Classifications

• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
  • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
  • D04H1/4209—Inorganic fibres
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • 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
  • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
  • D04H1/54—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 welding together the fibres, e.g. by partially melting or dissolving
  • D04H1/559—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 welding together the fibres, e.g. by partially melting or dissolving the fibres being within layered webs
• • 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
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
  • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
  • D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
  • D04H5/02—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling
• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
  • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
  • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
  • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
  • E04C2/16—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like

Definitions

• the present invention relates to a method for the production of a mineral wool product from a mineral wool web consisting of mineral fibres having been collected on a perforated conveyor belt in an airborne state, to which fibres a curable binder has been added during or before the collecting, said binder being cured under compression of the mineral wool web to a desired density between two compression bands during the curing.
• Such insulations may either be manufacture on the building site by laying out several layers differing from one another, or during the production of the mineral wool, varying webs of mineral wool being after the curing of the binder cut off or glued together, possibly by cuttin up one web into slices which are then put together into a pressure-resisting sheet, the desired wearing capacity bein attained with respect both to the diversified load and to the. more .concentrated load.
• German patent no. 832,201 it is known on part of a mineral wool web to add additional mineral wool before the assembled web is compressed and cured.
• those parts of the mineral wool web coated with additional mineral wool will get a higher speci ⁇ fic weight than the remainder of the web.
• the areas with a higher specific weight will extend throughout the thickness of the whole web, while no improvement is obtained in the areas, where no additional mineral wool has been added.
• a general increase of the wearing capacity with, respect to concentrated loads cannot be attained without covering the whole web with an additional layer of mineral wool.
• the object of the present invention is to provide a method according to which mineral wool slabs having in ⁇ creased resistance to concentrated loads can be made.
• the object is to provide a method, according to which mineral wool slabs with a specific weight varying in the direction perpendicular to the length and width dimensions can be continuously manufactured.
• the invention is based on the observation that the uncured mineral wool, to which a binder has been added, may be compressed in advance for the attainment of a permanent compression being retained also during the final curing, in such a way that the pre-compressed parts of the mineral wool web get a greater specific weight than the remaining parts of the mineral wool web. It is, therefore, possible wi the method according to the invention to produce mineral wool slabs having a comparatively light lower surface and a rigid, comparatively hard upper surface/which is able to resist concentrated loads and to distribute these loads ove a greater part of the underlying mineral wool, which conse- quently does not have to be of an essentially greater strengt than is necessary for carrying the evenly distributed load.
• the specific weight varying through the height of the minera wool slab makes it possible to produce slabs having the same average specific weight, said slabs being more resistant to the most frequent influences, and also slabs, which with a smaller average specific weight y retain the same fcesistanc as before.
• the insulating capacity is not influenced by the increase of strength or by the reduced consumption of mate ⁇ rial, depending on what it aimed at.
• mineral wool is normally and in connection with the present invention understood synthetically produced mineral wool.
• Synthetically produced mineral wool consists of fibres which as to chemical composition differ from the natural fibres, asbestos.
• synthetically produced mineral wool may also vary as to chemical composition and may in general terms be called glass wool, rock wool and slag wool.
• the plants where the mineral wool is made will differ in accordance with the ype of fibres or the type of the finished produc .
• the method according to the invention may vary in ac ⁇ cordance with the plant, on which the mineral wool web is produced.
• These embodiments are defined in claims 2 and 4. Normally, it is necessary for the compression before the curing to take place at such a pressure that the com ⁇ pressed part of the mineral wool web is reduced in thickness to approx. one tenth of its original thickness. Immediately after the compression, the mineral wool will tend to go back to a.somewhat greater thickness, but after the curing the compressed mineral wool will become more rigid and get a greater specific weight than the not compressed or to a smaller degree compressed mineral wool.
• fig. 1 shows an example of a plant for the manufacture of for instance glass wool, said plant being intended for the carrying out of the invention
• figs. 2 and 3 shows an intermediary product made from for instance stone or slag wool, the fibres being at first deposited in the form of a primary web, then by means of a pendulum boom laid out with overlappings to make up the whole thickness of the uncured mineral wool web
• fig. 4 shows an example of a plant, in which a part of the fibres are collected on an inserted collecting- band for the formation of a partial web
• fig. 5 shows a plant for carrying out the method ac ⁇ cording to the invention, by means of which the mineral wool web is split.
• a channel 1 for transporting molten raw ma ⁇ terials to a series of spinning means 2 is shown.
• the spinnin means 2 draw the molten raw material out into fine fibres. and to the fibre flow 3 thus produced an atomized binder is added in- conventional way (not shown) .
• the fibre flow 3 is deposited on. a continuous perforated conveyor belt 8, on which the thickness of the layers of the fibre belt 7 increases in time with a definite part of the conveyor belt passing the spinning or fibremaking means 2.
• a pair of rollers 4 has been inserted, said rollers compressing the flow of fibres 3 into a pre-compressed fibrous web 5.
• the finished fibrous web 7 is thereby brought to consist of pre-compress fibre web 5 alternating with light and airy fibre webs 6.
• the rollers which may als be in the shape of pressing bands or plates, may be positio at whichever of the fibremaking means and may thus.vary from every second one of them as to positioning.
• An embodiment o the arrangement may be that the rollers 4 are placed at for instance the three last fibremaking means in downstream direction.
• a comparatively soft, airy part of the lower part of the mineral wool web will be attained, the upper part thereof forming an integral part of the entire pr duct and having a greater specific weight and a more solid texture.
• a primary web 21 is seen, said web having been collected from one or more fibremaking means on a perforated conveyor belt.
• the primary web 21 is compressed or rolled on a part 22 of its width and then, by means of a conventional pendulum .means, which may for instance be of the type known from GB patent no. 1 035 688, foded into a web having a considerable thickness (t_) .
• the part 22 of the primary web, which is rolled may vary for example 1/10 to 1/2 of the full width of the primary web, depending on the desired thickness (t 2 ) of the mineral wool web with a greate density.
• the portion (t,,) namely forms that part of the finished product, which has greater density and thus greater rigidity than the underlying fibrous material.
• the compression may as mentioned before be carried out by rolling or compression of partial portions of the uncured mineral wool web.
• This makes it possible to carry out the rolling with for instance patterned rollers or with rollers having particularly raised portions or linear portions.
• profiled rollers products having a lattice-like structure, this structure consisting of mineral wool with a greater spe ⁇ cific weight and rigidity than the remaining part of the pro ⁇ duct, are obtained.
• a further method is described with reference to fig. 5, according to which a mineral wool web 51, which has been desposited through a direct laying out of fibres in full thickness or by pen- dulum laying of a primary web, is split into two or more layers 54,55.
• the mineral wool web 51 is taken through some rollers 52 for the formation of a more uniform structure, thickness and specific weight of the web before the splitting.
• the splitting may be carried out in a conventional way by means of band saws 53 or the like.
• One or more of the layers, made by the splitting, is brought to a rolling or pressing between several succeding pair of rollers 56, upon which the the layers are then joined again to form an integral web 57.
• the integral web Before being brought into the curing furnace 59, the integral web may be rolled between additional pair of rollers 58.
• the integrated, finished mineral wool product may be composed by parts, the looser ones of which having a densi-
• the solid, pre-compressed part may attain a density
• a mineral wool slab with an average specific weight o 3 83 kg/m was produced by splitting a mineral wool web into two partial webs, one of which, being compressed for the attainment of a permanent compression, making out 30% of the hight of the total mineral wool web. During the compressing the partial web was compressed to approx. 1/10 of its original thickness and then the pressure was relieved
• the two partial webs were then joined and compressed to attain the desired finished thickness and simultaneously cured by hot air being blown through it.
• the mineral wool slab attained had a specific weight varying through the thickness of the slab, the specific weight being at one surface 138 kg/m 3, while it was 73 kg/m3 at the other surfac
• the point-pressure strength was approx. 60% bigger with a hard surface than with a slab having essentially a uniform

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Architecture (AREA)
• Chemical & Material Sciences (AREA)
• Inorganic Chemistry (AREA)
• Life Sciences & Earth Sciences (AREA)
• Wood Science & Technology (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Mechanical Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Nonwoven Fabrics (AREA)

Applications Claiming Priority (2)

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• 1986
  • 1986-06-30 DK DK309886A patent/DK155163B/da not_active Application Discontinuation
• 1987
  • 1987-06-30 EP EP87904510A patent/EP0271567A1/de not_active Withdrawn
  • 1987-06-30 WO PCT/DK1987/000082 patent/WO1988000265A1/en not_active Application Discontinuation
• 1988
  • 1988-02-25 FI FI880890A patent/FI880890A/fi not_active IP Right Cessation

Non-Patent Citations (1)

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