EP0119124B1 - Amélioration de la répartition de fibres dans un feutre - Google Patents

Amélioration de la répartition de fibres dans un feutre Download PDF

Info

Publication number
EP0119124B1
EP0119124B1 EP84400358A EP84400358A EP0119124B1 EP 0119124 B1 EP0119124 B1 EP 0119124B1 EP 84400358 A EP84400358 A EP 84400358A EP 84400358 A EP84400358 A EP 84400358A EP 0119124 B1 EP0119124 B1 EP 0119124B1
Authority
EP
European Patent Office
Prior art keywords
fibres
conveyor
fibers
felt
jets
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
Application number
EP84400358A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0119124A1 (fr
Inventor
Francis Mosnier
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.)
Saint Gobain Isover SA France
Original Assignee
Saint Gobain Isover SA France
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 Saint Gobain Isover SA France filed Critical Saint Gobain Isover SA France
Publication of EP0119124A1 publication Critical patent/EP0119124A1/fr
Application granted granted Critical
Publication of EP0119124B1 publication Critical patent/EP0119124B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/724—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged forming webs during fibre formation, e.g. flash-spinning
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4218—Glass fibres
    • D04H1/4226—Glass fibres characterised by the apparatus for manufacturing the glass fleece
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/736—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged characterised by the apparatus for arranging fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H17/00—Felting apparatus

Definitions

  • the invention relates to techniques for forming fiber felts in which the fibers are produced by centrifugation. More particularly, the invention relates to those of these techniques in which the fibers are produced by directing the stretchable material from the outside to the periphery of one or more centrifugation wheels and are entrained by a gas current along the peripheral wall of the centrifuge wheel (s).
  • the mode of reception of the fibers in order to form felts in the context of these techniques includes a certain number of very specific provisions for this type of drawing.
  • the wheels are usually arranged so that their axis of rotation is horizontal or close to this position.
  • the gas streams which participate in the formation of the fibers by entraining them, but also by exerting a drawing action near the centrifuge wheels, are usually generated parallel to the axis of rotation. It is also preferable to ensure that the fibers, whatever the area of the wheel where they originate, undergo a uniform treatment. For this, the gas stream must run along the wall of the wheel at a short distance and being approximately parallel to the peripheral wall. The gas streams under these conditions are, at least originally, close to the horizontal.
  • centrifugation techniques even in their most efficient modes of implementation, such as those described in the aforementioned patent application, do not make it possible to completely avoid the projection of fiberized products immediately below the fiberizing device or slightly in front of it on the path followed by the gas stream carrying the fibers.
  • the reception of the fibers in order to form the felt is therefore advantageously located at a certain distance from the centrifuge device. In this way a dynamic sorting takes place which automatically leads to the elimination of the coarsest infibrated particles.
  • a pit is usually arranged under the centrifuge to receive the infibers, while the reception, constituted by a perforated conveyor, is placed at a distance which depends on the characteristics of the gas flow carrying the fibers.
  • the fibers carried by the gas streams are directed to an elongated receiving chamber in the general direction of these streams. In this chamber, the gas streams are gradually slowed down. This avoids an excessively brutal impact of the fibers with the conveyor which closes the reception chamber at its base.
  • the slowing down of the gas streams carrying the fibers is due to the entrainment of a mass of surrounding air, a mass which increases as the gaseous current "meter" progresses.
  • the conveyor extends in a direction which corresponds roughly to that followed by the gas stream.
  • the quantity of fibers necessary can thus be from 15 to 20% , more important when the distribution is not satisfactory.
  • the mechanical properties of the products are also very significantly influenced by the homogeneity of the distribution of the fibers.
  • the distribution of the fibers on the felt prepared in the traditional way is not satisfactory.
  • the invention proposes to improve this distribution.
  • the use of these additional jets is characterized in that the jets are emitted in the immediate vicinity of the origin of the current carrying the fibers so that their modification is as effective as possible.
  • the emission of additional jets is located in the receiving chamber at a distance from the conveyor.
  • the fiber drawing technique and the type of installation in which the invention is implemented are of another nature, as we have indicated above, according to the invention then, the additional gaseous jets have no not intended to spread the gas stream carrying the fibers or to vary its direction periodically, finally, still according to the invention, the emission of the additional jets is located near the conveyor and not at the origin of the gas stream in the reception room.
  • jets emitted can be very energetic, in other words they can be emitted under high pressure, but it has been found experimentally that jets at low pressure also make it possible to obtain very satisfactory results and at lower cost.
  • the modification of the trajectory of the gaseous current carrying fibers, in these techniques, requires a relatively high energy expenditure which is not the case of the invention.
  • the emission of the additional jets takes place along the side walls bordering the conveyor, in other words substantially in the direction of propagation of the current carrying the fibers.
  • the jets are directed towards the stream transverse to its trajectory, perpendicularly if not at a pronounced angle with this trajectory.
  • the angle of the additional jets with the direction of the gas streams carrying the fibers, or that with the side walls of the receiving chamber, which is equivalent is too large l
  • the effect of these jets on the distribution decreases and can even cancel out.
  • the angle of the jets with the walls is advantageously less than 20 °.
  • the energy communicated to the additional jets is relatively low. We have seen that the pressure from the jet to the orifice does not need to be high.
  • the volume of gas required is also relatively small compared to the mass of gas carrying the fibers which is sucked under the conveyor. This quantity of blown gas is adjusted according to the intensity of the effect to be obtained. In a simplified manner, it can be considered, within certain limits, that the effect is all the more marked the greater the quantity blown.
  • the emission conditions are such that the gas jets have a speed of the order of that of the gas streams, at the same level, or substantially greater.
  • the additional jets are emitted along the gas stream. They do not need to cover the entire height of the side walls. Their location at the mean level of the gas flow carrying the fibers is sufficient.
  • these additional jets can advantageously be slightly offset towards the conveyor. The blowing should not however be carried out along the conveyor which could lead to completely sweeping the fibers which are deposited. Preferably a minimum distance of 0.3 m is left between the conveyor and the point of emission closest to the conveyor.
  • the part of the installation shown in FIG. 1 essentially comprises the device for forming the fibers and the receiving chamber in which the felt is formed.
  • the fiber-forming device consists of a set of three wheels 1, 2, 3 rotating in opposite directions to each other, and rings 4, 5 generating a gas stream at the periphery of the fiberizing wheels.
  • the material is supplied from an oven or a crucible 6.
  • the material flows through a chute 7 onto the first wheel 1 called the distribution wheel because its main role is to accelerate the material and that few fibers detach from it.
  • the material accelerated in contact with the wheel 1 is sprayed onto the wheel 2. Part of the material adheres to this wheel then, under the effect of centrifugation, is sprayed in the form of fine filaments. The other part of the material is returned to the wheel 3 where it adheres and forms filaments in the same way as for the wheel 2.
  • the filaments which detach from the wheels are entrained (and drawn when they are in suitable conditions) by a gas stream blown from the blowing rings 4 and 5 which surround the wheels from which the fibers detach.
  • an additional crown can surround, at least partially, the wheel 1 when the latter is also able to produce fibers.
  • the device shown is typical of an installation for the formation of mineral fibers, in particular for materials whose melting temperature is particularly high: rock basalt, foundry slag, etc ... Similar installations including centrifugal devices with one, two or four wheels are also commonly used for this kind of production.
  • Means are normally arranged in the vicinity of the wheels, or on the wheels themselves, for spraying a composition of a binder on the fibers entrained by the gas stream. These means are not shown.
  • a hopper 8 which collects the infibrated particles projected directly from the centrifuge device, where those which, because they are too dense, "sediment before reaching the receiving conveyor 9.
  • the horizontal distance separating the fiber-forming device from the conveyor 9 is of the order of 2 to 3 m, which allows a relatively large elimination of fiber particles or insufficiently fiber particles.
  • the receiving chamber in which the fibers and the gas streams carrying them circulate is practically closed.
  • the only openings allowing the introduction of a significant quantity of outside air are located behind the centrifuge and at the level of the hopper 8. These openings and the induced air which they allow to enter facilitate the good development of the flow gas in the reception room.
  • This receiving chamber is closed at its base by the conveyor 9 and laterally, along the conveyor, by walls 10 and 11.
  • the walls 10 and 11 are advantageously movable in rotation and move in the same direction as the conveyor 9.
  • the chamber is also closed at its upper part which is not shown in Figure 1, for reasons of clarity.
  • Suction boxes 12 and 13 are arranged under the conveyor 9 over the entire length. These boxes which are kept in depression with respect to the receiving chamber evacuate the gases carrying the fibers, after these have been retained on the conveyor.
  • Figure 2 roughly shows the path followed by the gases and fibers.
  • the movement of the gas streams flowing in the receiving chamber is controlled by the drawing gases emitted along the centrifuge wheels. It is controlled by the suction maintained under the receiving conveyor. Added to these effects are those which result from the induction of ambient air.
  • the amount of gas passing through the conveyor 9 is much greater than that emitted by the blowing rings 4 and 5.
  • the gas sucked into the boxes 12 and 13 enters the receiving chamber through openings made to allow entry "induced" air.
  • the openings in question are located mainly at the level of the hopper 8 and on the wall of the chamber on which the fiberizing device is located.
  • the arrows I represent the main lines of the induced air flow.
  • the circulation of the air induced in the hopper 8 is done against the current of the particles projected from the centrifuge wheels. This movement makes it possible to complete the sorting effect sought to separate the fibers from the infibrated particles.
  • the fibers move in the reception chamber in a direction close to the horizontal. This direction bends towards the receiving conveyor under the effect of suction. They are gradually deposited on the conveyor 9 to form the felt 14, the thickness of which increases until it leaves the chamber.
  • the circulation of gases in the chamber is very turbulent, so it is not possible to represent a precise trajectory but only the overall movement.
  • the distribution of the fibers that is obtained in the absence of implementation of the invention is of the type shown in Figure 3. Two defects are usually observed, a hollow in the middle of the felt, or what is equivalent an excess of fibers on the edges, and an imbalance on one side compared to the other.
  • FIG 5 shows on a larger scale a part of Figure 1 on which is shown an embodiment of the invention. According to this mode, blowing nozzles 18 conduct air under pressure to blowing nozzles 19 arranged at the limit between the partitions 16 and 11.
  • a minimum space is always provided at this location so as not to hinder the movement of the partition 11. This spacing is sufficient to pass the nozzles, the end of which, constituting the emitter orifice 20, is flattened to form flat jets.
  • the sealing flap as in Figure 1 is not shown.
  • the figure shows only one side of the device. It goes without saying that similar nozzles are also arranged to blow at the limit between the walls 15 and 10.
  • the axis of the blowing nozzles is substantially parallel to the movable wall 11 so that the emitted jets run along this wall.
  • FIG. 5 five separate nozzles conduct the additional gas at different levels along the wall 11.
  • Other arrangements can be used without modifying the overall operation. It is possible in particular to blow from a single orifice, preferably sufficiently elongated, to distribute the blown gas over a certain height. This is the case for the device represented in FIG. 6.
  • the gas supplied by the nozzle 21 is emitted by the single nozzle 22.
  • the blowing is carried out slightly below the average path of the fibers determined at their origin by the position of the centrifugation wheels, and at a certain distance from the conveyor 9.
  • the vertical position of the blowers can vary within certain limits. Tests make it possible to determine in each case the best position, that is to say the one which makes it possible to obtain the greatest modification for an additional jet whose other characteristics are kept constant.
  • Figure 7 shows the position of the nozzles and the direction of the jets emitted.
  • the nozzles are placed along the walls 15 and 16 and at the end thereof slightly forward with respect to the rotating walls, the end of the nozzle practically at the level where the wall becomes planar. In this position, the jets enter the reception chamber immediately after their emission, which gives them maximum efficiency.
  • the nozzles can also extend further inside the receiving chamber. This does not appear to provide further improvements. In fact, the nozzle which must support itself does not penetrate very far into the chamber. Furthermore, if the nozzle were to advance further, it would constitute a particular point along the wall, on which the fibers could come to hang which is not desirable.
  • Tests were carried out with very variable pressures from 0.1 to 4 bars. The most suitable pressure for each case depends on the blowing nozzles. Indeed, the results, as we will see in the following, depend on the mass of gas blown and therefore when the nozzles offer small orifices it is necessary to use a higher pressure.
  • test results according to the invention for improving the transverse distribution of fibers forming a felt are carried out in an installation of the type presented in FIG. 1.
  • the additional blowers used include a single blowing nozzle on each side of the installation. These nozzles similar to that presented in FIG. 6 have an orifice extended over 500 mm for a width of 25 mm.
  • blowers are powered by a low pressure fan. They are regulated independently of each other by two separate valves.
  • the distribution of the fibers is measured by means of an X-ray probe. This probe is mobile and moves transversely to the conveyor. It operates on the felt leaving the reception room.
  • the analysis of fiber density measurements by absorption of X-rays is made by distinguishing three zones on the felt: a central zone and two lateral zones. These three zones are the same width.
  • the distribution is represented by two values, a "trough rate y which expresses the distribution imbalance between the center and the edges of the felt, and a" slope rate showing the imbalance between the two edges.
  • the hollow ratio is determined according to the formula: and the slope rate:
  • FIG. 8 schematically shows, according to the values of the trough and slope rates, the general shape of the distribution of the fibers transversely to the conveyor. In practice, it is of course necessary to combine a form representing the trough rate and that corresponding to the slope rate.
  • a product is prepared at the rate of 6 tonnes per hour.
  • the felt formed has a mass per unit surface area of 5.5 kg / m 2 .
  • the binder rate is 6.6% of the mass of the felt,
  • the average quantity of gas sucked under the conveyor is around 175,000 Nm 3 / h.
  • the quantities of gas blown along the walls are modified and the trend in slope and trough rates is monitored.
  • the initial distribution is poor, as can be seen in example 1.
  • the trough and slope rates are both relatively high, while for an ideal distribution they must tend to cancel each other out.
  • Examples 2 to 6 are carried out by blowing the nozzles according to the invention at different pressures.
  • Examples 2, 3, 4 and 5 show the progressiveness of the effects obtained by increasing the pressure simultaneously on the two nozzles.
  • the trough and slope rates are significantly reduced.
  • the trough rate even becomes negative.
  • Example 6 (which does not correspond to a satisfactory distribution), is carried out to show the influence of the use of two different pressures. It is noted that the difference in the blowing makes it possible to modify the slope rate profoundly. Means are therefore available through this means for varying the dip rate and the slope rate in a partially independent manner.
  • blowing devices according to the invention can be implemented automatically.
  • the regulation is done in this case continuously from the measurements coming from the X-ray absorption probe.
  • the measured values are processed by means of a computer to arrive, for example, at the expressions of dip rate and slope .
  • An algorithm stored in memory elaborates from these results a response which corresponds to a modification of the flows blown by the nozzles according to the invention by means of the valves arranged on the nozzles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Nonwoven Fabrics (AREA)
  • Artificial Filaments (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Inorganic Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Nuclear Medicine (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Glass Compositions (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Television Systems (AREA)
  • Polarising Elements (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Materials For Medical Uses (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Multicomponent Fibers (AREA)
EP84400358A 1983-02-23 1984-02-22 Amélioration de la répartition de fibres dans un feutre Expired EP0119124B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8302897 1983-02-23
FR8302897A FR2541323A1 (fr) 1983-02-23 1983-02-23 Amelioration de la repartition dans un feutre de fibres produites a partir de roues de centrifugation

Publications (2)

Publication Number Publication Date
EP0119124A1 EP0119124A1 (fr) 1984-09-19
EP0119124B1 true EP0119124B1 (fr) 1986-07-09

Family

ID=9286173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84400358A Expired EP0119124B1 (fr) 1983-02-23 1984-02-22 Amélioration de la répartition de fibres dans un feutre

Country Status (22)

Country Link
EP (1) EP0119124B1 (fi)
JP (1) JPS59157365A (fi)
KR (1) KR910006412B1 (fi)
AT (1) ATE20677T1 (fi)
AU (1) AU568532B2 (fi)
BR (1) BR8400796A (fi)
CA (1) CA1208913A (fi)
DD (1) DD216492A5 (fi)
DE (1) DE3460273D1 (fi)
DK (1) DK155223C (fi)
ES (1) ES529983A0 (fi)
FI (1) FI76842C (fi)
FR (1) FR2541323A1 (fi)
GR (1) GR79525B (fi)
IE (1) IE54964B1 (fi)
IN (1) IN162862B (fi)
IS (1) IS1462B6 (fi)
NO (1) NO156870C (fi)
PT (1) PT78139B (fi)
TR (1) TR21695A (fi)
YU (1) YU42895B (fi)
ZA (1) ZA84931B (fi)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI83888C (fi) * 1988-02-17 1991-09-10 Pargro Oy Ab Foerfarande och apparatur foer framstaellning av en fiberprodukt.
ATE391700T1 (de) 1999-09-28 2008-04-15 Rockwool Int Glasfaserbahnrolle und herstellungsverfahren von rolle und glasfaserbahn

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE741598C (de) * 1942-06-18 1943-11-13 Glaswatte Ges M B H Verfahren und Vorrichtung zur Herstellung eines fortlaufenden Vliesbandes aus Glasfasern oder aehnlichen Fasern
LU57877A1 (fi) * 1968-02-01 1969-05-22
US3582432A (en) * 1969-04-01 1971-06-01 Owens Corning Fiberglass Corp Fiber mat forming hood with movable side walls
DE2556855A1 (de) * 1974-12-18 1976-08-19 Monsanto Co Verfahren und vorrichtung zum vorbewegen von faeden
NO148262C (no) * 1980-04-25 1983-09-07 Bayer Ag Fremgangsmaate og innretning til fremstilling av fibermatter
FR2500492B1 (fr) * 1981-02-24 1985-07-26 Saint Gobain Isover Perfectionnement aux procedes et dispositifs de formation de fibres minerales au moyen de roues de centrifugation
FR2510909A1 (fr) * 1981-08-06 1983-02-11 Saint Gobain Isover Procede et dispositifs pour l'amelioration de la distribution sur un organe de reception de fibres vehiculees par un courant gazeux

Also Published As

Publication number Publication date
FI840738A (fi) 1984-08-24
AU568532B2 (en) 1988-01-07
PT78139A (fr) 1984-03-01
YU33884A (en) 1986-10-31
IN162862B (fi) 1988-07-16
KR910006412B1 (ko) 1991-08-21
IS2880A7 (is) 1984-08-24
FR2541323A1 (fr) 1984-08-24
NO840647L (no) 1984-08-24
GR79525B (fi) 1984-10-30
IS1462B6 (is) 1991-03-26
IE840361L (en) 1984-08-23
ES8500359A1 (es) 1984-11-01
FI840738A0 (fi) 1984-02-22
DK75384A (da) 1984-08-24
ZA84931B (en) 1984-09-26
JPS59157365A (ja) 1984-09-06
AU2454884A (en) 1984-08-30
FR2541323B1 (fi) 1985-03-29
DK75384D0 (da) 1984-02-17
TR21695A (tr) 1985-03-05
BR8400796A (pt) 1984-09-25
DE3460273D1 (en) 1986-08-14
FI76842C (fi) 1988-12-12
JPH0351823B2 (fi) 1991-08-08
IE54964B1 (en) 1990-03-28
DK155223C (da) 1989-08-07
DD216492A5 (de) 1984-12-12
DK155223B (da) 1989-03-06
NO156870B (no) 1987-08-31
NO156870C (no) 1989-02-21
ES529983A0 (es) 1984-11-01
PT78139B (fr) 1986-03-21
YU42895B (en) 1988-12-31
ATE20677T1 (de) 1986-07-15
EP0119124A1 (fr) 1984-09-19
FI76842B (fi) 1988-08-31
KR850002497A (ko) 1985-05-13
CA1208913A (fr) 1986-08-05

Similar Documents

Publication Publication Date Title
CA2034187A1 (fr) Procede et dispositif de fibrage de laine minerale par centrifugation libre
FR2601887A1 (fr) Dispositif de flocage electrostatique
EP0072300B1 (fr) Procédé et dispositif pour l'amélioration de la distribution sur un organe de reception de fibres véhiculées par un courant gazeux
EP0406107B1 (fr) Procédé et dispositif de réception de fibres minérales
US3088467A (en) Method of forming a continuous tobacco filler
FR2559793A1 (fr) Procede de production de matelas de fibres minerales a partir d'un materiau fondu
EP0118369B1 (fr) Perfectionnements aux techniques de formation de feutres de fibres
FR2583316A1 (fr) Procede et turboseparateur pour la separation pneumatique par dispersion, notamment pour le ciment.
EP0091866B1 (fr) Formation de fibres comprenant une centrifugation
EP0119124B1 (fr) Amélioration de la répartition de fibres dans un feutre
EP0091381B1 (fr) Perfectionnements aux techniques de formation de fibres par centrifugation et étirage gazeux
EP0991601B1 (fr) Procede et dispositif de fibrage de laine minerale par centrifugation libre
JP2013524815A (ja) タバコロッド製造装置
GB2132873A (en) Apparatus for building a continous tobacco stream
JP2628932B2 (ja) 繊維状材料のオープニング方法と装置および該装置を含む巻きタバコ製造装置
EP0059145B1 (fr) Procédé et dispositif pour la fabrication de fibres à partir de matières étirables
EP0083543A1 (fr) Procédé et dispositif pour la formation de voiles de fibres
FR2684693A1 (fr) Machine pour la fabrication d'un voile de fibres non tisse.
FR2556568A1 (fr) Procede de fabrication de cigarettes et machine de commande de distribution de tabac a brins courts, notamment avec un pourcentage preregle de tabac a brins courts et de tabac a brins longs
GB2132875A (en) Method of and apparatus for building a tobacco stream
EP0062586B1 (fr) Procédé et dispositif de lavage utilisés dans la fabrication de matelas de fibres minérales
FR2581325A1 (fr) Procede et dispositif pour l'incorporation sans pertes d'un liant a une nappe de laine minerale
WO1997017305A1 (fr) Procede et dispositif pour la centrifugation libre de fibres minerales
US1720666A (en) Mica-flake-sorting machine
NL8302633A (nl) Werkwijze voor het strooien van spaanplaten, in het bijzonder van cementgebonden spaanplaten alsmede een inrichting voor het uitvoeren van de werkwijze.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19840929

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 20677

Country of ref document: AT

Date of ref document: 19860715

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3460273

Country of ref document: DE

Date of ref document: 19860814

ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19911220

Year of fee payment: 9

EPTA Lu: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19930222

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19940125

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19940127

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19940202

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19940210

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19940222

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19940228

Year of fee payment: 11

EAL Se: european patent in force in sweden

Ref document number: 84400358.2

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19950222

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19950223

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Effective date: 19950228

Ref country code: BE

Effective date: 19950228

Ref country code: LI

Effective date: 19950228

BERE Be: lapsed

Owner name: ISOVER SAINT-GOBAIN

Effective date: 19950228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19950901

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19950901

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19951101

EUG Se: european patent has lapsed

Ref document number: 84400358.2

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19980116

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19980204

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990222

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19990222

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19991029

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST