more guide pins 12, which will extend through correspondingly positioned guide holes 13 in plate 1. These guide pins facilitate proper alignment of the plates during the assembly operation and prevent accidental damage to the delicate capillary tubes hereinafter described.
  • an O-ring packing 14 is inserted between the plates to form a fluid-tight seal therebetween.
  • a preferred packing material is an aluminum gasket which, before compression, has a thickness of about 0.1 millimeter.
  • the assembly heretofore described constitutes that portion of the apparatus for conducting a spinnable polymer through the plates and out of the spinning opening 7d.
  • the portion of the apparatus for providing a fluid inside the filament as it is being spun is composed of a tubular insert designated generally by the numeral 15. This insert is shown in detail in FIG. 5.
  • the tubular insert 15 has an axial passage 16 which communicates with a centrally-disposed capillary tube 17 which protrudes from the end of the tubular insert 15.
  • a radial aperture extending through the wall of the tubular insert 15 also communicates with the axial passage 16 for the purpose of supplying a fluid, either a gas or liquid, to the axial passage 16 and thence to the capillary tube 17.
  • the end of the radial aperture 18 opposite the axial aperture 16 opens in an annular groove or recess 19, which is provided for a purpose later described.
  • the tubular insert 15 has intermediate the ends thereof an annular ring 20 with an upper contact shoulder 21.
  • the upper portion 23 of the tubular insert 15 has an internally-threaded bore 22 for threadedly engaging the threaded shank 24 of a screw.
  • FIG. 6 The embodiment of the tubular insert of FIG. 6 is similar to that shown in FIG. 5 and, for the sake of convenience, like numerals have been used to designate like parts.
  • the primary difference between the embodiment of FIGS. 5 and 6 is that the latter is provided with guide vanes 25 which, in end view, are in the shape of a cross. These guide vanes are adapted to contact the walls of the central bore 7 to properly guide the tubular insert with its fragile capillary tube 17 through the bore and to position the capillary tube 17 centrally in the spinning opening 7d.
  • the tubular inserts 15 are, thus, separate component parts which are removably mounted in the plates 1 and 2.
  • the mounting of the tubular inserts 15 is done by mounting the inserts in the plate 2 before the latter is assembled with plate 1. This mounting is carried out by removing the screw 24 from the insert 15 and fitting the upper portion 23 into the central bore 4 of the plate 2 from the side of the plate 2 containing the recess 6.
  • a packing member 27 To provide a fluid-tight fit between the tapered edges 26 of the central bore 4 and the shoulder 21 of the tubular insert 15, there may be provided a packing member 27.
  • the upper plate 2 After threading the screw 24 into the bore 22 of the tubular insert 15 and also providing a packing 28 between the upper tapered portion of the bore 4 and the bottom side of the screw 24, the upper plate 2 is then ready for assembly with the lower plate 1 in the manner previously described.
  • the packings 27 and 28 thus form a fluidtight chamber within the central bore 4.
  • the fluid, either gas or liquid, supplied to the passage 3 flows into the fluid-tight chamber in the central bore 4 and thereafter through passages 18 and 16 into the capillary tube 17.
  • the annular groove or recess 19 provides a free passage for the fluid, and it is, hence, unnecessary to be concerned with proper alignment between the passage 3 and the aperture 18.
  • the spinnable polymer flows from the upper face of the plate 2 through vertical passages 5 into the recess 6, from whence it flows into the spinning orifice 7 and thence out of the spinning opening 7d in the form of a filament.
  • the filament emerging from the opening 7d is solidified in air or other gaseous medium.
  • the filament emerges from the opening 7d into a coagulation or precipitation bath, which causes the spinnnig solution to coagulate or solidify.
  • a fluid is supplied through the capillary tube 17 into the center of the filament as it is being extruded. In the meltspinning processes this fluid is normally a gas and in wetspinning processes the fluid usually will be a liquid of similar or identical composition to the spinning bath.
  • the primary advantage of the assembly previously described -over known assemblies for performing the same function is the ease in manufacture of the individual parts, the ease of assembly thereof, and the precision attainable between the pants thereof-the most important being the relationship between the capillary tube 17 and the opening 7d. Furthermore, inasmuch as the tubular insert 15 can be easily removed from the plate 2, the cleaning of the apparatus and the reassembly thereof is considerably improved.
  • FIGS. 8-10 The embodiment of the invention illustrated in FIGS. 8-10 is similar to that of FIGS. 1-4-the primary difference being the provision in the spinning plate assembly of FIGS. 8-10 of a plurality of spinning orifices for simultaneously spinning a plurality of hollow filaments.
  • like numerals have been used to designate like parts and reference is made to previous description for explanation of these reference numerals.
  • the plate 2 has a tapered central bore 29. there is cut a ring bore 30.
  • the bore 29 are isolated from each other by inserting a tapered sleeve 31, made of metal, such as aluminum or of other suitable gasket material.
  • the plate 2 also has six vertical bores 32 disposed in circular fashion about the ce'ntal bore 29 with the edges of the bores 32 intercepting the ring bore 30.
  • the plate 2 has a radial bore 33 which communicates the outer edge of the plate 2 with the ring bore 30.
  • the plate 2 has on the face opposite plate 1 a central recess 34 of a diameter sufficiently large to provide communication with each of the bores 35 in the plate 1 when the two plates are assembled.
  • the spinning mass is fed through the sleeve 31 into the recess 34, which serves as a manifold for distributing the spinning mass to each of the spinning bores 35 in the plate 1.
  • the fluid discharged into the center of the spinning mass through capillary tubes 17 is supplied through passage 33 into the ring bore 30 and thence into each of the bores 32 in the plate 2.
  • the fluid medium then passes through the tubular inserts 15 and out of the capillary tubes 17 in the manner previously described with respect to FIGS. 14.
  • FIG. 11 illustrates the mounting of the spinning plates in a spinning nozzle, which nozzle, in turn, is mounted in a spinning head.
  • the spinning head 52 (only a segment being shown) has a cylindrical bore 53 into which is press fitted a spinning nozzle 45.
  • Inside the spinning nozzle 45 there is provided a holder 36 for holding the plates 1 and 2 in the spinning nozzle.
  • the holder 36 has a central bore comprising a cylindrical portion 36a, a tapered portion 36b and a cylindrical portion 36c.
  • At the end of the cylindrical portion 36c there is an inwardlyturned flange 37 which bears against the plate 1.
  • Abutting against the plate 2 is an aluminum ring 38, which holds the filter member 39the latter functioning to screen out any particles which would block the small passages in the spinning apparatus.
  • the filter 39 is spaced from the plate 2 to provide a feed space 40. Also within the holder 36 is a washer-like plate 41 of generally cylindrical shape with a tapered portion corresponding to the taper at 36b. The plate 41 has a spinning mass feed passage 42 extending therethrough. O-ring packings 43 and 44 are provided to seal the spinning apparatus against flow of the spinning mass to undesired areas.
  • the holder 36 and its contained parts are held within the recess of the spinning nozzle 45 by means of a cylindrical sleeve 54, which has an inwardly-turned flange 55.
  • the sleeve 54 is externally-threaded for threaded engagement with internal threads provided on the cylindrical walls of the recess in the spinning nozzle 45.
  • the rear face of the nozzle 45 has a passage 47 through which the spinning mass supplied under pressure to the spinning head passes for subsequent passage through the parts of the spinning nozzle from which it eventually emerges as a filament.
  • the holder 36 has in the cylindrical portion 36c an annular groove 49.
  • the groove 49 is positioned to correspond with the position of the passage 3 in the plate 2.
  • the nozzles of the instant invention are made of parts which can be machined relatively easily.
  • the hollow inserts because they are produced separately, can be produced with the necessary precision.
  • the invention herein described is also advantageous inasmuch as the spinning nozzles can be taken apart, cleaned and reassembled with out difliculty and, if need be, the tubular inserts can be changed without replacing other parts of the apparatus.
  • a spinning nozzle for spinning hollow filaments comprising a first plate and a second plate mounted in face to face relationship with each other, a recess in the face of one of said plates contiguous to the other of said plates, a cylindrical passage in said second plate communicating with said recess and terminating in a spinning orifice at the outer surface of said second plate, said first plate having a bore extending from the outer face thereof to said recess, said bore being aligned with said passage in said second plate, a tubular insert having a ring-shaped portion intermediate the ends thereof extending through said bore and into said passage, the ringshaped portion forming a shoulder in contact with the face of the recess about said bore, said tubular insert having a radial aperture through the wall thereof and ending in a capillary tube centrally disposed in said spinning orifice, a passage for supplying a spinning mass through said first plate to said recess, and passage means in said first plate for supplying a fluid to said tubular insert through said radial aperture in the latter.
  • a spinning nozzle comprising a first plate and a second plate mounted in face to face relationship, a recess in the face of one of said plates contiguous to the other of said plates, said first plate having a bore communicating the outer surface of said plate and said recess, the side wall of said bore having a continuous groove therein, a sleeve tightly fitted in said bore for dividing the groove and the bore into separate fluid conducting passages, said first plate having a radial passage communicating said groove and a side wall of said first plate, said second plate having a plurality of spinning passages terminating in spinning orifices at the outer surface of the second plate, said passages communicating with said recess, a plurality of bores extending through said first plate from the outer surface thereof to said recess and also intercepting said groove, each of said passages being aligned with one of said passages in said second plate, tubular inserts being removably mounted in each of said lastmentioned bores in said first plate, each of said inserts having a passage communicating
  • a spinning nozzle for the spinning of hollow filaments comprising a first plate and a second plate mounted in face to face relationship with each other, a recess in the face of one of said plates contiguous to the other of said plates, a cylindrical passage extending through said second plate, said passage communicating at one end with said recess and terminating at the other end in a spinning orifice of a diameter less than the diameter of said passage, an insert removably mounted in said first plate, said insert having a tubular section of smaller diameter than the diameter of said passage and substantially concentrically located in said passage, said tubular section terminating in an end wall with an aperture therethrough, said aperture having fixedly mounted therein a thin-walled, cylindrical, capillary tube of a diameter less than the diameter of said spinning orifice and extending into said spinning orifice in substantially concentric relation therewith, said first plate containing a passage for supplying a spinning mass through said first plate to said recess, and communicating passage means 'in said first plate and said tubular insert for supplying

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US773383A 1957-11-16 1958-11-12 Spinning apparatus for the spinning of hollow filaments Expired - Lifetime US3081490A (en)

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BE (1) BE571497A (US20020095090A1-20020718-M00002.png)
CH (1) CH367270A (US20020095090A1-20020718-M00002.png)
FR (1) FR1203372A (US20020095090A1-20020718-M00002.png)
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Cited By (39)

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US3197812A (en) * 1962-04-30 1965-08-03 Dietzsch Hans-Joachim Spinning head with plural nozzles
US3244785A (en) * 1962-12-31 1966-04-05 Du Pont Process for producing a composite sheath-core filament
US3397427A (en) * 1966-09-27 1968-08-20 Du Pont Sealed vented insert spinneret
US3439382A (en) * 1966-01-04 1969-04-22 American Enka Corp Spinneret assembly for spinning highly viscous polymeric substances
US3540080A (en) * 1966-09-21 1970-11-17 Inventa Ag Device for the spinning of multicomponent synthetic fibers
US3659983A (en) * 1969-02-19 1972-05-02 Dow Chemical Co Spinnerette for the production of hollow fibers
US3888610A (en) * 1973-08-24 1975-06-10 Rothmans Of Pall Mall Formation of polymeric fibres
US4229154A (en) * 1979-04-04 1980-10-21 E. I. Du Pont De Nemours And Company Spinneret for the production of hollow filaments
US4321025A (en) * 1980-05-12 1982-03-23 Corning Glass Works Extrusion die
US4346053A (en) * 1979-02-21 1982-08-24 American Cyanamid Company Process for melt-spinning hollow fibers
US5046936A (en) * 1988-12-22 1991-09-10 Societe Lyonnaise Des Eaux, S.A. Draw plate for the production of membranes of an organic material
US5256050A (en) * 1989-12-21 1993-10-26 Hoechst Celanese Corporation Method and apparatus for spinning bicomponent filaments and products produced therefrom
US5480598A (en) * 1991-05-21 1996-01-02 Brown Univ. Research Foundation Process of and apparatus for making hollow fibers
US6413071B1 (en) * 2000-03-27 2002-07-02 Basf Corporation Thin plate spinnerette assembly
WO2002066715A1 (en) * 2000-12-08 2002-08-29 L'air Liquide Societe Anonyme A Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Spinnerette assembly for forming hollow fibers
US20050031721A1 (en) * 2000-12-08 2005-02-10 Moore Samuel Earl Spinnerette assembly for forming hollow fibers
US20060135021A1 (en) * 2004-12-20 2006-06-22 Calhoun Patricia H Multicomponent fiber including elastic elements
US20080268082A1 (en) * 2002-03-13 2008-10-30 Fresenius Medical Care Deutschland Gmbh Hollow-fiber spinning nozzle
US20090011182A1 (en) * 2003-12-12 2009-01-08 Cambridge University Technical Services Limited Extrudate Having Capillary Channels
US20090092809A1 (en) * 2005-01-06 2009-04-09 Buckeye Technologies Inc. High Strength And High Elongation Wipe
EP2463425A1 (en) 2010-12-08 2012-06-13 Buckeye Technologies Inc. Dispersible nonwoven wipe material
WO2015073917A1 (en) 2013-11-15 2015-05-21 Buckeye Technologies Inc. Dispersible nonwoven wipe material
WO2017123734A1 (en) 2016-01-12 2017-07-20 Georgia-Pacific Consumer Products Lp Nonwoven cleaning substrate
WO2018132688A1 (en) 2017-01-12 2018-07-19 Georgia-Pacific Nonwovens LLC Nonwoven material for cleaning and sanitizing surfaces
WO2018132684A1 (en) 2017-01-12 2018-07-19 Georgia-Pacific Nonwovens LLC Nonwoven material for cleaning and sanitizing surfaces
WO2018132692A1 (en) 2017-01-12 2018-07-19 Georgia-Pacific Nonwovens LLC Nonwoven material for cleaning and sanitizing surfaces
WO2018187192A1 (en) 2017-04-03 2018-10-11 Georgia-Pacific Nonwovens LLC Multi-layer unitary absorbent structures
WO2019067432A1 (en) 2017-09-27 2019-04-04 Georgia-Pacific Nonwovens LLC NON-WOVEN TWO-COMPONENT FIBER MATERIAL WITH HIGH CORE
WO2019067487A1 (en) 2017-09-27 2019-04-04 Georgia-Pacific Nonwovens LLC NON-WOVEN AIR FILTRATION MEDIA
WO2019152638A1 (en) 2018-01-31 2019-08-08 Georgia-Pacific Nonwovens LLC Modified cellulose-based natural binder for nonwoven fabrics
WO2019178111A1 (en) 2018-03-12 2019-09-19 Georgia-Pacific Nonwovens LLC Nonwoven material with high core bicomponent fibers
WO2020061290A1 (en) 2018-09-19 2020-03-26 Georgia-Pacific Nonwovens LLC Unitary nonwoven material
WO2020068151A1 (en) 2018-09-26 2020-04-02 Georgia-Pacific Nonwovens LLC Latex-free and formaldehyde-free nonwoven fabrics
WO2020240476A1 (en) 2019-05-30 2020-12-03 Georgia-Pacific Nonwovens LLC Low-runoff airlaid nonwoven materials
WO2021024200A1 (en) 2019-08-08 2021-02-11 Georgia-Pacific Nonwovens LLC Low-dust airlaid nonwoven materials
WO2021024199A1 (en) 2019-08-08 2021-02-11 Georgia-Pacific Nonwovens LLC Dispersible nonwoven materials including cmc-based binders
WO2021053588A1 (en) 2019-09-18 2021-03-25 Georgia-Pacific Mt. Holly Llc Absorbent nonwoven materials
EP3842132A1 (en) * 2019-12-23 2021-06-30 Gambro Lundia AB Spinneret
EP3943181A1 (en) 2020-07-22 2022-01-26 Gambro Lundia AB Spinning beam

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NL125155C (US20020095090A1-20020718-M00002.png) * 1962-06-25

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FR53124E (fr) * 1940-08-30 1945-09-19 Degussa Tuyère de filage pour la fabrication de fils artificiels creux, et procédé pour la fabrication de ces tuyères
US2690595A (en) * 1951-06-22 1954-10-05 Davol Rubber Co Manufacture of low-pressure inflation catheters
US2703434A (en) * 1951-08-02 1955-03-08 British Celanese Extrusion
US2808617A (en) * 1952-09-05 1957-10-08 Terracini Vittorio Means for molding lengthy articles made from multi-colored plastic material
FR1153265A (fr) * 1955-03-08 1958-03-04 Schiesser Ag Trikotfabriken Corps d'ajutages de filage à trous multiples et son procédé de fabrication
US2861319A (en) * 1956-12-21 1958-11-25 Du Pont Intermittent core filaments
US2931091A (en) * 1954-02-26 1960-04-05 Du Pont Crimped textile filament
US2932079A (en) * 1956-03-08 1960-04-12 Schiesser Ag Trikotfabriken Complex artificial filaments
US2999296A (en) * 1957-03-25 1961-09-12 Du Pont Novel filaments and fabrics
US3003223A (en) * 1957-03-25 1961-10-10 Du Pont Metal core composite filaments

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US2194589A (en) * 1936-08-28 1940-03-26 Kunz Alfonz Extrusion mold
US2161666A (en) * 1937-08-13 1939-06-06 New Jersey Rubber Company Weather stripping
US2360680A (en) * 1940-08-30 1944-10-17 Holzmann Hermann Spinning nozzle for the production of artificial hollow threads
FR53124E (fr) * 1940-08-30 1945-09-19 Degussa Tuyère de filage pour la fabrication de fils artificiels creux, et procédé pour la fabrication de ces tuyères
US2690595A (en) * 1951-06-22 1954-10-05 Davol Rubber Co Manufacture of low-pressure inflation catheters
US2703434A (en) * 1951-08-02 1955-03-08 British Celanese Extrusion
US2808617A (en) * 1952-09-05 1957-10-08 Terracini Vittorio Means for molding lengthy articles made from multi-colored plastic material
US2931091A (en) * 1954-02-26 1960-04-05 Du Pont Crimped textile filament
FR1153265A (fr) * 1955-03-08 1958-03-04 Schiesser Ag Trikotfabriken Corps d'ajutages de filage à trous multiples et son procédé de fabrication
US2932079A (en) * 1956-03-08 1960-04-12 Schiesser Ag Trikotfabriken Complex artificial filaments
US2861319A (en) * 1956-12-21 1958-11-25 Du Pont Intermittent core filaments
US2999296A (en) * 1957-03-25 1961-09-12 Du Pont Novel filaments and fabrics
US3003223A (en) * 1957-03-25 1961-10-10 Du Pont Metal core composite filaments

Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3197812A (en) * 1962-04-30 1965-08-03 Dietzsch Hans-Joachim Spinning head with plural nozzles
US3244785A (en) * 1962-12-31 1966-04-05 Du Pont Process for producing a composite sheath-core filament
US3439382A (en) * 1966-01-04 1969-04-22 American Enka Corp Spinneret assembly for spinning highly viscous polymeric substances
US3540080A (en) * 1966-09-21 1970-11-17 Inventa Ag Device for the spinning of multicomponent synthetic fibers
US3397427A (en) * 1966-09-27 1968-08-20 Du Pont Sealed vented insert spinneret
US3659983A (en) * 1969-02-19 1972-05-02 Dow Chemical Co Spinnerette for the production of hollow fibers
US3888610A (en) * 1973-08-24 1975-06-10 Rothmans Of Pall Mall Formation of polymeric fibres
US4346053A (en) * 1979-02-21 1982-08-24 American Cyanamid Company Process for melt-spinning hollow fibers
US4229154A (en) * 1979-04-04 1980-10-21 E. I. Du Pont De Nemours And Company Spinneret for the production of hollow filaments
US4321025A (en) * 1980-05-12 1982-03-23 Corning Glass Works Extrusion die
US5046936A (en) * 1988-12-22 1991-09-10 Societe Lyonnaise Des Eaux, S.A. Draw plate for the production of membranes of an organic material
US5256050A (en) * 1989-12-21 1993-10-26 Hoechst Celanese Corporation Method and apparatus for spinning bicomponent filaments and products produced therefrom
US5480598A (en) * 1991-05-21 1996-01-02 Brown Univ. Research Foundation Process of and apparatus for making hollow fibers
US6413071B1 (en) * 2000-03-27 2002-07-02 Basf Corporation Thin plate spinnerette assembly
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CH367270A (de) 1963-02-15
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