US3431336A - Funnel spinning of viscose rayon filaments - Google Patents

Funnel spinning of viscose rayon filaments Download PDF

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Publication number
US3431336A
US3431336A US676527A US3431336DA US3431336A US 3431336 A US3431336 A US 3431336A US 676527 A US676527 A US 676527A US 3431336D A US3431336D A US 3431336DA US 3431336 A US3431336 A US 3431336A
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US
United States
Prior art keywords
spinning
viscose
funnel
liquid
spinneret
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
US676527A
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English (en)
Inventor
Akihiro Isobe
Yutaka Fujinawa
Kogi Iwasaki
Takeshi Ikeda
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.)
Asahi Kasei Corp
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry Co 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 Asahi Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
Application granted granted Critical
Publication of US3431336A publication Critical patent/US3431336A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D01D5/12—Stretch-spinning methods
    • D01D5/14—Stretch-spinning methods with flowing liquid or gaseous stretching media, e.g. solution-blowing
    • 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
    • D01D4/04—Cleaning spinnerettes or other parts of the 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
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/06—Wet spinning methods

Definitions

  • This invention relates to a process for the funnel spinning of viscose rayon filaments.
  • Another object is to provide an improved funnel spinning process of the above kind which is capable of operating at a higher spinning velocity substantially with out fear of filament breakage.
  • Still another object is to provide a spinning process of the above kind which is capable of keeping the spinneret orifices always in clean or nonclogged conditions.
  • the present invention in its broadest aspect resides in a viscose spinning process relying upon the funnel spinning technique, said process being characterized by that at the starting period of the spinning process a liquid different from the bath liquid yet capable of dissolving the viscose liquid, preferably water, is led to flow through the funnel zone, and then the liquid is changed off to the regular bath liquid.
  • the numeral 1 denotes a spinneret which is formed therein as co nventionally with a number of extrusion orifices, although not shown.
  • Viscose spinning liquid is supplied ot the spinneret 1 as again conventionally from a supply source, preferably a metering gear pump at 12 through a supply piping 2, the lower end of the latter projecting into the interior space of the enlarged head chamber 11 of a funnel 3 extending vertically as shown.
  • the spinneret 1 is mounted stationary within the funnel head 11 in a dipped manner.
  • Liquid supply pipe 4 is kept in fluid communication with both pipes 5 and 7, the former pipe 5 being connected through a valve means 6 with a proper supply source which may preferably be a pump 13 adapted for the delivery of a certain kind of liquid, for instance, water which is capable of dissolving viscose.
  • the latter pipe 7 is also connected through a valve means 8 with a second supply cource which may preferably be a pump 14 adapted for the supply of coagulation bath liquid having a conventionally employed acid composition.
  • a receptacle or tank 9 adapted for collecting the discharged liquid and discharging it to a convenient place through a dischaged piping, although not shown.
  • a guide 10 preferably in the form of a freerotatable or positively driven roller as shown, is also provided so as to guide the coagulated viscose filaments emerging from the lower end of the fluid bath tube 3, in a deflecting manner therefrom.
  • an operator closes the valve 8 in the second pipe 7 and opens the valve 6 in the first pipe 5, thereby feeding through pipes 5 and 6 into the interior space of the funnel head 11 provisionarily a certain kind of liquid, preferably water, alkaline aqua solution or the like, which is thus different from the regular bath liquid, yet capable of dissolving viscose in and on the spinneret 1, thence the fed liquid is led to pass through the tube 3.
  • a certain kind of liquid preferably water, alkaline aqua solution or the like, which is thus different from the regular bath liquid, yet capable of dissolving viscose in and on the spinneret 1, thence the fed liquid is led to pass through the tube 3.
  • the operator actuates the spinning pump 12 so as to feed viscose liquid through the pipe 2 to the spinneret 1, for initiating the viscose extrusion Step from the extrusion orifices thereof.
  • EXAMPLE 1 While using a spinning assembly shown and described in the foregoing, the valve 8 in the pipe 7 is closed at first and then the valve 6 in the pipe is opened, in advance of feeding a viscose solution, having a conventional composition, to the spinneret 1 formed with 26 extrusion orifices, each having a bore of 0.07 mm. Then the pump 13 is operated to feed water through the pipes 5 and 4 to the funnel head 11 and the viscose pump 12 is operated to feed the viscose through the feed pipe 2 to the spinneret 1. After lapse of 1 minute, the water valve 6 is gradually closed, while the second or bath control valve 8 is gradually opened upon energization of the pump 14.
  • a viscose solution having a conventional composition
  • the liquid flowing through the funnel 3 has been changed off from water to a regular coagulation bath liquid, having a composition: H 50 160 g./liter; Na SO 300 g./liter and ZnSO 15 g./liter.
  • the extrusion orifices could be kept, even in the initial period of spinning, in a completely clean condition for the desirous extrusion of the viscose, without any fear of breakage of the coagulatcd filaments which were, upon emerging from the lower end of the funnel 3, stretched and wound up in the regular way.
  • the regular spinning was carried into effect at an extrusion velocity of 150 meters per minute and the filaments were of denier.
  • EXAMPLE 2 In the process set forth in Example 1, the water was replaced by an alkaline aqua solution, containing an alkali, preferably NaOH, KOH or the like, in the ratio of 1:8 g./liter. Other operating conditions were same as before. In this example, no fear of clogging the extrusion orifices was experienced, and there was also no filament breakage. The spinning speed amounted to meters per minute and the produced filaments were of denier.
  • a viscose spinning process operating upon the funnel spinning technique comprising: feeding a liquid different from the regular bath liquid, yet capable of dissolving the viscose, preferably water through the funnel zone at the initiation stage of the spinning process, extruding the viscose solution through orifices and leading to pass through said funnel zone, and then feeding the regular coagulation bath liquid through said zone after stopping the feed of said first liquid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)
US676527A 1966-10-24 1967-10-19 Funnel spinning of viscose rayon filaments Expired - Lifetime US3431336A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6990366 1966-10-24

Publications (1)

Publication Number Publication Date
US3431336A true US3431336A (en) 1969-03-04

Family

ID=13416104

Family Applications (1)

Application Number Title Priority Date Filing Date
US676527A Expired - Lifetime US3431336A (en) 1966-10-24 1967-10-19 Funnel spinning of viscose rayon filaments

Country Status (5)

Country Link
US (1) US3431336A (de)
CH (1) CH473239A (de)
DE (1) DE1660188C3 (de)
GB (1) GB1193314A (de)
NL (1) NL6714368A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4245972A (en) * 1979-06-14 1981-01-20 Hermann Berstorff Maschinenbau Gmbh Granulating apparatus
US5299926A (en) * 1991-10-24 1994-04-05 Sumika-Hercules Co., Ltd. Spinning apparatus having a tubular elastomeric flow control valve body
US5827797A (en) * 1989-08-28 1998-10-27 Cass; Richard B. Method for producing refractory filaments

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4004798A1 (de) * 1990-02-16 1991-08-22 Akzo Gmbh Verfahren und vorrichtung zur herstellung von formkoerpern
US5254303A (en) * 1990-02-16 1993-10-19 Akzo N.V. Method and device for manufacturing molded bodies

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049755A (en) * 1959-08-03 1962-08-21 Asahi Chemical Ind Process and apparatus for stretch spinning cuprammonium rayon
US3056163A (en) * 1955-05-18 1962-10-02 American Viscose Corp Spinneret

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3056163A (en) * 1955-05-18 1962-10-02 American Viscose Corp Spinneret
US3049755A (en) * 1959-08-03 1962-08-21 Asahi Chemical Ind Process and apparatus for stretch spinning cuprammonium rayon

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4245972A (en) * 1979-06-14 1981-01-20 Hermann Berstorff Maschinenbau Gmbh Granulating apparatus
US5827797A (en) * 1989-08-28 1998-10-27 Cass; Richard B. Method for producing refractory filaments
US5299926A (en) * 1991-10-24 1994-04-05 Sumika-Hercules Co., Ltd. Spinning apparatus having a tubular elastomeric flow control valve body

Also Published As

Publication number Publication date
DE1660188A1 (de) 1971-11-04
DE1660188B2 (de) 1973-05-24
DE1660188C3 (de) 1973-12-13
GB1193314A (en) 1970-05-28
NL6714368A (de) 1968-04-25
CH473239A (de) 1969-05-31

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