US3553774A - Spinning head for spinning bicomponent filaments - Google Patents

Spinning head for spinning bicomponent filaments Download PDF

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Publication number
US3553774A
US3553774A US754890A US3553774DA US3553774A US 3553774 A US3553774 A US 3553774A US 754890 A US754890 A US 754890A US 3553774D A US3553774D A US 3553774DA US 3553774 A US3553774 A US 3553774A
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United States
Prior art keywords
spinning
plate
nozzle plate
openings
distributor
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Expired - Lifetime
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US754890A
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English (en)
Inventor
Heinz Ruck
Gustav Dunweg
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JP Bemberg AG
Bemberg AG
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Bemberg AG
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Priority claimed from DE19671660236 external-priority patent/DE1660236C3/de
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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
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/06—Distributing spinning solution or melt to spinning nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/345—Extrusion nozzles comprising two or more adjacently arranged ports, for simultaneously extruding multiple strands, e.g. for pelletising
    • 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

  • ABSTRACT OF THE DISCLOSURE An improved construction in the distribution system of a spinning head for producing bicomponent filaments from two distinct fluid spinning compositions brought together for extrusion on either side of a thin knife edge intersecting each spinning opening of a multi-holed nozzle plate mounted on the face of the spinning head.
  • the elements of the distribution system essentially include a slotted distributor plate with separate radial channels and a comically-shaped insert having alternate inner and outer radial slots in fluid connection with separate feed means on the inlet side and with the radial channels of the distributor plate on the outlet side.
  • this invention relates to a spinning head having a nozzle plate on the face or lower end thereof containing a large number of spinning openings, bores 01' orifices and so designed as to permit the simultaneous spinning of a correspondingly large number of bicomponent filaments from two distinct fluid spinning compositions.
  • spinning heads it is necessary to conduct the different spinning solutions or fluid compositions separately through the spinning head up to a point immediately before the plane of the nozzle plate, the separately flowing streams then being united over a knife edge or similar wedge-shaped 'blade or projections so as to be extruded side by side in common through the spinning openings of the nozzle plate.
  • U.S. Pat. No. 3,176,342 discloses a spinning head containing concentric annular chambers which are separated or subdivided by concentric annular walls tapering to knife-like edges at their outer ends and arranged directly over the nozzle plate.
  • the nozzle plate itself is constructed with a plurality of concentric V- shaped corrugations or ridges which are engaged along their apexes by the knife-edged walls, these apexes also containing a plurality of spinning openings or orifices.
  • Another known spinning device as disclosed in German Pat. No. 956,714, also provides concentric annular spaces or else parallel, horizontally arranged channels for the separate conduction of the two diiferent spinning solutions to the spinning openings in the nozzle plate.
  • a certain amount of pressure balancing is achieved by distributor elements in this device, but the above-defined degree of utilization is again very small due to the manner in which the spinning head is constructed.
  • the filaments spun with this device have more of the appearance of so-called core-mantle filaments with their cross-sectional composition varying or changing in the linear direction of the filament.
  • Still another device is described in British Pat. No. 996,415 wherein the nozzle member of the spinning head forms a distributor system by means of horizontal and vertical bores of various diameters, this distributor system eid'iibiting V-grooves underneath in which there are fitted corresponding V'shaped grooves of the nozzle plate.
  • the nozzle plate. itself has Y-shaped spinning openings.
  • This particular spinning head permits the spinning or extrusion of a bicomponent filament with relatively constant composition, but the two components do not lie side by side in the cross-section of the filament and the position of the two components with respect to each other in this cross-section does not remain constant but varies in the linear direction of the filament and also varies from filament to filament.
  • this spinning head is quite expensive to manufacture, it also has the disadvantage that it is extremely diflicult to clean. Again, the above-defined degree of utilization is quite low.
  • German Pat. No. 970,603 describes a device for the spinning of multicomponent threads (side-by-side threads), in which the nozzle plate contains radially, parallel or concentrically arranged rows of holes or openings. Above the nozzle plate and at a short distance therefrom, there are situated multi-angled chambers with walls standing at an angle to one another, these walls being shaped as a knife-edge or separating blade at their lower ends.
  • This spinning device is quite well suited for the spinning in common of three or more components, but because of its low degree of utilization, it does not prevent a satisfactory solution to the problem of economically spinning bicomponent threads.
  • this spinning head provides many dead spaces in the flow of the spinning composition, so that depending upon the particular selection of a spinning solution, spinning melt or the like, the device clogs up or becomes plugged relatively frequently and can then be cleaned only with great difliculty.
  • One object of the present invention is to provide an improved spinning head for the production of synthetic bicomponent filaments 'by means of a nozzle plate and distributor construction and arrangement which provides a high degree of utilization, i.e. whereby a large number of bicomponent filaments can be spun from a single spinning unit.
  • Another object of the invention is to provide an improved spinning head for the production of bicomponent filaments wherein the construction and arrangement of parts presents as few dead flow spaces as possible so as to prevent clogging, while at the same time providing a spinning head which can be easily disassembled for cleaning and then reassembled in an accurate manner.
  • Yet another object of the invention is to provide a spinning head in which the fluid streams of the spinning compositions can be directed in a favorable manner from the viewpoint of flow technology, while guaranteeing a uniform composition of all of the bicomponent filaments issuing from the nozzle plate, such uniformity being achieved both longitudinally and cross-sectionally as well as from filament to filament. Furthermore, it is an object of the invention to provide a nozzle plate and distributor assembly in a spinning head which permits a number of variations in the properties and appearances of the spun bicomponent filaments and yarns obtained from a single spinning unit.
  • the improved spinning device of the invention includes: a spinning head in the form of a hollow, substantially cylindrical housing; a circular nozzle plate held in place on the front face of said spinning head; a circular distributor plate superimposed behind the nozzle plate Within the housing and having radially extending channels formed by side walls extending forwardly to intersect the spinning openings contained in the nozzle plate; a conically-shaped insert With its base superimposed behind the distributor plate within said housing and having inner and outer radial slots aligned with corresponding slots extending through the distributor plate into the radial channels thereof, the outer slots extending through the outer circumference of the conically-shaped insert to connect with an outer feed space in the housing and the inner slots extending inwardly from a central annular area of the base of said insert to connect with an inner feed space along the axis of the housing; and annular partition means in said housing separating the inner feed space from the outer feed space, these means including the conically tapered rear wall structure of the insert.
  • the invention may also be defined in combination with a conventional spinning head with its nozzle plate containing a plurality of spinning openings as an improvement for the distribution of each of the two spinning compositions to the spinning openings comprising:
  • a distributor plate arranged within said spinning head immediately behind said nozzle plate and having a plurality of radially extending channels separated from one another by forwardly extending projections, each of which terminates in a thin line edge in contacting relationship with the rear face of said nozzle plate so as V to intersect correspondingly positioned series of spinning openings in the nozzle plate, said distributor plate containing radial slots in fluid communication with each of said channels;
  • a radially narrowing substantially conical insert arranged 'within said spinning head with its base facing said distributor plate and containing a plurality of radially positioned alternate outer and inner slotted channels superimposed behind and in fluid connection with said distributor plate slots, said outer slotted channels extending axially through said insert around an outer circumferential portion thereof in fluid connection at their rearward ends with an annular outer feed space extending around and behind said insert in said spinning head and said inner slotted channels extending rearwardly flom the base and within said insert to an axially positioned inner feed space which projects rearwardly of said insert into a fluid conduit
  • nozzle plate may be supported in a conventional manner around its periphery to the spinning head, for example by suitable clamping or capping means, it is especially desirable when working under high spinning pressures to further support the nozzle plate at the center thereof, for example by bolting means which preferably interconnect the nozzle plate with the distributor plate and with the conical insert to the spinning head.
  • bolting means which preferably interconnect the nozzle plate with the distributor plate and with the conical insert to the spinning head.
  • the spinning head Since the projections or walls of the distributor plate which adjoinect the nozzle plateopenings must be very accurately positioned, it is advantageous for the spinning head to carry guide means on which the distributor plate and the conical insert, as well as any pressure balancing plate, can be carefully aligned so as to permit not only the proper position of the thin line edges on the nozzle plate openings but also to make certain that the interconnected slots and channels of the various elements of the distributor system are aligned in relationship to each other.
  • any suitable guide pins can be used for this purpose or else the inner circumferential surface of the housing corresponding to the spinning head may contain elongated keys or wedges at spaced circumferential positions and designed to fit into correspondingly profiled notches or recesses around the circumference of the distributor plate, pressure balancing plate and conical insert. Intermediate gaskets sealing these members can likewise be profiled in the same manner.
  • the combination of spinning apparatus according to the invention is particularly well adapted for the production of a very large number of bicomponent filaments wherein a specific ratio or proportion of each of the components can be established and maintained over the crosssection of each individual filament. Furthermore, as explained in greater detail below, special constructions and arrangements of the distributor plate and/ or of the nozzle plate permit special effects to be achieved in the spinning of the bicomponent filaments.
  • FIG. 1 is a cross-sectional view taken on the longitudinal axis of a spinning head constructed in accordance with the invention
  • FIG. 2 is a partial cross-sectional view taken on the longitudinal axis of another embodiment of the spinning head according to the invention, illustrating additional supporting means for the nozzle plate;
  • FIG. 3 is a partial cross-sectional view taken on line AA of FIG. 4 and illustrating only the conical insert and its integral feed conduit;
  • FIG. 4 is a bottom plan view of the conical insert
  • FIG. 5 is a bottom plan view of one embodiment of the pressure balancing plate and may also be taken as illustrating any one of the intermediate gaskets;
  • FIG. 6 is a bottom plan view of another embodiment of the pressure balancing plate or the similarly constructed gaskets
  • FIG. 7 is a bottom plan view of the distributor plate
  • FIG. 8 is a sectional view taken on line BB of the distributor plate as illustrated in FIG. 7;
  • FIG. 9 is a sectional view taken on line CC of the distributor plate as shown in FIG. 7;
  • FIG. 10 is a sectional segment of the conical insert, pressure balancing plate, distributor plate and nozzle plate in their assembled state as taken on line CC of FIG. 6 and line C'C' in FIG. 1;
  • FIGS. 11-15 are top plan views of a small segment of the nozzle plate illustrating various embodiments of the relationship between the thin line edges of the distributor plate and the spinning openings of the nozzle plate.
  • the pressure balancing plate 3 contains the rows of holes 31 and 32 as well as a recessed notch 33.
  • FIG. 5 may also represent the intermediate gaskets 8, these also contain the rows of holes 81 and 82 as well as the recessed notches 83.
  • These latter numbers have been placed in parentheses in order to indicate that they are associated only with the gaskets and not the pressure balancing plate. This same means of indicating both a pressure balancing plate and a gasket is also used in FIG. 6.
  • the spinning head of the invention is most completely illustrated in the axial cross-section of FIG. 1 where it has been placed in a vertical position so that the nozzle plate is mounted on the lower end of the spinning head. It will be apparent, however, that the spinning head can be mounted in other positions, so that throughout this specification the end of the spinning head containing the nozzle plate has been designated as the forward end with various elements then being positioned behind the nozzle plate and the top end of the spinning head as shown in the drawing being considered as the rearward end.
  • the spinning head 1 is preferably cylindrical in shape with a somewhat enlarged forward portion adapted to receive the nozzle plate and most of the elements of the distributor system.
  • a feed conduit 10 is arranged radially or laterally of the rearward portion of the spinning head, so as to introduce one of the fluid spinning compositions into a first annular outer feed space 11 within the housing.
  • a second feed conduit is arranged axially of the spinning head to introduce a second spinning composition into the temporary feed space 21 formed in part by the coupling or socket joint 2. It will be recognized that this socket joint 2 forms a threaded coupling with both the housing 1 and the feed conduit 20 thereby permitting these members to be readily disassembled.
  • the arrows in FIG. 1 generally indicate the direction of flow of the two spinning compositions through the apparatus.
  • the nozzle plate 5 is securely fastened by clamping its peripheral collar or flange 53 with the screw cap 6 which can be threadably engaged on the outer circumferential surface of the housing 1.
  • the nozzle plate contains a large number of spinning openings or orifices arranged in individual rows 51 and 52, various arrangements of these rows of openings being possible as indicated in FIGS. 11- 15, although the rows of openings are preferably centered on or near radial lines extending outwardly from the center point P of the nozzle plate 5 toward its outer periphery.
  • the distributor plate 4 containing a plurality of radially positioned slits or slots 41 and 42 and having a thin leading edge 43 projecting outwardly from the face thereof to rest in contact with the nozzleplate 5, the ridges or thin knife-like edges 43 of the distributor plate projection 4 as shown in greater detail in FIG. 10 being positioned so as to intersect the rows of the nozzle plate openings 51 and 52.
  • These forwardly extending projections of the distributor plate 4 also define radially positioned channels between adjacent pairs of projections, the radial slots 41 and 42 of the distributor plate opening centrally into these radial channels to provide a flow of the spinning composition to a portion of the spinning openings falling within either side of the channel.
  • a pressure balancing plate 3 containing rows of holes 31 and 32 (FIG. 5) or a corresponding plurality of radial slots 34 and 35 (FIG. 6) which are held in alignment with the slots of the distributor plate 4.
  • the comically-shaped insert 9 which contains a plurality of outer slots 91 extending through the coneshaped element around its outer circumference from the flat base thereof to the rearwardly sloping or tapering surface.
  • These radially positioned slots 91 alternate with inner radial slots 92 which are recessed in the base of the cone-shaped member 93 to provide a fluid communication with the rearwardly extending feed conduit or tube 94 which is formed integrally with the cone-shaped member 93.
  • the gaskets 8 which are also provided with rows of openings 81 and 82 or slots 84 and 85 coinciding with the openings or slots of the adjacent distributor elements. Also, all of these elements can be tightened together by means of the socket head cap screw 12 inserted through the bore 44 and countersunk recess 45 of the distributor plate (see FIG. 8). This cap screw also extends through corresponding central bores of the pressure balancing plate 3 and the gaskets 8, and is then screwed into the threaded cylindrical block 14 which in turn is threadably engaged at 96 with the conical insert 9.
  • a positive pressurized seal is placed over all of the interconnected elements so that they can be retained firmly in position and avoid any possibility of leakage of the spinning compositions, particularly in the area where the leading edges 43 of the distributor plate 4 contact the nozzle plate 5.
  • the feed conduit 94 integral with the cone-shaped member 93 is threaded at its most rearward end 95 (FIG. 3) in order to receive the nut 18 mounted over washer 17 and gasket 16, so that when not 18 is tightened the washer and gasket engage inwardly projecting flanges or shoulders 7 of the housing 1 and draw the distributor assembly axially toward the rear of the spinning head.
  • the entire distributor assembly is also firmly seated in the axial direction of the recessed spinning head 1.
  • the nozzle plate 5 can be readily removed by simply unscrewing the cap 6 and removing the nozzle plate. Access is then provided to the screw 12 which can be removed in order to disengage all of the elements of the distributor assembly other than the comically-shaped insert 9. In order to remove this insert 9, it is merely necessary to unscrew the spinning head 1 from the socket joint 2 in order to provide access to the nut 18 which has been tightened into the recess 19 on the spinning head inner shoulder or flange 7. If desired, the recessed space 19 can be filled with a packing or covered with a gasket of an inert material in order to avoid a dead space capable of collecting the spinning composition.
  • the reassembly of the device is greatly facilitated by means of the guide pins 15 carried in the housing 1 of the spinning head.
  • These guide pins 15 are placed to engage the recesses or notches diametrically opposed on the periphery of the various distributor elements, for example the notches 33 and 83 of the pressure balancing plate 3 or gasket 8 (FIGS. 5 and 6), the notches 97 of the conical insert 9 (FIG. 4) and the notches 46 of the distributor plate 4 (FIG. 7).
  • the various slots and/or openings in these elements can be maintained in perfect alignment over long periods of operation.
  • the apparatus is very easily disassembled for purposes of cleaning.
  • FIG. 2 illustrates a slightly different embodiment of the spinning head which is particularly adapted to operate under high spinning pressures.
  • the distributor elements 4, 8 and 3 bolted to the conical insert 9 through block 14, but also the nozzle plate 5 is interconnected with these members by means of the hexagonal screw 12' and the supporting washer 13.
  • the nozzle plate 5 is supported not only at its outer periphery by means of the flange or rim 53 on shoulder 61 of the screw cap 6, but it is also supported centrally so that during spinning a sagging of the nozzle plate can be prevented and at the same time there is also achieved a further sealing of the radial channels of the distributor plate 4 formed by the leading edges 43.
  • this precaution is not absolutely essential but does constitute a preferred construction in order to make absolutely certain that no spinning composition will leak from one radial channel to the next as it passes from the radial slots 41 and 42 to the individual spinning openings.
  • the path of fiow of the two spinning solutions or fluid spinning compositions can be viewed with particular reference to FIGS. 1 and 10 where the flow path is indicated by arrows.
  • the first spinning composition flows through the feed line 10 and passes into the annular feed space 11 which is preferably arranged concentrically around the inner feed conduit 94.
  • the spinning composition then flows forwardly in the spinning head 1 onto the conically tapering rear surfaces of the cone-shaped member 93.
  • this cone 93 has outer slots 91 and inner slots 92 which alternate in the circumferential direction, the outer slots 91 being connected with the feed space 11 while being partitioned from the second spinning composition which enters through inlet 20, through the temporary feed space and then into the enclosed axial feed space 94.
  • the second spinning composition As the second spinning composition is introduced into the distributor system, it flows through the inner slots 92 which are separated by radial walls of the cone 93 from the outer slots 92. This separation of the two flow streams is continued as the different spinning compositions pass downwardly through the coinciding openings or slots of the pressure balancing plate 3 and gaskets 8 as well as the slots 41 and 42 of the distributor plate 4. Each spinning composition then fiows outwardly in alternating sequence around the circumference of the distributor plate 4 through the radially positioned channels enclosed by the projecting edges 43. Each of the two spinning compisitions is thus brought separately to each side of each row of openings or orifices in the spinning nozzle plate.
  • the nozzle plate 5 has the same number of rows of openings 51 and 52 as those elements of the distributor assembly positioned directly behind the nozzle plate. These rows of openings in the nozzle plate, however, are staggered in relationship to the preceding slots or openings so as to fall directly in alignment with the leading edges 43 of the distributor plate 4. In most of the embodiments shown in the drawing other than FIGIS. l2-15, these rows of openings of the nozzle plate 5 are positioned on radial lines, each of which bisects the angle formed by the radial lines of two adjacent leading edges 43. In this manner, the edges 43 bisect the cross-sections of the individual holes in each of the rows 51 and 52 as shown in specific detail in FIG. 11.
  • the adjustment of the nozzle plate so that the edges 43 exactly bisect the openings 51 and 52, e.g. as seen in FIGS. 10 and 11, can be accomplished by hand while carefully controlling the tightening of the cap screw 6, but it is preferably accomplished by structural means such as the guide pins 15 which can extend forwardly from that shown in the drawing in order to engage notches in the nozzle plate similar to the notches or recesses 33, 46, 83 and 97 of the elements of the distributor assembly. (This particular means of aligning the nozzle plate is not represented in the drawing.)
  • the two separate spinning compositions pass over the leading edges 43 of the distributor plate 4 as supplied separately from the slots 41 and 42, they are joined together and pressed side by side in common through the spinning openings or orifices 51 and 52 of the nozzle plate 5. Where the edges 43 bisect these openings 51 and 52, it will be recognized that the individual components have approximately a 50:50 proportion of the cross-section of the extruded spun filament.
  • FIGS. 1115 a number of desirable modifications in the arrangement of the nozzle plate openings and the distributor plate leading edges are illustrated in FIGS. 1115.
  • FIG. 11 illustrates that arrangement in which both the rows of openings 51 and 52 and the leading thin edges 43 fall on the same radial lines extending from the center point P on the axis of the spinning head outwardly to the periphery of the nozzle plate.
  • FIGS. 12l5 the center lines of the rows of openings 51 and 52 are shown with a light broken line while the projection of the thin projecting adges 43 of the distributor plate 4 are indicated by the heavier broken lines.
  • the thin line edge for each forwardly extending projection 43 of the distributor plate 4 extends radially, passing through point P, in order to secantially intersect a row of individual spinning openings 51 or 52 positioned on a secantial line of the nozzle plate parallel to the line of the thin edge 43.
  • the proportion of the two spinning components can be varied in almost any ratio when viewing the filaments in cross section, while at the same time this ratio can be kept constant for all of the filaments being extruded by a single spinning head. This same result can be achieved by just the opposite arrangement as shown in FIG.
  • the rates of supply can be adjusted such that the two components emerge from the spinning opening with exactly the same velocity, thereby making certain that the spun filaments will have a high degree of uniformity.
  • the spinning head is adapted to simultaneously extrude filaments, some of which have only one component while others have only the other component, and a relatively large number of filaments have varying amounts of both components.
  • the spinning head of the invention it is possible by means of the construction and arrangement of the spinning head of the invention to produce a so-called elfect yarn by adjusting the nozzle plate in such a way that the individual spinning openings in the nozzle plate are arranged in rows on radial lines of the nozzle plate and the thin line edges of the forwardly extending projections 43 follow radial lines offset by a small central angle from the radial lines of the rows of openings.
  • the resulting spun filaments depending upon their spinning position with reference to the center of the nozzle plate, then present different proportions of each component. This variation in proportions, particularly with differently colored spinning solutions or compositions leads to yarns having a very highly distinctive and interesting appearance.
  • the distributor assembly in combination with a spinning head and nozzle plate in accordance with the invention, one achieves an optimum utilization of the nozzle plate surface, i.e. so as to produce a very large number of bicomponent filaments. This result is made possible essentially by the slots which extend substantially radially in each of the essential elements of the distributor assembly, i.e. the distributor plate itself and the conical insert.
  • the alternating arrangement of outer and inner slots in the conical insert is especially favorable from the viewpoint of flow technology, because in the first place there can be no flow dead spaces occurring in the conical insert and, in the second place, the cross-sectional dimensions of these slots in the conical insert widen steadily from the inlet to the outlet side of the insert, such that there normally occurs a sufiicient pressure balancing which is absolutely necessary in achieving homogeneous spun filaments of high quality.
  • the pressure balancing plate can obviously be added or even made an integral part of the conical insert or the distributor plate, thereby further enhancing the proper pressure balancing when working with highly viscous spinning compositions.
  • a distributor plate arranged within said spinning head immediately behind said nozzle plate and having a plurality of radially extending channels separated from one another by forwardly extending projections, each of which terminates in a thin line edge in contacting relationship with the rear face of said nozzle plate so as to intersect correspondingly positioned series of spinning openings in the nozzle plate, said distributor plate containing radial slots in fluid communication with each of said channels;
  • a radially narrowing substantially conical insert arranged within said spinning head with its base facing said distributor plate and containing a plurality of radially positioned alternate outer and inner slotted channels superimposed behind and in fluid connection with said distributor plate slots, said outer slotted channels extending axially through said insert around an outer circumferential portion thereof in fluid connection at their rearward ends with an annular outer feed space extending around and behind said insert in said spinning head and said inner slotted channels extending rearwardly from the base and Within said insert to an axially positioned inner feed space which projects rearwardly of said insert into a fluid conduit positioned within said annular outer feed space;
  • a pressure balancing plate is mounted between said distributor plate and the base of said conical insert said pressure balancing plate containing a plurality of radially positioned openings interconnecting the radial slots of said distributor plate and the radial slots of said insert.
  • said spinning head carries guide means to accurately position said distributor plate and said conical insert for alignment of their interconnected slots and channels in relationship to the spinning openings in said nozzle plate.
  • each forwardly extending projection of said distributor plate extends radially to secantially intersect a row of individual spinning openings positioned on a secantial line of the nozzle plate parallel to said edge.
  • An improved spinning device for the production of a plurality of bicomponent filaments which comprise:
  • a spinning head in the form of a hollow, ubstantially cylindrical housing
  • a circular distributor plate superimposed behind said nozzle plate within said housing and having radially extending chambers formed by side wall extending forwardly to intersect the spinning orifices contained in said nozzle plate;
  • a conically-shaped insert with its circular base superimposed behind said distributor plate within said housing and having alternate inner and outer radial slots aligned with corresponding slots extending through the distributor plate into said radial channels, the outer slots extending through an outer circumferential portion of said conically-shaped insert to connect with an outer feed space in said housing and the inner slots extending inwardly from a central annular area of the base of said insert to connect with an inner feed space along the axis of the housing;
  • partition means in said housing to separate said inner feed space from said outer feed space, said partition means including the conically tapered rear wall structure of said insert.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US754890A 1967-08-25 1968-08-23 Spinning head for spinning bicomponent filaments Expired - Lifetime US3553774A (en)

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DE19671660236 DE1660236C3 (de) 1967-08-25 1967-08-25 Spinnkopf zur Herstellung von künstlichen Fäden aus zwei verschieden zusammengesetzten Spinnlösungen

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FR (1) FR1603613A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1171600A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (7)

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US4102625A (en) * 1976-03-02 1978-07-25 Ing. A. Maurer S.A. Spinneret holder
US4681522A (en) * 1984-08-22 1987-07-21 Barmag Ag Melt spinning apparatus
US5466142A (en) * 1992-10-19 1995-11-14 Miani; Mario Two-component extrusion head, having a spinneret with high perforation density
US5573790A (en) * 1992-05-13 1996-11-12 Polysource Inc. Apparatus for manufacturing expandable polystyrene (EPS) pellets
US6413071B1 (en) 2000-03-27 2002-07-02 Basf Corporation Thin plate spinnerette assembly
CN103492619A (zh) * 2011-04-19 2014-01-01 特吕茨勒非织造布有限公司 用于湿纺的喷丝头
US11306413B2 (en) 2016-04-25 2022-04-19 Cytec Industries Inc. Spinneret assembly for spinning polymeric fibers

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Publication number Priority date Publication date Assignee Title
JPS5184912A (en) * 1975-01-21 1976-07-24 Mitsubishi Rayon Co Fukugososhikitaiseninoseizosochi
CN112695388B (zh) * 2020-12-22 2021-12-21 吉林大学 一种连续供液出液的静电纺丝装置

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102625A (en) * 1976-03-02 1978-07-25 Ing. A. Maurer S.A. Spinneret holder
US4681522A (en) * 1984-08-22 1987-07-21 Barmag Ag Melt spinning apparatus
US5573790A (en) * 1992-05-13 1996-11-12 Polysource Inc. Apparatus for manufacturing expandable polystyrene (EPS) pellets
US5466142A (en) * 1992-10-19 1995-11-14 Miani; Mario Two-component extrusion head, having a spinneret with high perforation density
US6413071B1 (en) 2000-03-27 2002-07-02 Basf Corporation Thin plate spinnerette assembly
CN103492619A (zh) * 2011-04-19 2014-01-01 特吕茨勒非织造布有限公司 用于湿纺的喷丝头
US20140044820A1 (en) * 2011-04-19 2014-02-13 Trutzschler Nonwovens Gmbh Spinneret for wet spinning
US9033692B2 (en) * 2011-04-19 2015-05-19 Trützschler Nonwovens & Man-Made-Fibers Gmbh Spinneret for wet spinning
CN103492619B (zh) * 2011-04-19 2016-08-17 特吕茨勒非织造布有限公司 用于湿纺的喷丝头
TWI547605B (zh) * 2011-04-19 2016-09-01 特呂茨勒非織造布有限責任公司 濕紡式之噴絲頭
US11306413B2 (en) 2016-04-25 2022-04-19 Cytec Industries Inc. Spinneret assembly for spinning polymeric fibers

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Publication number Publication date
GB1171600A (en) 1969-11-19
FR1603613A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1971-05-10

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