US2841821A - Melt spinning apparatus with removable spinning assembly - Google Patents

Melt spinning apparatus with removable spinning assembly Download PDF

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Publication number
US2841821A
US2841821A US336159A US33615953A US2841821A US 2841821 A US2841821 A US 2841821A US 336159 A US336159 A US 336159A US 33615953 A US33615953 A US 33615953A US 2841821 A US2841821 A US 2841821A
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US
United States
Prior art keywords
spinning
unit
pump
removable
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
US336159A
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English (en)
Inventor
John W Phipps
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Application granted granted Critical
Publication of US2841821A publication Critical patent/US2841821A/en
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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
    • D01D4/08—Supporting spinnerettes or other parts of spinnerette packs

Definitions

  • I provide an improved melt spinning apparatus wherein the pump and the spinning pack form a unit, to which the molten filament forming material is fed from the melting zone, said unit being removable from the spinning apparatus for cleaning and replacement of the components.
  • the removable unit comprising pump and spinning pack
  • the removable unit is supported on and located by shoulders or ledges within the spinning apparatus and is secured in position by a single clamping screw, the tightening of which is sufiicient to make the joint, connecting the inlet side of the pump to the melting zone, fluid tight.
  • a single clamping screw the tightening of which is sufiicient to make the joint, connecting the inlet side of the pump to the melting zone, fluid tight.
  • the drive to the pump in the apparatus of this invention, must be made and positioned to allow removal of the pump/ spinning pack unit. This is done by driving the pump by a shaft which can be retracted during the withdrawal of the unit.
  • the drawing is a diagrammatic section through part of a spinning apparatus showing the removable pump pack "ice unit supported on the ledge 2 in the spinning head 3.
  • a duct 4 leads molten polymer from a melting unit (not shown) via a cock 5 and a gland 6 to a spinning pump 7.
  • the joint is made fluid tight by pressure exerted by the clamp screw 8. Heating of the apparatus is obtained by circulating hot vapour through the spaces 9 and the heat is retained by the lagging 10.
  • the pump is driven by the retractable shaft 11 through the key 12.
  • a duct 13 connects the pump outlet with the sand pack 14 resting on a gauze 15 supported by a rigid plate 16.
  • a spinneret 17 is held in place by a support plate 18 and items 15, 16, 17 and 18 are held rigidly in place in the removable unit by a ring of bolts 19.
  • the drawing also shows a removal tool 20 which fits into the socket 21 in the removable unit.
  • the clamp screw 8 When an apparatus of the type shown in the drawing is in use the clamp screw 8 is locked so that pressure is exerted on the joint 6.
  • the stop cock 5 When it is desired to remove the removable unit for cleaning or dismantling, the stop cock 5 is closed, the clamp screw 8 is loosened and the shaft 11 withdrawn. Removal of the lagging 10A enables the whole unit to be lifted from the spinning head by means of the removal tool 20.
  • the removable unit in the drawing is lifted upwards for removal. It will'be appreciated that in different types of apparatus the unit may move sideways or if desired downwards for removal and may be supported otherwise than on a ledge. Similarly the clamp screw may be replaced by any other known locking means and the feed duct and the pump driving shaft fitted in a wide variety of ways.
  • the apparatus of this invention is particularly suitable for use where one melting unit feeds many spinning heads. Any spinning head can be taken out of action by stopping the flow of molten polymer thereto and the ease with which the removable unit of our invention can be taken out and replaced is a great asset.
  • the pump used is a gear pump
  • other pumps may be used if desired.
  • a screw pump for example for the extrusion of certain filaments, it may be possible to use a screw pump.
  • the apparatus of this invention may be used in melt spinning any thermoplastic filament forming material. It is particularly suited to the melt spinning of those materials with highly viscous melts e. g. nylon and the highly polymeric polymethylene terephthalates, since these materials have a great tendency to leak at any joints, under the high pressures used in extrusion.
  • the temperature of the spinning pack components, particularly the spinneret, and the gear pump can be kept uniformly hot without difiiculty.
  • the fact that the pump can be completely enclosed by lagging prevents heat losses which have occurred with apparatus of the prior art.
  • a melt spinning apparatus comprising a spinning unit, means defining an upwardly opening well for remov- 3 ably receiving and supporting said unit, means having communication, and means detachably connected with an outlet communicating with said well for supplying said pump for driving the latter.
  • molten filament forming material to said unit means sub- References Cited in the file of this patent stantially surrounding said well for heating the unit supported therein, said spinning unit comprising a pump 5 UNITED STATES PATENTS for pumping'th'e material from said supplying means 2,217,743 Greenewalt Oct. 15, 1940 and a spinning pack through which the materialis pumped 2,341,731 MacGrego-r et al. Feb.
  • said unit providing an inlet for said 2,601,642 Stammer et al June 24, 1952 pump, clamping means for securing said unit to said Well 2,692,405 Gayler Oct. 26, 1954 defining means with said inlet and outlet in fluid-tight 10 2,707,306 Weber et al. May 3, 1955

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US336159A 1952-02-19 1953-02-10 Melt spinning apparatus with removable spinning assembly Expired - Lifetime US2841821A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB310466X 1952-02-19

Publications (1)

Publication Number Publication Date
US2841821A true US2841821A (en) 1958-07-08

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ID=10317145

Family Applications (1)

Application Number Title Priority Date Filing Date
US336159A Expired - Lifetime US2841821A (en) 1952-02-19 1953-02-10 Melt spinning apparatus with removable spinning assembly

Country Status (4)

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US (1) US2841821A (en(2012))
BE (1) BE517791A (en(2012))
CH (1) CH310466A (en(2012))
FR (1) FR1071338A (en(2012))

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3050774A (en) * 1957-09-03 1962-08-28 Du Pont Spinneret assembly
US3123858A (en) * 1964-03-10 Heated
US3129272A (en) * 1960-05-19 1964-04-14 British Nylon Spinners Ltd Melt-spinning synthetic polymer filaments
US3243849A (en) * 1964-05-19 1966-04-05 Du Pont Screen changing
US3655314A (en) * 1969-02-19 1972-04-11 Barmag Barmer Maschf Spinning apparatus composed of modular spinning units on common heating beam
US3767347A (en) * 1971-06-19 1973-10-23 G Landoni Modular unit for the spinning of synthetic fibers
US3817672A (en) * 1971-04-27 1974-06-18 Barmag Barmer Maschf Spinning apparatus with vaporous heating jacket
US4035127A (en) * 1973-06-22 1977-07-12 Toray Industries, Inc. Melt spinning apparatus
US4437827A (en) 1981-04-03 1984-03-20 Davy Mckee Aktiengesellschaft Spinning manifold with serial nozzle blocks
US5354529A (en) * 1989-11-27 1994-10-11 Barmag Ag Melt spinning apparatus and method
US6083432A (en) * 1996-09-04 2000-07-04 Barmag Ag Melt spinning apparatus
US6101698A (en) * 1996-04-30 2000-08-15 E. I. Du Pont De Nemours And Company Arrangement for sealing a closed production system
US20220403556A1 (en) * 2021-06-21 2022-12-22 Fratelli Ceccato Milano S.R.L. Multi-row coaxial melt-blown system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1131844B (de) * 1957-09-25 1962-06-20 Barmag Barmer Maschf Spulenspinnmaschine fuer endlose, nach dem Schmelz- oder Trockenspinn-verfahren hergestellte kuenstliche Faeden

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2217743A (en) * 1939-03-28 1940-10-15 Du Pont Apparatus
US2341731A (en) * 1942-03-07 1944-02-15 Gen Motors Corp Wire coating apparatus
US2601642A (en) * 1950-02-07 1952-06-24 Continental Can Co Method and apparatus for regulating the size and form of solder pellets
US2692405A (en) * 1949-06-30 1954-10-26 American Viscose Corp Melt spinning apparatus
US2707306A (en) * 1952-08-22 1955-05-03 Celanese Corp Melt spinning apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2217743A (en) * 1939-03-28 1940-10-15 Du Pont Apparatus
US2341731A (en) * 1942-03-07 1944-02-15 Gen Motors Corp Wire coating apparatus
US2692405A (en) * 1949-06-30 1954-10-26 American Viscose Corp Melt spinning apparatus
US2601642A (en) * 1950-02-07 1952-06-24 Continental Can Co Method and apparatus for regulating the size and form of solder pellets
US2707306A (en) * 1952-08-22 1955-05-03 Celanese Corp Melt spinning apparatus

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123858A (en) * 1964-03-10 Heated
US3050774A (en) * 1957-09-03 1962-08-28 Du Pont Spinneret assembly
US3129272A (en) * 1960-05-19 1964-04-14 British Nylon Spinners Ltd Melt-spinning synthetic polymer filaments
US3243849A (en) * 1964-05-19 1966-04-05 Du Pont Screen changing
US3655314A (en) * 1969-02-19 1972-04-11 Barmag Barmer Maschf Spinning apparatus composed of modular spinning units on common heating beam
US3817672A (en) * 1971-04-27 1974-06-18 Barmag Barmer Maschf Spinning apparatus with vaporous heating jacket
US3767347A (en) * 1971-06-19 1973-10-23 G Landoni Modular unit for the spinning of synthetic fibers
US4035127A (en) * 1973-06-22 1977-07-12 Toray Industries, Inc. Melt spinning apparatus
US4437827A (en) 1981-04-03 1984-03-20 Davy Mckee Aktiengesellschaft Spinning manifold with serial nozzle blocks
US5354529A (en) * 1989-11-27 1994-10-11 Barmag Ag Melt spinning apparatus and method
US6101698A (en) * 1996-04-30 2000-08-15 E. I. Du Pont De Nemours And Company Arrangement for sealing a closed production system
US6083432A (en) * 1996-09-04 2000-07-04 Barmag Ag Melt spinning apparatus
US20220403556A1 (en) * 2021-06-21 2022-12-22 Fratelli Ceccato Milano S.R.L. Multi-row coaxial melt-blown system
US12043920B2 (en) * 2021-06-21 2024-07-23 Fratelli Ceccato Milano S.R.L. Multi-row coaxial melt-blown system

Also Published As

Publication number Publication date
FR1071338A (fr) 1954-08-30
CH310466A (de) 1955-10-31
BE517791A (en(2012))

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