US3152878A - Manufacture of fibers, particularly glass fibers - Google Patents

Manufacture of fibers, particularly glass fibers Download PDF

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Publication number
US3152878A
US3152878A US44204A US4420460A US3152878A US 3152878 A US3152878 A US 3152878A US 44204 A US44204 A US 44204A US 4420460 A US4420460 A US 4420460A US 3152878 A US3152878 A US 3152878A
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United States
Prior art keywords
fibers
wall
orifices
rows
annular
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
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US44204A
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English (en)
Inventor
Levecque Marcel
Mabru Marcel
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.)
Compagnie de Saint Gobain SA
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Compagnie de Saint Gobain SA
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 claimed from FR802312A external-priority patent/FR1242911A/fr
Application filed by Compagnie de Saint Gobain SA filed Critical Compagnie de Saint Gobain SA
Priority to US337659A priority Critical patent/US3252777A/en
Application granted granted Critical
Publication of US3152878A publication Critical patent/US3152878A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C03B37/048—Means for attenuating the spun fibres, e.g. blowers for spinner cups

Definitions

  • the present invention relates to the manufacture of fibers of thermoplastic materials, particularly glass fibers,
  • the gaseous "current is passed into an annular passage surrounding the rotating body, this passage'being defined by the peripheral wall of said body and by an exterior wall;
  • the converging shape given this annular passage results in a better quality of the fibers which are produced, particularly'from the mechanical point of view, and especially because of their resistance to traction orpulling.
  • the shape of the annular channel serves to increase the speed of the gaseous current during its passage in contact with the periphery of the rotating body, thereby regulating its temperature while travelling along the height of the peripheral band or wall of this body, this temperature otherwise tending to decrease toward the bottom of the band. .IIl'fiddltlOl], a better drawing-out action is obtained on the filaments discharged from the lower rows of holes of the peripheral band.
  • the, (gaseous current acting on the threads leaving the orifices of the centrifuge body is channeled only over the upper part of the peripheral band.
  • the exterior wall acting to 'production of the apparatus while obtaining uniform fibers of excellent mechanical quality. Otherwise, that is, if the annular passage extended over the entire height of the peripheral band, only a very small dimension could be given to this height, for the fibers whose numbers increase constantly from top to bottom, would collect in a space too small for their volume and would tend to stick to one another.
  • This disposition of the exterior wall adjacent to only the upper part of the peripheral band of the centrifuge, allows utilization of induction heating of the lower part of the band to regulate its temperature, when use is made of a metallic wall.
  • the invention also contemplates the utilization of a blower ring concentric with the rotating body, and placed outside the wall defining the annular drawing-out gas passage, the gases leaving this ring having the effect of facilitating the evacuation of the fibers and of assuring a complete attenuation thereof.
  • the invention makes possible the obtention of layers or cushions composed of fine, long fibers, characterized by a high degree of elasticity.
  • FIG. 1 is a vertical cross-section of one embodiment of the invention featuring a converging annular passage for the attenuating gases;
  • FIG. 2 is a vertical cross-section of a second embodiment of the invention featuring an exterior wall cooperating with only the. upper part of the peripheral wall of the centrifuge;
  • FIG. 3 is a vertical cross-section of a modified embodiment of that shown in FIG. 2, including a blower ring and induction heating for the lower portion of the peripheral wall;
  • FIG. 4 is a vertical cross-sectional view of a modified embodiment of that shown in FIG. 1, including a blower ring; and p 7
  • FIG. 5 is a vertical cross-sectional view of still another modified embodiment of that shown in FIG. 1, wherein the exterior wall is of limited depth and cooperates with only the upper part of the peripheral wall of the centrifuge.
  • the hollow rotating centrifuge body 1 is provided with a cylindrical peripheral wall 2 having a plurality of rows of orifices 3 therein through which'the molten material which is fed to the interior of the body is projected in the form of threads.
  • the gaseous current at high temperature and velocity issues from combustion chamber 4, which is ring-shaped and is disposed above and surrounds the centrifuge.
  • the chamber may be. provided with a continuous annular slot 5, concentric with the rotating body, through which the gaseous fluid escapes.
  • the gaseous current is channeled, from slot 5 to the last row of projection orifices 3, by an exteriorwall, which is placed in the prolongation of the outer lip of slot 5 and which is inclined with respect to the. peripheral band 2 so as to form a converging annular channel for the hot gaseous blast.
  • This position of the wall has the effect of progressively increasing the speed of the gaseous current from the upper part of the peripheral band to the lower part. This improves the attenuating action on the fibers issuing from the lower rows of orifices which generally are affected by the lowering in temperature of the gaseous blast adjacent thereto.
  • the centrifuge body 1' is provided with a frusto-conical wall 2 having a large number of superposed rows of orifices therein.
  • the annular combustion chamber 4 with the slot 5 therein, is disposed to sweep the hot blast issuing from An outer wall 7, l
  • the gaseous blast on leaving the zone where the wall is placed, presents characteristics of speed and temperatures practically identical with those of the current at the level of outlet lips of annular slot 5.
  • the total heigh of the band may be increased by a value equal to that of the wall 7, without altering the quality of the fibers, hence making possible an increase in the number of rows of orifices and consequently in the output of the apparatus.
  • FIG. 3 illustrates an arrangement analogous to that of FIG. 2, but which comprises, in addition, a blower ring 8 Whose orifice 9 may be continuous and concentric with the rotating body 1". It is desirable to place this hing in such a way that the blower orifices are practically at the level of the lower part of wall 7.
  • the gas jet leav- 'ing orifice 9 causes the induction of outer air and acts on the fibers below the rotating body to facilitate their evacuation.
  • a winding 10 may be provided which is traversed by a high frequency current for the induction heating of the lower part of the peripheral band, in order to maintain this band at a suitable temperature.
  • FIG. 4 shows an arrangement analogous to that shown in FIG. 1, but which comprises, besides, a blower ring 8' whose orifice 9' may be continuous and concentric with the rotating body. It is desirable to place this ring in such a way that the blower orifice is at about the level of the lower part of wall 6.
  • the gas jet leaving orifice 8 causes the induction of outer air and acts on the fibers under the rotating body to facilitate their evacuation.
  • the hollow rotating body 1 resembles that shown in FIGS. 1 and 4, having a cylindrical peripheral band 2 provided with a large number ofrows of orifices 3, through which the melted material is projected in the form of threads.
  • the gaseous current at high temperature and velocity is produced in combustion chamber 4.
  • This chamber is inthe shape of a ring and may be provided with avcontinuous slot 5, concentric with the rotating body, through which the fluid gas escapes.
  • An outer wall 6' placed in the prolongation of the cut er lip of slot 5, channels the gaseous current.
  • the height of this outer wall 6' is less than that of the peripheral band, and is in general between one-third and one-half of the height of band 2;
  • the outer wall 6 is inclined with respect to peripheral band 2, so as to form a converging channel.
  • the gaseous blast upon leaving the zone where the wall is placed, presents characteristicsfof speed and temperature practically identical. to those of the current at the level of the oulet lips of slot 5, except for the vaniation' in speed occasioned by the narrowing of the annular channel at the outlet end. It is therefore seen that the total height of the band 2 may be increased by a value equal to that of the wall, without altering the quality of the fibers, and hence an increase in number of rows of orifices, and therefore increased production of the apparatus.
  • An apparatus for manufacturing fibers of thermoplastic material comprising a hollow centrifuge rotatable about a vertical axis and receiving the heated thermoplastic material in the interior thereof, said centrifuge having a peripheral wall of substantial height provided with a plurality of superposed rows of orifices therein for projecting the fibers therethrough by centrifugal force, a combustion chamber surrounding said centrifuge and provided with an annularly-shaped slot for directing an annular hot gaseous blast onto the fibers issuing therefrom in a direction transverse to the planes of emission thereof, an annular channel for said gaseous blast defined on its inner boundary by said peripheral wall and on its outer boundary by an exterior wall having its upper end substantially coinciding with the outer edge of said slot and its lower end convering towards said peripheral wall to reduce the crosssection of said annular channel towards its outer end, thereby to progressively increase the velocity of the gaseous blast in the course .of its traverse across the rows of orifices from the upper end of the wall, and consequently to attenuate the
  • blower slot is disposed at substantially the same level as the lower end of said exterior wall, to effect the induction of outer air at the outlet of said channel and thereby to facilitate the evacuation of. the fibers thereat.

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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)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US44204A 1959-08-07 1960-07-20 Manufacture of fibers, particularly glass fibers Expired - Lifetime US3152878A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US337659A US3252777A (en) 1959-08-07 1964-01-14 Apparatus for the manufacture of fibers, particularly glass fibers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR802312A FR1242911A (fr) 1958-08-08 1959-08-07 Procédé de fabrication de formes d'impression

Publications (1)

Publication Number Publication Date
US3152878A true US3152878A (en) 1964-10-13

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Family Applications (1)

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US44204A Expired - Lifetime US3152878A (en) 1959-08-07 1960-07-20 Manufacture of fibers, particularly glass fibers

Country Status (5)

Country Link
US (1) US3152878A (fr)
DE (2) DE1194526B (fr)
GB (2) GB887036A (fr)
LU (1) LU39055A1 (fr)
NL (3) NL254642A (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3252777A (en) * 1959-08-07 1966-05-24 Saint Gobain Apparatus for the manufacture of fibers, particularly glass fibers
US3304164A (en) * 1963-02-27 1967-02-14 Saint Gobain Apparatus for producing fine glass fibers
US4203745A (en) * 1978-12-08 1980-05-20 Saint-Gobain Industries Glass fiberization by centrifugal feed of glass into attenuating blast
US20070000286A1 (en) * 2005-07-01 2007-01-04 Gavin Patrick M Fiberizing spinner for the manufacture of low diameter, high quality fibers
US20080229786A1 (en) * 2007-03-21 2008-09-25 Gavin Patrick M Rotary Fiberizer
US20120270718A1 (en) * 2009-12-22 2012-10-25 Saint-Gobain Isover Fibre-forming centrifuge, device and method for forming mineral fibres

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1573116A (en) * 1977-03-11 1980-08-13 Ici Ltd Production of formaldehyde resin fibres by centrifugal spining

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE559125A (fr) * 1956-07-12
GB794319A (en) * 1955-08-17 1958-04-30 Owens Corning Fiberglass Corp Method and apparatus for producing fibres from heat-softenable fibre-forming mineralmaterials
FR1155519A (fr) * 1956-07-02 1958-05-05 Saint Gobain Perfectionnement à la fabrication de fibres notamment de fibres de verre
US2874406A (en) * 1956-07-16 1959-02-24 Sealtite Insulation Mfg Corp Apparatus for manufacturing glass fibers
US2936480A (en) * 1956-05-21 1960-05-17 Owens Corning Fiberglass Corp Method and apparatus for the attenuation of heat softenable materials into fibers
US2981974A (en) * 1957-03-12 1961-05-02 Saint Gobain Apparatus for the production of fibers, particularly glass fibers

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB794319A (en) * 1955-08-17 1958-04-30 Owens Corning Fiberglass Corp Method and apparatus for producing fibres from heat-softenable fibre-forming mineralmaterials
US2936480A (en) * 1956-05-21 1960-05-17 Owens Corning Fiberglass Corp Method and apparatus for the attenuation of heat softenable materials into fibers
FR1155519A (fr) * 1956-07-02 1958-05-05 Saint Gobain Perfectionnement à la fabrication de fibres notamment de fibres de verre
BE559125A (fr) * 1956-07-12
US2874406A (en) * 1956-07-16 1959-02-24 Sealtite Insulation Mfg Corp Apparatus for manufacturing glass fibers
US2981974A (en) * 1957-03-12 1961-05-02 Saint Gobain Apparatus for the production of fibers, particularly glass fibers

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3252777A (en) * 1959-08-07 1966-05-24 Saint Gobain Apparatus for the manufacture of fibers, particularly glass fibers
US3304164A (en) * 1963-02-27 1967-02-14 Saint Gobain Apparatus for producing fine glass fibers
US4203745A (en) * 1978-12-08 1980-05-20 Saint-Gobain Industries Glass fiberization by centrifugal feed of glass into attenuating blast
US20070000286A1 (en) * 2005-07-01 2007-01-04 Gavin Patrick M Fiberizing spinner for the manufacture of low diameter, high quality fibers
US20080229786A1 (en) * 2007-03-21 2008-09-25 Gavin Patrick M Rotary Fiberizer
US8250884B2 (en) 2007-03-21 2012-08-28 Owens Corning Intellectual Capital, Llc Rotary fiberizer
US20120270718A1 (en) * 2009-12-22 2012-10-25 Saint-Gobain Isover Fibre-forming centrifuge, device and method for forming mineral fibres
US8869567B2 (en) * 2009-12-22 2014-10-28 Saint-Gobain Isover Fibre-forming centrifuge, device and method for forming mineral fibres

Also Published As

Publication number Publication date
LU39055A1 (fr) 1961-02-05
NL254643A (fr)
DE1194526B (de) 1965-06-10
GB887035A (en) 1962-01-10
NL254642A (fr)
GB887036A (en) 1962-01-10
DE1127537B (de) 1962-04-12
NL125548C (fr)

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