EP0277500B1 - Verfahren zur kontinuierlichen Herstellung einer Faserdämmstoffbahn und Vorrichtung zur Durchführung des Verfahrens - Google Patents

Verfahren zur kontinuierlichen Herstellung einer Faserdämmstoffbahn und Vorrichtung zur Durchführung des Verfahrens Download PDF

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Publication number
EP0277500B1
EP0277500B1 EP88100373A EP88100373A EP0277500B1 EP 0277500 B1 EP0277500 B1 EP 0277500B1 EP 88100373 A EP88100373 A EP 88100373A EP 88100373 A EP88100373 A EP 88100373A EP 0277500 B1 EP0277500 B1 EP 0277500B1
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EP
European Patent Office
Prior art keywords
partial
compressed
web
partial web
collecting chamber
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.)
Revoked
Application number
EP88100373A
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German (de)
English (en)
French (fr)
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EP0277500A3 (en
EP0277500A2 (de
Inventor
Gerd Rüdiger Dr.Ing. Klose
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Deutsche Rockwool Mineralwoll GmbH and Co OHG
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Deutsche Rockwool Mineralwoll GmbH and Co OHG
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Application filed by Deutsche Rockwool Mineralwoll GmbH and Co OHG filed Critical Deutsche Rockwool Mineralwoll GmbH and Co OHG
Publication of EP0277500A2 publication Critical patent/EP0277500A2/de
Publication of EP0277500A3 publication Critical patent/EP0277500A3/de
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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
    • 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
    • D04H1/42—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
    • 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
    • D04H1/74—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)
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1015—Folding
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1016—Transverse corrugating
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1007—Running or continuous length work
    • Y10T156/1016—Transverse corrugating
    • Y10T156/102—Transverse corrugating with deformation or cutting of corrugated lamina
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1051—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina by folding
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1059—Splitting sheet lamina in plane intermediate of faces
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062—Prior to assembly
    • Y10T156/1067—Continuous longitudinal slitting
    • Y10T156/1069—Bonding face to face of laminae cut from single sheet
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062—Prior to assembly
    • Y10T156/1075—Prior to assembly of plural laminae from single stock and assembling to each other or to additional lamina
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/13—Severing followed by associating with part from same source

Definitions

  • the invention relates to a process for the continuous production of a mineral fiber insulation web for thermal and acoustic insulation of buildings or industrial products, the loose mineral fibers being provided with a binder and being collected in a collecting chamber to form a primary nonwoven, the primary nonwoven then being continuously conveyed and pre-compressed and in the area between the collecting chamber and a hardening furnace is split into two or more partial webs by one or more horizontal cuts, at least one partial web also being lifted off and strongly compressed by aligning the fibers by pressure perpendicular to the large web surface areas, and the compressed partial web of the or fed to the other partial webs and cured together with them in the hardening furnace.
  • Fiber insulation webs are usually produced in practice in such a way that a primary fleece coming from a collecting chamber and provided with binding agents and impregnating agents in the collecting chamber is subsequently compacted overall and fed to a hardening furnace for curing the binding agents and impregnating agents. Seen across their cross-section, these fiber insulation webs are largely homogeneous, ie they have the same spatial density and strength properties everywhere, which, however, depend on the degree of compaction, fiber flow, binder content and the like. Like. Dependent and can be different. This homogeneity is particularly evident in the case of insulation materials made from artificial, glassy solidified mineral fibers, and the surfaces of the fiber insulation webs have no properties that fundamentally differ from the internal structure.
  • the surface strength and / or the flexibility of the surface layers To improve, it is known to laminate the previously explained homogeneous fiber insulation webs with other substances, for. B. with higher-density fiber insulation, glass nonwovens, glass and textile fabrics, metal fabrics, foils or the like. Or to change the fiber insulation webs by mechanical action.
  • the basic prerequisite is that the homogeneous fiber insulation web is first passed through a hardening furnace, where the binder and impregnating agent contained is hardened. Only then are the surface layers applied. Apart from the separate manufacturing processes for the surface layers, this subsequent application requires a relatively large manufacturing effort, especially if the fiber insulation web hardened in the hardening furnace is first divided into layers or sections and then the coating has to be carried out.
  • a Damascus steel can be made with different hardness, which is characterized by high strength and elasticity.
  • a method specified at the beginning is also known from CA-A-1057183. This is followed by a division of the primary nonwoven into two or more partial webs, specifically the cuts are provided parallel to the large surfaces of the primary nonwoven. At least one partial web is compressed in order to obtain a higher density therein. Then when the partial webs are then guided together and cured in a common curing oven, an end product is created that consists of several layers with different densities consists. In terms of material, the end product consists exclusively of mineral fibers and a binder, which is contained in an extremely finely divided form, namely in very small droplets between the mineral fibers.
  • This end product made of differently compacted layers has different mechanical properties than a fiber insulation web, which is largely homogeneous across its cross-section.
  • the compressed layer has greater compressive strength. Since the compressed and uncompressed partial webs only contain the aforementioned small, evenly distributed amounts of binder, which are still uncured on the way to the curing oven, there is a risk that the compacted layer or partial web will expand again, but above all the small amount of binder is usually not sufficient to keep the differently compressed partial webs in the end product together. It can therefore happen that during the subsequent processing of the end product they separate from one another or over a large area and even form undulating surfaces.
  • the invention is based on the object of creating a method by means of which a mineral fiber insulating material web can be produced with little production effort and which has specific mechanical properties depending on the area of application.
  • the loose mineral fibers in the collecting chamber are additionally provided with an impregnating agent, that in the area between the collecting chamber and the hardening furnace, the partial web lifted off by means of additional reinforcing means, such as optionally a viscous binder in order to prevent springing back into the partial web pressed in continuously or a moisture-impermeable blocking agent is applied to the inner surface of the compressed partial web, or air-permeable and thermally stable reinforcing agents, in particular thin nonwovens, fabrics or braids, are applied to the outer and / or inner surface of the compressed partial web or to the outer and / or inner surface of the compressed partial web with inorganic binders, in particular water glass and its derivatives or silicic acid esters of colloidal silica, metal or ceramic fibers and particles are sprayed on, so reinforced that the partial webs have different strength properties, and that the rejoined partial webs under pressure on the large surfaces through the hardening furnace.
  • additional reinforcing means such as optionally a viscous binder
  • the main advantage is that a targeted treatment of the primary nonwoven can be carried out within the normal production process, so that a finished fiber insulation web is already available at the exit from the curing oven, which is not homogeneous, but specifically special surface properties and / or special properties within the Has fiber insulation web.
  • Impregnating agents are provided that the horizontal primary fleece is split into two or more partial webs by one or more vertical cuts, that at least one partial web after the different compression of the partial webs by means of a additional reinforcing agents, such as a viscous binder being pressed continuously into the partial web in order to prevent springback, or a moisture-impermeable blocking agent is applied to the inner surface of the compressed partial web or air-permeable and thermally stable reinforcing agents, in particular thin ones, on the outer and / or inner surface of the compressed partial web
  • Nonwovens, fabrics or braids are applied or sprayed onto the outer and / or inner surface of the compressed partial web with inorganic binders, in particular water glass and its derivatives or silicic acid esters of colloidal silicic acid, provided with metal or ceramic fibers and particles, that the partial webs have
  • the subclaims 3 to 16 relate to advantageous refinements of the method according to the invention.
  • each lifted, compressed partial web is treated by means of treatment devices, such as a microwave generator, hot air stream or surface emitters, so that the additional reinforcing agents are cured at least in some areas.
  • treatment devices such as a microwave generator, hot air stream or surface emitters
  • the compacted surface has increased mechanical strength, which enables insulation holders to be held securely on walls, glued roof sealing sheets and, above all, with partial bonding.
  • the fiber insulation materials treated in this way release fewer components, ie there is practically no abrasion.
  • the fiber insulation web as the end product is therefore easy to use and resistant to wind attacks, especially if the fiber insulation webs are attached to clad the outer walls of buildings or the like.
  • the outer surface of the respectively compressed partial web be treated with additional paints and / or impregnating agents until it can be sanded. In this way, natural stone-like surfaces can be produced.
  • the outer surface of the respectively compressed partial web is treated or coated with materials which are highly thermally resistant up to about 1000 ° C., in particular materials which fail in the known sol-gel process.
  • the fiber insulation webs produced according to the invention can be used in thermally highly stressed application areas.
  • moisture-impermeable barrier agent By applying a moisture-impermeable barrier agent, the penetration of moisture, e.g. B. plaster moisture can be prevented in the less densely compressed part of the fiber insulation web.
  • an air-permeable and thermally stable reinforcing agent advantageously in the form of thin non-wovens, woven fabrics or braids, can be applied to the outer and / or inner surface of the respectively compressed partial web without major technical effort. This primarily serves to increase the tear resistance of the respective surface.
  • inorganic binders in particular water glass and its derivatives, or on the outer and / or inner surface of the compressed partial web Silica esters of colloidal silica, provided metal or ceramic fibers and particles can be sprayed on. This also results in a substantial hardening and mechanical resilience of the surfaces.
  • reflective substances in particular metal powder, metal mesh and mesh or ceramic materials such as mica, be introduced into the partial web to be compressed in such a way that these substances are embedded after compression.
  • This structure especially due to the surfaces that strongly reflect heat rays, significantly reduces the thermal conductivity of the fiber insulation material, especially at high temperatures.
  • a plurality of laminar structures or different layers extending through the cross section can be created.
  • the reflective substances can then be introduced in one or more layers. It is particularly advantageous that these reflective layers are introduced at distances of less than 20 mm from the outer surfaces of the fiber insulation web.
  • foam-forming substances be introduced into the partial web to be compressed in order to increase the fire resistance duration. This is particularly recommended if fiber insulation is used in components that are exposed to high temperatures, e.g. B. may be exposed to a fire.
  • Another teaching according to the invention is to form the primary nonwoven by unfolding a thin continuous nonwoven layer and to apply reinforcing agents to the nonwoven layers before unfolding.
  • a certain structural effect can be achieved in the primary nonwoven, especially a high compressive strength perpendicular to the surface of the primary nonwoven.
  • an additional special treatment of at least one partial web and finally the common curing in the hardening furnace can then be carried out again.
  • the basic structural effect of the unfolding can be supplemented and improved, namely by using different feed speeds between parts of the transport system on the way in front of and in the hardening furnace.
  • reinforcing agents which are applied before the nonwoven layer is unfolded, can be with fibers or metal particles reinforced inorganic or organic binders can be selected.
  • nonwovens, glass braids or fabrics or metal braids or fabrics can also be selected as reinforcing agents. In any case, the internal cohesion of the fiber insulation material is improved considerably.
  • Loose fibers and a binder can alternatively be selected as reinforcing agents for the nonwoven layer before it is unfolded, and are simultaneously sprayed onto the thin nonwoven layer. It is advisable to use thermally stable fibers. While the area of application, particularly of stone fiber insulation materials, has hitherto been below 750 ° C., the measures according to the invention can significantly increase the area of application to approximately 1000 ° C.
  • the result is fiber insulation materials with completely new properties, especially with high shear and tear resistance, so that these z. B. for the direct approach as facade cladding on buildings and the like.
  • the springing back of fiber-containing materials with a low binding agent content can be reduced.
  • the thin nonwoven layer can be unfolded in this way be that the folds are gradually horizontally or obliquely inclined at an angle less than 90 ° to the large areas of the primary nonwoven. This allows the strength properties desired for the respective application to be adjusted.
  • the invention further relates to a device for carrying out the above-described method, starting from CA-A-1057183, with a collecting chamber, the loose mineral fibers being collected in the collecting chamber with simultaneous spraying on of binders into a primary nonwoven and conveyed continuously by means of a conveyor is further arranged in the area between the collecting chamber and a hardening furnace separating devices for splitting the primary nonwoven into two or more partial webs and in connection with the separating devices guides for lifting off at least one partial web are provided, with downstream pressure rollers or belts for compressing each partial web being lifted off and guides are arranged for returning each lifted partial web to the rest of the primary nonwoven and for passing it through the hardening furnace together.
  • the device according to the invention is characterized in that a device for the additional spraying of impregnating agents or lubricants is provided in the collecting chamber, and in the area between the collecting chamber and the hardening furnace there are treatment devices for introducing or applying additional reinforcing agents in or on at least one partial web are.
  • Figure 1 illustrates purely schematically an embodiment of the device according to the invention.
  • the fibers produced to form a fiber insulation web in particular mineral fibers, are collected while simultaneously spraying binders and impregnating agents into a continuous primary fleece moved in the direction of arrow 3.
  • the primary fleece is then compressed in a known manner between rollers 4 or belts on the top and bottom of the primary fleece and then continuously conveyed to a hardening furnace 5 for hardening the binding and impregnating agents.
  • the device according to the invention has, in the area between the collecting chamber 1 and the hardening furnace 5, separation devices 6 for splitting the primary fleece 2 into two or more partial webs.
  • FIG. 1 In the exemplary embodiment according to FIG.
  • the division into two partial webs 7 and 8 takes place. While the lower partial web 7 of the primary nonwoven is conveyed further in the pre-compressed state to the hardening furnace 5 without further treatment, the other partial web 8 is lifted off.
  • guides such as sliding surfaces, rollers or belts provided.
  • the partial web 8 in FIG. 7 is drawn at a steep angle to the partial web 7. In practice, the mutual course of the two partial webs can be made much flatter.
  • the partial web 8 is strongly compressed by pressure rollers 9 and 10 or suitable pressure belts. Following the pressure rollers or belts, such treatment devices are connected downstream that the partial web 8 in compressed form is fed back to the rest of the primary fleece 7 and is passed together with it through the hardening furnace 5. Exemplary embodiments of the treatment devices are explained in more detail below.
  • the separating devices are advantageously designed as band saws, which are optionally arranged for horizontal or vertical cuts.
  • a band saw is available for a horizontal cut.
  • a separating device 11 with a drive 12 is provided for a vertical cut.
  • a gluing roller 13 is advantageously arranged, which serves to apply a glue, but in particular to press in a viscous binder.
  • the gluing roller is located between two pairs of pressure rollers 9, 10.
  • a further pressure roller 14 presses the partial web 8 onto the gluing roller.
  • a further treatment device 15 is advantageously provided for the compressed partial web 8.
  • a microwave generator or a surface radiator or a device for generating a hot air stream can optionally be provided on one side or expediently on both sides.
  • the binders contained and / or additionally applied in the lifted partial web 8 are at least partially cured. In this way, springing up of the compressed partial web is prevented, so that additional pressing devices on the way to the curing oven 5 are unnecessary, and secondly, the partial web can be given mechanical and thermal properties which are desired for the surface layer of the end product.
  • the partial web 8 is to be further consolidated and reinforced, it is expedient to arrange further spraying devices 16 on the outside or, if appropriate, also on both sides of the lifted partial web, by means of which the reinforcing means recorded above can be applied before the partial web is combined with the partial web 7 of the rest Primary fleece and the common final curing takes place in the curing oven 5.
  • an additional feed device 17 can advantageously be arranged in the area between the partial web 7 of the primary fleece and the lifted partial web 8. This feed device 17 is shown in simplified form in FIG. 1 as a roll or winding roller.
  • the feed device 17 is used to feed air-permeable and thermally stable reinforcing agents, in particular thin polyester nonwovens, fabrics or braids. Glass fleeces, fiberglass mesh and metal mesh or meshes may also be mentioned.
  • FIG. 1 shows only a raised partial web 8 and a remaining partial web 7 of the primary fleece. Instead, however, a further partial web can also be split off from the underside of the primary nonwoven, lifted off and treated in accordance with partial web 8.
  • the primary nonwoven can also be split into a correspondingly larger number of partial webs, which then alternate, as described above for partial web 8, treated or how partial web 7 is not treated cured binders are left.
  • Figures 2 and 3 show another embodiment of a device according to the invention, which is recommended if the split webs of the primary nonwoven should initially have approximately the same thickness. For manufacturing reasons, it is then easier to provide a separating device 11 with a drive 12 which carries out a vertical cut, that is to say a cut perpendicular to the primary fleece 2. If a multiple layering is desired, several cuts are carried out side by side. In each case one partial web 19 is then continued like the partial web 7 (FIG. 1) with uncured binder up to the curing oven 5, while the other partial web 20 is compressed and further treated in accordance with the partial web 8.
  • the pressing device which at the same time aligns the partial web 20, is provided with the same reference numerals as in FIG. 1. Otherwise, the explanations for FIG. 1 also apply to the exemplary embodiment according to FIGS. 2 and 3. It is common and important in all cases that the compression and treatment processes take place continuously and in the distance between the collecting chamber and the hardening furnace.
  • FIG. 4 shows a side view of a section of a finished web as it leaves the hardening furnace, namely with a relatively low-density core 21, which corresponds to the partial web 7 (FIG. 1), and with a highly compressed and treated surface layer 22 with a predominantly laminar one Structure of the fibers, ie the fibers are oriented essentially horizontally or parallel to the large areas of the web.
  • FIG. 5 shows a side view corresponding to FIG. 4, but with alternating, slightly compressed layers 23, 24 and 25 and highly compressed and treated thin layers 26, 27, 28 and 29, layers 26 and 29 forming the two surface layers.
  • FIG. 6 shows a further exemplary embodiment of a finished product with two highly compressed and treated outer surface layers 30 and 31 and a less compressed middle layer 32, this layer 32 having been split into partial webs in the previous manufacturing process.
  • Reinforcement means 33 such as metal powder, metal mesh and other reinforcement means explained above, are embedded between these partial webs.
  • FIG. 7 shows an exemplary embodiment which essentially corresponds to that of FIG. 4, but here, for example, a wire mesh 34 is embedded in the highly compressed surface layer 22.
  • FIG. 8 shows an embodiment with a less compressed layer 35, which has a weight of 30 kg / m 3 , for example.
  • the highly compressed surface layer 36 has a weight of, for example, 120 kg / m 3 , which is also laminated with a film 37 or a thin sheet.
  • Such a fiber insulation web is particularly suitable for the insulation of pipelines 38 according to FIG. 9.
  • FIG. 10 shows another component device in the diagram, which can also be used in the context of the overall device according to the invention explained above.
  • the uncured primary fleece coming from a collecting chamber is fed vertically from above with a smaller web thickness to a pressing device 40, which essentially corresponds to the pressing device according to FIG. 1 and which at the same time serves to align the primary fleece 39.
  • the primary nonwoven web 39 comes in the compressed state to a pendulum device 41, which advantageously consists of two circulating endless belts and oscillates back and forth in the direction of arrow 42, so that the primary fleece is deposited in a meandering manner on a conveying device to form a relatively thick fleece layer 43 which is then conveyed continuously in the direction of arrow 44 .
  • the conveying speed is selected such that the meandering fleece layers 45, which are shown in simplified form, lie close together.
  • the primary fleece 39 can also be covered with air-permeable and temperature-resistant reinforcing material 46, which is supplied by a winding roll 47.
  • a spray device 48 or a feed device for reinforcing agents can be arranged at a suitable location.
  • FIG. 1 specifically with regard to the treatment device 15, the spray device 16 and the feed device 17, apply here analogously.
  • a nonwoven layer 43 can be formed which has a very high compressive strength, especially in the direction perpendicular to the two large surfaces of the fiber insulation web.
  • the fibers within the nonwoven layer 43 run essentially perpendicular to the large surfaces.
  • the placement and the conveying speed can also be chosen so that the fleece layers 45 and thus most of the fibers are inclined or oblique to the large surfaces.
  • the fleece layer 43 is further treated in this embodiment, similar to the primary fleece 2 ( Figure 1); ie splitting can again take place here by separating devices 49, so that again one or more partial webs are formed which can be treated further as described for FIG. 1 or FIGS. 2 and 3.
  • FIG. 10 only two partial webs 50 and 51 are shown, but multiple splitting and treatment can also be carried out here.
  • the partial webs are treated essentially in relation to the large horizontal surfaces, e.g. compressed etc. or the partial webs were given a fold or a meandering nonwoven layer.
  • at least one of the partial webs can be compressed or compressed in the conveying direction and / or transverse direction. This can e.g. in that the conveyor belts for the partial webs are driven at different conveying speeds, so that at least one of the partial webs is compressed or compressed in the conveying direction in relation to other partial webs.
  • lateral pressing members can also be provided for at least one partial web, so that the partial web in question can be compressed or compressed in the transverse direction to the conveying direction. This upsetting or compressing can optionally be carried out at the most varied of locations between the splitting point on the one hand and the hardening furnace on the other.
  • the fibers do not run parallel to the large surfaces within the partial web in question, but rather more or less obliquely thereto or with a directional component which is oriented perpendicular to the large surfaces.
  • This orientation of the fibers results in greater strength properties, in particular greater compressive strength perpendicular to the surfaces.

Landscapes

  • Textile Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nonwoven Fabrics (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Inorganic Insulating Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Insulating Bodies (AREA)
  • Laminated Bodies (AREA)
  • Artificial Filaments (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Packages (AREA)
EP88100373A 1987-01-21 1988-01-13 Verfahren zur kontinuierlichen Herstellung einer Faserdämmstoffbahn und Vorrichtung zur Durchführung des Verfahrens Revoked EP0277500B1 (de)

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Application Number Priority Date Filing Date Title
DE19873701592 DE3701592A1 (de) 1987-01-21 1987-01-21 Verfahren zur kontinuierlichen herstellung einer faserdaemmstoffbahn und vorrichtung zur durchfuehrung des verfahrens
DE3701592 1987-01-21

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EP0277500A2 EP0277500A2 (de) 1988-08-10
EP0277500A3 EP0277500A3 (en) 1990-01-24
EP0277500B1 true EP0277500B1 (de) 1994-06-15

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EP88100373A Revoked EP0277500B1 (de) 1987-01-21 1988-01-13 Verfahren zur kontinuierlichen Herstellung einer Faserdämmstoffbahn und Vorrichtung zur Durchführung des Verfahrens

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US (2) US4917750A (enrdf_load_stackoverflow)
EP (1) EP0277500B1 (enrdf_load_stackoverflow)
AT (1) ATE107370T1 (enrdf_load_stackoverflow)
DE (2) DE3701592A1 (enrdf_load_stackoverflow)
DK (1) DK22088A (enrdf_load_stackoverflow)
FI (1) FI89282B (enrdf_load_stackoverflow)
NO (1) NO168489C (enrdf_load_stackoverflow)

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Also Published As

Publication number Publication date
FI880240A7 (fi) 1988-07-22
DE3850130D1 (de) 1994-07-21
DK22088D0 (da) 1988-01-19
US4917750A (en) 1990-04-17
DK22088A (da) 1988-07-22
NO880232D0 (no) 1988-01-20
NO168489C (no) 1992-03-04
US4950355A (en) 1990-08-21
FI89282B (fi) 1993-05-31
FI880240A0 (fi) 1988-01-20
ATE107370T1 (de) 1994-07-15
DE3701592A1 (de) 1988-08-04
DE3701592C2 (enrdf_load_stackoverflow) 1989-01-19
NO880232L (no) 1988-07-22
NO168489B (no) 1991-11-18
EP0277500A3 (en) 1990-01-24
EP0277500A2 (de) 1988-08-10

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