US2217743A - Apparatus - Google Patents

Apparatus Download PDF

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Publication number
US2217743A
US2217743A US264535A US26453539A US2217743A US 2217743 A US2217743 A US 2217743A US 264535 A US264535 A US 264535A US 26453539 A US26453539 A US 26453539A US 2217743 A US2217743 A US 2217743A
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US
United States
Prior art keywords
spinning
melting
heating
unit
assembly
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
US264535A
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English (en)
Inventor
Greenewalt Crawford Hallock
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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
Priority to NL58719D priority Critical patent/NL58719C/xx
Priority to BE465269D priority patent/BE465269A/xx
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to US264535A priority patent/US2217743A/en
Application granted granted Critical
Publication of US2217743A publication Critical patent/US2217743A/en
Priority to FR924419D priority patent/FR924419A/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/04—Melting filament-forming substances

Definitions

  • This invention relates" to the production of yarns, filaments, ribbons, -and the like by the melt spinning of organic filament-forming compositions.
  • this invention will be. discussed in terms of the melt spinning of fiberforming synthetic linear polyamides (superpolyamides) such as may be prepared by the condensation reactions described in U. '5.
  • Patents Nos. 2,071,250, 2,071,251, 2,071,253 and 2,130,948 for convenience, these fiber-forming synthetic linear polyamides-are hereinafter 'referred to as polyamides.
  • melt spinning of such compositions is a new art and presents many problemssince it is necessary not only to operate continuously, efficiently, and economically but also to produce products 01' very uniform properties, particularly in the case of textile yarns where uniform denier, uniform dye' aflinity and uniform physical properties are very important.
  • a besettingproblem in the operation of a plant for the melt spinningot a textile yarn arises from the necessity of heating the melting and 5 spinning apparatus to ahigh temperature before the actual spinning operation can be started and the high temperature at which the apparatus must be maintained throughout the spinning operation.
  • the problem is presented by 30 the time required to put the spinning apparatus into service, to take it out of service, to efiect repairs and/or change of production. It is necessary to carefully maintain the apparatus at these high temperatures with little variation.
  • the above-mentioned objectionable delays and interruptions can be avoided by combining a melting unit and spinning unit in a single assembly which may be interchangeably removed from and connected to a heating shell fixed in a spinning position, as well as to an auxiliary heating shell which is adapted to heat the melting and spinning assembly to operating temperature.
  • Figure 1 is a cross-sectional view of an apparatus illustrative of this invention.
  • Figure 2 is a side elevational view, with parts shown in section, of the apparatus shown in Figure 1 with the melting and spinning assembly removed from the heating shell.
  • the spinning apparatus shown in Figure 1 comprises two parts, that represented generally by I, which is a heating shell, and that represented generally by 2, which is a removable melting and spinning assembly.
  • the heating shell I comprises a rigid shell 4, tubular heating coils 6, and insulating material 8.
  • the coils 3 are supplied with a heating medium such as super-heated steam or Dowtherm by means of inlet pipe l0 and outlet pipe I2.
  • the heating shell I is fixed in the spinning position base M.
  • the base I4 and the shell I are provided with an opening I6 for the pump drive shaft it! which can be uncoupled from the metering pump of the spinning assembly and be withdrawn from the base and shell.
  • the rigid shell- 4 is provided with a flange 20 containing holes to receive bolts 22 of the melting and spinning assembly for rigid mounting of parts I and 2 with each other. An opening is shown at 24 for the withdrawal of the spun yarns.
  • the melting and spinning assembly 2 comprises a hopper 30 for the solid flakes of file-- merit-forming composition, a melting unit 32, a,
  • Flakes of filament-forming composition may be passed into hopper 30 through opening 40. While in operation the opening 40 is closed by cover 42.
  • the top of hopper 30 is provided with eye bolts 44 by means of which the melting and spinning assembly may be lifted.
  • the hopper 30' is connected to the frame 48 by means of bolts 46.
  • the heating or melting unit comprising coil 32,
  • the insulation 50 prevents the hopper 30 from reaching 'an elevated temperature and prematurely melting the solid filament-forming composition.
  • the melting unit 32 may be heated nected to pump 3tv by conduit 58.
  • the spinning unit 38, including spinneret 60, and the pump 36 are all held firmly in place by means of annular plate 62 which is fastened to flange 64 of frame 48 by means of bolts 66.
  • a gas inlet is shown at III and outlets at 12 and 14 to permit the maintenance of an inert atmosphere in the hopper and above the melting unit, and to remove any air or volatile impurities introduced with the solid filament-forming composition.
  • the removable melting and spinning assembly 2 is mounted in a heating shell similar in construction to that shown at I but mounted in an assembly room.
  • Solid flakes of the polyamide are introduced into the hopper I I through the opening 40 after which the cover 42 is replaced.
  • the flakes form a solid column resting on the melting unit.
  • the gas inlet is connected with a source of oxygen-free CO: or N: and the apparatus flushed out with a relatively .large rate of flow of gas.
  • the flow of gas at Ill is then reduced and the outlets l2 and 14 adjusted to permit a slow escape of gas from each.
  • the melting unit is connected with a source of heating fluid, preferably from the same source as that used in heating the auxiliary heating shell.
  • the flakes of material directly in contact with the surface of melting unit 32 melt and the molten material drains to the container 34. As the flakes melt, more flakes come into contact with the melting surface and in turn melt, thereby insuring a constant supply of moltenmaterial.
  • the gas inlets and outlets I0, 12 and 14 are closed and the inlet 52 and outlet 54 to the melting unit disconnected.
  • The-entire assembly is then lifted by means of the eye bolts 44 and transported to the already hot shell I, in the spinning room, lowered into it and fixed in position by means of the bolts 22.
  • the flow of gas through the apparatus is then reestablished by the proper connections and adjustments.
  • melting unit is again connected to the same source of heating fluid thatenters the shell through inlet ID.
  • the pump shaft "3 is then coupled with the pump mechanism to drive the pump 38.
  • Spinning is begun when the pump is in operation.
  • the molten polyamide drawn from the container 34 by the pump 35 is metered to the spinning unit 38 from which it is extruded in the form of filaments.
  • the extruded filaments are collected as a yarn bundle in anorderly manner. when it is necessary to repair or adJust the assembly, it is only necessary to disengage the pump drive shaft, disconnect the gas and heating fluid connections, remove the nuts from the bolts 22, whereupon the whole assembly can be removed and replaced by another preheated unit. Delay is thereby reduced to a minimum. If desired, the solid flake need not be added until the unit is in the spinning position since melting is soon effected with the preheated unit.
  • the invention is also applicable to the spinning of other molten organic filament-forming compositions such as the vinyl polymers, polystyrene and polyacrylic acid derivatives.
  • the filament-forming material used in the process of this invention may contain modifying agents, for example, lustre-modifying agents plasticizers, pigments and dyes, anti-oxidants, resins, etc. 7
  • a melt spinning apparatus comprising a melting unit and a spinning unit, means connecting said two units securely to each other as a melting and spinning assembly, said spinning

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US264535A 1939-03-28 1939-03-28 Apparatus Expired - Lifetime US2217743A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL58719D NL58719C (en, 2012) 1939-03-28
BE465269D BE465269A (en, 2012) 1939-03-28
US264535A US2217743A (en) 1939-03-28 1939-03-28 Apparatus
FR924419D FR924419A (fr) 1939-03-28 1946-03-25 Appareil de filage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US264535A US2217743A (en) 1939-03-28 1939-03-28 Apparatus

Publications (1)

Publication Number Publication Date
US2217743A true US2217743A (en) 1940-10-15

Family

ID=23006484

Family Applications (1)

Application Number Title Priority Date Filing Date
US264535A Expired - Lifetime US2217743A (en) 1939-03-28 1939-03-28 Apparatus

Country Status (4)

Country Link
US (1) US2217743A (en, 2012)
BE (1) BE465269A (en, 2012)
FR (1) FR924419A (en, 2012)
NL (1) NL58719C (en, 2012)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2437687A (en) * 1943-11-24 1948-03-16 Celanese Corp Melt extrusion of artificial filaments, films and the like and apparatus therefor
DE875559C (de) * 1943-11-24 1953-05-04 Camille Dreyfus Vorrichtung zum Zufuehren fester Stoffe in einen erhitzten Behaelter
US2681266A (en) * 1950-08-11 1954-06-15 Inventa Ag Melt spinning method
US2683073A (en) * 1951-08-22 1954-07-06 Du Pont Process for preventing nylon gel formation
US2692405A (en) * 1949-06-30 1954-10-26 American Viscose Corp Melt spinning apparatus
US2701755A (en) * 1950-05-20 1955-02-08 Texas Co Valve
US2707306A (en) * 1952-08-22 1955-05-03 Celanese Corp Melt spinning apparatus
US2751810A (en) * 1950-05-12 1956-06-26 Olin Mathieson Explosive loading
US2841821A (en) * 1952-02-19 1958-07-08 Ici Ltd Melt spinning apparatus with removable spinning assembly
US2867495A (en) * 1953-05-11 1959-01-06 Gen Electric Process for producing chlorotrifluoroethylene fibers
US2888711A (en) * 1950-09-01 1959-06-02 British Celanese Production of filamentary materials
US2945739A (en) * 1955-06-23 1960-07-19 Du Pont Process of melt spinning
US3189022A (en) * 1963-07-26 1965-06-15 Thomas J Melsky Method and apparatus for premelting thermoplastic adhesive materials
US3218430A (en) * 1961-06-08 1965-11-16 Konstrucktions Und Ingenieurbu Device for preparing a melt from high polymers
DE1208845B (de) * 1959-04-06 1966-01-13 Onderzoekings Inst Res Schmelzvorrichtung fuer lineare thermoplastische Polymere, insbesondere fuer die Herstellung von Faeden
US3257487A (en) * 1963-03-04 1966-06-21 Allied Chem Melt spinning of epsilon-polycaproamide filament
US3299471A (en) * 1964-04-27 1967-01-24 Hench Hans Spinning nozzle fastener
US3377466A (en) * 1965-04-05 1968-04-09 United Shoe Machinery Corp Apparatus for handling thermoplastic material
US4161391A (en) * 1978-03-14 1979-07-17 Allied Chemical Corporation Melting apparatus
US4389367A (en) * 1981-09-30 1983-06-21 Grumman Aerospace Corporation Fluid molding system
US5374120A (en) * 1993-12-06 1994-12-20 Eastman Kodak Company Modified passive liquid in-line segmented blender
US5614142A (en) * 1995-11-20 1997-03-25 Basf Corporation Process for spinning thermoplastic fibers on a grid spinning system
US5741532A (en) * 1995-11-20 1998-04-21 Basf Corporation Apparatus for introducing additives into a grid spinning system
US6056431A (en) * 1997-09-05 2000-05-02 Eastman Kodak Company Modified passive liquefier batch transition process
WO2016202541A1 (de) * 2015-06-18 2016-12-22 Kraussmaffei Technologies Gmbh Schmelzvorrichtung und verfahren zum schmelzen von schmelzbarem kunststoffmaterial, verfahren zum mischen von reaktiven kunststoffkomponenten

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1292306B (de) * 1965-12-18 1969-04-10 Glanzstoff Ag Schmelzspinnvorrichtung

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE875559C (de) * 1943-11-24 1953-05-04 Camille Dreyfus Vorrichtung zum Zufuehren fester Stoffe in einen erhitzten Behaelter
US2437687A (en) * 1943-11-24 1948-03-16 Celanese Corp Melt extrusion of artificial filaments, films and the like and apparatus therefor
US2692405A (en) * 1949-06-30 1954-10-26 American Viscose Corp Melt spinning apparatus
US2751810A (en) * 1950-05-12 1956-06-26 Olin Mathieson Explosive loading
US2701755A (en) * 1950-05-20 1955-02-08 Texas Co Valve
US2681266A (en) * 1950-08-11 1954-06-15 Inventa Ag Melt spinning method
US2888711A (en) * 1950-09-01 1959-06-02 British Celanese Production of filamentary materials
US2683073A (en) * 1951-08-22 1954-07-06 Du Pont Process for preventing nylon gel formation
US2841821A (en) * 1952-02-19 1958-07-08 Ici Ltd Melt spinning apparatus with removable spinning assembly
US2707306A (en) * 1952-08-22 1955-05-03 Celanese Corp Melt spinning apparatus
US2867495A (en) * 1953-05-11 1959-01-06 Gen Electric Process for producing chlorotrifluoroethylene fibers
US2945739A (en) * 1955-06-23 1960-07-19 Du Pont Process of melt spinning
DE1208845B (de) * 1959-04-06 1966-01-13 Onderzoekings Inst Res Schmelzvorrichtung fuer lineare thermoplastische Polymere, insbesondere fuer die Herstellung von Faeden
US3218430A (en) * 1961-06-08 1965-11-16 Konstrucktions Und Ingenieurbu Device for preparing a melt from high polymers
US3257487A (en) * 1963-03-04 1966-06-21 Allied Chem Melt spinning of epsilon-polycaproamide filament
US3189022A (en) * 1963-07-26 1965-06-15 Thomas J Melsky Method and apparatus for premelting thermoplastic adhesive materials
US3299471A (en) * 1964-04-27 1967-01-24 Hench Hans Spinning nozzle fastener
US3377466A (en) * 1965-04-05 1968-04-09 United Shoe Machinery Corp Apparatus for handling thermoplastic material
US4161391A (en) * 1978-03-14 1979-07-17 Allied Chemical Corporation Melting apparatus
US4389367A (en) * 1981-09-30 1983-06-21 Grumman Aerospace Corporation Fluid molding system
US5374120A (en) * 1993-12-06 1994-12-20 Eastman Kodak Company Modified passive liquid in-line segmented blender
US5614142A (en) * 1995-11-20 1997-03-25 Basf Corporation Process for spinning thermoplastic fibers on a grid spinning system
US5741532A (en) * 1995-11-20 1998-04-21 Basf Corporation Apparatus for introducing additives into a grid spinning system
US6056431A (en) * 1997-09-05 2000-05-02 Eastman Kodak Company Modified passive liquefier batch transition process
WO2016202541A1 (de) * 2015-06-18 2016-12-22 Kraussmaffei Technologies Gmbh Schmelzvorrichtung und verfahren zum schmelzen von schmelzbarem kunststoffmaterial, verfahren zum mischen von reaktiven kunststoffkomponenten
US20180169899A1 (en) * 2015-06-18 2018-06-21 Kraussmaffei Technologies Gmbh Melting device and method for melting meltable plastic material, method for mixing reactive plastic components
US11104039B2 (en) 2015-06-18 2021-08-31 Kraussmaffei Technologies Gmbh Melting device and method for melting meltable plastic material, method for mixing reactive plastic components

Also Published As

Publication number Publication date
NL58719C (en, 2012)
FR924419A (fr) 1947-08-05
BE465269A (en, 2012)

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