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US2286903A - Fiber producing mechanism - Google Patents

Fiber producing mechanism Download PDF

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Publication number
US2286903A
US2286903A US209822A US20982238A US2286903A US 2286903 A US2286903 A US 2286903A US 209822 A US209822 A US 209822A US 20982238 A US20982238 A US 20982238A US 2286903 A US2286903 A US 2286903A
Authority
US
United States
Prior art keywords
slot
pressure
chamber
furnace
air
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
US209822A
Other languages
English (en)
Inventor
Stuart M Dockerty
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.)
Owens Corning
Original Assignee
Owens Corning Fiberglas Corp
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
Priority to BE434529D priority Critical patent/BE434529A/xx
Application filed by Owens Corning Fiberglas Corp filed Critical Owens Corning Fiberglas Corp
Priority to US209822A priority patent/US2286903A/en
Priority to CH214370D priority patent/CH214370A/de
Priority to GB15401/39A priority patent/GB529189A/en
Priority to DEA89578D priority patent/DE713702C/de
Priority to FR855192D priority patent/FR855192A/fr
Application granted granted Critical
Publication of US2286903A publication Critical patent/US2286903A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/08—Bushings, e.g. construction, bushing reinforcement means; Spinnerettes; Nozzles; Nozzle plates
    • C03B37/081—Indirect-melting bushings
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/08—Bushings, e.g. construction, bushing reinforcement means; Spinnerettes; Nozzles; Nozzle plates
    • C03B37/09—Bushings, e.g. construction, bushing reinforcement means; Spinnerettes; Nozzles; Nozzle plates electrically heated
    • C03B37/091—Indirect-resistance heating

Definitions

  • This invention relates to the production of fine fibers of thermoplastic material and more particularly to the production of artificial .silicate fibers for textile purposes.
  • Fig. 2 is a vertical section taken on line 22 'of Fig. 1;
  • Fig. .3 is a detailed elevation in' section'of a shown in'FigS. 1 and 2; and Y Fig.4 is a detailed elevation partially in section taken along line 4-4 of Fig. 3.
  • a melting furnace consisting of electrically heated, V-shaped bushing ll composed of platinum or a similar high meltingpoint alloy.
  • This bushing is supported in a refractory shell I 2 composed of sillimanite or sim ilar material in such manner that the feeder tips l3 extend slightly therefrom.
  • a refractory cover HI having a feeding opening l5 isf positioned above the open end of the bushing. Both the bushing and cover are enclosed in insulatingmaterial I 6 which is held in a suitable frame IT.
  • Support rods l8 suspend; the entire furnace from a support, not shown.
  • the entire furnace structure may desirably be .enclosed in an air tight pressure chamber which due to the fully elastic characteristics of thetwo fluid media involved.
  • the object of the present invention to reduce the amount of energyrequired for the production of artificial silicate textile fibers. More specifically the object of this invention is a method by which a, fluid tractive effort may be directly applied to fine streams of molten material and an apparatus for the practicing of this method.
  • This: invention includes among its features a melting furnace and pressure means associated caused to in the melting furnace carrying with it and attenuating. to fibrous form the molten material issuing from the furnace.
  • the invention further features the control of the direction and velocity of fluid medium with respect to the furnace openings and .its path and velocity during
  • a metal shell I9 surrounds the furnace and is provided with a removable top 20 sealed against loss of fluid by gasket material 2
  • Support rods l8 pass thru .stufilng boxes 22 welded to the top' and a feeding tube 23 which passes therethru in alignmentwith opening I5 is provided with closely fitting gates 24 so that charges of cullet or other material to be melted may be introduced from time to time without loss of pressure.
  • Gaskets 25 are provided at the points where the bushing electrodes 26 pass thru the chamber walls so that the only place for any material amount of the pressure fiuid to escape is thru the slot in the bottom of the chamber in alignment with the bushing tips l3.
  • This slot is preferably adjustable as to width and as shown in Figs. 1 and 2 may consist of two plates 21 slidably attached to the bottom plate of the chamber 28 and adjustable with respect to the bushing tips and to one another by means of thumb screws 29 passing thru the walls of the chamber [9 and terminating in flanges 30 engaging with a vertical slot in the plates 3
  • the adjacent edges of these plates are formed into smoothly contoured depending flanges 32 which cooperate to form an elongate nozzle extending downwardly an opening a in the bottom plate 28. Adjustment ofthese plates may be observed thru a window 34 sealed in the wall of the chamber at a point opposite thereto.
  • adjustable plates 35 are provided with flanges 31 01! much greater length which cooperate to form a narrow slot the thickness of which is determined by spacers 36.
  • spacers 36 determine two opposite walls of the slot pivotally attached to one of the flanges, may be used to reduce the cross sectional area of the slotto any desired amount between its inner and outer ends. The position of these spacers may be maintained by clamps, not shown, which engage the outer walls of the flanges 31.
  • gas may be admitted under pressure to the interior of chamber l9 thru the valved supply line 38 from a suitable compressor, boiler or other source, not shown. Any desired pressure may be, maintained within the chamber depending on the rate at which molten material is produced by the furnace II and the diameter of fiber it is desired to prpduce. In the actual production of glass fibers it has been found that compressed air at from three to ten pounds gauge pressure width of the slot.
  • the plates 21 may .and,-since they are 10 be moved closer together-thus reducing the area of the slot and the amount of air or other pressure fluid consumed. It the pressure within the subsequent operation of the equipment they can readily be cleared-by temporarily increasing the Another way of further reducing the area of the slot is illustrated in Figs. 3 and 4. Since the length of the slot at the top must be, substantially coextensive with the length of the bushing it can onlybe reduced to a certain extent 'by moving the plates toward one another.
  • adjustable spacers 36 may be used in conjunction therewith to form an elongated slot of gradually reducing cross section having an area at its exit end only a fraction of the area of the inner end adjacent thebushing tips.
  • the area of the slot may be further reduced while maintaining the same maximum velocity of the issuing fluid medium. Since such an apparatus as this produces substantially continuous fibers, often operating for several hours withouta break, the velocity of the fluid as it passes the tips need be only enodgh to insure clearing of the material when a slug forms and the maximum tractive effort attenuating the fiber may as well be applied, several inches below the tips as at a point more closely adjacent thereto.
  • Various operating characteristics of the apparatus will determine the extent. to-which the area of the slot may be reduced in this way, but it may be from one-fourth to onehalf that of the inner end. 1
  • I claim: 1. The method of producing fibrousmaterial which comprises flowing molten material in a fine stream, contacting and completely surrounding said stream while still molten with a fluid medium confined under pressure, flowing 'said compressed fluid medium while in contact therewith to exert a tracti've efiort-on the fine stream over an appreciable length thereof and rapidly accelerating the velocity of said stream and fluid medium by expanding sai-d fluid medium thru an orificawhile. maintaining it in contact with said stream to attenuate said molten material to fibrous form.
  • thermoplastic material which comprises melting said material, flowing a line stream of said material directly into a gaseous atmosphere confined at superatmospheric pressure, progressiveiy cooling and attenuating said stream by mowing said atmosphere in the direction of flow of and in contact with said stream for an appreciable distance, and progressively increasing the tractive eiIort applied to the surface of said stream as it is attenuated until it has set in fibrous form.
  • the method of produclngflbrous material which comprises flowing fine streams of molten material at a plurality of spaced points directly into a confined body of gas under superatmospheric pressure, flowing said compressed gas in the direction of flow of said streams and in con-.
  • a feeder opening in the x 2,286,905 stream to attenuate it to fibrous form by passing terial in combination a melting furnace having a plurality of feeder openings arranged in a straight line in the bottom thereof, a pressure chamber associated with said furnace andadapted to maintain a superatmospheric pressure about c said feeder openings, means for supplying fluid under pressure to said chamber and spaced plates in'the bottom of said chamber'forming a slot therein coextensive with the line of said feeder openings, said plates being adjustable to vary the width of said slot.
  • a melting furnace having a plurality of feeder openings arranged in a straight line in the bottom thereof, a pressure chamber associated with said furnace and en- .closing said feeder openings, means for supplying fluid under pressure to said chamber and spaced plates in the bottom of said chamber forming a slot therein coextensive with the line of said feederopenings, said plates being adiiistable to vary the width of said slot and hav-.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Fibers (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Nonwoven Fabrics (AREA)
US209822A 1938-05-24 1938-05-24 Fiber producing mechanism Expired - Lifetime US2286903A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE434529D BE434529A (de) 1938-05-24
US209822A US2286903A (en) 1938-05-24 1938-05-24 Fiber producing mechanism
CH214370D CH214370A (de) 1938-05-24 1939-05-23 Verfahren und Vorrichtung zum Erzeugen von Fasern aus geschmolzenem Glas und andern in der Hitze plastischen Stoffen.
GB15401/39A GB529189A (en) 1938-05-24 1939-05-24 Improvements in or relating to the production of artificial fibres
DEA89578D DE713702C (de) 1938-05-24 1939-05-24 Behaelter zur Aufnahme von geschmolzenem Glas
FR855192D FR855192A (fr) 1938-05-24 1939-05-24 Procédé et appareil de production de fibres de verre ou matière plastique analogue

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US209822A US2286903A (en) 1938-05-24 1938-05-24 Fiber producing mechanism

Publications (1)

Publication Number Publication Date
US2286903A true US2286903A (en) 1942-06-16

Family

ID=22780442

Family Applications (1)

Application Number Title Priority Date Filing Date
US209822A Expired - Lifetime US2286903A (en) 1938-05-24 1938-05-24 Fiber producing mechanism

Country Status (6)

Country Link
US (1) US2286903A (de)
BE (1) BE434529A (de)
CH (1) CH214370A (de)
DE (1) DE713702C (de)
FR (1) FR855192A (de)
GB (1) GB529189A (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451086A (en) * 1941-12-05 1948-10-12 Corning Glass Works Apparatus for melting and casting glass
US2518744A (en) * 1946-03-21 1950-08-15 Glass Fibers Inc Apparatus for making staple fiber
US2777254A (en) * 1952-10-22 1957-01-15 Owens Corning Fiberglass Corp Coated refractory for contacting molten glass and method of making same
US2781411A (en) * 1953-06-10 1957-02-12 Jenaer Glaswerk Schott & Gen Process and apparatus for purifying glass
US2814657A (en) * 1953-11-23 1957-11-26 Lof Glass Fibers Co Method and apparatus for heating glass
US2877280A (en) * 1953-06-11 1959-03-10 Jenaer Glaswerk Schott & Gen Process for purifying glass
US2974359A (en) * 1955-02-15 1961-03-14 Owens Corning Fiberglass Corp Pressurized system for producing fibers
US3049751A (en) * 1952-12-02 1962-08-21 Owens Corning Fiberglass Corp Method and apparatus for forming fibers
US3063093A (en) * 1959-07-22 1962-11-13 Johns Manville Method and apparatus for producing glass fibers
US3134659A (en) * 1959-08-24 1964-05-26 Johns Manville Glass melting apparatus and method useful for the production of glass fibers
US3134828A (en) * 1960-01-18 1964-05-26 Johns Manville Method for heating glass melting pot
FR2506288A1 (fr) * 1981-05-19 1982-11-26 Saint Gobain Vetrotex Filiere pour la fabrication par etirage par fluide de fibres de verre discontinues
US4401451A (en) * 1979-11-20 1983-08-30 Societe Vetrotex Saint-Gobain Process and apparatus for the manufacture of discontinuous glass fibers

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR957993A (de) * 1943-11-24 1950-03-02
BE511600A (de) * 1952-01-14

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2451086A (en) * 1941-12-05 1948-10-12 Corning Glass Works Apparatus for melting and casting glass
US2518744A (en) * 1946-03-21 1950-08-15 Glass Fibers Inc Apparatus for making staple fiber
US2777254A (en) * 1952-10-22 1957-01-15 Owens Corning Fiberglass Corp Coated refractory for contacting molten glass and method of making same
US3049751A (en) * 1952-12-02 1962-08-21 Owens Corning Fiberglass Corp Method and apparatus for forming fibers
US2781411A (en) * 1953-06-10 1957-02-12 Jenaer Glaswerk Schott & Gen Process and apparatus for purifying glass
US2877280A (en) * 1953-06-11 1959-03-10 Jenaer Glaswerk Schott & Gen Process for purifying glass
US2814657A (en) * 1953-11-23 1957-11-26 Lof Glass Fibers Co Method and apparatus for heating glass
US2974359A (en) * 1955-02-15 1961-03-14 Owens Corning Fiberglass Corp Pressurized system for producing fibers
US3063093A (en) * 1959-07-22 1962-11-13 Johns Manville Method and apparatus for producing glass fibers
US3134659A (en) * 1959-08-24 1964-05-26 Johns Manville Glass melting apparatus and method useful for the production of glass fibers
US3134828A (en) * 1960-01-18 1964-05-26 Johns Manville Method for heating glass melting pot
US4401451A (en) * 1979-11-20 1983-08-30 Societe Vetrotex Saint-Gobain Process and apparatus for the manufacture of discontinuous glass fibers
FR2506288A1 (fr) * 1981-05-19 1982-11-26 Saint Gobain Vetrotex Filiere pour la fabrication par etirage par fluide de fibres de verre discontinues
EP0066506A1 (de) * 1981-05-19 1982-12-08 Vetrotex Saint-Gobain Verfahren und Vorrichtung zur Herstellung von diskontinuierlichen Glasfasern

Also Published As

Publication number Publication date
DE713702C (de) 1941-11-13
FR855192A (fr) 1940-05-04
CH214370A (de) 1941-04-30
BE434529A (de)
GB529189A (en) 1940-11-15

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