US3669584A - Melt-spinning apparatus - Google Patents

Melt-spinning apparatus Download PDF

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Publication number
US3669584A
US3669584A US868407A US3669584DA US3669584A US 3669584 A US3669584 A US 3669584A US 868407 A US868407 A US 868407A US 3669584D A US3669584D A US 3669584DA US 3669584 A US3669584 A US 3669584A
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US
United States
Prior art keywords
spinning
shutter
chimney
filaments
melt
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
US868407A
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English (en)
Inventor
Seibi Yamada
Haruki Takizawa
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.)
Teijin Ltd
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Teijin 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 Teijin Ltd filed Critical Teijin Ltd
Application granted granted Critical
Publication of US3669584A publication Critical patent/US3669584A/en
Anticipated expiration legal-status Critical
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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
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
    • 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

Definitions

  • a melt-spinning apparatus comprising a spinning assembly extruding molten filament-forming polymeric materials into a number of filaments, a spinning chimney provided 'below the spinning assembly, in which a stream of fluid quenches said filaments, flowing from the back part of the chimney to the front opened part thereof, and a shutter provided between said spinning assembly and spinning chimney, said shutter having an opening through which extruded filaments pass; said shutter is divided into at least two parts within a plane of the shutter in order to facilitate a threading operation at the beginning of the spinning operation and an observation of the spinneret surface during the spinning operation by moving one of said parts.
  • This invention relates to a melt-spinning apparatus having a spinning chimney for quenching and solidifying filaments extruded through a spinneret from molten filamentforming polymeric materials, and more particularly it relates to a melt-spinning apparatus having a spinning chimney for facilitating a threading operation at the beginning of the spinning operation and an observation of the spinneret surface during the spinning operation.
  • a spinning chimney is provided below the spinneret so that extruding filaments are uniformly quenched and solidified by a stream of fluid therein.
  • Said chimney is opened at the front part thereof, to which a stream of cooling fluid is allowed to flow from the back part, thereby filaments being subjected to quenching and solidifying.
  • extruded filaments include troubles such as breakages and denier irregularities of filaments.
  • a shutter having an opening through which filaments run is usually provided between the spinneret and the upper end of the chimney, thereby said shutter preventing a cold fluid from flowing up to and cooling the surface of the spinneret.
  • the operation for mounting or dismounting of the spinning pack and the surveying or cleaning of the spinneret surface can be made by removing the spinning chimney from the spinning apparatus through troublesome operations such as opening, tilting, and moving it downwardly.
  • these operations bring about not only complicated processes but also the looseness of the assembly of the spinning chimney and the stream condition of the cooling fluid varies with the' result that differences such as denier, tenacity, dyeing characteristics between other spinning apparatuses occur and the breakages or denier irregularities of the filaments occur by intense turbulent flow even in a chimney.
  • the shutter is provided rigidly on the upper end of the chimney, it will take a long time to thread a bundle of filaments through the opening of the shutter at the beginning of the spinning operation.
  • a melt-spinning apparatus of this invention comprising a melt-spinning assembly extruding polymer into a number of filaments, a spinning chimney provided below molten polymer into a number of filaments, a spinning chimney provided below flowing from the back part of the chimney to the front opened part thereof, and a shutter provided between said spinning assembly and spinning chimney, said shutter having an opening through which extruded filaments pass, characterized in that said shutter is divided into at least two parts within the plane of the shutter.
  • FIG. 1 is a front view in the central vertical section of the spinning apparatus.
  • FIG. 2 is a side view in the central vertical section of the spinning apparatus.
  • FIG. 3 is a side view in the central vertical section of the spinning apparatus with one of the divided parts of the shutter removed therefrom.
  • FIG. 4 is an enlarged perspective view of the shutter.
  • FIGS. 5(a) and (b) are other embodiments in the enlarged section divided parts of the shutter.
  • a spinning chimney 8 which comprises side plates 9, 10 and a back plate 11 in such a manner that a front part 12 is opened, while a back part is closed.
  • a screen 13 is positioned between the back plate 11 and filaments 3 passing through the spinning chimney 8 so as to form a plenum chamber 14 between the back plate 11 and the screen 13.
  • the cooling fluid such as air and inert gas to pass through the screen 13 just prior to contacting filaments 3.
  • the shutter guide plate 7 at its inner side provides a groove 15 into which the projected portion 16 of the shutter 17, having an opening 18 through which filaments run, is so engaged that the shutter 17 can be supported by the shutter guide plate 7.
  • Said shutter guide plate 7 has an opened end 23 on the side in which direction the shutter 17 can be reciprocated.
  • Said shutter 17 is divided into two parts 17a, 17b at the divided portion 19 around the opening 18 within the plane of the shutter 17 as shown'in FIG. 4.
  • a member 20 e.g. knob, handle, or the like is fixed to one 17b of said parts at the side of the front part of the chimney 8 so as to pull it toward the front surface of the chimney 8.
  • the divided surface of one part 17b of the shutter 17 is formed with a ledge 21 against which a projected portion 22 in the divided surface of the other part 17a abuts as shown in FIG- 4.
  • this invention may include the shutter which is divided into more than two parts, wherein a handle member may be fixed to one or all parts of the shutter.
  • the divided surfaces of parts 17a 17b of said shutter 17 may be formed as a slot and tongue respectively as in FIG. 5a or zigzag as in FIG. 5b and meshed with each other when said parts 17a 17b are arranged.
  • the shutter at the divided surfaces of said parts are so formed that cooling air does not flow up from the divided portion and does not cool the surface of the spinneret.
  • the shutter is made of metal or asbestos.
  • the magnitude of the opening may be preferably as small as possible within the range of non-contacting the inner wall of the opening with running filaments not so as to affect the surface of spinneret by the cooling fiuid.
  • the configuration of the opening may be not only circle but also ellipse, rectangle, and other desired form. In the case of passing more than one bundle of [filaments through only one chimney, it is essential that the same number of openings as that of said bundles be provided with the shutter.
  • the part 17b of the shutter 17 positioned at the front part of the chima bobbin not shown. After that operation, said part 17b of the shutter 17 is inserted into the shutter guide plate 7 until said part 17b comes into contact with the other part 17a.
  • the opening of the shutter is divided so wide that a bundle of filaments can be easily threaded through the opening.
  • this invention is advantageous in easy threading operation and slight danger of the burn by molten polymer etc., during said operation in comparison with that of the conventional method in which the threading operation has been done by inserting a tool or the like through a non-divided narrow opening from below.
  • a melt-spinning apparatus comprising a spinning assembly suitable for extruding molten filament-forming polymeric materials into a number of filaments, a spinning chimney provided below said spinning assembly, said spinning chimney having side walls and a back wall, means to provide a stream of fluid which quenches said filaments, said stream blowing in a direction from the back wall to the opposite side of said back wall, a shutter guide plate positioned between said spinning assembly and said spinning chimney, said guide plate being provided with a horizontal groove, and a shutter positioned in the groove of the guide plate to prevent said spinning assembly from being cooled with said stream towards said spinning assembly, said shutter consisting of at least two unattached, reciprocable plate members having complementary cutaway portions which form an opening when said plate members are moved into contact with each other through which the extruded filaments pass before entering the spinning chimney.
  • a melt-spinning apparatus according to claim 1,.
  • a melt-spinning apparatus according to claim 1, wherein a handle member is secured to the outside of each plate member.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US868407A 1968-10-24 1969-10-22 Melt-spinning apparatus Expired - Lifetime US3669584A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7747568 1968-10-24

Publications (1)

Publication Number Publication Date
US3669584A true US3669584A (en) 1972-06-13

Family

ID=13634997

Family Applications (1)

Application Number Title Priority Date Filing Date
US868407A Expired - Lifetime US3669584A (en) 1968-10-24 1969-10-22 Melt-spinning apparatus

Country Status (5)

Country Link
US (1) US3669584A (enrdf_load_stackoverflow)
CA (1) CA944516A (enrdf_load_stackoverflow)
DE (1) DE1953721A1 (enrdf_load_stackoverflow)
GB (1) GB1233514A (enrdf_load_stackoverflow)
NL (1) NL6915978A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891379A (en) * 1972-10-05 1975-06-24 Barmag Barmer Maschf Spinning head with an exchangeable, self-sealing nozzle assembly
US4590032A (en) * 1982-06-21 1986-05-20 Eastman Kodak Company Process for draw-fracturable yarn
US5178814A (en) * 1991-08-09 1993-01-12 The Bouligny Company Quenching method and apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19811240C2 (de) * 1998-03-14 2000-05-31 Memminger Iro Gmbh Fadenliefergerät mit verbessertem Fadenlauf

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3891379A (en) * 1972-10-05 1975-06-24 Barmag Barmer Maschf Spinning head with an exchangeable, self-sealing nozzle assembly
US4590032A (en) * 1982-06-21 1986-05-20 Eastman Kodak Company Process for draw-fracturable yarn
US5178814A (en) * 1991-08-09 1993-01-12 The Bouligny Company Quenching method and apparatus

Also Published As

Publication number Publication date
DE1953721A1 (de) 1970-05-14
CA944516A (en) 1974-04-02
GB1233514A (enrdf_load_stackoverflow) 1971-05-26
NL6915978A (enrdf_load_stackoverflow) 1970-04-28

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