EP1708876A1 - Procede de fabrication d'une bande de materiau isolant a partir de fibres minerales et bande de materiau isolant ainsi obtenue - Google Patents

Procede de fabrication d'une bande de materiau isolant a partir de fibres minerales et bande de materiau isolant ainsi obtenue

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Publication number
EP1708876A1
EP1708876A1 EP04804050A EP04804050A EP1708876A1 EP 1708876 A1 EP1708876 A1 EP 1708876A1 EP 04804050 A EP04804050 A EP 04804050A EP 04804050 A EP04804050 A EP 04804050A EP 1708876 A1 EP1708876 A1 EP 1708876A1
Authority
EP
European Patent Office
Prior art keywords
insulating material
lamination
web
webs
material web
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.)
Granted
Application number
EP04804050A
Other languages
German (de)
English (en)
Other versions
EP1708876B1 (fr
Inventor
Gerd-Rüdiger Klose
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
Priority claimed from DE102004047193A external-priority patent/DE102004047193A1/de
Application filed by Deutsche Rockwool Mineralwoll GmbH and Co OHG filed Critical Deutsche Rockwool Mineralwoll GmbH and Co OHG
Priority to PL04804050T priority Critical patent/PL1708876T3/pl
Priority to SI200431923T priority patent/SI1708876T1/sl
Publication of EP1708876A1 publication Critical patent/EP1708876A1/fr
Application granted granted Critical
Publication of EP1708876B1 publication Critical patent/EP1708876B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • D04H1/4218—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/28—Splitting layers from work; Mutually separating layers by cutting
    • 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
    • D04H1/40—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
    • D04H1/645—Impregnation followed by a solidification process
    • 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)
    • 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
    • D04H13/00—Other non-woven fabrics
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/7654—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only comprising an insulating layer, disposed between two longitudinal supporting elements, e.g. to insulate ceilings
    • E04B1/7658—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only comprising an insulating layer, disposed between two longitudinal supporting elements, e.g. to insulate ceilings comprising fiber insulation, e.g. as panels or loose filled fibres
    • E04B1/7662—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only comprising an insulating layer, disposed between two longitudinal supporting elements, e.g. to insulate ceilings comprising fiber insulation, e.g. as panels or loose filled fibres comprising fiber blankets or batts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
    • E04B9/045—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like being laminated
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B2001/7683—Fibrous blankets or panels characterised by the orientation of the fibres
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23—Sheet including cover or casing
    • Y10T428/237—Noninterengaged fibered material encased [e.g., mat, batt, etc.]

Definitions

  • the invention relates to a method for producing an insulation web of mineral fibers, in particular of rock wool and / or glass wool, in which the mineral fibers are produced from a melt and deposited on a conveyor as a primary web, the primary web stabilized at right angles to its longitudinal extent and as a secondary web on a secondary conveyor is then moved, the secondary non-woven is then moved so that the mineral fibers substantially take a course perpendicular to the large surfaces of the secondary web and the secondary web is then divided by a separating cut parallel to the large surfaces of the secondary web in at least two insulating material webs , each having a large surface and a substantially coextensive, the large surface opposite arranged separating surface.
  • the invention further relates to an insulating material web of mineral fibers bound with a binder, in particular of mineral wool and / or glass wool, having a large surface area and a separating surface formed when dividing a secondary nonwoven fabric into two insulating material webs, the mineral fibers being perpendicular to the parting surface in the region of the parting surface in the region of the surface and at an angle deviating from 90 ° to the large surface, in particular running parallel to the large surface, and with a lamination.
  • a binder in particular of mineral wool and / or glass wool
  • Insulating materials made of vitreous solidified mineral fibers are, according to the chemical composition, differentiated commercially into glass wool and rock wool insulation materials. Both varieties differ in the chemical composition of the mineral fibers.
  • the glass wool fibers are made from silicate melts that contain high levels of alkalis and boron oxides that act as fluxes. These melts have a wide processing range and can be removed with the help of rotating bowls whose walls have holes, to relatively smooth and long mineral fibers, which are at least partially bound at least partially with mixtures of thermosetting phenol-formaldehyde and urea resins.
  • medium in the glass wool insulating materials is about 5 to about 10% by mass and is also bounded above by the fact that the character of a non-combustible insulating material is to be retained.
  • the bond can also be made with thermoplastic binders such as polyacrylates.
  • the fiber mass is added to other substances, such as oils in amounts below about 0.4% by mass for hydrophobing and dust binding.
  • the impregnated with binders and other additives mineral fibers are collected as a fiber web on a slow-speed conveyor. In most cases, the mineral fibers of several shredding devices are deposited successively on this conveyor. The mineral fibers are oriented largely directionless in one plane. But they store very flat on top of each other. By slight vertical pressure, the fibrous web is simultaneously compacted to the desired density and over the conveying speed of the conveyor to the required density and cured the binder in a hardening furnace by means of hot air, so that the structure of the fibrous web is fixed.
  • the primary nonwoven consists of relatively coarse fiber flakes, in the core areas of which higher binder concentrations are present, while in the peripheral areas weaker or non-bonded mineral fibers predominate.
  • the mineral fibers are aligned in the fiber flakes approximately in the transport direction.
  • Rock wool insulation materials have binder contents of about 2 to about 4.5% by weight. With this small amount of binders, only part of the mineral fibers are in contact with the binders.
  • the binders used are predominantly mixtures of phenol, formaldehyde and urea resins. A part of Resins are already substituted by polysaccharides.
  • inorganic binders are only used for special applications of insulating materials, as they are much more brittle than the largely elastic to plastic organic binders, which counteracts the desired character of insulating materials made of mineral fibers as elastic-resilient building materials comes.
  • the additives used are mostly high-boiling mineral oils in proportions of 0.2% by mass, in exceptional cases also about 0.4% by mass.
  • the primary nonwovens are deposited by means of a pendulum-suspended conveyor across another conveyor, which the
  • the forces acting on the fiber web cause binder-rich core zones are compacted and unfolded into narrow lamellae, resulting in main folds with folds in flanks.
  • the less bound or binder-free mineral fibers are slightly rolled in the interstices of the folds and between the lamellae and thereby slightly compressed.
  • the fine structure thus consists of relatively stiff slats, which have a certain flexibility due to their numerous folds, but are relatively stiff parallel to the folding axes and form spaces which are easily compressible.
  • the compressive strength and the transverse tensile strength of the fibrous web clearly increase in comparison with a normal, in particular extremely flat, arrangement of the mineral fibers.
  • the flexural strength of the fibrous web or of the sections separated from it in the form of plates or Dämmfilzen is therefore significantly higher in the transverse direction than in the production direction.
  • the bending strength in the transverse direction is on the order of three to four times as high as the bending strength in the direction of production. This dependence of the mechanical properties of the orientation of the mineral fibers in the insulating material is used for the production of lamellae for lamellar plates and commercially available lamellar sheets called products.
  • Slats are usually 200 mm wide insulating elements, which are cut in the direction of production of at least a correspondingly thick fiber web.
  • the mineral fibers in the fiber web or in the particularly solid lamellae are oriented at right angles to the cut surfaces, which are now the large surfaces of the lamellae.
  • Slats with densities of more than about 75 kg / m 3 are therefore suitable as tensile and pressure resistant insulating layer on the outer walls of buildings and can be glued on the outer wall and then plastered with a reinforced plaster layer.
  • Such insulation is referred to as a thermal insulation composite system.
  • the pressure-resistant lamella is sufficiently flexible in the longitudinal direction so that it can also be glued onto curved components.
  • Slat plates in the bulk density range of about 30 to about 100 kg / m 3 , preferably ⁇ 60 kg / m 3 are separated in the desired thickness in the production direction as lamellae of between about 75 to 250 mm thick fiber web lying flat transverse be adhered to a closed support material, such as aluminum, aluminum composite, grid-reinforced aluminum-polyethylene composite films and similar films or, for example, on paper webs.
  • the individual slats are pressed together only under slight pressure and usually form no closed insulation layer.
  • the specific amounts of, for example, dispersion adhesives are very low.
  • slat plates can also be made from glass wool fiber webs with mineral fibers running at right angles to the large surfaces.
  • the smooth mineral fibers are directed in these lamellae pronounced parallel to each other and very easy to compress against lateral forces, especially since the bulk densities are generally lower than that of the lamella plates made of rock wool insulation materials.
  • Lamellae can also be used to produce lamellar webs having widths of, for example, 500 mm or 1000 mm, thicknesses of approximately 20 mm to approximately 100 mm and lengths of several meters. Due to the orientation of the mineral fibers at right angles to the large surfaces, even surfaces, for example of large ventilation channels, can be provided with a flat and relatively solid insulating layer. At the same time, due to the high compressibility in the direction of the width of the fins, i. in the longitudinal direction of the slat webs are easily performed around pipelines with small diameters and there give a uniform sheath. This behavior is favored by the joints between the individual lamellae, since here the transverse stiffening of the insulating material is interrupted.
  • lamellae The production of lamellae is complicated in terms of process engineering and leads to a low throughput speed of the production plants. Moreover, the bonding technique is essentially unsuitable for the partially heavy-weight blades.
  • An adhesive bond between adjacent lamellae may also be weakened by loose mineral fibers or mineral fiber fragments (dust) being present in the region of the adhesive surfaces.
  • Laminated lanes are rolled up tightly for storage and transport and wrapped in a covering.
  • the lamellae are stressed at the beginning and at the end of a role strong on shear. After unrolling these slats fall off easily.
  • the lamellae are even thrown off when the lamella web is allowed to unroll itself after removal of the sheaths by the action of the large restoring forces.
  • Austrollvorgang the end of the role whipping like a whip through the air, so that already partially detached lamellae are completely replaced by the acceleration or the strong impact of the end on the ground.
  • carrier layers which are only partially glued to the lamellae are largely eliminated. These include, for example, mesh fabric made of glass fibers or similar planar structures.
  • the lamella plates affixed as individual elements have the processing technology advantage that necessary separating cuts can either be made along the transverse joints between adjacent lamellae or these serve at least as an auxiliary line for the guidance of a cutting tool.
  • the transverse joints can also be marked as a kink on the carrier layer to adapt by folding the slats, the slats in size with respect to the installation conditions.
  • This orientation of the mineral fibers in the primary non-woven can be done in a separate device, but is suitably made in conjunction with a curing oven.
  • the endless fibrous web between two pressure belts, of which at least one is movable in the vertical direction flows through hot air in the vertical direction.
  • the printing tapes have pressure-resistant elements with holes in which surface areas of the fiber web press in, giving the surfaces a profiling. In the two surfaces of the fiber web may lead to a further alignment of the mineral fibers, a further compression compared to the underlying areas and possibly to a slight binder enrichment.
  • the fiber web with the binding and / or impregnating agents contained therein is heated, so that moisture present in the fiber web is expelled and the binders cure, in which they form connecting films or solids.
  • the fibrous web by solidification of the binder is shown in longitudinal section a structure in which the mineral fibers are oriented in the core of the primary web predominantly perpendicular to the large surfaces of the endless fiber web. In the near-surface areas, the mineral fibers are aligned parallel to the large surfaces.
  • the mineral fibers may also be mushroom-shaped and / or compressed downwards between the zones of mineral fibers running at right angles to the large surfaces, given correspondingly large vertical pressures. Between the arcuately deflected paths of the primary web generally remain small gussets that occur as different widths and different depths transverse grooves in the two major surfaces of the endless fiber web.
  • the higher-density zones with the mineral fibers running at right angles to the large surfaces differ significantly from the intermediate zones with a flat arrangement of the mineral fibers.
  • the structure In cross-section, the structure is less uniform than in insulation boards used to make fins. For example, the bending tensile strength is lower because of the inhomogeneity of the structure at a comparable density.
  • the shallow mineral fibers in the near-surface zones significantly reduce the thermal conductivity at right angles to the large surfaces. It is known from EP 1 321 595 A2 that the transverse tensile strength between these mineral fibers is weak, so that these lying flat mineral fibers are removed in order to make firmer connections of the insulation boards produced therefrom, for example with linings for the production of sandwich elements or to achieve the use as a plaster base in thermal insulation composite systems.
  • EP 0 867 572 A2 further describes an insulating element of mineral fibers, consisting of a mineral fiber fleece and / or a plurality of interconnected lamellae and at least one applied on a main surface lamination in the form of a film.
  • This insulating element thus consists of a thin uniform fibrous web of flat überchroiegenden and interconnected individual mineral fibers with a thickness of less than 15 mm and a lamination and several interconnected slats. The lamination can be applied both on the thin fiber web and on the lamellae.
  • Strength increase can have an effect in the process described in EP 0 741 827 B1 as well as in DD 248 934 A3 in that, when passing through the curing oven, the respectively uppermost zone of the fibrous web, which is a few micrometers to millimeter thick, is more densely compressed and enriched with binding agents, than the immediate zones below. This makes it possible to make a firmer contact with the lamination, even though the transverse tensile strength of the fibrous web, which is decisive for its use, is primarily influenced by the deeper zones.
  • the object of the invention to improve a generic method for producing an insulating material web from mineral fibers in such a way that the insulating web to be produced is improved or simplified with regard to its strength properties and processability, in particular in the area of external building surfaces and pipe jacket lateral surfaces.
  • the invention is based on the invention of providing a generic insulation web of mineral fibers bound with a binder, which has improved processing properties and in particular also improved strength properties and further properties of lamellae or lamellar webs or plates in at least the same quality.
  • the solution to this problem provides, in the case of a normal procedure, that at least one of the parting surfaces of the two insulating material layers a lamination is applied.
  • the solution to the problem with an insulating material web according to the invention provides that the lining is arranged on the separating surface.
  • the insulation webs according to the invention produced by the method according to the invention should as far as possible have properties consistent with the basic characteristic of lamella plates.
  • the lamination is not applied to the compressible, weakly bonded regions of the insulating material web, but to the cross-resistant and at the same time pressure-resistant parting surfaces, namely into regions with fibers oriented at right angles to the lamination.
  • the surfaces arranged opposite the parting surfaces are compressible in the direction of their surface normals and can accordingly adapt to unevenness of the surface to be insulated, for example a building facade, while the separating surfaces then arranged outboard remain smoothly aligned with the lining.
  • Flanges of ventilation ducts, sleeves or clamps in pipelines can be insulated up to a certain height, for example, with such insulating material webs, without this having an effect on the formation of the outer surfaces of the thermal insulation.
  • Flanges of ventilation ducts, sleeves or clamps in pipelines can therefore be overlapped with a corresponding insulation sheet of mineral fibers such that the outer surface has no bumps.
  • the folds caused by the primary unfolding of the primary nonwoven can act as a bending or bending region, as a result of which the internally arranged surface of the insulating material strip conforms more easily to the externally arranged round surface of the surface to be insulated in accordance with a polygonal traction.
  • insulation webs for exterior wall surfaces of a ventilated clothing which are used, for example, in the form of roll-up insulation felts or insulation boards and are also used in the core insulation behind an outer masonry shell, the compressibility of the insulating material web results substantially. before economic benefits in terms of processing and installation of the insulation material web according to the invention.
  • the mineral fibers extending in the large surfaces substantially parallel to the large surfaces are removed.
  • the large surfaces are also processed such that in the large surfaces, a grain of fiber predominates substantially perpendicular to these large surfaces.
  • the fibrous web which according to this invention is finally subdivided into at least two insulating material webs, has mineral fibers bound with binders, which if appropriate are impregnated by hydrophobizing and / or dust-binding agents or other additives and are of endless design.
  • the mineral fibers are oriented in the interior of the fibrous web to near-surface areas predominantly perpendicular to the outer major surfaces of the fibrous web. Below the two large outer surfaces of the fiber web, the mineral fibers are oriented at decreasing angles to parallel to the large surfaces. In the areas of large surfaces, the mineral fibers may be bound in a higher density and with additional binders.
  • the fibrous web can be separated in front of a curing oven by the parallel to the large surfaces of the fibrous web or the secondary nonwoven separating cut to form the insulating material webs.
  • the separating cut can be carried out centrally but also off-center, so that either two are the same Material thickness insulating material webs or insulating material webs of different material thickness can be produced.
  • By separating cut the dividing surfaces are formed, are applied to the air-permeable and / or heat-resistant nonwovens, tissue and / or scrim.
  • These laminations mentioned above can consist, for example, of glass, natural and / or organic chemical fibers.
  • the chemical fibers can be formed, for example, from carbon, aramid, terephthalate, polyamide or polypropylene fibers or from mixtures of these above-mentioned chemical fibers.
  • the laminations are tension-resistant, web-shaped laminations, wherein the laminations are formed in one or more layers. If the lamination has several layers, these layers can be formed from different fibers. In particular, for example, glass fiber random webs can be bonded to nonwoven webs of thermoplastic fibers or perforated thermoplastic films.
  • the tension-resistant, sheet-like laminations are bonded to the insulation web, in particular hot melt adhesives have been found suitable for this purpose, which are applied linearly and / or punctiform on the lamination and / or the parting surface of the insulating material.
  • the laminations can also serve as outer reinforcing, protective, filtering and / or decorative layers.
  • the laminations In the separation of the fiber web in the partial webs to be laminated, namely insulating material webs, it can lead to an impairment, namely reduction of the adhesiveness of the binder contained in the fibrous web.
  • the binders present in the fibrous web can be activated, for example, by solvents, in particular water.
  • the insulating material webs run over contact rollers, through which they are wetted with the solvent.
  • further binders preferably in small quantities, can be sprayed onto the surfaces and the separating surfaces of the insulating material webs.
  • the lamination has at least on one side, at least on the surface facing the release surface, a thin layer of, for example, a high-viscosity dispersion adhesive or a water-silicate plastic adhesive filled, for example, with pigments, which is arranged as an impregnation.
  • the prerequisite is that the lamination has sufficient material thickness to be able to support this thin layer.
  • other adhesives can also be used, provided that they have a viscosity which makes it possible for the adhesives not to be absorbed by the insulating material webs, which frequently act in a suction capillary manner, so that the insulating webs subsequently saturate with brittle fragility with these adhesives.
  • the two insulation webs formed from the secondary nonwoven web can be brought together in front of the curing oven together with the laminations applied to the respective parting surfaces and passed together through the curing oven in which the binder of the secondary web and the adhesive between the lining and the parting surface solidified or cured by means of hot air become. Subsequently, the insulation webs thus formed can be trimmed in the longitudinal direction and cut to the appropriate length, wherein the cutting is carried out in lengths that lead to a wound insulation web or in shorter sections to insulation boards.
  • the insulating materials made of the insulating material for example, rockwool have densities between 23 kg / m 3 and 70 kg / m 3 , while corresponding insulating sheets of glass wool gross densities in the range between 12 kg / m 3 and 55 kg / m 3 have.
  • the secondary non-woven is subdivided before the curing oven in the insulating material webs, which are provided before the curing oven with the laminations on the respective separation surfaces.
  • the secondary nonwoven is subdivided into the insulating material webs only after passing through the curing oven, which consequently can not be connected to the lamination until after passing through the curing oven.
  • the secondary nonwoven obtains its final structure before splitting into the insulating material webs by curing the binder in the curing oven.
  • the separating cut is carried out with a band saw, with emerging sawdust being sucked off immediately in the area of the band saw so that it does not adhere to the separating surfaces and adversely affects the bonding of the lining to the insulating material webs.
  • the adhesive for bonding the insulating material webs with the laminations is applied either directly to the parting surfaces of the insulation webs or to the lamination, if the laminations are not already formed at the factory with a corresponding adhesive layer.
  • films are suitable as laminations.
  • an aluminum-polyethylene composite film is suitable as a lining for the purposes described above.
  • This aluminum-polyethylene composite film may also be reinforced with fiberglass mesh.
  • the polyethylene layer is heated during the application of the lamination on the parting surface of the insulating material web by means of a follower heating roller, so that this polyethylene layer softens and welded to the tips of the mineral fibers of the insulation web.
  • the two formed from the secondary nonwoven insulating material webs are identical, so that both insulation webs also carry identical laminations. But there is also the possibility that the two insulation webs are formed differently, in particular with regard to the lamination without further notice. It has already been pointed out above that the two insulating panels can have different material thickness, if the separating cut is not performed centrally. In addition, the two insulating material webs produced from a secondary nonwoven can also be formed differently with regard to the type and material thickness of the lining. Furthermore, it is also possible to form only one insulation web with a lamination, while the second insulation web continues to process without lamination, for example, is wound up.
  • the laminations are trimmed edge-side together with the insulating material webs, so that the laminations are flush with the insulating material webs.
  • inventive insulating material for the insulation of pipes they are running with their longitudinal axis direction Narrow sides arranged adjacent to each other on the pipe, so that forms a complete insulation of the pipeline.
  • the transition region of the joints of adjacent insulating material webs can in this case be covered in a simple manner with self-adhesive film strips, since the corresponding insulation webs have sufficient rigidity, which is otherwise given only in known from the prior art lamellar mats.
  • the self-adhesive film tapes can also already be part of the lamination, as far as it extends beyond a longitudinal edge region of the insulating material web.
  • the insulating material web according to the invention is particularly suitable for the insulation of pipelines, which serve to guide media whose temperature is below ambient temperatures.
  • the penetration of water vapor can be reliably prevented, as far as the lamination is formed of vapor-damping composite films, of which an edge region protrudes over an extending in the longitudinal axis direction of the insulating material side surface, so that this edge region can be adhered to the lamination of an adjacently arranged insulation web.
  • an insulating material according to the invention with a one-sided protruding edge region of the lamination in addition to an embodiment of an insulating material according to the invention with a one-sided protruding edge region of the lamination of course, an embodiment is conceivable in which the lamination projecting beyond two, in particular parallel edge regions of the insulating material web. In order to facilitate the winding of such insulation web, it can be provided that at least in the region of a protruding edge region of the lamination, a thin paper strip is rolled up with.
  • the glued laminations in particular the glued films have markings.
  • the lamination is formed as an aluminum foil, it is possible in this connection to provide regularly recurring imprints or markings applied in the form of, for example, beams or arrows. It has proven to be sufficient if the markers are arranged in both extending in the longitudinal axis direction of the insulating material edge regions and have a length between 2 and 10 cm. In the alternative, are The markings arranged at intervals of about 10 cm, so that the markings are used in particular as an aid in cutting the insulating material webs. If the markings are designed as arrows, they can also indicate the conveying direction of a medium in a pipeline or a ventilation duct.
  • the markings can also be applied by means of a laser beam.
  • Figure 1 shows a first portion of a schematically illustrated plant for producing an insulation sheet of mineral fibers
  • FIG. 2 shows a second section of the installation for carrying out the method for producing an insulating material web from mineral fibers according to FIG. 1.
  • FIG. 1 shows the first section of a plant 1 for producing an insulation web 2 (FIG. 2) from mineral fibers 3.
  • the mineral fibers 3 are produced from a silicate material, for example natural and / or artificial stones, by melting the silicate material in a cupola furnace 4 the melt 5 is fed to a fiberizing unit 6.
  • the fiberizing aggregate 6 has a plurality of spinning wheels 7 driven in rotation, of which only one spinning wheel 7 is shown in FIG.
  • the cupola 4 has on the output side a spout 8, via which the melt 5 flows from the cupola 4 to the spinning wheels 7. Due to the rotational movement of the spinning wheels 7, the mineral fibers 3 are formed from the melt 5 and collected on a first conveyor belt 9.
  • a primary nonwoven fabric 10 forms on this first conveyor belt 9, in which the mineral fibers 3, which are mixed with binder in the fiber fractionation unit 6, are aligned in substantially the same direction and arranged in a laminar manner.
  • the primary nonwoven 10 is then transferred to a downstream processing station 12 via a second conveyor belt 11 which, in contrast to the first conveyor belt 9, is not a collecting conveyor belt but a transport conveyor belt.
  • the general transport direction of the primary web 10 is changed. This change takes place from the original longitudinal direction into a transport in the original transverse direction of the primary web 10.
  • the conveying direction is shown in FIG. 1 by an arrow 13.
  • the primary web 10 is transported over a roller 14 whose purpose is to change the transport direction of the primary web 10 from a substantially horizontal direction in a substantially vertical direction to supply the primary web 10 to another processing station 15.
  • This further processing station 15 has two parallel conveyor belts 16, 17, between which the primary web 10 is guided.
  • the conveyor belts 16, 17 are arranged to oscillate and oscillate the primary web 10 at right angles to its longitudinal extent as a secondary web 18 on a further conveyor, not shown, which runs parallel to the conveyor belts 9 and 11.
  • the thus suspended secondary web 18 is then fed to a compression station 19, in which the secondary web 18 is compressed.
  • the compacting station 19 has an upper conveyor belt 20 and a lower conveyor belt 21, between which the secondary web 18 runs.
  • the two conveyor belts 20 and 21 of the compression station 19 are arranged in a pendulous manner and, in addition to the function of compacting the secondary web 18, also function to lecturpreln the compacted secondary web 18 in the longitudinal direction meandering.
  • This floating of the secondary web 18 causes the secondary web 18 in its central region has an orientation of the mineral fibers 3, the right angle is aligned to the large surfaces 22, 23.
  • the secondary nonwoven 18 has an orientation of the mineral fibers 3 that are at an angle other than the orthogonal to the large surfaces 22, 23 to a parallel orientation relative to these large surfaces 22, 23 varied. This arrangement and orientation of the mineral fibers 3 in the secondary web 18 results from the Aufpendelh of the secondary web 18 following the compression station 19th
  • the suspended secondary web 18 is fed immediately after the swaying of a processing station 24, which has an upper conveyor belt 25 and a lower conveyor belt 26 and their conveying speeds compared to the conveying speed of the compression station 19 is lower, so that the suspended Sekundärvlies 18 compressed in its longitudinal direction and the individual meander of the suspended Sekundärvlieses 18 are pushed together.
  • the processing station 24 is followed by a further processing station 27, which also has an upper conveyor belt 28 and a lower conveyor belt 29, between which the suspended secondary web 18 is conveyed.
  • the processing station 27 has a further reduced conveying speed of the secondary web 18 in order to continue the compaction and the homogenization of the suspended secondary web 18.
  • the thus prepared secondary web 18 forms an end product, which can be further processed to form certain insulating material webs 2 of mineral fibers 3, such as insulation boards or insulation panels 2, as will be described below with reference to Figure 2.
  • the meandering unfolded and compressed secondary web 18 is fed to a curing oven 30 by two parallel conveyor belts 31 and 32 are arranged.
  • hot air is conveyed through the conveyor belts 31, 32 and thus also through the secondary non-woven 18, which hot air cures the binder contained in the Sekundärviies 18 for connecting the individual mineral fibers 3.
  • Due to the curing of the binder is the Secondary web 18 in its geometric shape, which it has received before the curing oven through the processing stations 12, 15, 19 and 24 and 27 fixed.
  • the distance of the two conveyor belts 31, 32 in the curing oven 30 is set to the material thickness of the secondary web 18 and limited by the conveying speed of the conveyor belts 31, 32 in relation to the required amount of hot air to cure the binder.
  • the secondary web 18 passes through a first sawing station 33, which has a band saw 34 with a band-shaped saw blade 35, with which saw blade 35 divides the secondary web 18 by a separating cut parallel to the large surfaces 22, 23 into two insulation webs 2 each having a large surface 22, 23 and a substantially coextensive, the respective large surface 22, 23 opposite separating surface 36 have.
  • the secondary web 18 having a width of 2,400 mm is then subdivided into four part webs by a circular saw with a circular saw blade 37 in the longitudinal direction, each sub web ultimately forming an insulating web 2 and having a width of 1,200 m.
  • the insulation webs 22 separated in the longitudinal direction by the separating cut parallel to the large surfaces 22, 23 of the secondary nonwoven 18 are lifted apart from one another and fed to a laminating station 38 in which a lining 39 is applied to the separating surfaces 36 of the insulating webs 2.
  • the lamination 39 is hereby stored for each insulating material web 2 as a laminating roll 40, wherein the lamination 39 is deducted with the promotion of the insulating material web 2 of the laminating roll 40 and bonded to the same surface with the insulating material web 2.
  • the insulating panels 2 are wound up and packed.
  • the insulating material webs 2 are cut to length in a predetermined length of the secondary web 18 by a section perpendicular to the longitudinal direction of the insulating material web 2.
  • the liner 39 is formed as an air-permeable and heat-resistant nonwoven fabric of glass fibers and forms an outer reinforcing, protective, filtering and decorative layer.
  • the connection of the lamination 39 with the insulating material web 2 in the laminating station 38 is effected by a sprayed onto the insulating material 2 high-viscosity dispersion adhesive, which is sprayed over the entire surface, selectively or in strips depending on the required connection between the lining 39 and the insulating material 2 and its adhesive effect.
  • the lamination 39 is arranged on the separating surface 36 of the insulating material web 2, so that the lamination 39 is connected to the fiber tips at right angles to the separating surface 36 of the insulating material web 2. It may additionally be provided that, prior to winding the insulation web 2, the mineral fibers 3 present in the region of the large surfaces 22, 23, which deviate from a rectangular orientation to the large surfaces 22, 23, are removed by cutting or grinding.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Structural Engineering (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Acoustics & Sound (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

Procédé de fabrication d'une bande de matériau isolant à partir de fibres minérales, selon lequel les fibres minérales sont fabriquées à partir d'une matière fondue et déposées en tant que matière non tissée primaire sur un dispositif de transport, la matière non tissée primaire est pliée en accordéon à angle droit par rapport à son extension longitudinale et déposée en tant que matière non tissée secondaire sur un second dispositif de transport, la matière non tissée secondaire est ensuite déplacée de manière telle que les fibres minérales prennent une orientation essentiellement perpendiculaire aux grandes surfaces de la matière non tissée secondaire et ladite matière non tissée secondaire est alors divisée en au moins deux bandes de matériau isolant par une coupe de séparation parallèle aux grandes surfaces de la matière non tissée secondaire, ces deux bandes possédant chacune une grande surface et une surface de séparation de superficie essentiellement identique et située à l'opposé de la grande surface. Pour améliorer un tel procédé de fabrication d'une bande de matériau isolant en fibres minérales de manière que cette bande de matériau isolant à fabriquer possède des propriétés améliorées de résistance et une maniabilité meilleure ou plus simple, en particulier dans le domaine des surfaces extérieures de bâtiments et des gaines isolantes pour conduites, selon la présente invention, un contrecollage (39) est appliqué sur au moins une des surfaces de séparation (36) des deux bandes (2) de matériau isolant.
EP04804050A 2004-01-31 2004-12-18 Procede de fabrication d'une bande de materiau isolant a partir de fibres minerales et bande de materiau isolant ainsi obtenue Active EP1708876B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL04804050T PL1708876T3 (pl) 2004-01-31 2004-12-18 Sposób wytwarzania pasma materiału izolacyjnego z włókien mineralnych oraz pasmo materiału izolacyjnego
SI200431923T SI1708876T1 (sl) 2004-01-31 2004-12-18 Postopek za izdelavo mreže izolacijskega materiala in izolacijski material v obliki mreže

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004004954 2004-01-31
DE102004047193A DE102004047193A1 (de) 2004-01-31 2004-09-29 Verfahren zur Herstellung einer Dämmstoffbahn aus Mineralfasern sowie Dämmstoffbahn
PCT/EP2004/014449 WO2005072951A1 (fr) 2004-01-31 2004-12-18 Procede de fabrication d'une bande de materiau isolant a partir de fibres minerales et bande de materiau isolant ainsi obtenue

Publications (2)

Publication Number Publication Date
EP1708876A1 true EP1708876A1 (fr) 2006-10-11
EP1708876B1 EP1708876B1 (fr) 2012-06-13

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Country Link
US (1) US20070264465A1 (fr)
EP (1) EP1708876B1 (fr)
CA (1) CA2554902C (fr)
PL (1) PL1708876T3 (fr)
WO (1) WO2005072951A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
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DE102005044052A1 (de) * 2004-10-08 2006-05-04 Deutsche Rockwool Mineralwoll Gmbh & Co. Ohg Bauelement
DE102007023368A1 (de) * 2007-05-18 2008-11-27 Deutsche Rockwool Mineralwoll Gmbh + Co Ohg Verfahren zur Herstellung eines Dämmstoffelementes und Dämmstoffelement
CN105295366A (zh) * 2014-06-27 2016-02-03 上海优泰装饰材料有限公司 聚酰胺隔热条制备工艺
DE102015212417B4 (de) 2015-07-02 2020-02-20 Sgl Carbon Se Verwendung von dünnen Carbonfaservliesen hergestellt durch einen Horizontalspaltprozess
AT516749B1 (de) * 2015-07-02 2016-08-15 Destra Gmbh Verfahren und Vorrichtung zur Herstellung von Dämmstoffelementen aus Mineralfasern
US10450742B2 (en) 2016-01-11 2019-10-22 Owens Corning Intellectual Capital, Llc Unbonded loosefill insulation
CN109989259B (zh) * 2019-05-14 2024-08-30 安徽轩鸣新材料有限公司 竖丝岩棉生产线
RU2721593C1 (ru) * 2019-07-16 2020-05-20 Роквул Интернэшнл А/С Способ и устройство для горизонтального разъединения полотна из минеральной ваты
CN114987034B (zh) * 2022-06-16 2024-02-09 济南新元净化科技有限公司 一种净化岩棉板全自动生产线及生产方法

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CA1085282A (fr) * 1977-04-12 1980-09-09 Paul E. Metcalfe Methode de fabrication d'un isolant thermique et appareil utilise a cette fin
DE3701592A1 (de) * 1987-01-21 1988-08-04 Rockwool Mineralwolle Verfahren zur kontinuierlichen herstellung einer faserdaemmstoffbahn und vorrichtung zur durchfuehrung des verfahrens
DK165926B (da) * 1990-12-07 1993-02-08 Rockwool Int Fremgangsmaade til fremstilling af isoleringsplader sammensat af indbyrdes forbundne stavformede mineralfiberelementer
DK3593D0 (da) * 1993-01-14 1993-01-14 Rockwool Int A method for producing a mineral fiber-insulating web, a plant for producing a mineral fiber-insulating web, and a mineral fiber-insulated plate
DE4319340C1 (de) * 1993-06-11 1995-03-09 Rockwool Mineralwolle Verfahren zur Herstellung von Mineralfaser-Dämmstoffplatten und Vorrichtung zur Durchführung des Verfahrens
AU1574795A (en) * 1994-01-28 1995-08-15 Rockwool International A/S Insulating element and method and plant for producing and packaging
WO1997001006A1 (fr) * 1995-06-20 1997-01-09 Rockwool International A/S Procede et installation de production de couverture annulaire en fibre minerale isolante, et produit ainsi obtenu
CA2184836C (fr) * 1996-09-04 2000-03-14 Jung-Fu Chien Methode de production de bourre ondulee a densite variable, liee a la resine ou par procede thermique, et structure obtenue par ladite methode
AU7926398A (en) * 1997-06-13 1998-12-30 Rockwool Limited Fire stops for use in buildings

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Also Published As

Publication number Publication date
EP1708876B1 (fr) 2012-06-13
CA2554902C (fr) 2013-02-19
CA2554902A1 (fr) 2005-08-11
WO2005072951A1 (fr) 2005-08-11
PL1708876T3 (pl) 2012-12-31
US20070264465A1 (en) 2007-11-15

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