US3509598A - Spinneret pack assembly - Google Patents

Spinneret pack assembly Download PDF

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Publication number
US3509598A
US3509598A US631418A US3509598DA US3509598A US 3509598 A US3509598 A US 3509598A US 631418 A US631418 A US 631418A US 3509598D A US3509598D A US 3509598DA US 3509598 A US3509598 A US 3509598A
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US
United States
Prior art keywords
spinneret
polymer
housing
assembly
plate
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
US631418A
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English (en)
Inventor
Paul V M Van Den Biggelaar
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.)
Akzona Inc
Original Assignee
American Enka Corp
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 American Enka Corp filed Critical American Enka Corp
Application granted granted Critical
Publication of US3509598A publication Critical patent/US3509598A/en
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
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/08—Supporting spinnerettes or other parts of spinnerette packs
    • 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

Definitions

  • This invention relates to new and useful apparatus for melt spinning synthetic filaments, fibers and yarns. More specifically, the invention relates to a spinneret assembly or pack used for the melt spinning of filaments, threads and yarns from thermoplastic materials such as polyamides, polyesters, polyolefins, glass, etc., and visualizes several novel improvements over apparatus known in the art which comprises a housing, a spinneret plate provided with shape imparting orifices supported by an outwardly extending shoulder portion of the housing, and wherein the spinneret plate, in turn, supports a distribution plate, polymer filter screens, supporting plates, etc., wherein polymer pressures are directly and indirectly exerted on one single housing shoulder which is adapted to support the plate, etc.
  • a spinneret assembly or pack used for the melt spinning of filaments, threads and yarns from thermoplastic materials such as polyamides, polyesters, polyolefins, glass, etc.
  • the apparatus of the invention embodies improvements to that apparatus as shown in US. Patent No. 2,871,511.
  • This patent depicts melt spinningapparatus comprising a spinneret assembly with some or all of its internal components being capable of limited relative movement when under the effect of polymer pressure. This is a unique approach to prevent polymer leakage in that the hydraulics of the liquid polymer within the pack supposedly act to close olf the joints between the various components held in the pack.
  • the present invention provides novel structure which avoids concentration of pressures that are encountered when spinning highly viscous polymers. Perhaps. more precisely, the construction avoids a pressure concentration at any one point or segment of the spinneret housing or any one assmebly component that is contained by the housing.
  • the invention contemplates a spinneret pack assembly for spinning highly viscous polymers wherein the distribution plate rests on a second flange located above a lower flange provided for the spinneret plate, per se. Both flanges are provided in the inner wall of the housing and with such an embodiment, the second flange absorbs approximately half the polymer pressure previously exerted on the single flange supporting all the spinneret components including the perforated platen With the present invention, pressures now exerted on the distribution plate are practically of the same order of magnitude of those polymer pressures being exerted on the spinneret plate.
  • thetotal force exerted on the lower flange (and on the spinneret plate supported thereby) is much smaller than when all the pressure forces must be absorbed by a single lower flange as is characteristic of the prior art. Accordingly, a more uniform force distribution is attained.
  • the slide extends across the upper surface of the pack lid and through two opposed grooves in the side wall of the spinneret housing.
  • FIGURE 1 shows the spinneret pack assembly in cross section
  • FIGURE 2 showsthe assembly as FIGURE 1 in planned view and with particular emphasis on the unique lid locking means.
  • reference numeral 1 refersto the spinneret packhousing provided with lower flange 2 on which spinneret plate 3 (having spinneret orifices 4) is positioned.
  • Distribution plate ,5 is positioned immediately above spinneret plate 3 and is provided with several polymer distribution channels 6 machined therein. Theplate is seated on secondfla nge 7 machined into the inner wall of housing 1.
  • Filter pack 8 is adapted for positioning on the top of distribution plate. 5.
  • Outwardly extending shoulder-s10 of pack lid 9 areadapted to rest on housing 1. Lid 9 is provided with conduits 12 for themolten polymer being introduced to thespinneret assembly.
  • Feed conduit 12 is connected to a polymer flow line 13 which passes through aheated jacket to a source of liquid polymer. supply (not shown).
  • Polymer line 13 is made conveniently detachable from the spinneret assembly in order that the entire assembly can be. removed.
  • Lid 9 is provided with two lugs that are adapted to fit in grooves 11 of the housing in orderto complete sealing of the apparatus.
  • the lid is retained infhousing 1 by means 1 of slide 15 which extends across the upper faceof the. lid. and through twoopposed grooves 16 and the top wall :of t the housing.
  • The, joint between .ipolymer line 13 andicou duit 12 can "be sealed in. any convenientmanner, for extwo triangularly shapec. gaskets 20 which act to complete sealing within the assembly when influenced by the polymer pressure.
  • An improved spinneret assembly for melt spinning synthetic filaments, fibers and threads comprising in combination? (a) a housing with cover lid; said housing. having an inner wallwithupper'andilower annular flange means extending. therefrom,
  • said distribution plate being greater in diameter than i i said spinneret plate and having a plurality of polymer flow channels passing completely therethrough

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US631418A 1966-04-27 1967-04-17 Spinneret pack assembly Expired - Lifetime US3509598A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6605607A NL6605607A (enrdf_load_stackoverflow) 1966-04-27 1966-04-27

Publications (1)

Publication Number Publication Date
US3509598A true US3509598A (en) 1970-05-05

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ID=19796412

Family Applications (1)

Application Number Title Priority Date Filing Date
US631418A Expired - Lifetime US3509598A (en) 1966-04-27 1967-04-17 Spinneret pack assembly

Country Status (2)

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US (1) US3509598A (enrdf_load_stackoverflow)
NL (1) NL6605607A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4572521A (en) * 1984-08-23 1986-02-25 Kimberly-Clark Corporation T-Seal for polymeric extrusion system
US4648826A (en) * 1984-03-19 1987-03-10 Toray Industries, Inc. Melt-spinning apparatus
US4681522A (en) * 1984-08-22 1987-07-21 Barmag Ag Melt spinning apparatus
US4698009A (en) * 1985-05-31 1987-10-06 Societa' Cavi Pirelli S.P.A. Granulator for cross-linkable plastic

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2045722A (en) * 1932-08-26 1936-06-30 Du Pont Rayon Co Manufacture of thread
FR1458898A (fr) * 1964-12-18 1966-11-10 Onderzoekings Inst Res Garniture de filage à utiliser pour la filature par fusion

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2045722A (en) * 1932-08-26 1936-06-30 Du Pont Rayon Co Manufacture of thread
FR1458898A (fr) * 1964-12-18 1966-11-10 Onderzoekings Inst Res Garniture de filage à utiliser pour la filature par fusion

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4648826A (en) * 1984-03-19 1987-03-10 Toray Industries, Inc. Melt-spinning apparatus
US4681522A (en) * 1984-08-22 1987-07-21 Barmag Ag Melt spinning apparatus
US4572521A (en) * 1984-08-23 1986-02-25 Kimberly-Clark Corporation T-Seal for polymeric extrusion system
US4698009A (en) * 1985-05-31 1987-10-06 Societa' Cavi Pirelli S.P.A. Granulator for cross-linkable plastic

Also Published As

Publication number Publication date
NL6605607A (enrdf_load_stackoverflow) 1967-03-28

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