EP1117880B1 - Mineral-wool insulation board for insulation between roof-rafters and process for its manufacturing - Google Patents

Mineral-wool insulation board for insulation between roof-rafters and process for its manufacturing Download PDF

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Publication number
EP1117880B1
EP1117880B1 EP99948803A EP99948803A EP1117880B1 EP 1117880 B1 EP1117880 B1 EP 1117880B1 EP 99948803 A EP99948803 A EP 99948803A EP 99948803 A EP99948803 A EP 99948803A EP 1117880 B1 EP1117880 B1 EP 1117880B1
Authority
EP
European Patent Office
Prior art keywords
insulation board
mineral
wool
insulation
fleece
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99948803A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1117880A1 (en
Inventor
Lothar Bihy
Dieter Neukirch
Horst Keller
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.)
Saint Gobain Isover SA France
Original Assignee
Saint Gobain Isover SA France
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint Gobain Isover SA France filed Critical Saint Gobain Isover SA France
Publication of EP1117880A1 publication Critical patent/EP1117880A1/en
Application granted granted Critical
Publication of EP1117880B1 publication Critical patent/EP1117880B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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.
  • DE 36 12 857 C3 is relating to a mineral fibre strip as applied in a roll form where portions are cut off to form mineral fibre boards to be arranged between roof rafters.
  • the mineral fibre boards are held between the roof rafters by clamping. This is achieved in that the binder content is increased to an amount of about 6 and 7 % by weight.
  • the stiffness is increased and thus a better retaining effect is achieved when an insulation panel is pushed in between rafter of a roof.
  • Mineral fibre-insulated plates according to WO 94/16162 comprise a central body consisting of mineral fibres as well as at least a surface layer adjoined in facial contact with the central body.
  • the central body is consisting of a mineral fibre web containing folds which are arranged fold by fold so that the orientation of the mineral fibres is vertically to the main surfaces of the central body.
  • the surface layer is compacted and adjoined with the central body by curing in the curing station. This structure is provided for getting a board with improved mechanical properties and mechanical performance so that the mineral boards are suitable to be used as roofing plates.
  • 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.
  • 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.
  • 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.
  • 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.
  • Such 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.
  • 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.
  • 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 especially feasible for the intended application, i.e. insulation between rafters of a roof or wooden-frame structures.
  • 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.
  • 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. Compression of the board results in the development of elastic recovery forces, so that the insulation board, after having been installed between the rafters or beams of a roof or wooden-frame structure, is securely wedged at its place of installation. Additional auxiliary measures such as fastening the board to a foil strip with the help of a tacker or fastening it to transverse wooden strips nailed to the rafters to hold the insulation board as such are unnecessary. In addition, depending on the individual insulation-board design and dimensioning, distances between rafters varying within a certain range can be bridged with an insulating board of a certain rated width.
  • 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.
  • the second pair of conveyor belts, 12 and 13 transports the insulation board to a tunnel furnace where the bonding agent is thermally cured and the folding status thus retained.
  • 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)
EP99948803A 1998-09-28 1999-09-21 Mineral-wool insulation board for insulation between roof-rafters and process for its manufacturing Expired - Lifetime EP1117880B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19844425 1998-09-28
DE19844425A DE19844425A1 (de) 1998-09-28 1998-09-28 Dämmstoffplatte aus Mineralwolle zum Dämmen zwischen Dachsparren und Holzständerkonstruktionen sowie Verfahren zur Herstellung einer solchen Dämmstoffplatte
PCT/EP1999/006964 WO2000019030A1 (en) 1998-09-28 1999-09-21 Mineral-wool insulation board for insulation between roof-rafters, wooden-frame structures and process for its manufacturing

Publications (2)

Publication Number Publication Date
EP1117880A1 EP1117880A1 (en) 2001-07-25
EP1117880B1 true EP1117880B1 (en) 2008-12-17

Family

ID=7882506

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99948803A Expired - Lifetime EP1117880B1 (en) 1998-09-28 1999-09-21 Mineral-wool insulation board for insulation between roof-rafters and process for its manufacturing

Country Status (7)

Country Link
EP (1) EP1117880B1 (cs)
AT (1) ATE417970T1 (cs)
AU (1) AU6193399A (cs)
CZ (1) CZ20011075A3 (cs)
DE (2) DE19844425A1 (cs)
PL (1) PL346902A1 (cs)
WO (1) WO2000019030A1 (cs)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10257977A1 (de) * 2002-12-12 2004-07-01 Rheinhold & Mahla Ag Raumbegrenzungs-Paneel

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2409951A (en) * 1942-05-07 1946-10-22 United States Gypsum Co Insulating bat
DE3032867A1 (de) * 1980-09-01 1982-04-15 Fa. Ph. Kurtz, 6981 Hasloch Waermedaemmplatte aus schaumkunststoff
DE3203622A1 (de) 1981-09-17 1983-04-07 Deutsche Rockwool Mineralwoll-GmbH, 4390 Gladbeck Verfahren und vorrichtung zum herstellen einer schall- und/oder waermeisolierenden mineralfaserplatte oder -bahn
DE3832773C2 (de) * 1988-09-27 1996-08-22 Heraklith Holding Ag Verfahren und Vorrichtung zur Herstellung von Mineralfaserplatten
DE4135623C2 (de) * 1991-02-01 1995-04-27 Heraklith Baustoffe Ag Verfahren und Vorrichtung zum Herstellen von Mineralfaserplatten sowie danach hergestellte Mineralfaserplatten
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
AT2482U1 (de) * 1993-02-17 1998-11-25 Rockwool Int Isolierwatte
DE4423747A1 (de) * 1994-07-06 1996-01-11 Isobouw Daemmtechnik Gmbh Wärmedämmplatte
AT401272B (de) * 1994-11-15 1996-07-25 Tumfart Kurt Dämmatte
WO1997001006A1 (en) * 1995-06-20 1997-01-09 Rockwool International A/S A method of producing an annular insulating mineral fiber covering, a plant for producing an annular insulating mineral fiber covering, and an annular insulating mineral fiber covering
DK0886704T4 (da) * 1996-12-23 2009-11-23 Saint Gobain Isover Isolationselement til fastklemningsmontering mellem tagspær eller bjælker i andre trækonstruktioner

Also Published As

Publication number Publication date
ATE417970T1 (de) 2009-01-15
EP1117880A1 (en) 2001-07-25
AU6193399A (en) 2000-04-17
WO2000019030A1 (en) 2000-04-06
DE69940120D1 (de) 2009-01-29
DE19844425A1 (de) 2000-03-30
PL346902A1 (en) 2002-03-11
CZ20011075A3 (cs) 2002-03-13

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