EP0547700A1 - Verteilerscheibe für geschmolzene thermoplastische Materialien in einem Spinnkopf - Google Patents

Verteilerscheibe für geschmolzene thermoplastische Materialien in einem Spinnkopf Download PDF

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Publication number
EP0547700A1
EP0547700A1 EP92203901A EP92203901A EP0547700A1 EP 0547700 A1 EP0547700 A1 EP 0547700A1 EP 92203901 A EP92203901 A EP 92203901A EP 92203901 A EP92203901 A EP 92203901A EP 0547700 A1 EP0547700 A1 EP 0547700A1
Authority
EP
European Patent Office
Prior art keywords
disc
spinning
thermoplastic material
distributor disc
molten thermoplastic
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.)
Ceased
Application number
EP92203901A
Other languages
English (en)
French (fr)
Inventor
Paolo Prodi
Daniele Pasotti
Mauro Pini
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.)
Savio SpA
Savio Macchine Tessili SpA
Original Assignee
Savio SpA
Savio Macchine Tessili SpA
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 Savio SpA, Savio Macchine Tessili SpA filed Critical Savio SpA
Publication of EP0547700A1 publication Critical patent/EP0547700A1/de
Ceased 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
    • 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
    • D01D1/06—Feeding liquid to the spinning head

Definitions

  • This invention relates to a distributor disc for molten thermoplastic material fed to a spinning head for spinning plastic masses, to obtain synthetic yarn.
  • the mass to be spun is fed onto said distributor disc, so that in flowing over its conical crown-like surface it is distributed uniformly by a plurality of concave radial grooves in spoke arrangement, which converge with, and expel the molten thermoplastic material into, grooves in the outer circumferential edge of the disc.
  • thermoplastic masses such as polyesters, polyamides etc.
  • the mass of thermoplastic synthetic material to form the yarn is preferably fed by an extrusion press along a central channel to the inlet of a spinning head, from which the yarn emerges through sized nozzles to be collected on winding devices.
  • the starting polymer in the solid state passes initially through a heating process in which it is melted to the liquid state, after which it is fed by an extrusion press or any other suitable member to the actual spinning block.
  • This spinning block comprises in practice a disc for distributing the molten polymer entering the underlying filter block.
  • this molten polymer distributor disc has substantial drawbacks, related to the formation of static molten masses, ie residual material which solidifies in the corners between the wall of the spinning block and the surface of the distributor disc.
  • the residual material which solidifies during spinning on the one hand contributes hydrodynamic resistance to the flow of the molten polymer, and on the other hand after a more or less lengthy period of operation reduces the passage cross-section, to finally block the spinning process.
  • Said distributor disc for thermoplastic material comprises a conical crown-like surface in which there are provided a plurality of concave radial grooves with their cross-section gradually increasing from the centre to the periphery at the grooved outer circumferential edge.
  • Said concave radial grooves are arranged as spokes uniformly distributed over the conical crown-like surface of the disc, each concave radial groove converging with and opening into a respective groove in the grooved outer circumferential edge.
  • Said grooves in the outer circumferential edge are of substantially rectangular shape with sufficiently rounded corners.
  • FIG. 1 The figure of the single accompanying drawing shows a schematic section on a vertical axis though a spinning block comprising the distributor disc for molten thermoplastic material of the present invention.
  • the polymer in the molten liquid state is fed under pressure in the direction 9 into the central entry duct 3 of the spinning block 1. All this is well known to the expert of the art. As is also known, the path for the molten polymer entering the spinning block 1 must be made fluid-tight by gaskets 11 of suitable material.
  • the molten polymer flows under pressure through the central duct 3 in the block 7 and onto the conical crown-like surface 6 of the distributor disc 8. Said molten polymer is distributed circumferentially and flows uniformly along the direction 2 within the circumferential space between the surfaces 6 and 4.
  • the molten polymer is obliged to enter concave radial grooves 5 in spoke arrangement, said radial grooves 5 being concave and with their cross-section gradually increasing in size from the centre of the conical surface 6 to the periphery at the grooved outer circumferential edge of the distributor disc 8.
  • the cross-section gradually increases in size in order to maintain the circumferential passage section for the molten polymer substantially constant.
  • This latter flows uniformly into the discoidal space 14, to pass through the filter block 10 and then into the underlying discoidal space 14, from which it leaves to pass through the plate 15 via the sized passage holes 18, from which it emerges to flow firstly into the discoidal space 20 and then through the sized nozzles 16 in the plate 19.
  • the plate 19 which represents the actual spinning element, the molten polymer leaves in the direction 12 in its final spun yarn form to be collected on an underlying winding unit (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP92203901A 1991-12-19 1992-12-12 Verteilerscheibe für geschmolzene thermoplastische Materialien in einem Spinnkopf Ceased EP0547700A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI913420 1991-12-19
ITMI913420A IT1252556B (it) 1991-12-19 1991-12-19 Disco distributore di materiale termoplastico fuso per una testa di filatura

Publications (1)

Publication Number Publication Date
EP0547700A1 true EP0547700A1 (de) 1993-06-23

Family

ID=11361386

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92203901A Ceased EP0547700A1 (de) 1991-12-19 1992-12-12 Verteilerscheibe für geschmolzene thermoplastische Materialien in einem Spinnkopf

Country Status (6)

Country Link
EP (1) EP0547700A1 (de)
KR (1) KR930013229A (de)
CN (1) CN1078002A (de)
IT (1) IT1252556B (de)
MX (1) MX9207432A (de)
ZA (1) ZA929782B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4417815C1 (de) * 1994-05-20 1995-10-12 Inventa Ag Filter für Polymerlösungen und Polymerschmelzen
DE19607103B4 (de) * 1996-02-24 2006-01-26 Zimmer Ag Spinnpack mit Sandfilter
JP2011195989A (ja) * 2010-03-19 2011-10-06 Toray Ind Inc 紡糸パックおよびフィラメント糸の製造方法
WO2023242680A1 (en) * 2022-06-14 2023-12-21 Aladdin Manufacturing Corporation Flow modifying spin pack and methods for using the flow modifying spin pack

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2660369B1 (de) * 2010-12-27 2016-05-18 Toray Industries, Inc. Zusammengesetzte spinndüse und verfahren zur herstellung von verbundfasern
JP6793054B2 (ja) * 2017-02-10 2020-12-02 住友化学株式会社 ポリマーフィルタおよびポリマーフィルムの製造方法
CN108950796B (zh) * 2018-06-15 2020-12-04 阿斯福特纺织（漳州）有限公司 一种高品质涤纶面料的成型工艺
CN117166073A (zh) * 2023-08-21 2023-12-05 新凤鸣集团股份有限公司 一种可定制化的多丽竹节丝的生产方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3762850A (en) * 1971-07-26 1973-10-02 Akzona Inc Spinning head

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3762850A (en) * 1971-07-26 1973-10-02 Akzona Inc Spinning head

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED Section Ch, Week 8303, 2 March 1983 Derwent Publications Ltd., London, GB; Class A, AN 83-06904K & SU-A-912 781 (SYNTH FIBRES RES) 17 March 1982 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4417815C1 (de) * 1994-05-20 1995-10-12 Inventa Ag Filter für Polymerlösungen und Polymerschmelzen
DE19607103B4 (de) * 1996-02-24 2006-01-26 Zimmer Ag Spinnpack mit Sandfilter
JP2011195989A (ja) * 2010-03-19 2011-10-06 Toray Ind Inc 紡糸パックおよびフィラメント糸の製造方法
WO2023242680A1 (en) * 2022-06-14 2023-12-21 Aladdin Manufacturing Corporation Flow modifying spin pack and methods for using the flow modifying spin pack

Also Published As

Publication number Publication date
KR930013229A (ko) 1993-07-21
MX9207432A (es) 1993-07-01
IT1252556B (it) 1995-06-19
CN1078002A (zh) 1993-11-03
ITMI913420A1 (it) 1993-06-19
ZA929782B (en) 1993-06-23
ITMI913420A0 (it) 1991-12-19

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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Designated state(s): AT BE CH DE DK ES FR GB GR IE LI LU MC NL PT SE

17P Request for examination filed

Effective date: 19931109

17Q First examination report despatched

Effective date: 19940926

18R Application refused

Effective date: 19950401