US3307216A - Annular spinning apparatus - Google Patents

Annular spinning apparatus Download PDF

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Publication number
US3307216A
US3307216A US401498A US40149864A US3307216A US 3307216 A US3307216 A US 3307216A US 401498 A US401498 A US 401498A US 40149864 A US40149864 A US 40149864A US 3307216 A US3307216 A US 3307216A
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US
United States
Prior art keywords
molten polymer
spinning pack
spinneret
bed
pack
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US401498A
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English (en)
Inventor
Dunn Albert
Mountain Kings
Russell Luther
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.)
Celanese Corp
Original Assignee
Fiber Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fiber Industries Inc filed Critical Fiber Industries Inc
Priority to US401498A priority Critical patent/US3307216A/en
Priority to ES0317665A priority patent/ES317665A1/es
Priority to GB41321/65A priority patent/GB1105064A/en
Priority to NL6512860A priority patent/NL6512860A/xx
Priority to DK509865AA priority patent/DK111580B/da
Priority to FR33768A priority patent/FR1450030A/fr
Priority to CH1368365A priority patent/CH463688A/fr
Priority to BE670511D priority patent/BE670511A/xx
Application granted granted Critical
Publication of US3307216A publication Critical patent/US3307216A/en
Anticipated expiration legal-status Critical
Assigned to CELANESE CORPORATION A DE CORP reassignment CELANESE CORPORATION A DE CORP ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: FIBER INDUSTRIES INC
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/69—Filters or screens for the moulding material
    • 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

Definitions

  • ANNULAR SPINNING APPARATUS Filed Oct. 5, 1964 F/GURE //7 1/6 0 fors A/berf Dun/v Lu/her Passe/l BY $351k V A ffomey United States Patent ()fitice 3,3fi'LZlfi Patented Mar. 7, 1967 3,307,216 ANNULAR SPINNING APPARATUS Albert Dunn, Kings Mountain, and Luther Russell, Gastonia, N.C., assiguors to Fiber Industries, Inc., a corporation of Deiaware Filed Oct. 5, 1964, Ser. N 401,498 2 Claims. (Cl.
  • This invention relates to a new and useful apparatus for the production of filaments and the like from a synthetic polymeric material and more particularly, to an improved melt spinning pack for the melt extrusion of filaments from synthetic linear polymers such as, polyamides, polyesters, polyolefins and the like.
  • melt spinning pack of this invention provides an improved melt spinning pack over the known conventional types.
  • the distinct advantages of the melt spinning pack of this invention over the known types are numerous and include, among others: 1) a larger surface area of filtration within substantially the same confined area; (2) a lower pressure drop as the molten polymer passes through the melt spinning pack; (3) an improved uniformity of flow path; (4) no stagnant zones; (5) improved heat interchange; (6) a relatively thin bridge plate is required; (7) a greatly reduced total force acting on the bottom and top of the pack is present when passing molten polymer through; (8) a low volume of granular inert material such as sand is required; (9) the temperature difference across the granular bed is minimized because of the construction of the spinning pack of this invention.
  • FIGURE 1 is a side view crosssection of a preferred embodiment of this invention describing an annular shaped melt spinning pack
  • FIGURE 2 is a top view of the apparatus of FIGURE 1 taken at 22 to demonstrate the shape of the melt spinning pack.
  • the melt spinning pack of this invention is unique in the manner in which the molten polymer can be fed and withdrawn from the granular inert material used for filtration.
  • the inlet means for the molten polymer is placed in such a manner so as to surround the outer perimeter of the granular bed except for that area lying adjacent to and in a parallel plane to the spinneret.
  • the outlet means for the molten polymer is placed in a corresponding manner at the internal base of the granular bed to that of the inlet means so that the granular bed has substantially a uniform depth from the corresponding points in the inlet and outlet means which are in the same plane. Under these conditions, the molten polymer will fill completely the inlet means before going through the granular bed.
  • a particle of the polymer will flow from the point in the inlet means in substantially the same plane from that point through the granular bed to the outlet means since this is the path of least resistance.
  • a particle of molten polymer will be treated identically throughout the entire granular bed and establish a uniform flow path without any stagnant zones being present.
  • the arrangement of the granular bed between the inlet means and outlet means described above will also provide a larger surface area of filtration within substantially the same confined area of the conventional spinning pack.
  • FIGURE 1 describing a preferred embodiment of the melt spinning pack of this invention is found to be especially useful in spinning highly viscous polymers.
  • the melt spinning pack has an outer and inner ring 11 and 9, respectively, with a top cover 8.
  • the combination of the outer and inner rings 11 and 9, with the top cover 8, comprises the body of the met spinning pack which contains spinneret orifices 1th confined in annular shape around an inner space void 18.
  • the melt spinning pack contains outlet means or channels 20 formed by a bridge plate 13 and an inner wire gauze filter 14.
  • the inner wire gauze 14 holds the inner granular material in the filter bed 12 while the outer corrugated ring 15 acts as the inlet means and channels for the molten polymer to the filter bed 12 and also holds the outer granular material of the filter bed 12;.
  • the filter bed 12 is shaped in the form of a cross-sectional inverted U wherein the outer perimeters of the U-shaped unit contain the inlet means and the closed base of the cross-sectional U-shaped perimeters is initially contacted by the molten polymer.
  • the inner perimeter of the cross-sectional U-shaped filter bed 12 contains the outlet means which provides channels to the spinneret at the open end of the U-shaped unit for permitting flow of the molten polymer to be spun from the spinneret.
  • the molten polymer enters the spinning pack at entrance 17 and enters channel 21 through pipe 16. After the channels 21 are filled with molten polymer, the inlet means 15 are then filled as described above.
  • the melt spinning pack is essentially heated from an outer source, not shown, in which the spinning pack is placed, but in addition, has an inner heating unit 19 to supply a more uniform distribution of heat.
  • the shape of the preferred embodiment of this invention has the appearance of an annular or ring-like shaped doughnut with the hole or space void in the center of the pack. Utilizing this shape provides accessibility to the inner row of extruded threads through the center of the spinning pack as well as heating the inner portions of the pack.
  • the surface and filtration area of the granular bed in the appara tus of FIGURE 1 is significantly increased by utilizing an annular shape over the surface and filtration area of a granular bed of the same depth of a spinning apparatus normally used which is not confined in an annular shape.
  • the shape of the granular bed within the annular spinning pack is not necessarily critical but for purposes of this invention, it is essential that the granular bed have a substantially uniform depth.
  • polyethylene terephthalate polymer having a viscosity of 9000 poises was extruded through the annular melt spinning pack as described in FIGURE 1 of the accompanying drawing, at a throughput of 42 pounds per hour.
  • the initial spinning pressures were 1100 pounds per square inch gauge compared to 3000 pounds per square inch gauge utilizing a nonannular conventional melt spinning pack of a comparable size.
  • the material of construction for the melt spinning pack of this invention can be any type of metal normally used for this type of pack.
  • the inert granular material which can be used in the filter beds or granular beds can be various types of finely divided material such as sand, steel balls, iron filings, stainless steel fil'ngs, glass beads and similar inert substances. It is preferred, however, to use silica sand since it is relatively cheap, inert and does not tend to matt down and stop the openings of the metal gauze.
  • the apparatus of this invention is particularly suitable for the melt spinning polymers which can be highly viscous such as polyethylene terephthalate, nylon, polyolefins, and the like.
  • An annular melt spinning pack having a spinneret containing a plurality of orifices for shaping filamentforming material as molten polymer is extruded therethrough wherein said spinning pack is internally confined in an annular shape surrounding an external space void,
  • inlet means for said molten polymer surrounding the outer perimeter of said granular bed other than the perimeter lying adjacent to and in parallel plane to said splnneret, outlet means for said molten polymer establishing a base for said granular bed in a correesponding spaced relationship with said inlet means to provide a substantially uniform depth of said inert material throughout said granular bed between said inlet means and said outlet means and collecting means for said molten polymer in the form of an internal annular space in said spinneret pack connecting said outlet means and said spinneret orifices.
  • An annular melt spinning pack having a spinneret containing a plurality of orifices for shaping filamentforming material as molten polymer is extruded therethrough wherein said spinning pack is internally confined in an annular shape surrounding an external space void, a cross-sectional inverted U-shaped granular bed of finely divided inert material contained within said spinning pack, wherein the closed portion of said cross-sectional inverted U-shaped granular bed is placed in the initial direction of polymer flow, inlet means for said molten polymer surrounding the outer perimeter of said crosssectional inverted U-shaped granular bed, outlet means for said molten polymer surrounding the inner portions of said cross-sectional inverted U-shaped granular bed in a corresponding spaced relations-hip with said inlet means to provide a substantially uniform depth of said inert material throughout said granular bed between said inlet means and outlet means, and collecting means for said molten polymer in the form of an internal annular space in said spinneret pack connecting said outlet means and

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US401498A 1964-10-05 1964-10-05 Annular spinning apparatus Expired - Lifetime US3307216A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US401498A US3307216A (en) 1964-10-05 1964-10-05 Annular spinning apparatus
ES0317665A ES317665A1 (es) 1964-10-05 1965-09-21 Dispositivo de hilado de masa fundida.
GB41321/65A GB1105064A (en) 1964-10-05 1965-09-29 Apparatus for spinning artificial filaments
NL6512860A NL6512860A (da) 1964-10-05 1965-10-04
DK509865AA DK111580B (da) 1964-10-05 1965-10-05 Spindehoved.
FR33768A FR1450030A (fr) 1964-10-05 1965-10-05 Ensemble de filage au fondu
CH1368365A CH463688A (fr) 1964-10-05 1965-10-05 Appareil de filage au fondu
BE670511D BE670511A (da) 1964-10-05 1965-10-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US401498A US3307216A (en) 1964-10-05 1964-10-05 Annular spinning apparatus

Publications (1)

Publication Number Publication Date
US3307216A true US3307216A (en) 1967-03-07

Family

ID=23588003

Family Applications (1)

Application Number Title Priority Date Filing Date
US401498A Expired - Lifetime US3307216A (en) 1964-10-05 1964-10-05 Annular spinning apparatus

Country Status (8)

Country Link
US (1) US3307216A (da)
BE (1) BE670511A (da)
CH (1) CH463688A (da)
DK (1) DK111580B (da)
ES (1) ES317665A1 (da)
FR (1) FR1450030A (da)
GB (1) GB1105064A (da)
NL (1) NL6512860A (da)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3642406A (en) * 1971-01-07 1972-02-15 Baker Perkins Inc Mixing, extruding, and severing apparatus
US4260350A (en) * 1980-04-16 1981-04-07 Fiber Industries, Inc. Filter for high viscosity liquids
DE3331543A1 (de) * 1982-09-23 1984-03-29 Fiber Industries, Inc., Charlotte, N.C. Verfahren zum schmelzspinnen polymerer filamente
US4605364A (en) * 1982-09-23 1986-08-12 Celanese Corporation Melt-spinning apparatus for polyester filaments
FR2681001A1 (fr) * 1991-09-10 1993-03-12 Vetrotex France Sa Tete d'extrusion pour la production de fils a partir d'une matiere rendue pateuse par chauffage.
DE19643425C2 (de) * 1996-10-22 1999-12-02 Geb Schroeder Beeck Sandlose Spinndüse
WO2016086821A1 (zh) * 2014-12-04 2016-06-09 郑州中远氨纶工程技术有限公司 弹性纤维干法纺丝用控温箱

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145967A (en) * 1983-09-06 1985-04-11 Polyfine Fibres & Eng Spinning head for plastics filaments, means for treating filament with liquids
FR2594857B1 (fr) * 1986-02-21 1989-10-20 Calvete Capdevila Eugenio Dispositif pour tetes d'extrusion de filaments en matieres thermoplastiques
DE3909382A1 (de) * 1989-03-22 1990-10-11 Agfa Gevaert Ag Filterelement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE329975C (de) * 1920-04-11 1920-12-04 Erich Schuelke Dr Vor der Spinnduese liegendes Filter fuer Zellstoffloesungen
US2881474A (en) * 1955-09-26 1959-04-14 American Cyanamid Co Spinning device
US2936482A (en) * 1955-06-30 1960-05-17 Du Pont Spinneret assembly
CH367591A (it) * 1961-07-12 1963-02-28 Snia Viscosa Dispositivo per la filatura a umido di materiali tessili artificiali
US3104419A (en) * 1962-08-24 1963-09-24 Du Pont Spinneret pack
US3204289A (en) * 1962-08-22 1965-09-07 Monsanto Co Screw conveying apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE329975C (de) * 1920-04-11 1920-12-04 Erich Schuelke Dr Vor der Spinnduese liegendes Filter fuer Zellstoffloesungen
US2936482A (en) * 1955-06-30 1960-05-17 Du Pont Spinneret assembly
US2881474A (en) * 1955-09-26 1959-04-14 American Cyanamid Co Spinning device
CH367591A (it) * 1961-07-12 1963-02-28 Snia Viscosa Dispositivo per la filatura a umido di materiali tessili artificiali
US3204289A (en) * 1962-08-22 1965-09-07 Monsanto Co Screw conveying apparatus
US3104419A (en) * 1962-08-24 1963-09-24 Du Pont Spinneret pack

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3642406A (en) * 1971-01-07 1972-02-15 Baker Perkins Inc Mixing, extruding, and severing apparatus
US4260350A (en) * 1980-04-16 1981-04-07 Fiber Industries, Inc. Filter for high viscosity liquids
DE3331543A1 (de) * 1982-09-23 1984-03-29 Fiber Industries, Inc., Charlotte, N.C. Verfahren zum schmelzspinnen polymerer filamente
US4514350A (en) * 1982-09-23 1985-04-30 Celanese Corporation Method for melt spinning polyester filaments
US4605364A (en) * 1982-09-23 1986-08-12 Celanese Corporation Melt-spinning apparatus for polyester filaments
FR2681001A1 (fr) * 1991-09-10 1993-03-12 Vetrotex France Sa Tete d'extrusion pour la production de fils a partir d'une matiere rendue pateuse par chauffage.
EP0532407A1 (fr) * 1991-09-10 1993-03-17 Vetrotex France Tête d'extrusion pour la production de fils à partir d'une matière rendue pâteuse par chauffage
WO1993004840A1 (fr) * 1991-09-10 1993-03-18 Vetrotex France Tete d'extrusion pour la production de fils a partir d'une matiere rendue pateuse par chauffage
US5431555A (en) * 1991-09-10 1995-07-11 Vetrotex France Extrusion head for producing yarns from a material which has been heated to form a paste
DE19643425C2 (de) * 1996-10-22 1999-12-02 Geb Schroeder Beeck Sandlose Spinndüse
WO2016086821A1 (zh) * 2014-12-04 2016-06-09 郑州中远氨纶工程技术有限公司 弹性纤维干法纺丝用控温箱

Also Published As

Publication number Publication date
GB1105064A (en) 1968-03-06
ES317665A1 (es) 1966-04-01
DK111580B (da) 1968-09-16
FR1450030A (fr) 1966-08-19
NL6512860A (da) 1966-04-06
CH463688A (fr) 1968-10-15
BE670511A (da) 1966-04-05

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Date Code Title Description
AS Assignment

Owner name: CELANESE CORPORATION A DE CORP

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FIBER INDUSTRIES INC;REEL/FRAME:004239/0763

Effective date: 19841230