Classifications

• • 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
• • 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
• • 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
  • E04B2001/7695—Panels with adjustable width

Definitions

• the invention relates to an insulation board as described in the Preamble to claim 1 and processes to manufacture such an insulation board.
• the invention relates mainly to the field of roof insulation, in particular, the insulation of pitched roofs, and also the insulation of wooden-frame structures.
• the insulation of pitched roofs is an extremely important source of revenues within the field of insulation technology.
• the distances between the rafters of a roof or the beams of a wooden-frame structure between which the insulation board is installed vary from one construction site to the other and sometimes even on one and the same construction site.
• insulation boards of various graded widths are available on the market, so that insulation boards with the appropriate width can be used to suit the specific situation, i.e. the given distance between the rafters.
• the distances between rafters or beams on a construction site are never exactly identical but may even vary considerably. This presents a major problem, in particular where old buildings are concerned and a solution must be found to avoid heat-loss paths and to achieve satisfactory positioning of the insulation boards between the rafters or beams.
• DE-OS 32 03 622 provides for the milling of the peripheral sections of the insulation boards sold in predefined graded widths. Milling is effected with special milling mills acting upon certain areas of the insulation board. As a result of this milling process carried out by means of several milling mills or rollers, the fiber structure of the insulation board is destroyed in certain areas, thus reducing the strength of the insulation board there and rendering it compressible. An insulation board milled in this way can thus be compressed accordingly and inserted between the individual rafters of a rafter structure. As a result of the elastic recovery forces created through such compression, the insulation board can then be wedged between the rafters without any additional fastening measures.
• the compressibility of the insulation board allows one and the same insulation board to cover a given distance between the rafters or beams.
• the insulation board can thus be used for a certain range of varying rafter distances.
• the fiber structure is destroyed in certain areas. Due to particle loss, this results in a gradual loss of material which is detrimental to insulating efficiency.
• the disintegration of the material structure results in a restriction of elastic recovery forces which is difficult to define.
• production of the insulation board requires an additional manufacturing step because of the milling station, thus rendering the manufacturing of such an insulation board more expensive. As such insulation boards are mass- produced, this factor is of considerable importance.
• the object of this invention to design an insulation board to be installed between the rafters or beams of a rafter or wooden-frame structure which, with a predefined width, can be used for varying rafter or beam distances, easily installed, and lodged between the rafters or beams merely by its own self-wedging forces without any additional fastening elements.
• the insulation board should be simple to manufacture and ensure correct and uniform insulation across the entire board.
• an insulation board is made available which, at least in certain areas, consists of mineral-wool-fleece folds arranged fold by fold, thus creating a compressible area of the insulation board and making it possible to vary the width of the board in order to wedge it between the rafters or beams of a rafter or wooden-frame structure.
• the folds of the insulation board are created by meandrous folding of the mineral-wool fleece vertical to the insulation board's two main surfaces.
• the entire insulation board consists of one layer of mineral-wool fleece, in particular, rock wool, in curved folds.
• Such an insulation board can be compressed easily as required and, in particular, without damaging the fiber structure. This promotes insulating efficiency and, in particular, ensures reproducible conditions for all insulation boards, which is important in mass production to achieve constant quality.
• a gross weight of ⁇ 60 kg/m 3 has proved advantageous.
• the raw unit weight of these boards is preferably between 15 and 35 kg/m 3 .
• a raw unit weight of 30 kg/m 3 ⁇ 3 kg/m 3 has proved particularly suitable.
• Another advantageous parameter to determine the desired product characteristics is the G.S.M (grams per square meter) or weight by surface of the layer which emerges from the fall shaft. The G.S.M.
• the insulation board is between 2 and 3 kg/m 2 , preferably between 2.3 and 2.6 kg/m 2 .
• the portion of bonding agent preferably amounts to between 1 and 3%, more specifically around 2%, thus ensuring that the insulation board may be classified as "non-flammable".
• the folding of the insulation board is achieved without excessive compressive pressure, with the pressure required to compress the board being basically merely sufficient to result in the free folding of the fleece layer.
• the mineral-wool layer emerging from the fall shaft is transported by a pair of conveyor belts to a second pair of conveyor belts which is operated at a lower velocity than the first pair of conveyor belts. This results in a bulging of the fleece between the conveyor-belt pairs and thus in folding.
• the folding process or bulging of the mineral-wool fleece runs unhindered, at least initially, so that free folding, which is decisive for the desired compressibility of the final product, takes place, at least during the initial phase.
• free bulging is achieved simply by positioning the appropriate conveyor belts of the two pairs of conveyor belts at a certain distance to each other.
• Fig. 1 shows a preferred embodiment of the insulation board of the invention
• Fig. 2, 3 and 4 show a schematic presentation of the manufacturing process
• Fig. 5 shows a compressed insulation board as installed between the rafters of a roof or the beams of a wooden-frame structure.
• the insulation board illustrated in Figure 1 consists of a layer, 2, of a mineral-wool fleece.
• the two main surfaces of the insulation board are designated 3 and 4.
• the insulation board's lateral faces, 5 and 6 sit close to the structure's rafters or beams.
• the mineral-wool-fleece layer, 2, which in the preferred embodiment is made of rock wool, consists of meandrous folds with the folds being arranged directly and very closely to each other. The folds are designated 7.
• each fold extends across the entire thickness of the insulation board, i.e. the length of each fold, 7, corresponds to the thickness of the insulation board, 1. It is also possible, however, to split the insulation board, 1 , folded in such a way approximately at the middle and parallel to its main faces, so that two boards with a thickness of half the original fold length are obtained. It is thus possible, for example, to fold 200 mm thick boards and, by splitting them in two, to obtain two boards with a thickness of 100 mm each with the compressibility effect being maintained.
• the raw unit weight of insulation board 1 which according to Figure 1 consists only of one mineral-wool-fleece layer, 2, is ⁇ 60 kg/m 3 , preferably ⁇ 45 kg/m 3 .
• a particularly preferred range of the raw unit weight of insulation board 1 lies between 15 kg/m 3 and 35 kg/m 3 .
• a raw unit weight of 30 kg/m 3 ⁇ 3 kg/m 3 has proved
• the share of the bonding agent in the mineral-wool fleece ranges from 1 to 3% and, preferably, amounts to approx. 2%. This ensures that an insulation board with this composition is classified as "non-flammable", i.e. falls under class A1 as per DIN 4102.
• a mineral-wool fleece folded in such an easy, free way with almost no compressive pressure forms an insulation board that can be elastically compressed in direction R, i.e. parallel to the two main surfaces 3 and 4.
• width B of insulation board 1 which is decisive for bridging the distance between the rafters or beams of a roof or wooden-frame structure, is dimensioned in such a way that the insulation boards are sold in rated widths of between 55 and 100 cm with 5 cm graduations.
• An insulation board with a width B of 60 cm, for example, can be used for rafter distances of approximately 54 to 59 cm without any problems, i.e. may be used for rafter distances in this range while still ensuring perfect lodgement.
• the installation of such an insulation board is also very simple and can be carried out by an untrained person holding the insulation board 1 with both hands and compressing it slightly while he/she pushes it between the rafters or beams of the roof or wooden- frame structure.
• the parallel layers, 7, actually exert a wedge effect, i.e. it is sufficient to initially insert only a small part of the compressed insulation board.
• the outer layers, 7, assume a slightly angular position in the manner of a wedge and the inner layers become further compressed.
• the insulation board can then easily be pushed or tapped into its final position with both hands. This ensures firm and permanent positioning of the insulation board without any heat-loss paths between the rafters or beams.
• one or several identification lines can be applied to one or two of the insulation board's main surfaces, 3 and 4, or to the sides, 8 or 9, corresponding to the width of the board in order to illustrate the direction of compression to the on-site user, which is, per se, automatically predefined by the folds, which are also visible from the outside.
• identification via hot air applied through hot nozzles is especially suitable in this context.
• the mineral-wool fleece which is produced within a fall shaft and emerges therefrom, is guided between a first pair of conveyor belts consisting of two endless belts, 10 and 11 , positioned at a certain distance from each other.
• the fleece is then conveyed to a second pair of conveyor belts consisting of belts 12 and 13 which are also positioned at a certain distance from each other.
• the second pair of conveyor belts, 12 and 13 is operated at a lower velocity than the first pair of conveyor belts, 10 and 11 (see also Figures 2 and 3).
• the layer of mineral-wool fleece is thus transported more slowly in the area of the second conveyor unit, so that the fleece layer which arrives at a higher velocity via the first conveyor unit bulges and folds.
• the distance between the upper conveyor belts, 10 and 12 is larger than the distance between the lower conveyor belts, 11 and 13, so that the fleece layers can still bulge freely at the top, 14. This supports the free folding of the fleece layer with very little compressive pressure being required to achieve the compression performance required in the final product.
• the conveyor belts of the first conveying unit can also be uniformly operated faster than the second pair of conveyor belts, 12 and 13.
• Figure 4 shows a schematic presentation of the insulation board emerging from the tunnel furnace with line 15 only provided as a purely schematical illustration of the fleece layer in meandering folds.
• the separating cut is carried out, producing insulation board 1 , with a predefined rated width B, which is then ready for installation.
• Figure 5 shows insulation board 1 without compression (broken line) and the compressed insulation board ready for installation between the rafters or beams of a structure (unbroken line).

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• Physics & Mathematics (AREA)
• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Acoustics & Sound (AREA)
• Electromagnetism (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Building Environments (AREA)
• Laminated Bodies (AREA)
• Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Applications Claiming Priority (3)

Publications (2)

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Family Applications (1)

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• 1998
  • 1998-09-28 DE DE19844425A patent/DE19844425A1/de not_active Withdrawn
• 1999
  • 1999-09-21 CZ CZ20011075A patent/CZ20011075A3/cs unknown
  • 1999-09-21 AU AU61933/99A patent/AU6193399A/en not_active Abandoned
  • 1999-09-21 DE DE69940120T patent/DE69940120D1/de not_active Expired - Fee Related
  • 1999-09-21 PL PL99346902A patent/PL346902A1/xx not_active Application Discontinuation
  • 1999-09-21 EP EP99948803A patent/EP1117880B1/de not_active Expired - Lifetime
  • 1999-09-21 WO PCT/EP1999/006964 patent/WO2000019030A1/de active Application Filing
  • 1999-09-21 AT AT99948803T patent/ATE417970T1/de not_active IP Right Cessation

Non-Patent Citations (1)

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