US3031717A - Centrifugal fiber forming apparatus - Google Patents

Centrifugal fiber forming apparatus Download PDF

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US3031717A
US3031717A US718654A US71865458A US3031717A US 3031717 A US3031717 A US 3031717A US 718654 A US718654 A US 718654A US 71865458 A US71865458 A US 71865458A US 3031717 A US3031717 A US 3031717A
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orifices
internal
external
diameter
openings
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US718654A
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Levecque Marcel
Piot Paul
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Compagnie de Saint Gobain SA
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Compagnie de Saint Gobain SA
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    • 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
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/04—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor
    • C03B37/045—Construction of the spinner cups
    • 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
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/04—Manufacture of glass fibres or filaments by using centrifugal force, e.g. spinning through radial orifices; Construction of the spinner cups therefor
    • C03B37/047—Selection of materials for the spinner cups

Definitions

  • the present invention relates to the manufacture of fibres from thermoplastic materials in the viscous state and particularly of glass fibres.
  • the peripheral band and/ or the side wall of the distributing device is made of two elements in contact with each other, the outside element being made of a refractory material, and more particularly of a refractory alloy, ensuring good mechanical performance, and the internal element offering the maximum resistance to wear and permitting substantially constant feed conditions whatever may be the extent of wear of the external element.
  • the quantity of material projected through the openings of the peripheral band and/or of the distributing device is kept substantially constant during the life of said band or of said distributing device, the diameter of the openings which governs the feed conditions remaining constant and equal to the diameter suitable for giving themost favourable feed conditions.
  • the external parts of the peripheral band and/ or of the wall of the distributing device are made of a refractory aloy whilst the internal parts are coated with a metal or alloy chemically resistant to glass at working temperature, such as platinum, platium-rhodium, tungsten, molybdenum or platinum-nickel.
  • the external and the internal part can be directly fitted one over the other, or fitted with interposition of a suitable intermediary material.
  • the openings of the internal parts may be of a diameter less than that of the openings of the external parts.
  • the external parts of refractory alloy of the peripheral band can have openings of about 1 mm. diameter and the internal parts of glass-resistant alloy can have openings of about 0.5 to 0.6 mm. diameter.
  • the internal parts may be thinner than the external parts.
  • FIG. 1 is a cross-section through the rotating body and its associated distributing device.
  • FIG. 2 is a section showing cylindrical orifices
  • FIG. 3 is a similar section showing tapering orifices.
  • the peripheral band of the rotating body is made up of an external part 3 of tates Patent 3,031,717 IC Patented May 1, 1962 refractory material, preferably a refractory alloy, of good mechanical characteristics, and an internal part 4 of a wear-resistant material such as platinum or platinum-alloy.
  • the diameter of the openings 5 of part 4 is inferior to that of the openings 6 of part 3 and it must be noted that the rate of projection of glass is determined by the size of openings 5.
  • the openings 6 may be cylindrical, as shown in FIG. 2, or tapering as shown in FIG. 3.
  • the distributing device 2 may be similarly constructed and comprises an external part 7 ensuring good mechanical behaviour and an internal wear-resistant part 8.
  • the openings 9 and 10 provided in the internal part 8 and in the external part 7 respectively may be arranged as described above for the openings 5 and 6 of the peripheral band.
  • Apparatus for producing fibers from molten thermoplastic viscous material including a centrifuging body having a peripheral wall provided with a plurality of projection orifices, said peripheral wall being formed of two elements in contact with each other, the external element being made of a refractory alloy, ensuring good mechanical performance, and the internal element offering the maximum resistance to wear in presence of the molten thermoplastic material, and with the orifices in the internal element having a smaller diameter than those in the external element so that the diameter of the orifices located in said elements remain practically unchanged over long periods of use.
  • An apparatus as set forth in claim 1 acting as a distributing organ in conjunction with a surrounding hollow centrifuge provided with a plurality of rows of orifices in the lateral wall thereof, said organ being located inside said last-mentioned centrifuge and spaced from said lastmentioned wall.
  • the external element is a refractory alloy and the internal element is a metal of the group consisting of platinum, platinum-rhodium, tungsten, molybdenum, and platinumnickel.
  • Apparatus for producing fibers from a supply body of molten glass including an outer centrifuging body having a peripheral wall provided with a plurality of outlet orifices, said peripheral wall being formed of a refractory alloy resistant to heat, warpage and chemical attack, an internal element afiixed to the inside surface of the peripheral wall of the centrifuging body and provided with a series of orifices of smaller diameter than said orifices in said peripheral wall of the centrifuging body and in axial alignment therewith, said internal element offering maximum resistance to heat, chemical attack and wear in the presence of the molten glass, the refractory alloy constituting the peripheral wall of the centrifuging body next to the orifices of the internal element and therebetween serving to support and maintain the metal of the internal element against displacement and warpage in the presence of high temperature and the revolution of the peripheral wall of the outer centrifuging body and the internal element at high speeds.

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  • 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)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Description

May 1, 1962 M. LEVECQUE ETAL 3,031,717
CENTRIFUGAL FIBER FORMING APPARATUS Filed March 3, I958 INVENTORS MARCEL LEVECQUE PAUL PIOT ATTORNEY CENTRIFUGAL FIBER FGRMING APPARATUS Marcel Levecque, Saint-Gratien, and Paul Piot, Deuil,
France, assignors to Compagnie de Saint-Gobain, a corporation of France Filed Mar. 3, 1958, Ser. No. 718,654 Claims priority, application France Mar. 8, 1957 9 Ciaims. (Cl. 18--2.6)
The present invention relates to the manufacture of fibres from thermoplastic materials in the viscous state and particularly of glass fibres.
In this manufacture, it is known to use a hollow body into which the molten material is fed and the periphery of which is provided with orifices distributed in one or several rows. This hollow body being rotated at big. speed around its own axis, the material is projected by centrifugal force out of the orifices of the peripheral band in the form of streamlets which then undergo a drawing effect which transforms them into fibres.
It is also known to provide within, and co-axial with, the rotating body, a device shaped like a tank or trough of perforated side-walls into which the material is fed and serving to project said material onto the inside face of the peripheral band of the rotating body, and to distribute it evenly over the whole height of said band.
According to the present invention, the peripheral band and/ or the side wall of the distributing device is made of two elements in contact with each other, the outside element being made of a refractory material, and more particularly of a refractory alloy, ensuring good mechanical performance, and the internal element offering the maximum resistance to wear and permitting substantially constant feed conditions whatever may be the extent of wear of the external element.
In the present invention, the quantity of material projected through the openings of the peripheral band and/or of the distributing device is kept substantially constant during the life of said band or of said distributing device, the diameter of the openings which governs the feed conditions remaining constant and equal to the diameter suitable for giving themost favourable feed conditions.
In this connection it must be noted that the applicants have observed that, for an opening of 0.8 mm., a wear of the order of 0.1 mm. may bring about a feed increase of more than 50%.
According to an embodiment of the present invention, the external parts of the peripheral band and/ or of the wall of the distributing device are made of a refractory aloy whilst the internal parts are coated with a metal or alloy chemically resistant to glass at working temperature, such as platinum, platium-rhodium, tungsten, molybdenum or platinum-nickel.
The external and the internal part can be directly fitted one over the other, or fitted with interposition of a suitable intermediary material.
If desired, the openings of the internal parts may be of a diameter less than that of the openings of the external parts. Thus, the external parts of refractory alloy of the peripheral band can have openings of about 1 mm. diameter and the internal parts of glass-resistant alloy can have openings of about 0.5 to 0.6 mm. diameter. The internal parts may be thinner than the external parts.
In the annexed drawings showing, by way of example, a preferred embodiment of the invention:
FIG. 1 is a cross-section through the rotating body and its associated distributing device.
FIG. 2 is a section showing cylindrical orifices, and
FIG. 3 is a similar section showing tapering orifices.
Referring now to FIG. 1, 1 is the rotating body and 2 its associated distributing device. The peripheral band of the rotating body is made up of an external part 3 of tates Patent 3,031,717 IC Patented May 1, 1962 refractory material, preferably a refractory alloy, of good mechanical characteristics, and an internal part 4 of a wear-resistant material such as platinum or platinum-alloy. The diameter of the openings 5 of part 4 is inferior to that of the openings 6 of part 3 and it must be noted that the rate of projection of glass is determined by the size of openings 5.
The openings 6 may be cylindrical, as shown in FIG. 2, or tapering as shown in FIG. 3.
The distributing device 2 may be similarly constructed and comprises an external part 7 ensuring good mechanical behaviour and an internal wear-resistant part 8. The openings 9 and 10 provided in the internal part 8 and in the external part 7 respectively may be arranged as described above for the openings 5 and 6 of the peripheral band.
It must be understood that the present invention is not limited to the embodiment above described and illustrated which has been selected only by way of example.
What is claimed is:
1. Apparatus for producing fibers from molten thermoplastic viscous material including a centrifuging body having a peripheral wall provided with a plurality of projection orifices, said peripheral wall being formed of two elements in contact with each other, the external element being made of a refractory alloy, ensuring good mechanical performance, and the internal element offering the maximum resistance to wear in presence of the molten thermoplastic material, and with the orifices in the internal element having a smaller diameter than those in the external element so that the diameter of the orifices located in said elements remain practically unchanged over long periods of use.
2. An apparatus of the type set forth in claim 1 wherein the thickness of the external element is greater than the thickness of the internal element.
3. An apparatus of the type set forth in claim l where in the orifices in the internal element have a cylindrical shape while the orifices of the external element have a frusto conical shape.
4. An apparatus of the type set forth in claim 1 wherein the external and internal elements are directly fitted one over the other.
5. An apparatus of the type set forth in claim 1 wherein the external and internal elements are bonded one on the other.
6. An apparatus of the type set forth in claim 1 wherein the external and internal elements are bonded one on the other with a suitable material interposed between said elements.
7. An apparatus as set forth in claim 1 acting as a distributing organ in conjunction with a surrounding hollow centrifuge provided with a plurality of rows of orifices in the lateral wall thereof, said organ being located inside said last-mentioned centrifuge and spaced from said lastmentioned wall.
8. An apparatus according to claim 1 wherein the external element is a refractory alloy and the internal element is a metal of the group consisting of platinum, platinum-rhodium, tungsten, molybdenum, and platinumnickel.
9. Apparatus for producing fibers from a supply body of molten glass including an outer centrifuging body having a peripheral wall provided with a plurality of outlet orifices, said peripheral wall being formed of a refractory alloy resistant to heat, warpage and chemical attack, an internal element afiixed to the inside surface of the peripheral wall of the centrifuging body and provided with a series of orifices of smaller diameter than said orifices in said peripheral wall of the centrifuging body and in axial alignment therewith, said internal element offering maximum resistance to heat, chemical attack and wear in the presence of the molten glass, the refractory alloy constituting the peripheral wall of the centrifuging body next to the orifices of the internal element and therebetween serving to support and maintain the metal of the internal element against displacement and warpage in the presence of high temperature and the revolution of the peripheral wall of the outer centrifuging body and the internal element at high speeds.
References Cited in the file of this patent UNITED STATES PATENTS 1,592,140 Horton et al. July 13, 1926 2,031,083 Weller Feb. 18, 1936 2,133,236 Slayter et al Oct. 11, 1938 Richardson Feb. 13, 1940 Slayter et a1. Sept. 9, 1952 Heymes et a1; Jan. 13, 1953 Siefert et al Jan. 15, 1957 Kleist et a1 Aug. 23, 1960 FOREIGN PATENTS Australia Dec. 27, 1956 France Oct. 11, 1956 OTHER REFERENCES Glass Fibersf by De Dani, in Chemistry and Industry, pages 482-489, at pages 482 and 483, April 30, 1955 issue. Published by the Society of Chemical Industry, London,
15 England.

Claims (1)

1. APPARATUS FOR PRODUCING FIBRES FROM MOLTEN THERMOPLASTIC VISCOUS MATERIAL INCLUDING A CENTRIFUGING BODY HAVING A PERIPHERAL WALL PROVIDED WITH A PLURALITY OF PROJECTION OFIFICES, SAID PREIPHERAL WALL BEING FORMED OF TWO ELEMENTS IN CONTACT WITH EACH OTHER, THE EXTERNAL ELEMENT BEING MADE OF A REFRACTORY ALLOY, ENSURING GOOD MECHANICAL PERFORMANCE, AND THE INTERNAL ELEMENT OFFERING THE MAXIMUM RESISTANCE TO WEAR IN PRESENCE OF THE MOLTEN THERMOPLASTIC MATERIAL, AND WITH THE ORIFICES IN THE INTERNAL ELEMENT HAVING A SMALLER DIAMETER OF THE OIRIFICES LOEXTERNAL ELEMENT SO THAT THE DIAMETER OF THE ORIFICES LOCATED IN SAID ELEMENTS REMAIN PRACTICALLY UNCHANGED OVER LONG PERIODS OF USE.
US718654A 1957-03-08 1958-03-03 Centrifugal fiber forming apparatus Expired - Lifetime US3031717A (en)

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CH (1) CH342707A (en)
DE (1) DE1092605B (en)
FR (1) FR1169211A (en)
GB (1) GB835647A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3316074A (en) * 1962-11-06 1967-04-25 Saint Gobain Metallic elements adapted to come in contact with melted glass
US3318694A (en) * 1963-10-30 1967-05-09 Owens Corning Fiberglass Corp Nickel chrome alloy
US3372014A (en) * 1965-06-07 1968-03-05 United States Gypsum Co Apparatus for forming fibers
US4511383A (en) * 1983-07-14 1985-04-16 Owens-Corning Fiberglas Corporation Method for producing glass fiber
EP0235897A1 (en) * 1986-01-22 1987-09-09 Sanei-Kisetsu Co., Ltd. Apparatus for manufacturing short inorganic fibres
US5118332A (en) * 1991-06-04 1992-06-02 Owens-Corning Fiberglas Corporation Composite brazed spinner
US5312469A (en) * 1992-03-25 1994-05-17 Owens-Corning Fiberglas Technology Inc. Centrifuging with protected fiberforming cones
US5417735A (en) * 1993-12-23 1995-05-23 Mcgarry; Dennis L. Interdiffused chromium/nickel corrosion-resistant coating for fiberglass spinner bores
EP0668122A1 (en) * 1994-02-22 1995-08-23 SEVA, société dite, Method of manufacturing a container element for a fluid
US5846284A (en) * 1996-07-31 1998-12-08 Owens Corning Fiberglas Technology, Inc. Spinner with eyelets having multiple orifices

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1274924A (en) * 1960-06-24 1961-11-03 Saint Gobain Metal parts or parts intended to come into contact with molten glass

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1592140A (en) * 1924-08-22 1926-07-13 Peake Wire-spinning machine
US2031083A (en) * 1933-01-21 1936-02-18 Baker & Co Inc Guide or support for molten glass
US2133236A (en) * 1933-12-26 1938-10-11 Owens Illinois Glass Co Glass wool and method and apparatus for making same
US2190296A (en) * 1938-08-27 1940-02-13 Westinghouse Electric & Mfg Co Guide for molten material
US2609566A (en) * 1948-12-31 1952-09-09 Owens Corning Fiberglass Corp Method and apparatus for forming fibers
US2624912A (en) * 1946-05-31 1953-01-13 Saint Gobain Process and apparatus for the production of fibers from thermoplastics
FR1124487A (en) * 1955-02-28 1956-10-12 Saint Gobain Further development in the manufacture of fibers, in particular glass fibers
US2777254A (en) * 1952-10-22 1957-01-15 Owens Corning Fiberglass Corp Coated refractory for contacting molten glass and method of making same
US2949631A (en) * 1956-12-06 1960-08-23 Owens Corning Fiberglass Corp Apparatus for forming fibers

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1592140A (en) * 1924-08-22 1926-07-13 Peake Wire-spinning machine
US2031083A (en) * 1933-01-21 1936-02-18 Baker & Co Inc Guide or support for molten glass
US2133236A (en) * 1933-12-26 1938-10-11 Owens Illinois Glass Co Glass wool and method and apparatus for making same
US2190296A (en) * 1938-08-27 1940-02-13 Westinghouse Electric & Mfg Co Guide for molten material
US2624912A (en) * 1946-05-31 1953-01-13 Saint Gobain Process and apparatus for the production of fibers from thermoplastics
US2609566A (en) * 1948-12-31 1952-09-09 Owens Corning Fiberglass Corp Method and apparatus for forming fibers
US2777254A (en) * 1952-10-22 1957-01-15 Owens Corning Fiberglass Corp Coated refractory for contacting molten glass and method of making same
FR1124487A (en) * 1955-02-28 1956-10-12 Saint Gobain Further development in the manufacture of fibers, in particular glass fibers
US2949631A (en) * 1956-12-06 1960-08-23 Owens Corning Fiberglass Corp Apparatus for forming fibers

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3316074A (en) * 1962-11-06 1967-04-25 Saint Gobain Metallic elements adapted to come in contact with melted glass
US3318694A (en) * 1963-10-30 1967-05-09 Owens Corning Fiberglass Corp Nickel chrome alloy
US3372014A (en) * 1965-06-07 1968-03-05 United States Gypsum Co Apparatus for forming fibers
US4511383A (en) * 1983-07-14 1985-04-16 Owens-Corning Fiberglas Corporation Method for producing glass fiber
EP0235897A1 (en) * 1986-01-22 1987-09-09 Sanei-Kisetsu Co., Ltd. Apparatus for manufacturing short inorganic fibres
US4808097A (en) * 1986-01-22 1989-02-28 Sanei-Kisetsu Co., Ltd. Apparatus for manufacturing short inorganic fibers
US5118332A (en) * 1991-06-04 1992-06-02 Owens-Corning Fiberglas Corporation Composite brazed spinner
US5312469A (en) * 1992-03-25 1994-05-17 Owens-Corning Fiberglas Technology Inc. Centrifuging with protected fiberforming cones
US5417735A (en) * 1993-12-23 1995-05-23 Mcgarry; Dennis L. Interdiffused chromium/nickel corrosion-resistant coating for fiberglass spinner bores
EP0668122A1 (en) * 1994-02-22 1995-08-23 SEVA, société dite, Method of manufacturing a container element for a fluid
FR2716398A1 (en) * 1994-02-22 1995-08-25 Seva Method of manufacturing a fluid enclosure element.
US5846284A (en) * 1996-07-31 1998-12-08 Owens Corning Fiberglas Technology, Inc. Spinner with eyelets having multiple orifices

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GB835647A (en) 1960-05-25
FR1169211A (en) 1958-12-24
CH342707A (en) 1959-11-30
BE565541A (en)
DE1092605B (en) 1960-11-10

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