EP2100993B1 - Procédé et agencement pour améliorer le comportement de bande de tissu à fibre minérale continue - Google Patents

Procédé et agencement pour améliorer le comportement de bande de tissu à fibre minérale continue Download PDF

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Publication number
EP2100993B1
EP2100993B1 EP09154825A EP09154825A EP2100993B1 EP 2100993 B1 EP2100993 B1 EP 2100993B1 EP 09154825 A EP09154825 A EP 09154825A EP 09154825 A EP09154825 A EP 09154825A EP 2100993 B1 EP2100993 B1 EP 2100993B1
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EP
European Patent Office
Prior art keywords
processing unit
web
mineral
fibre web
working level
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Not-in-force
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EP09154825A
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German (de)
English (en)
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EP2100993A1 (fr
Inventor
Jenni Peltola
Vesa Lehto
Markku Talonen
Tom Nurmi
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Paroc Hold Oy AB
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Paroc Oy AB
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Priority to EP09154825A priority Critical patent/EP2100993B1/fr
Priority to PL09154825T priority patent/PL2100993T3/pl
Publication of EP2100993A1 publication Critical patent/EP2100993A1/fr
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    • 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
    • D04H1/40—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
    • D04H1/70—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
    • D04H1/74—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 orientated, e.g. in parallel (anisotropic fleeces)

Definitions

  • the present invention relates to a method and arrangement for improving runnability of a continuous mineral fibre web during the manufacturing process of the mineral fibre web.
  • Mineral wool e.g. stone wool
  • suitable mineral-containing raw materials such as diabase, limestone and slag
  • the obtained mineral melt is discharged from the melting furnace in the form of a melt stream to a fiberising apparatus, such as a spinning machine, in which the melt is formed into mineral fibres.
  • a "cascade type” fiberising apparatus For formation of mineral fibres from molten stone a "cascade type" fiberising apparatus is typically used.
  • This kind of fiberising apparatus comprises a series of rotating fiberising rotors or spinning rotors, at present typically 3 to 4 rotors.
  • the mineral melt from the melting furnace is directed toward the mantle surface of the first rotor where it gets hold of the rotor's mantle surface to a certain extent before it is thrown out as a cascade of drops against the mantle surface of the adjacent second rotor in the series.
  • a part of the mineral melt gets then sufficient hold of the mantle surface of the second rotor in order to be formed into fibres due to the effect of the centrifugal force.
  • Another part of the mineral melt is thrown further against the mantle surface of the third rotor.
  • the mineral melt is "transported" as a jet of mineral melt drops or a drop cascade, successively from one rotor to the subsequent one through the whole fiberising apparatus, while a part of the mineral melt is formed into mineral fibres.
  • a binder may be applied on the formed mineral fibres, either during the fibre formation or after it.
  • the mineral fibres are usually collected as a thin fibre web, a so-called primary fibre web or a primary web.
  • the primary fibre web is normally collected by a travelling perforated surface forming the collecting surface of the collecting member.
  • the collected primary web can be processed in several different manners. It can be, for example, cross-lapped by using pendulum conveyors or other oscillation means to form a secondary fibre web. Both primary and secondary web can be compressed in height direction, longitudinally and/or transversely. Usually the web is cured in a curing oven before it is cut to final product and packed.
  • a processing unit comprises an upper and lower part, which support the large surfaces of the web during processing, i.e. the web is supported both from above and from underneath.
  • the distance between the upper and lower part of the processing unit depends on the properties which are to be achieved in that unit, for example, the degree of compression.
  • two or more processing units are arranged in line after each other, very often their working levels, i.e. the levels of their lower parts, are not in the same plane, because the processing parameters of the different units require different distances between the upper and lower part of the first and second processing unit.
  • the mineral fibre web has to be conveyed either downwards or upwards between the different processing units.
  • EP 1111113 discloses a process and apparatus for the production of mineral fibreboard.
  • the mineral fibreboard is obtained by longitudinally compressing the fleece and then dividing it into two or more layers. At least one of these layers is subjected to thickness compression, before recombining and bonding.
  • US 6,851,283 discloses a method of making thermoinsulating mat of mineral fibres with random orientation. Due to the double crimping and and the use of fine fibres, a product is obtained having a lower apparent density and a greater flexibility. The fibres are coated with a resinous composition, which is crosslinked in a polymerisation oven.
  • WO 02/27090 discloses a method and device for making mineral fibre felts.
  • the device comprises at least a pair of conveyors designed to compress the felt and a curing oven, which is arranged after the pair of conveyors.
  • a means for preventing the decompression the felt is arranged between the conveyor pair and the oven, the means comprising at least a cam with a profile adapted to maintain the distance between the conveyors and the oven.
  • US 3,826,903 discloses a method and apparatus for manufacturing a glass fibre mat.
  • an object of this invention is to provide a method and an arrangement for the making of mineral wool, where the above-mentioned disadvantages have been minimised or even eliminated.
  • An object is also to provide a method and an arrangement which improves the runnability and transport of the continuous mineral fibre web in the process.
  • a further object of this invention is to provide a method and an arrangement which makes it easier to transfer the mineral fibre web from one processing unit to a second succeeding unit.
  • Typical method for improving runnability of a continuous mineral fibre web according to the present invention comprises at least the following steps
  • Typical arrangement for improving runnability of a continuous mineral fibre web according to the present invention comprises
  • working level of a processing unit is defined as the level on which the mineral web to be processed is supported against the gravitational force.
  • the processing unit comprises an upper and lower part
  • the working level of that unit is defined by the supporting surface of the lower part facing the web which is processed or conveyed.
  • substantially same plane means that the working levels of two succeeding processing units are arranged so close to the same plane as possible, so that no changes in the structure of the web occurs during transition from the first to the second processing unit. Existence of sharp steps between the first and the second processing unit should be minimised, if not totally eliminated.
  • a step having a height ⁇ 1 cm, preferably ⁇ 0.7 cm may be tolerated between the height of the working levels of the first and second processing units.
  • the difference between the plane of the working level of the first processing unit and the plane of the working level of the second processing unit is at the maximum 2°, preferably at the maximum 1°.
  • the present invention does not necessarily require that all the different processing units in the manufacture of a mineral fibre web are arranged to be adjustable. Normally it is sufficient to arrange the one processing unit or a number of processing units at certain critical point(s) of the process adjustable.
  • the working level of the first processing unit is adjusted substantially at the same plane with the working level of the second processing unit. This means that the working level of the second processing unit defines the working level of the first processing unit. This is especially suitable when the adjustment of the working level of the second processing unit is complicated. There might exist also a number of first processing units, working levels of which are adjusted according to the working level of the second processing unit.
  • the height difference between working levels of consecutive processing units is minimised. It is not necessary that the working levels itself are strictly vertical, they may be slanting or oblique to the vertical.
  • both the working level of the first processing unit and the working level of the second processing unit are adjustable.
  • the working levels of the first and the second processing units may also be adjustable independently from each other, and/or they may be continuously adjustable, even during the processing of the mineral fibre web.
  • Position sensor means may be, for example, pulse encoders or other corresponding transducers.
  • a first position sensor means may be arranged to monitor the position of the working level of the first processing unit and a second position sensor means may be arranged to monitor the working level of the second processing unit.
  • the position sensor means may be connected to a control system, which may be used for automatic control of the working levels of the processing units.
  • the adjustment of the working level of a processing unit may be achieved by adjusting the height of the support structure of the processing unit.
  • the height adjustment of the processing unit is achieved by installing height adjustment means, such as screw hoists or hydraulic cylinders, to the support structure of the unit. Height adjustment means may be operated manually or by using motor means, such as electric motor(s). If one of the processing units is a curing oven, typically the second processing unit, the height adjustment is preferably arranged so that they can be operated without direct contact between the first and the second processing unit, thus minimising the heat transfer from the curing oven.
  • the height adjustment achieved is typically 10 - 600 mm, preferably 20 - 400 mm.
  • Height adjustment means may be connected via a control system to the position sensor means, so that they are operated according to the signal received from the position sensor means monitoring the other processing unit.
  • the control system receives the information from the second position sensor means that the plane of the working level of the second processing unit has changed, it sends a command to the height adjustment means of the first processing unit to move the working level of the first processing unit to the corresponding plane.
  • the adjustment of the working levels may be performed also manually or mechanically without automation.
  • the adjustment of the working level of the first processing unit is achieved by adjusting the height of the support structure of the first processing unit by using the height adjustment means of the first processing unit.
  • the first and the second processing units are arranged as close to each other as practically possible in order to minimise the distance between the processing units.
  • the distance between the different processing units is typically 1 - 15 cm, more typically 1.3 - 7 cm, sometimes 1.5 - 3 cm.
  • the mineral fibre web is conveyed from the first processing unit to the second processing unit by using an intermediate conveyor means arranged between the first processing unit and the second processing unit. This is advantageous when a coating, separate mineral fibre layer, metal, textile or plastic foil, metal, textile or plastic sheet is to be applied onto the mineral fibre web between the processing units.
  • the working level of the intermediate conveyor means is preferably adjusted or arranged to the substantially same plane with the working levels of the first and second processing units, the conveyor means comprising means for adjusting the working level of the conveyor means.
  • the intermediate conveyor means may be a belt conveyor or it may comprise a number of rollers arranged after each other. It may also comprise a pair of conveyors or a number of set of rollers arranged after each other so that the web to be conveyed is supported on both sides, i.e. both large surfaces of the web are supported by the conveyor means.
  • the length of the intermediate conveyor means is preferably as short as possible, typically 0.5 - 3 m, more typically 1 - 2.5 m, most typically about 2 m.
  • the intermediate conveyor means may comprise side support means, which guide the sides of the mineral fibre web between the successive processing units and prevent the expansion of the web in transverse direction.
  • the side support means may comprise one or more adjustable and/or flexible support(s) with vertical rolling axis e.g. rollers or conveyor belt(s), arranged on both transversal sides of the fibre web, and rotated with the aid of a motor(s).
  • the speed of the side support is at least the same as the speed of the fibre web or preferably 1 - 3 % higher. If the speed of the side support is arranged higher than the speed of the fibre web it has been noticed that the side supports keep clean and require less maintenance.
  • the side supports means may be used for active control of the mineral fibre web, i.e. it is possible to exert a slight transversal compressive force to the web with the aid of the side support means, and thus improved the runnability of the web and reduce its bulging.
  • the first and second processing units may be processing units where the mineral fibre web is compressed vertically, longitudinally and/or transversally in the direction of the travel of the web.
  • the first processing unit may, for example, be a longitudinal compression unit and the second processing unit a transversal compression unit.
  • the first and second processing units may also perform the same function, i.e. they may be functionally identical. It is also possible that even if the first and the second processing units are functionally identical, they differ in structural details.
  • the first and the second processing unit may be both e.g. longitudinal compression units, but they differ in the number of compression zones and/or the degree of compression achieved.
  • the mineral fibre web is longitudinally compressed in the first processing unit, which is a longitudinal compression unit and cured in the second processing unit, which is a curing oven.
  • the problem of bulging and web distortion is often especially pronounced when a longitudinal compression unit is arranged before a curing oven, i.e. longitudinal compression precedes the curing oven.
  • a curing oven typically comprises two parts arranged on top of each other, namely a lower and an upper part. The distance between the upper and lower part of the curing oven depends on the thickness of the final mineral web, and the distance between the oven parts is often controlled by moving the lower part of the oven in vertical direction.
  • the working level of the curing oven varies depending of the final product type and quality, and the working level of the oven is routinely adjusted when the produced type is changed. This leads to the situation where the working level of the curing oven is not in the same plane with the working level of the preceding longitudinal compression unit. By adjusting the working level of the longitudinal processing unit to the substantially same plane this problem is solved by the present invention.
  • the longitudinal compression unit preferably comprises a number of compression elements, such as disc-rollers.
  • Disc-rollers comprise shafts extending transversally across the web to be compressed, the shafts being provided with a number of means, such as discs, which come into contact with the web and which affect the advancing speed of the web.
  • One shaft may be provided 20 - 40 discs, equidistantly arranged and having a diameter of about 100 - 200 mm.
  • the compression elements are arranged in pairs, one on either side of the web and rotating in a direction towards each other.
  • a longitudinal compression unit may comprise 10 - 20 compression elements on one side of the web.
  • the upper part of the longitudinal compression unit with its compression elements is arranged movable in vertical direction with respect to the lower part of the unit defining the working level of the unit.
  • the degree of compression is defined by adjustment of the upper part of the unit and the rotational speed of the compression elements.
  • the rotational speed of the compression elements exert a braking or an accelerating effect on the web, leading to a re-orientation of the fibres.
  • the 1 to 6, more preferably 2 to 4 upper rollers situated near the exit of the compression unit have a smooth surface in order to still increase the smoothness of the surface of the compressed fibre web and reduce the possible traces caused by the compression elements.
  • the longitudinal compression in the first processing unit by using at least three consecutive compression zones, preferably four compression zones, more preferably five compression zones.
  • a compression zone comprises typically 1 - 10, more typically 3 - 5 compression element pairs.
  • the compression zones may be independently controllable. According to one embodiment there is an equal decrease in speed from compression zone to compression zone, which decrease may be e.g. about 10 to 20%. The change in speed does not, however, need to be uniform, but it can be advantageously of different magnitude at different stages of the longitudinal compression procedure.
  • Compression element pairs in one compression zone are preferably connected to its own motor means, so they can be independently controlled irrespective of other compression element pairs.
  • the speed can be controlled continuously without steps or with discreet steps.
  • One motor means may be connected to one or several compression element pairs, or all the compression element pairs in one compression zone. In the former case one compression zone may be associated with a number of motor means, in the latter case one compression zone is driven by one motor means.
  • the longitudinal compression is achieved by gradual reduction in web height and speed inside the compression unit.
  • the reduction in speed and height may be performed more discreetly, and the differences between the zones may be reduced. This enables a more gentle compression procedure, leading to improved fibre orientation and minimised creasing of the fibre web surfaces, also enhancing the fibre web runnability. All the compression zones may also have the same speed, when the longitudinal compression unit is used in by-pass mode, without compression.
  • the continuous fibre web is precompressed before the first processing unit, especially when the first processing unit is a longitudinal compression unit.
  • the pre-compression means comprise two conveyors arranged on top of each other, i.e. an upper and a lower conveyor, in horizontally wedge-shape configuration, the tip of the wedge being situated nearest to the first processing unit.
  • the pre-compression means are arranged as near to the first processing unit as possible, so that the distance between pre-compression means and the first processing unit is minimised. The distance is typically only a few centimetres, less than 15 cm, very typically 3 to 10 cm, often about 5 cm. In this way the transfer of the fibre web from the pre-compression means is improved.
  • the output level of the pre-compression means is preferably arranged at the same level as the working level of the succeeding first processing unit.
  • the upper conveyor of the pre-compression means may move faster than the lower conveyor of the pre-compression means.
  • the upper conveyor of the pre-compression means has typically 1 - 10 %, more typically 3 - 7 % higher speed than the lower conveyor. This difference between the conveyor speeds also has a positive impact on the overall runnability of the fibre web.
  • the length of the pre-compression means is arranged greater than normally, i.e. the length of the pre-compression means is typically > 0.45 m, more typically 0.5 - 3 m, most typically 1 - 2 m.
  • the fibre web has an active contact with at least 50 %, typically 55 - 80 %, more typically 65 - 75 % of the surface of the upper conveyor forming the pre-compression means during the pre-compression preceding the first processing unit.
  • the fibre web has an active contact with at least 85 %, typically 90 - 99 % of the surface of the lower conveyor.
  • the input height of the pre-compression means i.e. the distance between the upper and the lower conveyor is adjustable.
  • the pre-compression means may comprise belt or roller conveyors.
  • the heat transfer from the curing oven is blocked to the preceding processing unit, such as the longitudinal compression unit.
  • the heat transfer from the curing oven to the preceding process unit is undesired, as it may cause partial curing of the fibre web already before the curing oven, i.e. too early in the process. This may naturally deteriorate the processing of the mineral fibre web.
  • the heat blockade may be achieved by arranging different kinds of blocking means near the entrance of the curing oven.
  • Blocking means may comprise mechanical means, such as a heat transfer damper, or blocking may be achieved by cooling of the intermediate conveying means arranged between the first and second processing unit.
  • the intermediate conveying means may comprise, at its end nearest to the curing oven a cooling system, based e.g. on water circulation.
  • first end of the conveyor means may be connected to the first processing unit and the second end of the conveyor means may be connected to the curing oven.
  • the connection between the second end and the curing oven is preferably such that it allows the thermal expansion of the curing oven during the use of the oven.
  • the second end of the conveyor means may be for example in immediate contact with the oven via supports arranged on the sides of the oven, on which the end of the conveyor means is resting.
  • the height of the preceding first processing unit may be adjusted by using an immediate connection between the processing units.
  • the immediate connection is, however, preferably arranged in such a manner that the heat transfer from the oven to the earlier process units is minimised.
  • the lower part of the second processing means is changed by a number of jack means.
  • a connecting shaft is connected from its first end to the lower part of the second processing means and its second end is connected to the elevator means of the first processing unit.
  • the binder in the mineral fibre web is cured in conventional manner in the curing oven, and the cured fibre web is cut transversely and/or longitudinally in order to obtain the final product, such as a slab, a board or the like.
  • the present invention is especially suitable for processes where the mineral fibres are produced by using a fiberisation apparatus of cascade type comprising at least two, preferably three or most preferably four rotating fiberising rotors.
  • Each rotor is normally mounted for rotation about a substantially horizontal axis and the melt is fed onto the first rotor, onto its mantle surface. From the first rotor a part of the melt is thrown onto the second rotor, onto its mantle surface. Part of the melt is formed to the fibres on the mantle surface of the second rotor and part of the melt is thrown back to the first rotor and/or off to the third rotor.
  • the fiberising apparatus comprises four rotors, a part of the melt is formed to the fibres on the mantle surface of the third rotor and a part is thrown off onto the fourth rotor, onto its mantle surface.
  • the mineral fibres are formed from the melt on active periphery of the rotating fiberising rotors, optionally and preferably also on the mantle surface of the first rotor.
  • the active periphery of the fiberising rotor is the part of the periphery of the fiberising rotor where mineral fibres are formed from the mineral melt which is located on the surface of the rotor while the rotor rotates.
  • Mineral fibres are generally defined as that weight fraction of the binderless fibre maternal which passes through a 32 ⁇ m sieve.
  • the binder in the mineral fibre web is cured in a curing oven, and the cured fibre web is cured transversely and/or longitudinally.
  • Figure 1 schematically shows an arrangement according to one embodiment of the invention, seen transversely to the direction of the movement of the mineral fibre web.
  • the arrangement comprises a first processing unit 1, which is a longitudinal compression unit, and a second processing unit 2, which is a curing oven.
  • the lower part 2' of the curing oven 2 is adjusted according to the height of the produced product, whereby the working level 21 of the curing oven defines the working level 11 of the first processing unit 1.
  • the first processing unit 1 is arranged to a support structure 3.
  • the working level 11 of the first processing unit 1 is adjustable by using height adjustment means 4, 4' connected to the support structure 3. With the height adjustment means 4, 4' the support structure 3 can be raised or lowered so that the working levels 11, 21 are substantially at the same plane.
  • the height adjustment means 4, 4' comprise screw hoists that are operated by using motor means (not shown).
  • the working level 21 of the curing oven 2 is changed, for example, when the manufactured product quality is changed the working level 11 of the longitudinal compression unit is adjusted to the same plane with the working level 21 of the curing oven by lowering or raising the support structure 3 by using height adjustment means 4, 4'.
  • the longitudinal compression unit 1 comprises a number of disc-rollers 5, 5' that are in contact with the fibre web 6 to be compressed and which serve as compression elements.
  • the lower disc-rollers 5' define the working level 11 of the longitudinal compression unit
  • the mineral fibre web 6 is conveyed from the longitudinal compression unit 1 to the curing oven 2 with the aid of an intermediate conveyor 7.
  • the working level 71 of the intermediate conveyor 7 is arranged to the substantially same plane with the working levels 11, 21.
  • the first end 7' of the intermediate conveyor 7 is connected to the support structure 3 of the longitudinal compression unit 1 and the second end 7" is in immediate contact with an adjustment structure 9 arranged on the side of the lower part 2' of the curing oven 2.
  • the second end 7" is resting on the adjustment structure 9.
  • the working level 71 of the intermediate conveyor thus automatically follows the adjustment of the working levels 11,21.
  • the intermediate conveyor 7 comprises also side support means 8 for guiding the sides of the mineral fibre web between the longitudinal compression unit 1 and the curing oven 2.
  • the side support means 8 are here arranged as vertical rollers on both sides of the web and they prevent the expansion of the web in transverse direction.
  • the side support means 8 are driven with their own motor means 8'.
  • the pre-compression means 10 comprises two conveyors 12, 12' arranged on top of each other in wedge-shape configuration.
  • the working level of the pre-compression means 41 is arranged at the same level as the working level 11 of the succeeding longitudinal compression unit 1 at the output end of the pre-compression means 10.
  • the difference between the upper conveyor 12 and lower conveyor 12', i.e. the input height of the pre-compression means, can be adjusted with regulating means 15 that may be operated manually or be connected to a motor means and be operated by computer control.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Nonwoven Fabrics (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Claims (9)

  1. Procédé pour améliorer le comportement d'une bande de tissu à fibre minérale continue comprenant :
    - la production de fibres minérales à partir d'un produit minéral fondu en utilisant un appareil de formation de fibres,
    - l'addition d'un liant aux fibres minérales formées,
    - la soufflage des fibres minérales formées à partir du appareil de formation de fibres vers une surface collectrice sur laquelle les fibres minérales sont recueillies sous la forme d'une bande primaire, et, facultativement, recouvrir de façon croisée la bande primaire pour former une bande de tissu secondaire,
    - le traitement en comprimant longitudinalement la bande de tissu à fibre minérale primaire recueillie ou la bande de tissu à fibre minérale secondaire à un niveau opérationnel d'une première unité de traitement et transférer la bande de tissu vers un niveau opérationnel d'une seconde unité de traitement en vue de traiter la bande de tissu, la seconde unité de traitement étant un four de traitement thermique, lequel comporte une partie de four inférieure et une partie de four supérieure disposées l'une au-dessus de l'autre,
    caractérisé par le fait de
    - la commande de la distance comprise entre la partie supérieure et la partie inférieure du four de traitement thermique en déplaçant la partie inférieure du four dans la direction verticale, la distance étant fonction de l'épaisseur de la bande de tissu à fibre minérale finale,
    - le réglage des niveaux opérationnels des première et seconde unités de traitement sur le même plan essentiellement, le réglage du niveau opérationnel de la première unité de traitement étant obtenu en ajustant la hauteur de la structure de support de la première unité de traitement afin d'assurer un transfert régulier de la bande de tissu à fibres minérales entre les unités de traitement.
  2. Procédé selon la revendication 1, caractérisé par le fait de contrôler en continu les niveaux opérationnels des première et seconde unités de traitement en utilisant des moyens de détecteur de position.
  3. Procédé selon l'une quelconque des revendications 1 ou 2, caractérisé par le fait de transférer la bande de tissu de la première unité de traitement vers la seconde unité de traitement en utilisant des moyens de transfert intermédiaires, et de régler le niveau opérationnel des moyens de transfert intermédiaires sur le même plan essentiellement que les niveaux opérationnels des première et seconde unités de traitement.
  4. Procédé selon la revendication 1, caractérisé par le fait de réaliser la compression longitudinale dans la première unité de traitement en utilisant au moins trois zones de compression consécutives.
  5. Procédé selon la revendication 1, caractérisé par le fait de bloquer le transfert de chaleur à partir du four de traitement thermique vers l'unité de compression longitudinale.
  6. Procédé selon la revendication 5, caractérisé par le fait de refroidir les moyens de transfert intermédiaires entre les première et seconde unités de traitement.
  7. Agencement permettant d'améliorer le comportement d'une bande de tissu à fibre minérale continue, l'agencement comportant
    - un appareil de formation de fibres pour produire des fibres minérales à partir d'un produit minéral fondu,
    - des moyens de soufflage pour souffler les fibres minérales formées à partir de l'appareil de formation de fibres,
    - une surface de collecte sur laquelle les fibres minérales sont recueillies sous la forme d'une bande de tissu à fibre primaire,
    - facultativement, des moyens de recouvrement croisé pour recouvrir de façon croisée la bande de tissu à fibre minérale primaire recueillie,
    - une première et une seconde unités de traitement pour traiter la bande de tissu à fibre minérale primaire ou secondaire, les unités de traitement étant disposées l'une après l'autre de telle sorte que la bande de tissu à fibre soit transférée du niveau opérationnel de la première unité de traitement vers le niveau opérationnel de la seconde unité de traitement, dans lequel la première unité de traitement est une unité de compression longitudinale et la seconde unité de traitement est un four de traitement thermique, lequel comporte une partie de four inférieure et une partie de four supérieure disposées l'une par-dessus l'autre,
    caractérisé en ce que
    la partie inférieure du four de traitement thermique est agencée de façon à pouvoir se déplacer dans la direction verticale en vue de commander la distance entre la partie supérieure et la partie inférieure du four de traitement thermique, la distance dépendant de l'épaisseur de la bande de tissu à fibre minérale finale, et en ce que la première unité de traitement comprend des moyens de réglage de hauteur pour régler la hauteur de la structure de support de la première unité de traitement en vue de régler les niveaux opérationnels des première et seconde unités de traitement essentiellement sur le même plan afin d'assurer un transfert régulier de la bande de tissu à fibre minérale entre les unités de traitement.
  8. Agencement selon la revendication 7, caractérisé en ce qu'il comporte des premiers moyens de détecteur de position pour contrôler la position du niveau opérationnel de la première unité de traitement et des seconds moyens de détecteur de position pour contrôler la position du niveau opérationnel de la seconde unité de traitement.
  9. Agencement selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte des moyens de transfert intermédiaires agencés entre la première unité de traitement et la seconde unité de traitement, les moyens de transfert comprenant des moyens permettant de régler le niveau opérationnel des moyens de transfert aux niveaux opérationnels des premiers et seconds unités de traitement.
EP09154825A 2008-03-12 2009-03-11 Procédé et agencement pour améliorer le comportement de bande de tissu à fibre minérale continue Not-in-force EP2100993B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09154825A EP2100993B1 (fr) 2008-03-12 2009-03-11 Procédé et agencement pour améliorer le comportement de bande de tissu à fibre minérale continue
PL09154825T PL2100993T3 (pl) 2008-03-12 2009-03-11 Sposób i układ do poprawiania płynności ruchowej ciągłej wstęgi z włókien mineralnych

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08102522A EP2100992A1 (fr) 2008-03-12 2008-03-12 Procédé et agencement pour améliorer le comportement de bande de tissu à fibre minérale continue
EP09154825A EP2100993B1 (fr) 2008-03-12 2009-03-11 Procédé et agencement pour améliorer le comportement de bande de tissu à fibre minérale continue

Publications (2)

Publication Number Publication Date
EP2100993A1 EP2100993A1 (fr) 2009-09-16
EP2100993B1 true EP2100993B1 (fr) 2011-02-16

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EP08102522A Withdrawn EP2100992A1 (fr) 2008-03-12 2008-03-12 Procédé et agencement pour améliorer le comportement de bande de tissu à fibre minérale continue
EP09154825A Not-in-force EP2100993B1 (fr) 2008-03-12 2009-03-11 Procédé et agencement pour améliorer le comportement de bande de tissu à fibre minérale continue

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EP08102522A Withdrawn EP2100992A1 (fr) 2008-03-12 2008-03-12 Procédé et agencement pour améliorer le comportement de bande de tissu à fibre minérale continue

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EP (2) EP2100992A1 (fr)
AT (1) ATE498721T1 (fr)
DE (1) DE602009000728D1 (fr)
PL (1) PL2100993T3 (fr)
RU (1) RU2469134C2 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103553318B (zh) * 2013-11-03 2015-09-09 南京珊迪建材机械有限公司 一种新型6米鼓式集棉机
JP7356641B2 (ja) * 2019-02-01 2023-10-05 マグ・イゾベール株式会社 オーブン、繊維系断熱材の製造装置、および繊維系断熱材の製造方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3826903A (en) * 1972-01-03 1974-07-30 Owens Corning Fiberglass Corp Method and apparatus for control of conditions in a process
CA2032229C (fr) * 1989-12-19 2001-10-16 Paolo Baracchini Matelas thermo-isolant en fibres minerales a orientation aleatoire
DK165926B (da) * 1990-12-07 1993-02-08 Rockwool Int Fremgangsmaade til fremstilling af isoleringsplader sammensat af indbyrdes forbundne stavformede mineralfiberelementer
ES2166530T3 (es) * 1996-03-25 2002-04-16 Rockwool Int Procedimiento y aparato para la produccion de un tablero de fibra mineral.
FR2814474B1 (fr) * 2000-09-27 2002-11-29 Saint Gobain Isover Procede et ensemble de fabrication de feutres formes de fibres minerales
WO2005095727A1 (fr) * 2004-04-02 2005-10-13 Rockwool International A/S Elements acoustiques et procede pour les produire

Also Published As

Publication number Publication date
RU2469134C2 (ru) 2012-12-10
ATE498721T1 (de) 2011-03-15
DE602009000728D1 (de) 2011-03-31
EP2100993A1 (fr) 2009-09-16
PL2100993T3 (pl) 2011-06-30
RU2009109005A (ru) 2010-09-20
EP2100992A1 (fr) 2009-09-16

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