US3559965A - Apparatus for heating synthetic filaments - Google Patents

Apparatus for heating synthetic filaments Download PDF

Info

Publication number
US3559965A
US3559965A US843004A US3559965DA US3559965A US 3559965 A US3559965 A US 3559965A US 843004 A US843004 A US 843004A US 3559965D A US3559965D A US 3559965DA US 3559965 A US3559965 A US 3559965A
Authority
US
United States
Prior art keywords
slit
heating
filaments
heater
buffer plates
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
US843004A
Other languages
English (en)
Inventor
Kinyu Ishida
Yasuhiro Okamura
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
Original Assignee
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 US3559965A publication Critical patent/US3559965A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D02J13/001—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass in a tube or vessel
    • 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
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/02—Heat treatment
    • 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
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/04—Supporting filaments or the like during their treatment
    • D01D10/0436—Supporting filaments or the like during their treatment while in continuous movement
    • D01D10/0463—Supporting filaments or the like during their treatment while in continuous movement the filaments being maintained parallel
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/224—Selection or control of the temperature during stretching
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass

Definitions

  • Mayewsky Attorney-Wenderoth, Lind and Ponack ABSTRACT An apparatus for heating a great number of synthetic filaments or a tow uniformly and with good thermal efficiency in a slit-type heater while having them run in and out of the slit by disposing a plurality of buffer plates in the slit to obstruct outside air flowing into the slit with the running filaments, and thereby prevent a drop of air temperature in the slit, and make possible a substantially constant air temperature transversely of the slit.
  • the instant invention relates to an apparatus for heating synthetic filaments or a tow for their heat-drawing and heattreatment.
  • the invention relates to a slit-type heating apparatus wherein a great number of running synthetic filaments or a tow are less apt to be given inconsistent mechanical properties such as fiber strength, heat shrinkage, etc., because air temperature drop is prevented and consistent heating is provided in the slit-type heating apparatus.
  • synthetic filaments are generally heat-drawn to several times their original lengths with a feed roll running at a specified peripheral speed and a draw roll running several times as fast as the feed roll and are then heat treated.
  • a heating apparatus for the heat-drawing and heat-treatment of such synthetic filaments, there have heretofore been used such devices as a steam heater, an infrared ray heater, a fluidized bed heater, a hot-air circulation system, a heating member contact system, etc.
  • a so-called slit-type heater wherein filaments are advanced in a narrow passage excels the others in the ease of operations, the simplicity of the equipment, and absence of fiber damage due to friction, said slit being formed by having a pair of heating plates facing each other.
  • this slit-type heater is that cold air accompanying a large number of running filaments is introduced through the entrance into the inside of the slit and thereby the temperature within the slit of the heating apparatus falls, resulting in the lowering of heating efficiency. Then this is followed by an inconsistency of the temperature within the apparatus.
  • the instant invention has been made.
  • a plurality of buffer plates are installed in the slit; the air accompanying the running filaments is thereby blocked and diverted, and consequently the temperature differences in the lateral direction of the slit have successfully been decreased.
  • FIG. 1 is a perspective view of a slit-type heating apparatus according to the instant invention in the opened state;
  • FIGS. 2a2c are vertical sections showing various types of buffer plates located inside the slit.
  • FIG. 3 is a heat distribution diagram showing heat distribution measured transversely of the slit.
  • Test results of measuring temperature with a number of thermocouples disposed transversely of slit-type heaters are shown in FIG. 3.
  • the abscissa (P) denotes the positions of the measurement, which extend transversely of the interior of the heater from one side to the other across the center
  • the ordinate (C.) denotes the measured temperature.
  • the plotting of the test results for a conventional slit-type heater is shown in curve A. It is seen that there is a drop in temperature in the center of the slit.
  • the slit-type heater of this invention comprises an upper heating plate 1 and a lower heating plate 2; shallow grooves 3 and 3' are provided in the central surfaces of heating plates 1 and 2 facing each other, and a slit is defined by grooves 3 and 3' when heating plates 1 and 2 are put together; a number within filaments run along the space of the slit and are subjected to heating.
  • heating plates 1 and 2 are provided in heating plates 1 and 2,
  • heating elements for instance, electric resistors 6 and 6' may be embedded as shown in the drawing, or hollow spaces may be provided in the interior of the plates 1 and 2 to permit steam or other heating fluids flow through them. It is desired that the space formed by grooves 3 and 3' be as narrow as possible, for the narrowness helps prevent outside air having lower temperatures from flowing into the slit. However, while a number of filaments 5 are running into the slit, outside air enters the slit, accompanying the filaments. The amount of outside air entering is intense in the center of the slit and somewhat gentle at both ends. In FIG. 3 showing heating distribution, the heating at the center is less than at the ends.
  • a plurality of buffer plates are placed in the slit formed with grooves 3 and 3' as shown in FIG. I.
  • Said buffer plates may be mounted on upper heating plate I only or on the lower heating plate 2 only. It is desirable to secure the buffer plates so that they are almost at right angles to the running filaments 5, but this does not mean that they must be positioned as such a right angle.
  • Buffer plates 4 and filaments S are preferably closely adjacent each other, but contact between them should be avoided because the filaments may be damaged by friction. The greater the number of bufier plates, the better will be the effect.
  • FIGS. 20-20 are vertical sectional side views of slit-type heaters provided with various types of buffer plates.
  • FIG. 2 a shows heater having I-shaped plates
  • FIG. 2b a heater having T- shaped plates
  • FIG. 2c a heater having L-shaped plates.
  • FIG. 3 shows heat distribution measured transversely of the slit at positions cm. from the entrance, when a slit-type heater having a slit being 2 m. long, 20 cm. wide, 3 cm. high was heated to 340 C.
  • Curve A denotes the case when buffer plates 4 were not provided, and the center of the slit has very low heating temperatures as compared with the ends of the slit. This is because near the center greater amounts of outside air accompany the running filaments and flow into the slit.
  • curve B shows the heat distribution in the same slit-type heater wherein 20 I-shaped bufler plates as shown in FIG. 2 were mounted on the upper and the lower heating plate respectively at equal intervals and alternately.
  • a slit-type heater for heating synthetic filaments comprising a pair of opposed heating plates of heat conductive material, each having a groove along the face thereof facing toward the other heating plate, the grooves together defining an elongated slit when the heating plates are against one another, a heating means in each heating plate for heating the heating plate, and a plurality of buffer plates positioned at spaced intervals along the groove in each heating plate and extending from the bottom of the groove in a direction out of the groove substantially perpendicular to said groove and from one side to the other side of said groove and terminating sufficiently short of the surface of the heating plate which is to abut the surface of the other heating plate to provide a space between the buffer plates sufficiently large to allow the filaments to run through the slit without contacting the buffer plates, whereby the temperature transversely of the slit is made substantially uniform by the action of the buffer plates in preventing outside air from being drawn into the slit by the movement of the filaments through the slit.
  • a slit-type heater as claimed in claim 1 in which said buffer plates in one heater plate are offset in the direction of the length of the slit from the buffer plates in the other heater plate.
  • a slit-type heater as claimed in claim I in which said buffer plates are l-shaped in cross section.
  • a slit-type heater as claimed in claim 1 in which said buffer plates are T-shaped in cross section with the crossbar portion thereof adjacent the other heater plate.
  • a slit-type heater as claimed in claim 1 in which said buffer plates are L-shaped in cross section with the transverse portion thereof adjacent the other heater plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US843004A 1968-07-23 1969-07-18 Apparatus for heating synthetic filaments Expired - Lifetime US3559965A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5196668 1968-07-23

Publications (1)

Publication Number Publication Date
US3559965A true US3559965A (en) 1971-02-02

Family

ID=12901595

Family Applications (1)

Application Number Title Priority Date Filing Date
US843004A Expired - Lifetime US3559965A (en) 1968-07-23 1969-07-18 Apparatus for heating synthetic filaments

Country Status (4)

Country Link
US (1) US3559965A (pt)
BR (1) BR6910916D0 (pt)
GB (1) GB1275270A (pt)
NL (1) NL144341B (pt)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4107911A (en) * 1976-06-18 1978-08-22 Murata Kikai Kabushiki Kaisha Pneumatic spinning apparatus
US5030810A (en) * 1987-08-21 1991-07-09 British Telecommunications Public Limited Company Heating device
US5138829A (en) * 1990-02-10 1992-08-18 Teijin Seiki Co., Ltd. Apparatus for heat treating a synthetic yarn
US5154892A (en) * 1989-05-02 1992-10-13 Th. Goldschmidt Ag Apparatus for achieving and maintaining an oxygen-deficient inert atmosphere within a treatment chamber
US5332882A (en) * 1992-07-08 1994-07-26 Icbt Roanne Device for heating a yarn in motion with removable heater block
US5404705A (en) * 1992-07-24 1995-04-11 Teijin Seiki Co., Ltd. Apparatus for heat treating a synthetic yarn during false-twist texturing
US5578231A (en) * 1992-06-06 1996-11-26 Barmag Ag Heater for an advancing yarn
US5605644A (en) * 1993-06-15 1997-02-25 Barmag Ag Yarn heating apparatus
US5628175A (en) * 1994-06-22 1997-05-13 Barmag Ag Heating apparatus for heating an advancing synthetic filament yarn
US5760374A (en) * 1992-06-06 1998-06-02 Barmag Ag Heating apparatus for an advancing yarn
US5797256A (en) * 1995-06-27 1998-08-25 Barmag Ag Apparatus for heating an advancing yarn
US5822971A (en) * 1992-08-25 1998-10-20 Barmag Ag Adjustable heating apparatus for an advancing yarn
US20040141544A1 (en) * 2002-12-11 2004-07-22 Sam Paris Filament temperature measuring device with fluid velocity and temperature compensator system
US20090152257A1 (en) * 2007-12-12 2009-06-18 Chao-Chuan Cheng Electric Heating Device
CN104233541A (zh) * 2013-06-08 2014-12-24 苏州联优织造有限公司 复合式纺线冷却装置
US20190330766A1 (en) * 2018-04-28 2019-10-31 Dennis Joseph Steibel, JR. Apparatus for removing moisture from a section of polymer filament

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2806992C2 (de) * 1978-02-18 1986-08-28 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid Heizschiene in Falschzwirn-Kräuselmaschinen

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1656709A (en) * 1927-01-27 1928-01-17 Standard Electric Stove Co Electric oven
US2624934A (en) * 1948-04-23 1953-01-13 W M Steele Company Inc Method of and apparatus for heat treatment of filamentary material
US2877332A (en) * 1955-07-05 1959-03-10 Empire Prod Inc Strip heater
US3319047A (en) * 1964-06-05 1967-05-09 Gen Electric Low thermal loss electric heater for synthetic yarns
US3349222A (en) * 1964-07-02 1967-10-24 Stromberg Carlson Corp Device for contact heating of moving sheet material
US3387833A (en) * 1966-09-02 1968-06-11 Tmm Research Ltd Heat treatment of filaments
US3444357A (en) * 1967-02-07 1969-05-13 Wiegand Co Edwin L Electric heating apparatus

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1656709A (en) * 1927-01-27 1928-01-17 Standard Electric Stove Co Electric oven
US2624934A (en) * 1948-04-23 1953-01-13 W M Steele Company Inc Method of and apparatus for heat treatment of filamentary material
US2877332A (en) * 1955-07-05 1959-03-10 Empire Prod Inc Strip heater
US3319047A (en) * 1964-06-05 1967-05-09 Gen Electric Low thermal loss electric heater for synthetic yarns
US3349222A (en) * 1964-07-02 1967-10-24 Stromberg Carlson Corp Device for contact heating of moving sheet material
US3387833A (en) * 1966-09-02 1968-06-11 Tmm Research Ltd Heat treatment of filaments
US3444357A (en) * 1967-02-07 1969-05-13 Wiegand Co Edwin L Electric heating apparatus

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4107911A (en) * 1976-06-18 1978-08-22 Murata Kikai Kabushiki Kaisha Pneumatic spinning apparatus
US5030810A (en) * 1987-08-21 1991-07-09 British Telecommunications Public Limited Company Heating device
US5154892A (en) * 1989-05-02 1992-10-13 Th. Goldschmidt Ag Apparatus for achieving and maintaining an oxygen-deficient inert atmosphere within a treatment chamber
US5138829A (en) * 1990-02-10 1992-08-18 Teijin Seiki Co., Ltd. Apparatus for heat treating a synthetic yarn
US5353583A (en) * 1990-02-10 1994-10-11 Teijin Seiki Co., Ltd. Apparatus for heat treating synthetic yarn
US5578231A (en) * 1992-06-06 1996-11-26 Barmag Ag Heater for an advancing yarn
US5760374A (en) * 1992-06-06 1998-06-02 Barmag Ag Heating apparatus for an advancing yarn
US5332882A (en) * 1992-07-08 1994-07-26 Icbt Roanne Device for heating a yarn in motion with removable heater block
US5528893A (en) * 1992-07-24 1996-06-25 Teijin Seiki Co. Ltd. Method for heat treating a synthetic yarn during false-twist texturing and a method for rethreading a yarn
US5404705A (en) * 1992-07-24 1995-04-11 Teijin Seiki Co., Ltd. Apparatus for heat treating a synthetic yarn during false-twist texturing
US5822971A (en) * 1992-08-25 1998-10-20 Barmag Ag Adjustable heating apparatus for an advancing yarn
US5605644A (en) * 1993-06-15 1997-02-25 Barmag Ag Yarn heating apparatus
US5628175A (en) * 1994-06-22 1997-05-13 Barmag Ag Heating apparatus for heating an advancing synthetic filament yarn
US5797256A (en) * 1995-06-27 1998-08-25 Barmag Ag Apparatus for heating an advancing yarn
US20040141544A1 (en) * 2002-12-11 2004-07-22 Sam Paris Filament temperature measuring device with fluid velocity and temperature compensator system
US20090152257A1 (en) * 2007-12-12 2009-06-18 Chao-Chuan Cheng Electric Heating Device
CN104233541A (zh) * 2013-06-08 2014-12-24 苏州联优织造有限公司 复合式纺线冷却装置
US20190330766A1 (en) * 2018-04-28 2019-10-31 Dennis Joseph Steibel, JR. Apparatus for removing moisture from a section of polymer filament

Also Published As

Publication number Publication date
DE1937492B2 (de) 1976-01-22
NL144341B (nl) 1974-12-16
BR6910916D0 (pt) 1973-04-19
GB1275270A (en) 1972-05-24
NL6911305A (pt) 1970-01-27
DE1937492A1 (de) 1970-02-26

Similar Documents

Publication Publication Date Title
US3559965A (en) Apparatus for heating synthetic filaments
US3015872A (en) Apparatus for the heat treatment of running yarns
US4801778A (en) Condensation resistant electrode for use in a dielectric heating apparatus
US3393292A (en) Pressure plate for a press
US4567721A (en) Method for producing textured yarn
US3364294A (en) Filament orientation process
US3680334A (en) Apparatus having chamber of oval cross-section for heat treating largedenier tow
EP0620302B1 (en) A cooling apparatus of a false texturing machine
US3359524A (en) Flexible heating elements
US3581812A (en) Heated godet for drawing systems and cylinder dryers
US3071838A (en) Apparatus for heat treating thermoplastic yarns
US3440736A (en) Apparatus for the treatment of lengths of materials
US3394429A (en) Apparatus for stretching thermoplastic synthetic fibers
US3209467A (en) Strand annealers
EP0201521B1 (en) Method and apparatus for thermally treating tape
US3626558A (en) Textile heater apparatus
US3170060A (en) High stability test oven
US3264752A (en) Web treating apparatus
US4497627A (en) Hot shoe apparatus for preheating drafting, and stabilizing in sequence a running yarn strand
US3413731A (en) Apparatus for the heat-treatment of materials of all kinds
GB1166244A (en) Yarn Heater.
US3404441A (en) Apparatus for the heat treatment of a running yarn
GB1215029A (en) Improvements in or relating to apparatus for the heat treatment of continuously running yarns, threads or like continuous strands
GB1175841A (en) Textile Apparatus
US5797256A (en) Apparatus for heating an advancing yarn