US3121254A - Apparatus for the spinning of hollow filaments - Google Patents

Apparatus for the spinning of hollow filaments Download PDF

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Publication number
US3121254A
US3121254A US846111A US84611159A US3121254A US 3121254 A US3121254 A US 3121254A US 846111 A US846111 A US 846111A US 84611159 A US84611159 A US 84611159A US 3121254 A US3121254 A US 3121254A
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Prior art keywords
plate
spinning
passage
face
axial
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Expired - Lifetime
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US846111A
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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
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/26—Composite fibers made of two or more materials
    • 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

  • This invention in general, relates to improvements in spinning nozzles for the spinning of hollow filaments from spinnable polymers and further relates to spinning plates and parts thereof for use in spinning nozzles for spinning hollow filaments.
  • This application is a continuation-inpart of our copending application Serial No. 779,977, filed December 12, 1958, now abandoned.
  • the manufacture of spinning nozzles useful for pro duction of hollow filaments, especially filaments used by the melt-spinning process, is unusually difiicult because the spinning openings must be bored with extreme precicision and the tolerances are very small in the center of the tubular passage through which the gaseous agent is conducted.
  • the diameter of the spinning orifices is in the order of 700g.
  • the outer diameter of the tubular passage for the fluid introduced into the center of the filament is in the order of 250 leaving a width across the annular opening formed between the spinning orifice and the tubular member in the order of 225 It will be apparent that even a slight inaccuracy in the centering of the tubular member in the spinning orifice will result in filaments having a mantle of uneven thickness.
  • our invention relates to spinning nozzles for spinning plates used therein which have proven extremely successful in actual practice.
  • T he spinning plate used in our invention is composed of three individual plates mounted on top of each other in face-to-face relationshipbeing held together by means of screws or the like.
  • the lower plate has a large number of spinning openings arranged in any suitable pattern.
  • the middle plate has a central opening through which is fed the spinning mass into a recess in the face of the middle plate opposite the lower plate.
  • This recess serves as a manifold chamber for distributing the spinning mass from the central opening outwardly to the spinning orifices in the lower plate.
  • annular, ring-shaped recess In the upper face of the middle plate or the lower face of the upper plate, or both, there is provided an annular, ring-shaped recess.
  • a plurality of bores, corresponding to and aligned with the spinning openings in the lower plate, extend through the middle plate between the manifold chamber and the annular recess.
  • the hollow inserts Securely posi-' tioned within these bores are hollow inserts which extend downwardly into the spinning openings in the lower plate and terminate in a capillary tube positioned centrally in each spinning orifice.
  • the hollow tubular inserts have a passage communicating with the recess in the upper face of the middle plate.
  • the upper plate consists essentially of a solid plate having a central opening communicating with the opening of the middle plate and may have the annular recess in the lower face, as above-described.
  • Sealing rings are inserted between the individual plates at strategic locations to provide fluid-tight seals between the plates.
  • washers or packings of greater thickness By selecting a washer or packing between the lower and middle plate of the desired thickness, the degree of protrusion of the capillary tube from the spinning orifice can be adjusted to the desired position.
  • One of the special advantages of the invention lies in the fact that the individual parts may be machined separately and thereafter assembled.
  • Each of the plates can be macm'ned individually by relatively simple machining techniques and therefiter assembled with the hollow tubular inserts being mounted in the middle plate before assembly of the plates.
  • Another advantage is that the assembled spinning plate of this invention can be dis assembled very simply for cleaning or replacement of parts.
  • the spinning plate can be repaired by simply changing one of the hollow tubular inserts.
  • FIG. 1 is a diametiic cross-sectional view of an assembled spinning plate with the hollow tubular inserts positioned therein on the left hand side of the crosssectional view and with the hollow tubular inserts being omitted on the right hand section to show the detail of the bores and spinning orifices in the middle and lower plates;
  • FIG. 2 is a partial, broken view in cross-section of a spinning head showing the mounting of the spinning plate of FIG. 1 in a spinning nozzle which, in turn, is mounted in the spinning head, the latter being only shown in segment;
  • FIG. 3 is a top plan view of the assembly of FIG. 1 with a portion of the top plate being broken away to show a portion of the middle plate in top plan view-a portion of the hollow tubular inserts being omitted for better illustration of the invention;
  • FIG. 4 is a bottom plan view of the assembly of FIG. 1;
  • FIG. 5 is an enlarged diametric cross-sectional view of the hollow tubular insert shown in FIGS. 1, 2 and 3;
  • FIG. 6 is an enlarged view in diametric cross-section of another embodiment of a hollow tubular insert which may be used in the present invention.
  • 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 spinning plates of this invention with the hollow tubular inserts positioned therein on the left hand side of the cross-sectional view and the hollow tubular inserts being omitted on the right hand side of said view to show the detail of the bores and spinning orifices in the middle and lower plates;
  • FIG. 9 is a cross-sectional view of the tubular insert taken on section 9-9 of PEG. 8;
  • FIG. is a cross-sectional view of the tubular insert mounted in the lower plate, shown in segment, with the cross-sectional View of said tubular insert being taken on section 10 19 of FIG. 9.
  • the spinning plate shown in FIGS. 1 and 3 of the drawing is made up of three disc-shaped, superposed plates which are mounted in face-toface relationship with each other. F or convenience in describing the invention, these plates will be designated as an upper plate 1, a middle plate 2 and a lower plate 3.
  • the upper plate 1 has a centrm aperture 4 for conducting a spinning mass therethrough.
  • the plate 1 is tightly held in face-to-lace relationship with the middle plate 2 by means of screws 5, whose heads are positioned in recesses 6 of the upper surface of the upper plate 1 and also by screws 7 placed about the periphery of the upper plate with the heads thereof in recesses 3 provided in the upper surface of the upper plate 1. These screws extend into tapped holes provided in the middle plate 2 and thus hold the plates in face-to-face relationship.
  • the middle plate 2 has a central flaring opening 9 communicating with the opening 4 of the upper plate 1.
  • a groove or recess 19 in the form of a circular ring.
  • a radial passage 11 is bored through .the plate 2 .to communicate the outer edge of the plate 2 wit the recess 10.
  • the bottom wall of the recess 10 has a plurality of radially-aligned groups of bores 12 having countersunk edges 13 and 14.
  • the lower face of the middle plate 2 has a cylindricallyshaped recess 15 of substantially the same diameter as the diameter of the outer wall of the ring-shaped recess 10. This recess serves as a distributing manifold for the spinning mass as will be described hereinafter.
  • the middle plate 2 also has several guide pins 16 frictional-1y held in apertures 17 provided in the plate 2.
  • the guide pins 16 are adapted to extend through aligned pass-ages 18 in the lower plate 3 and preferably extend outwardly beyond the lower face of the plate 3 by a distance at least equal to the protrusions of the capillary tubes hereinafter described.
  • the function of the pins 16 is that of guiding the assembly of the plate 2 with plate 3 so that the parts are properly aligned as [the two plates are assembled.
  • the lower plate 3 has a plurality of spinning openings 19 which are positioned therein in radially-aligned groups corresponding with the bores 12. in plate 2.
  • Each of the spinning openings 19 is composed of a cylindrical portion 19a, a tapered portion 19b and the spinning orifice itself, 19c of the desired diameter.
  • the plate 3 is held faceto-face relationship with the plate 2 by means of screws 21 whose heads are recessed in recesses 21 provided in the lower face of plate 3.
  • gaskets or packings 22, 23, 24, 25 and 26 are employed.
  • the gasket 22 is an O-ring gasket having holes therein for the screws 5.
  • Gaskets 23, 24, 25 and 26 are O-ring gaskets.
  • gaskets are preferably thin aluminum gaskets.
  • each tubular insert comprises a lower cylindrical portion 28 having an outer diameter less than the diameter of the portion 19a of the spinning openings .19.
  • an annular ring 29 forming an upper shoulder 36 having a taper identical with the taper of the countersunk portion 14 of the bore 12 in the plate 2.
  • An axial passage 32 extends substantially throughout the hollow [tubular insert 27.
  • the passage 32 widens at 33 into a cylindrical recess 34, which is internally threaded.
  • the threads of the passage 34 threadably engage the threaded shank 35 of a removable screw 36.
  • the screw 36 has a tapered lower surface 37 of a taper identical with the taper of the countersunk portion 13 of .the bore 12.
  • the screw 36 also has an axial passage 38 extending therethrough and communicating the passage 32 with the exterior of the screw 36.
  • the passage 33 terminates in the screw head groove 39.
  • the axial passage 32 terminates at its lower end in a tapered segment 4%.
  • the lower end of the hollow tubular insert 27 has an axial opening 41 in which is mounted a capillary tube 42 which extends outwardly from the lower end of the insert 27. The gas or liquid discharged into the center of the filament exits from the capillary tube 42.
  • the hollow tubular insert 27a shown in FIG. 6, is substantially identical with that shown in FIG. 5 and like numerals have been used to designate like parts.
  • the hollow tubular insert shown in FIG. 6 shows a modification in the configuration of the ring :29 the use of a hat, upper shoulder 39a instead of a tapered shoulder as shown in FIG. 5. By this construction, it is not necessary to employ a countersunk edge such as that shown at 14 for the bores 12.
  • the embodiment of FIG. 6 illustrates the use of guide v anes or wings 43 whichhave sloping bottom Walls 44 and rounded side walls 45. The distance between opposite side walls is slightly less the diameter of the portion 1% of the spinning openings 19 so that these vanes act to guide and center the hollow tubular insert and its capillary tube 42 in the spinning opening when the plates 2 and 3 are assembled.
  • the spinning plates of this invention are assembled by first inserting the hollow tubular inserts 27, with the screws 36 removed, in the bores 12 ⁇ of the plate 2. Upon threading the screw 36 into the tubular insert, the latter are securely mounted in the middle plate 2. If desired or necessary, packing material may be inserted between the shoulder 30 and the countersunk portion 14 and between the tapered lower surface 37 of the screw 36 and the countersunk portion 13 to provide fluidatight seals. After each of the hollow tubular inserts 27 has been properly mounted in plate 2, the latter is assembled with the plate 3. Guide pins 16 are employed to align the parts properly to avoid accidental damage or breakage to the delicate capillary tubes 42 when the parts are being assembled.
  • the capillary tubes 42 may either extend outwardly trom the outer edge of the spinning orifices 19, they may be even therewith, or they may be actually recessed from the outer edge of the spinning orifices 19.
  • One way of regulating this positioning of the capillary tubes 42 with respect to the spinning orifices 19 is by varying the thicknesses of the gaskets 25, 26 in the manner previously described. Alter the plates 2 and 3 are assembled, the screws 20 are inserted and tightened.
  • the upper plate 1 may be mounted on the middle plate 2 after which screws 5 and 7 are tightened thus giving the assembled spinning plate.
  • FIG. 2 illustrates the mounting of the spinning plates in a spiiming nozzle, which nozzle, in turn, is mounted i a spinning head.
  • the spinning head 46 (only a segment being shown) has a cylindrical bore 47 into which is pressfitted a spinning nozzle designated generally at 48. Inside the spinning nozzle 48 there is provided a holder 49 for holding the plates 1, 2 and 3 in the spinning nozzle.
  • the holder 36 has a central bore 59 composed of a cylindrical portion tapered portion Sill) and a cylindrical portion 59c. At the end of the cylindrical portion 590 there is an inwardly-turned flange 51 which bears against the plate 3.
  • an aluminum ring 52 which holds a filter member 53the latter functioning to screen out any particles which would block a small passage in the spinning apparatus.
  • the filter 53 is spaced from the plate 1 to provide a feed space 54.
  • a washer-like plate 55 of generally cylindrical shape with a tapered portion corresponding to the taper at Stlb.
  • the plate 55 has a spinning mass feed passage 56 extending therethrough. O-ring packings 57 and 58 are provided to sefl the spinning apparatus against flow of the spinning mass to undesired areas.
  • the holder 49 and its contained parts are held within the recess of the spinning nozzle 48 by means of a cylindrical sleeve 59 which has an inwardly-turned flange 66.
  • the sleeve 59 is ex ernally-threaded for threaded engagement with internal threads provided on the cylindrical walls of the recess in the spinning nozzle 48.
  • the rem face of the nozzle 48 has a passage 61. through which the spinning mass supplied under pressure to the spinning head passes for subsequent passage through parts of the spinning nozzle from which it eventually emerges as a filament.
  • the holder 49 has in the cylindrical portion 590 an annular groove 64.
  • the groove 64 is positioned to correspond with the position of the passage 11 in the plate 2.
  • a fluid supplied to the annular groove 64- through vertical passage 65 in the holder 49 and the tube 66 inserted therein, will be supplied through the passage 11 to the recess 10.
  • the spinning mass supplied to the spinning head flows through passages 61 arid 55, filter element 53, and feed space 54 into the passage 4 of the assembled spinning plates. It then flows through the flared opening 9 into the recess 15, which serves as a manifold for distributing the spinring mass to the various spinning openings 19.
  • the spinning mass then flows downwardly through the annular space formed between the walls or" the spinning opening 19 and the tubular inserts 27 and emerges in filament form from the spinning orifice 19.
  • the gases or liquids supplied through the capillary tubes 27 cause the filaments to take the form of a hollow filament.
  • the hollow inserts of this embodiment of the invention are slightly conically tapered in the upper portion which extends into the middle plate.
  • the taper is a slight taper with the mean diameter of the conically tapered part corresponding to the diameter of the bore in the middle plate in which the insert is mounted.
  • screws without flanges are employed for the mounting of the inserts. At the tightening of the screws the hollow inserts are fitted securely into the bores of the middle plate. Without any special packing the inserts are so solidly seated in the bores that no penetration or leakage of the spinning mass can occur.
  • FIG. 8 is a spinning plate of three superposed, disc-shaped plates in face-to-face relationship.
  • the spinning plate comprises a lower plate 71, middle plate 72, and upper plate 73.
  • the lower plate 71 has a series of radially aligned spinning openings 74 in groups of four. Rearward of the spinning openings are enlarged bore portions 75 forming guide walls for a purpose later described, and rearward or above the guide portions 75 are passage segments 76 of even larger diameter with countersunk edges 77.
  • the middle plate 72 has a central opening 78 which flares outwardly in the direction of adjoining plate 71 into a feed space 79 formed by a circular recess in the lower face of plate 72.
  • the recess 73 can be in the contiguous upper face of plate 71.
  • the upper plate 73 has in the lower surface which is in contact with plate 72 a ring-shaped recess 84), which serves as a manifold for the distribution of the gaseous or liquid medium.
  • This recess 81) is connected with the feed space 79 in plate 72 by bores 81 aligned with bores 75, 76.
  • the hollow tubular inserts 82 which terminate in capillary tubes 83, are mounted in fluid-tight contact in the lower part of bores 81 and extend through bores 75, 76 in lower plate 71.
  • the gaseous or liquid media which is supplied to the ring-shaped recess through a number of radial passages 83, pass through the central bores 84 of screws 85 and then through the axial passages in the hollow tubular inserts and the capillary tubes 83 into the filament as it is spun.
  • thin aluminum sealing rings 86 which, in uncompressed states, have a thickness of about 0.1 mm. They prevent the leakage of the spinning mass from the feed space 79 between plates 71 and 72, and also the penetration of the gaseous or liquid maximrn from the feed space 39 between plates 72 and 73.
  • Plate 72 is further provided with at least three guide prongs $7, solidly held in bores 88 in plate 72.
  • the protruding length of guide prongs 87 is somewhat greater than the thickness of plate 71.
  • These guide prongs 87 slide in the seating bores 89 of plate 71 and, in the assembled spinru'ng plate wherein the three plates 71, 72, and 73 are held together by threaded bolts 90, they project somewhat beyond the lower face.
  • the spinning mass is supplied through the central pas sage 91 in plate 73 to the manifold recess 79.
  • the spinning plate of FIG. 8 may be used in the spinning nozzle of FIG. 2.
  • the plates 71, 72, and 73 are assembled as previously described with respect to the previous embodiment.
  • the hollow tubular inserts 82 are mounted in plate 72 in a slightly diiferent manner.
  • FIGURE 10 shows a hollow tubular insert 82 on a larger scale. Its upper part 92 is slightly tapered from the outer end. The mean diameter of the tapered part 92 substantially equals the diameter of bore 81.
  • the hollow tubular inserts 82 are inserted from the upper side of plate 72 and are tightly wedged in bores 81 by turning down screws 85, which are threadedly mounted in the threaded portions 93 in the upper portions of bores 81.
  • the lower edges of screws 85 which in this instance have no flanges, drive the inserts 82 downwardly into bores 81.
  • the outer wall of the inserts 82 have axial recesses or channels 94 to permit passage of the spinning mass through bore portions 75, while the ribs 95 serve as guides in contact with the cylindrical wall of bore portions 75 to exactly center of the hollow tubular insert upon assembly of the spinning plate.
  • the spinning plates and nozzles according to our invention can be produced in the sme size as standard spinning nozzles or plates, so that they can be installed in the spinning heads of available spinning machines. With a diameter of 139 mm., as many as spinning openings can be provided.
  • 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 without difficulty and, if need be, the tubular inserts can be changed without replacing other parts of the apparatus.
  • a spinning plate for spinning nozzles for spinning a plurality of hollow filaments comprising a cylindrical first plate with two circular faces, one of said faces having a plurality of spinning orifices therein arranged in concentric, circular rows, the other of said faces being in face-toface relationship with a circular face of a cylindrical second plate, one .of the opposing faces of said first and second plates having a cylindrical recess therein, axial.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US846111A 1957-12-14 1959-10-13 Apparatus for the spinning of hollow filaments Expired - Lifetime US3121254A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEV13550A DE1180881B (de) 1957-12-14 1957-12-14 Spinnduese zur Erzeugung multifiler Hohlfaeden
DEV15234A DE1279888B (de) 1957-12-14 1958-10-17 Spinnduese zur Erzeugung multifiler Hohlfaeden

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US3121254A true US3121254A (en) 1964-02-18

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US846111A Expired - Lifetime US3121254A (en) 1957-12-14 1959-10-13 Apparatus for the spinning of hollow filaments

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US (1) US3121254A (de)
AT (2) AT210057B (de)
BE (1) BE572112A (de)
CH (2) CH366353A (de)
DE (2) DE1180881B (de)
FR (1) FR1206442A (de)
GB (2) GB909576A (de)
NL (4) NL126668C (de)

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US3274324A (en) * 1961-10-30 1966-09-20 Owens Corning Fiberglass Corp Apparatus for forming heat-softenable materials
US3350741A (en) * 1965-04-22 1967-11-07 Toho Beslon Co Spinneret device for spinning side-by-side type of composite fibers
US3397427A (en) * 1966-09-27 1968-08-20 Du Pont Sealed vented insert spinneret
US3421873A (en) * 1966-03-17 1969-01-14 Jerome A Burgman Method and apparatus for producing an intermittently hollow glass filament
US3439382A (en) * 1966-01-04 1969-04-22 American Enka Corp Spinneret assembly for spinning highly viscous polymeric substances
US3510393A (en) * 1962-10-01 1970-05-05 Ppg Industries Inc Hollow glass article
US3540080A (en) * 1966-09-21 1970-11-17 Inventa Ag Device for the spinning of multicomponent synthetic fibers
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US3888610A (en) * 1973-08-24 1975-06-10 Rothmans Of Pall Mall Formation of polymeric fibres
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US4376624A (en) * 1981-08-06 1983-03-15 Osrow Products Corporation Extrusion die for a pasta-making kitchen appliance
US4493629A (en) * 1983-12-27 1985-01-15 Monsanto Company Modular spinnerette assembly
US4846653A (en) * 1987-04-01 1989-07-11 Neumunstersche Maschinen - und Apparatebau GmbH (Neumag) Pack of spinning nozzles for forming two component filaments having core-and-sheath structure
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
US5647883A (en) * 1994-09-21 1997-07-15 Owens Corning Fiberglas Technology Inc. Apparatus for making hollow multi-component insulation fibers
US20060049542A1 (en) * 2004-09-09 2006-03-09 Benjamin Chu Apparatus for electro-blowing or blowing-assisted electro-spinning technology and process for post treatment of electrospun or electroblown membranes
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 (de) 2010-12-08 2012-06-13 Buckeye Technologies Inc. Dispergierbares Vlieswischmaterial
US20120174629A1 (en) * 2009-06-26 2012-07-12 Heraeus Quarzglas Gmbh & Co. Kg Method and device for drawing a quartz glass cylinder from a melt crucible
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
WO2018132692A1 (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
WO2018132688A1 (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
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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
US20230008772A1 (en) * 2021-07-08 2023-01-12 University Of Kentucky Research Foundation Spinneret, blowing system and method for producing hollow fibers

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US3274324A (en) * 1961-10-30 1966-09-20 Owens Corning Fiberglass Corp Apparatus for forming heat-softenable materials
US3268313A (en) * 1962-10-01 1966-08-23 Pittsburgh Plate Glass Co Method and apparatus for forming hollow glass fibers
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US3350741A (en) * 1965-04-22 1967-11-07 Toho Beslon Co Spinneret device for spinning side-by-side type of composite fibers
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US3421873A (en) * 1966-03-17 1969-01-14 Jerome A Burgman Method and apparatus for producing an intermittently hollow glass filament
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
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US3574889A (en) * 1968-11-18 1971-04-13 Charles H Hire Multiport extruding die
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US7887311B2 (en) * 2004-09-09 2011-02-15 The Research Foundation Of State University Of New York Apparatus and method for electro-blowing or blowing-assisted electro-spinning technology
US20060049542A1 (en) * 2004-09-09 2006-03-09 Benjamin Chu Apparatus for electro-blowing or blowing-assisted electro-spinning technology and process for post treatment of electrospun or electroblown membranes
US20090123591A1 (en) * 2004-09-09 2009-05-14 The Research Foundation Of Suny Apparatus for electro-blowing or blowing-assisted electro-spinning technology and process for post treatment of electrospun or electroblown membranes
US7934917B2 (en) * 2004-09-09 2011-05-03 The Research Foundation Of State University Of New York Apparatus for electro-blowing or blowing-assisted electro-spinning technology
US7919419B2 (en) 2005-01-06 2011-04-05 Buckeye Technologies Inc. High strength and high elongation wipe
US20110159265A1 (en) * 2005-01-06 2011-06-30 Buckeye Technologies Inc High Strength and High Elongation Wipes
US8501647B2 (en) 2005-01-06 2013-08-06 Buckeye Technologies Inc. High strength and high elongation wipes
US20090092809A1 (en) * 2005-01-06 2009-04-09 Buckeye Technologies Inc. High Strength And High Elongation Wipe
US20120174629A1 (en) * 2009-06-26 2012-07-12 Heraeus Quarzglas Gmbh & Co. Kg Method and device for drawing a quartz glass cylinder from a melt crucible
EP2463425A1 (de) 2010-12-08 2012-06-13 Buckeye Technologies Inc. Dispergierbares Vlieswischmaterial
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US20230008772A1 (en) * 2021-07-08 2023-01-12 University Of Kentucky Research Foundation Spinneret, blowing system and method for producing hollow fibers

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Publication number Publication date
NL242014A (de)
NL233917A (de)
GB909576A (en) 1962-10-31
DE1279888B (de) 1968-10-10
NL126667C (de)
FR1206442A (fr) 1960-02-09
DE1180881B (de) 1964-11-05
AT210057B (de) 1960-07-11
CH366353A (de) 1962-12-31
NL126668C (de)
GB929430A (en) 1963-06-26
BE572112A (de)
CH384773A (de) 1965-02-26
AT214570B (de) 1961-04-10

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