EP0654100B1 - Verfahren zum herstellen von mineralwolleplatten und vorrichtung zur durchführung des verfahrens - Google Patents

Verfahren zum herstellen von mineralwolleplatten und vorrichtung zur durchführung des verfahrens Download PDF

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Publication number
EP0654100B1
EP0654100B1 EP93915880A EP93915880A EP0654100B1 EP 0654100 B1 EP0654100 B1 EP 0654100B1 EP 93915880 A EP93915880 A EP 93915880A EP 93915880 A EP93915880 A EP 93915880A EP 0654100 B1 EP0654100 B1 EP 0654100B1
Authority
EP
European Patent Office
Prior art keywords
mineral wool
web
approx
beating device
beater blade
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP93915880A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0654100A1 (de
Inventor
Hans Resch
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.)
Deutsche Rockwool Mineralwoll GmbH and Co OHG
Original Assignee
Deutsche Rockwool Mineralwoll GmbH and Co OHG
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 Deutsche Rockwool Mineralwoll GmbH and Co OHG filed Critical Deutsche Rockwool Mineralwoll GmbH and Co OHG
Publication of EP0654100A1 publication Critical patent/EP0654100A1/de
Application granted granted Critical
Publication of EP0654100B1 publication Critical patent/EP0654100B1/de
Anticipated expiration legal-status Critical
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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
    • D04H1/40—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
    • 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
    • D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • 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
    • D04H1/58—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 by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—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 by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/655—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 by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions characterised by the apparatus for applying bonding agents
    • 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

Definitions

  • the invention relates to a method for producing mineral wool panels with a compacted layer on the top and / or underside of the panel.
  • the high-density part wool web has a different bulk density, ie the bulk density fluctuates both over the width and over the length of the mineral wool web.
  • the tear-off strength between the two rejoined partial webs is inadequate because there is no sufficient connection between the underside of the compacted partial web and the top of the residual wool web, so that the compacted partial web breaks off at the interface.
  • the cut high-density partial web is between the rollers or in a roller press system during the compression rolled out, where there are irregular protruding edges on both sides, comparable to rolling out a cake batter. Apart from the loss of material within the partial web itself, these edges have to be cut off subsequently, which also leads to a large waste loss. In addition, there are often blockages within the wool press system, at least irregular conveying movements, which can also lead to an increased proportion of waste.
  • the invention is based on the object of creating a method by means of which compacted surface layers can be formed in a simple manner, which on the other hand maintain a secure, reliable connection with the remaining part of the mineral wool web.
  • a mineral wool web is continuously conveyed with an uncured binder and is subjected to mechanical impact treatment with a high impact frequency at at least one point in the conveying path, in that the mineral wool web is subsequently fed to a hardening oven for curing the binder and then divided into plates .
  • the impact treatment with a high impact frequency has the advantage that only a pulse-like application of force to a sub-area of the mineral wool web takes place, that is to a certain preselected depth, but that, due to the inertia and the elasticity of the mineral wool material, the transmission of the force application into the lower layer is prevented becomes.
  • the layer immediately exposed to the impact treatment with a high impact frequency is compressed, while the remaining part of the mineral wool web remains unchanged.
  • Another advantage is the even compaction of the layer to be compacted. There is a high tear resistance between of the respective compacted and the undensified layer.
  • the outer surface of the compacted layer is smooth and even, giving a good appearance. There is no loss of material or waste. Since the binding agent within the mineral wool web is not hardened, the impact treatment with a high impact frequency does not lead to any destruction or even change in the fiber structure or the fibers themselves; rather, only a permanent compression of the layer in question is achieved.
  • the beat frequency is advantageously chosen between approximately 500 / min to 6000 / min.
  • any mineral wool product that occurs in practice can be produced with a compressed top layer on the top and / or bottom.
  • a mineral wool with a bulk density or a density of about 15 to 200 kg / m 3 is advantageously chosen.
  • the mineral fibers within the mineral wool web advantageously run essentially parallel or at an acute angle to the large web surfaces. In this way, the impact treatment results in a compression that is gentle on the fibers.
  • Known lamellar mats, in which the fibers run essentially perpendicular to the large surfaces, are less suitable for the method according to the invention because the fibers would be deformed or even broken by the impact treatment and, under certain circumstances, an excessive introduction of force into the layer not to be compressed would be done.
  • the conveying speed of the mineral wool web is advantageously chosen from about 0.5 to 30 m / min and the stroke frequency is adapted to the conveying speed.
  • a very high impact frequency and a low depth of penetration of the impact treatment are selected in the relevant surface layer of the mineral wool web, a thin, highly compressed layer results. Choosing a low impact frequency and a large penetration depth of the impact treatment results in a correspondingly thick and less compressed surface layer. Between these two extreme cases, a wide range of end products for a wide variety of applications can be created by varying the stroke frequency and penetration depth. Further variation possibilities result from changing the conveying speed of the mineral wool web. The compression can be increased by a low conveying speed and the compression can be reduced by a higher conveying speed.
  • the invention also relates to a device for carrying out the method explained above, wherein a continuously driven conveyor device for a mineral wool web containing an uncured binder is assigned a striking device which is designed such that it is mechanical on the top and / or bottom of the mineral wool web Impacts with high impact frequency that the impact device is followed by a hardening furnace, and that a plate cutting device is provided after the hardening furnace.
  • FIG. 1 shows schematically an embodiment of a device according to the invention.
  • a mineral wool web 1 is continuously moved in the direction of arrow 12 by means of a conveyor device, not shown.
  • a mineral wool web is usually produced in such a way that the mineral fibers produced by known aggregates are collected in a collecting chamber and previously sprayed with a binder.
  • the conveyor device usually consists of endless conveyor belts on which the mineral wool web rests or, according to FIG. 3, of conveyor rollers 10, 11.
  • the mineral wool web is usually subjected to length-height compression. Conveyor belts or conveyor rollers on the underside and on the top of the mineral wool web serve this purpose. However, this pre-compression is carried out so that it is uniform over the entire cross-section of the mineral wool web.
  • the mineral wool web is now subjected to an impact treatment with a high impact frequency.
  • a simplified impact device 2 is used, which is moved up and down in the direction of arrow 7 with a high impact frequency, the impact bar 3 penetrating into the surface layer of the mineral wool web 1 by a predetermined amount.
  • the striking device 2 advantageously has a motor drive with an eccentric and lifting rod or a hydraulic one or pneumatic drive. Such drives are known per se and are therefore not shown in detail in the drawing.
  • the impact device 2 with the impact bar 3 is adjustable in height so that mineral wool webs of any thickness can be treated.
  • the lifting height of the striking device 2 can be adjusted or regulated in accordance with the thickness of the layer to be compressed.
  • the drive is designed such that the stroke frequency can be set or regulated between approximately 500 / min to 6000 / min.
  • the beating device 2 is, as I said, equipped with a beater bar 3 which penetrates into the surface layer of the mineral wool web. This results in a compacted top layer 9 with a smooth surface and a non-compacted bottom layer 8.
  • the blow bar 3 is preferably arranged transversely to the longitudinal direction of the mineral wool web 1 and movable in a plane perpendicular to the large surfaces of the mineral wool web 1.
  • Figure 2 shows an end part of the blow bar 3 in a perspective view, in the simplest possible construction.
  • the length 6 of the blow bar 3 corresponds to the width of the mineral wool web.
  • the blow bar has a rectangular cross section and a width of approximately 1 to 50 mm and a height 5 of approximately 10 to 500 mm.
  • the impact device 2 is shown above the mineral wool web 1.
  • the striking device can also be arranged under the underside of the mineral wool web or two striking devices can be provided in mirror image to one another both on the top and on the underside. In in the latter case, an end product is obtained which densifies on both large surfaces and has correspondingly hard layers in the end result.
  • blow bar 13 has a trapezoidal cross section with a surface 14 that rises obliquely upward in the direction opposite to the conveying direction 12 of the mineral wool web 1.
  • the rising surface 14 of the blow bar 13 is designed, in particular in the upper region, in a step-like manner according to reference number 15.
  • the lower region 16 of the rising surface 14 is expediently smooth, as is the lower surface 17, so that during the impact treatment any unevenness that may arise on the outer surface of the compacted layer is compensated for.
  • the exemplary embodiment of the blow bar 18 according to FIG. 5 has a circular sector-like cross section with a surface 19 that rises obliquely upwards, this inclined surface 19 being provided with corrugations 20 or with ribs or teeth, particularly in the upper region.
  • the lower part 21 of the inclined surface 19 is expediently designed to have a smooth surface again.
  • Figure 6 shows a blow bar 22 with a lower curved smooth surface. Such a blow bar is particularly suitable when a thin, very highly compressed layer is to be formed. For all blow bars 3, 13, 18 and 22 applies that these advantageously consist of hardened metal or hard metal.
  • an end product which consists of an uncompressed or, if necessary, uniformly pre-compacted layer, a further layer moderately compacted by impact treatment and an outer, very highly compacted and corresponding hard layer, generally speaking, that is to say an end product with several differently compacted layers.
  • several correspondingly set impact devices can be arranged one behind the other, that is, first an impact device that compresses a thicker outer layer and then another impact device that subsequently recompacts some of this compacted layer in the area of the surface.
  • a further advantageous embodiment of the device according to the invention is that the striking device 2 is designed and arranged so as to be retractable and extendable in the area of an overall production system between a precompaction device in which the mineral wool web 1 is compressed uniformly over its entire cross section and the hardening furnace (not shown in the drawing) is. On in this way you can drive to different production lines with one and the same impact device and use them there either.
  • the striking device can also be designed such that it can be adjusted in height in such a way that it can be put out of operation and does not hinder normal production operation if mineral wool webs or plates previously customary are to be produced on a production line with a uniform compression over the entire cross-section.
  • the end products which can be produced by the invention are preferably used in buildings, specifically in the roof, wall or floor area, where a particular punctual strength of the upper or lower surface is important.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Glass Compositions (AREA)
  • Laminated Bodies (AREA)
  • Porous Artificial Stone Or Porous Ceramic Products (AREA)
EP93915880A 1992-08-05 1993-07-12 Verfahren zum herstellen von mineralwolleplatten und vorrichtung zur durchführung des verfahrens Expired - Lifetime EP0654100B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4225840 1992-08-05
DE4225840A DE4225840C1 (de) 1992-08-05 1992-08-05 Verfahren zum Herstellen von Mineralwolleplatten und Vorrichtung zur Durchführung des Verfahrens
PCT/EP1993/001818 WO1994003671A1 (de) 1992-08-05 1993-07-12 Verfahren zum herstellen von mineralwolleplatten und vorrichtung zur durchführung des verfahrens

Publications (2)

Publication Number Publication Date
EP0654100A1 EP0654100A1 (de) 1995-05-24
EP0654100B1 true EP0654100B1 (de) 1996-12-18

Family

ID=6464869

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93915880A Expired - Lifetime EP0654100B1 (de) 1992-08-05 1993-07-12 Verfahren zum herstellen von mineralwolleplatten und vorrichtung zur durchführung des verfahrens

Country Status (7)

Country Link
EP (1) EP0654100B1 (cs)
AT (1) ATE146534T1 (cs)
CZ (1) CZ283012B6 (cs)
DE (2) DE4225840C1 (cs)
HU (1) HUT69746A (cs)
SK (1) SK13695A3 (cs)
WO (1) WO1994003671A1 (cs)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9717484D0 (en) 1997-08-18 1997-10-22 Rockwool Int Roof and wall cladding
FR2814474B1 (fr) * 2000-09-27 2002-11-29 Saint Gobain Isover Procede et ensemble de fabrication de feutres formes de fibres minerales
EP1386042A1 (de) * 2001-05-08 2004-02-04 Deutsche Rockwool Mineralwoll GmbH & Co. OHG Dämmstoffplatte zur dämmung von au enwänden aus profilblechen
PL209777B1 (pl) * 2001-11-14 2011-10-31 Rockwool Int Element izolacyjny stanowiący płat z włókna mineralnego oraz jego zastosowanie
EP4090521B1 (en) * 2020-01-17 2025-08-20 Rockwool A/S Curing oven and method of controlling a curing oven

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1774393A (en) * 1928-12-28 1930-08-26 Miller William Lott Machine for making mineral or rock wool bat
AT199048B (de) * 1957-05-02 1958-08-11 Fehrer Ernst Vorichtung zum Vergleichmäßigen eines auf einem Förderband kontinuierlich weiterbewegten Haar- oder Faservlieses
US4109353A (en) * 1974-12-27 1978-08-29 Kimberly-Clark Corporation Apparatus for forming nonwoven web
CA1057183A (en) * 1976-05-06 1979-06-26 Malcolm J. Stagg Method and apparatus for producing multiple density fibrous product
DE2940425A1 (de) * 1979-10-05 1981-04-16 Erste Deutsche Basaltwolle Kg A. Messler, 8712 Volkach Matte aus mineralfasern
DK155163B (da) * 1986-06-30 1989-02-20 Rockwool Int Fremgangsmaade ved kontinuerlig fremstilling af mineraluldsplader
AT387798B (de) * 1987-12-11 1989-03-10 Kuehnsdorfer Gmbh Verfahren zur herstellung einer lagerfaehigen, handhabbaren fasermatte und nach dem verfahren hergestellte fasermatte
DE3832773C2 (de) * 1988-09-27 1996-08-22 Heraklith Holding Ag Verfahren und Vorrichtung zur Herstellung von Mineralfaserplatten

Also Published As

Publication number Publication date
DE59304834D1 (de) 1997-01-30
CZ27795A3 (en) 1995-05-17
WO1994003671A1 (de) 1994-02-17
CZ283012B6 (cs) 1997-12-17
HU9500344D0 (en) 1995-03-28
HUT69746A (en) 1995-09-28
SK13695A3 (en) 1995-09-13
DE4225840C1 (de) 1994-04-28
ATE146534T1 (de) 1997-01-15
EP0654100A1 (de) 1995-05-24

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