US3626156A - Temperature control of a jacketed-chamber of melt spinning machine - Google Patents

Temperature control of a jacketed-chamber of melt spinning machine Download PDF

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Publication number
US3626156A
US3626156A US876877A US3626156DA US3626156A US 3626156 A US3626156 A US 3626156A US 876877 A US876877 A US 876877A US 3626156D A US3626156D A US 3626156DA US 3626156 A US3626156 A US 3626156A
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United States
Prior art keywords
heaters
chamber
heating
temperature
row
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Expired - Lifetime
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US876877A
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English (en)
Inventor
Haruki Takizawa
Nobuo Muramatsu
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Teijin Ltd
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Teijin Ltd
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    • 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
    • D01D1/09—Control of pressure, temperature or feeding rate

Definitions

  • Bell Attorney-John Lezdey ABSTRACT The heating powers of the heaters positioned at the both ends of a hermetically sealed and heat-insulated chamber enclosing a group of spinning heads and having electric heaters for heating a heating medium therein, wherein every spinneret assembly is positioned between said heaters, are reduced to 30-90 percent of those of the others, the currents supplied to said heaters being all at once on-off operated by means of a temperature controller.
  • This invention relates to a method for controlling the temperature of a hermetically sealed and heat-insulated chamber used in melt spinning process of synthetic polymeric filaments.
  • Dyeing property of a synthetic yarn, especially filamentary yarn is the most important feature, and it is no exaggeration that dyeing property decides the quality of final product.
  • One of the factors which greatly influence dyeing property is the temperature of melt polymer spun out of the spinneret.
  • a spinning head comprising pipeline, a measuring pump and a spinneret assembly is housed in a hermetically sealed and heat-insulated chamberto keep the temperature of melt polymer constant.
  • the temperature of the chamber is maintained at the set value by means of a controller.
  • This invention relates, especially, to a method for controlling the temperature of a chamber which is hermetically sealed and heat insulated of the latter said type.
  • a chamber which is hermetically sealed and heat insulated of the latter said type.
  • Such chamber has a heating fluid taken in lower half thereof and a vacuumized space in upper half thereof. Accordingly a heating fluid heated by above-mentioned heaters, the vapor of the heating fluid occupies the upper space and the temperature thereof becomes uniform because the pressure thereof is as same as the vapor pressure of the heating fluid and this pressure is uniform in the space.
  • the temperature of the heating fluid in not uniform in the chamber because of insufficient stirring only by convection. Therefore a group of the spinning heads, a part of which are heat-exchanged with the heating fluid tend to to have different temperatures individually, and dyeing properties of spun-out filaments are different at every spinning head.
  • the object of this invention is to provide a method for controlling the temperature of the chamber which eliminates nonuniformity of the temperature and all the troubles connected with dyeing properties of the filaments.
  • the above objects are accomplished according to the present invention by reducing the heating powers of the heaters positioned at the both ends of the chamber.
  • FIG. 1 represents a horizontal sectional view of a hermetically sealed and heat insulated chamber and a group of spinning heads therein of a spinning machine of double-side built type.
  • FIG. 2 represents that of one-side built type
  • FIG. 3 represents a vertical sectional view of the same in FIG. 2,
  • FIG. 4 shows electrical connections according to this invention
  • FIG. 5 and FIG. 6 illustrate in graphic form the temperatures of the polymer spun out of the spinning heads in FIG. 2, and
  • FIG. 7 illustrates that according to this invention.
  • molten polymer is delivered to a group of spinneret assemblies 2 to be spun out as filaments l3 therefrom, through a treelike connected pipeline 1,
  • a measuring pump 4 which supplies continuously, under high pressure a constant volume of molten polymer is mounted in the midst of each pipeline 3 connected by means of a gasket 12 to a spinneret assembly 2 comprising of a spinneret 5, a gasket 6, a bridge plate 7, a screen 8, a sand filter 9, a plug 10 and a holder II.
  • a group of spinning heads each of which is comprising of a pipeline 3.
  • a measuring pump 4 and a spinneret assembly 2 arehoused for temperature control in a chamber 14 coveredwith insulating panels (not shown).
  • This chamber I4 has a vacuumized space A in upper half thereof and a heating fluid B in lower half thereof heated by electric heaters 15 which are so arranged that every spinneret assembly 2 may be positioned therebetween and the currents supplied to said heaters IS are all at once on-off operated by means of a temperature controller (not shown) to which temperature signal of the chamber I4 detected by a temperature sensor (not shown) is fed back.
  • the heating powers of the heaters positioned at the both ends of the chamber 14 are reduced to 30-90 percent of those of the others to eliminate said nonuniformity of the temperatures.
  • the heating capacities or, preferably, supplied currents of the heaters at the both ends of the chamber I4 may be adjusted at a value between 30 percent and percent of those of others.
  • the supplied currents of the heaters at the both ends of the chamber I4 can be varied independently of those of the other heaters by adjusting current regulators 19, 20 respectively and the current common to regulators 19, 20 is on-off controlled by the control switch 18 which is operated by a temperature controller 17, to which the temperature signal of the chamber 14 detected by a sensor 16 is feedbacked, so that the temperature of the chamber 14 is maintained at the set value of the controller 17.
  • the current regulator I8 is adjusted considering controlling property, while the current regulator 19 is adjusted so that the temperatures of the polymers in every spinneret assembly 2 which can be measured by taking away the spinneret 5 out of the spinneret assembly 2 and inserting a temperature sensor into the bridge-plate 7 in the spinneret assembly 2, may be uniform.
  • a relay is used as control switch 18, but solid-state switch, such as SCR, may be preferably used.
  • This control switch 18 can be provided at every heater 15 in the place of said relay, in this case all switches must be all at once on-off operated.
  • FIG. 5, FIG. 6 and FIG. 7 shows the temperatures of the molten polymer spun out of each spinneret assembly of one side builded spinning machine wherein FIG. 5 illustrates that in prior art, FIG. 6 illustrates that in the case that the heaters positioned at the both ends of the chamber are not used and FIG. 7 illustrates that according to this invention.
  • the temperatures of the molten polymers spun out of the spinneret assemblies housed in the single chamber had apparently in these graphs nonuniformity in excess of 5 C., namely the temperatures of the polymers spun out of the spinneret assemblies positioned at the both ends of the chamber are higher than those of the others, while without the heaters positioned at the both ends of the chamber, the former tem peratures are lower than the latter temperatures.
  • this invention contributes a great deal to improve the property, especially dyeing property, of filaments.
  • the chamber enclosing a plurality of electric heaters for heating a heating medium temperature controller; and controlling the heaters positioned at the ends of said heater row to reduce their heating power to 30-90 percent of the heating power of the other heaters in said heater row.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Control Of Temperature (AREA)
US876877A 1968-11-26 1969-11-14 Temperature control of a jacketed-chamber of melt spinning machine Expired - Lifetime US3626156A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP43086488A JPS4817486B1 (enrdf_load_stackoverflow) 1968-11-26 1968-11-26

Publications (1)

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US3626156A true US3626156A (en) 1971-12-07

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US876877A Expired - Lifetime US3626156A (en) 1968-11-26 1969-11-14 Temperature control of a jacketed-chamber of melt spinning machine

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US (1) US3626156A (enrdf_load_stackoverflow)
JP (1) JPS4817486B1 (enrdf_load_stackoverflow)
DE (1) DE1959180A1 (enrdf_load_stackoverflow)
GB (1) GB1292118A (enrdf_load_stackoverflow)
NL (1) NL6917437A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742190A (en) * 1970-07-22 1973-06-26 Eurand Spa Apparatus for laboratory testing of sustained release drugs
EP0968810A1 (de) * 1998-07-01 2000-01-05 RIETER AUTOMATIK GmbH Heizsystem für schmelzeführende Teile
US20040124551A1 (en) * 2002-12-13 2004-07-01 Tilman Reutter Spin beam

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1588802B1 (de) * 1967-11-25 1970-10-22 Siemens Ag Programmsteuergeraet fuer Haushaltsmaschinen
CA964819A (en) * 1971-04-16 1975-03-25 Eldon L. Fletcher Melt-spinning device for synthetic fibres
JPS51120396U (enrdf_load_stackoverflow) * 1975-03-28 1976-09-29
JPS5530700U (enrdf_load_stackoverflow) * 1979-04-27 1980-02-28
DE3113495C2 (de) * 1981-04-03 1989-11-02 Davy McKee AG, 6000 Frankfurt Spinnbalken für Schmelzspinnanlagen für synthetische Hochpolymere

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1252813A (en) * 1916-11-11 1918-01-08 Western Electric Co Baking-oven.
US1519287A (en) * 1922-06-05 1924-12-16 Westinghouse Electric Products Electric heating system for conveyer ovens
US1878522A (en) * 1929-08-12 1932-09-20 Gen Electric Baking oven
US2864931A (en) * 1954-01-04 1958-12-16 Universal Winding Co Heating device for use in processing textile yarns
US2952097A (en) * 1953-05-18 1960-09-13 Pittsburgh Plate Glass Co Annealing glass

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1252813A (en) * 1916-11-11 1918-01-08 Western Electric Co Baking-oven.
US1519287A (en) * 1922-06-05 1924-12-16 Westinghouse Electric Products Electric heating system for conveyer ovens
US1878522A (en) * 1929-08-12 1932-09-20 Gen Electric Baking oven
US2952097A (en) * 1953-05-18 1960-09-13 Pittsburgh Plate Glass Co Annealing glass
US2864931A (en) * 1954-01-04 1958-12-16 Universal Winding Co Heating device for use in processing textile yarns

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3742190A (en) * 1970-07-22 1973-06-26 Eurand Spa Apparatus for laboratory testing of sustained release drugs
EP0968810A1 (de) * 1998-07-01 2000-01-05 RIETER AUTOMATIK GmbH Heizsystem für schmelzeführende Teile
US7172399B2 (en) 2002-02-13 2007-02-06 Saurer Gmbh & Co. Kg Spin beam
US20040124551A1 (en) * 2002-12-13 2004-07-01 Tilman Reutter Spin beam

Also Published As

Publication number Publication date
DE1959180A1 (de) 1970-06-18
GB1292118A (en) 1972-10-11
JPS4817486B1 (enrdf_load_stackoverflow) 1973-05-30
NL6917437A (enrdf_load_stackoverflow) 1970-05-28

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