EP0195156A2 - Herstellung von vororientiertem Monofilgarn - Google Patents

Herstellung von vororientiertem Monofilgarn Download PDF

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Publication number
EP0195156A2
EP0195156A2 EP85306585A EP85306585A EP0195156A2 EP 0195156 A2 EP0195156 A2 EP 0195156A2 EP 85306585 A EP85306585 A EP 85306585A EP 85306585 A EP85306585 A EP 85306585A EP 0195156 A2 EP0195156 A2 EP 0195156A2
Authority
EP
European Patent Office
Prior art keywords
take
monofilament yarn
spinneret
spin
yarn
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.)
Withdrawn
Application number
EP85306585A
Other languages
English (en)
French (fr)
Other versions
EP0195156A3 (de
Inventor
Cesar Sumar
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0195156A2 publication Critical patent/EP0195156A2/de
Publication of EP0195156A3 publication Critical patent/EP0195156A3/de
Withdrawn legal-status Critical Current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
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching

Definitions

  • This invention relates to the manufacture of pre-oriented monofilament yarn.
  • N.O.Y. non-oriented-yarn
  • M.O.Y. medium-oriented-yarn
  • the difference between each one of the existing systems lies in the "take-up speed" of the yarn which is extruded in a plastic state (amorphous condition) from a spinneret, and in the "drawn grade" applied to the yarn.
  • a process for manufacturing monofilament yarn of synthetic material comprisising hot extrusion, (in a spinning beam of conventional type used to produce multifilament yarns) of spinning material through a spinneret and downwardly through a cooling chamber in which cooling air is directed at the material to form it into filamentary form, taking-up monofilament yarn on a take-up device, and applying a spin-finish material to the spinning material at a position intermediate the spinneret and the take-up device :
  • a conventional spin beam apparatus is used to manufacture yarns of synthetic fiber, for instance, polyamides, polyester or polyprolylene, and comprises a conventional extruder system 1 which ends in a spinneret 2 having several calibrated holes (not shown in order to clarify the drawing). These holes, in number of 2 or-more, have a diameter which are in the range between 0.15 and 0.30 mm.
  • the apparatus of Fig.l may comprise a Zimmer spin beam, with a Barmag extruder and a conventional Cognosini take-up machine of the type used, up to now, only in the manufacture of multi-filament yarns.
  • the melted plastics material flows through the holes of the spinneret 2 and the filaments 3 (of which only four are shown),in an amorphous state flow downward through the inside of a cooling chamber 4 which receives a current of cooling air A, flowing through a diffuser screen 5, in order to cool the filaments and to produce the required crystallisation of the synthetic material.
  • nozzles 6 are located at a certain distance below the spinneret 2, to provide each filament bundle with the required amount of a spin-finish emulsion.
  • the nozzles 6 are located at a distance between 300 and 1700 mm below the spinneret 2 which, in turn, is positioned at a height in the range of 5000 to 8000 mm above a take-up device 9.
  • the take-up device 9, of a constant take-up speed type (or of any other conventional type) takes up multi- filament yarn at a speed v in the range of 400 mts./min. or more.
  • Fig.2 parts corresponding to those shown in Fig.l are designated by the same reference numerals, and will not therefore be described in detail again.
  • the spin beam of Fig.l is schematically shown from a side view, and includes modifications to produce monofilament yarns of the P.O.Y. type, using synthetic materials, such as polyamide 6 or polyamide 66, polypropylene or polyester.
  • the spinneret 2a has an area in the range of .600 - 1000 mm 2 and is provided with a single hole (not shown) with a diameter about 0.40 mm.
  • the synthetic material is extruded through this hole, producing threads 3b (of which only 3 are shown) which descend along the inside of chamber 4, where they are cooled in a conventional way by means of the air flow A.
  • Threads 3b continue descending through tube 8, coming out at the bottom end 8a of tube 8.
  • Conventional thread guides 7a are located below the end 8a of tube 8, in order to receive threads 3b and guide them to corresponding take-up bobbins 9a.
  • the nozzles 6 are located, conveniently, between the bottom end 8a of the tube 8 and the location of the thread guides 7a, where the threads of P.O.Y. monofilament yarn change direction to enter the bobbins of the take-up device 9a.
  • the trials performed enabled the inventor to discover that the most convenient position for the nozzles 6, in order to moisten the P.O.Y. monofilament yarns with spin-finish emulsions, is located at a distance between 1500 and 2500 mm above the horizontal shaft of the take-up device 9a, that is to say, between 2500 and 6500 mm below the spinneret. Up to the present time, this has not been considered possible or practical with existing apparatus.
  • the following Table illustrates some of the results obtained when producing monofilament yarns of the P.O.Y. type using the process of the invention, with several kinds of spinneret and different distances of the spin-finish nozzles (6) with respect to the spinneret. Also, the number of breaks in 600 kms of yarn (about 1 kg of yarn) and the proportion of oil (by weight) in the emulsion are shown.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP85306585A 1985-03-21 1985-09-17 Herstellung von vororientiertem Monofilgarn Withdrawn EP0195156A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US71448985A 1985-03-21 1985-03-21
US714489 1985-03-21

Publications (2)

Publication Number Publication Date
EP0195156A2 true EP0195156A2 (de) 1986-09-24
EP0195156A3 EP0195156A3 (de) 1988-01-07

Family

ID=24870251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85306585A Withdrawn EP0195156A3 (de) 1985-03-21 1985-09-17 Herstellung von vororientiertem Monofilgarn

Country Status (3)

Country Link
EP (1) EP0195156A3 (de)
MX (1) MX162854B (de)
ZA (1) ZA86951B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6669993B2 (en) 2000-09-19 2003-12-30 Honeywell International Inc. High speed yarn finish application

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB852351A (en) * 1956-05-18 1960-10-26 Snia Viscosa Improvements in or relating to processes and apparatus for melt-spinning of synthetic linear polyamides
US3353210A (en) * 1965-12-09 1967-11-21 Du Pont Rectangular convergence guide
FR2400573A1 (fr) * 1977-08-17 1979-03-16 Monsanto Co Procede de filage a haute productivite
FR2540893B1 (fr) * 1983-02-16 1985-11-08 Rhone Poulenc Fibres Procede simplifie de filage de polyamide a grande vitesse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6669993B2 (en) 2000-09-19 2003-12-30 Honeywell International Inc. High speed yarn finish application
US6797065B2 (en) 2000-09-19 2004-09-28 Honeywell International Inc. High speed yarn finish application

Also Published As

Publication number Publication date
MX162854B (es) 1991-06-28
EP0195156A3 (de) 1988-01-07
ZA86951B (en) 1986-12-30

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