EP0420750B1 - Panneau composite isolant à base de laine minérale et procédé d'obtention de celui-ci - Google Patents

Panneau composite isolant à base de laine minérale et procédé d'obtention de celui-ci Download PDF

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Publication number
EP0420750B1
EP0420750B1 EP90402655A EP90402655A EP0420750B1 EP 0420750 B1 EP0420750 B1 EP 0420750B1 EP 90402655 A EP90402655 A EP 90402655A EP 90402655 A EP90402655 A EP 90402655A EP 0420750 B1 EP0420750 B1 EP 0420750B1
Authority
EP
European Patent Office
Prior art keywords
panel according
composite
cells
flakes
brushes
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
EP90402655A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0420750A1 (fr
Inventor
Roger Deblock
Yves Demars
Jan Goor
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
Priority to AT90402655T priority Critical patent/ATE97975T1/de
Publication of EP0420750A1 publication Critical patent/EP0420750A1/fr
Application granted granted Critical
Publication of EP0420750B1 publication Critical patent/EP0420750B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/36—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels
    • 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
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating

Definitions

  • the subject of the invention is a composite insulating panel based on mineral wool, in particular glass wool, intended more particularly for insulating the sub-roofs of buildings for residential use. It also relates to a process for obtaining such composite panels, from an insulating felt of mineral wool.
  • Insulating panels known as sub-roofs are known, constituted by rigid prefabricated elements whose length corresponds if possible to the height of roofs which supposes spans of for example more than 5 meters for inclined roofs. These panels are formed of one or two plates, for example of laminated wood or agglomerated particles, separated by a rigid panel of synthetic foam of the polyurethane or expanded polystyrene type.
  • These insulating panels however, only provide thermal insulation and little or no acoustic insulation and, above all, do not have the most satisfactory fire behavior, in particular with the risk of release of toxic gases during a fire.
  • US Pat. No. 4,153,084 describes a method of obtaining a composite panel filled with cellulosic fibers, comprising a step of shredding a compact mass of these fibers, using articulated rotary flails, and the US patent.
  • -4,271,876 describes a method of obtaining a composite panel using the same type of fibers involving a step of scanning the panels after filling using brushes mounted on an axis perpendicular to the axis of scrolling of the panel, brushes associated with scrapers to complete the filling of the cells with the fibrous material.
  • the object of the present invention is to provide a composite panel possibly insulating over long lengths, fire resistant and of relatively low production cost.
  • the composite panel according to the invention must be able to be used in particular as a sub-roofing panel for the insulation of inclined roofs of buildings for residential use.
  • a composite panel whose internal structure is a honeycomb type honeycomb structure filled with mineral wool flakes, for example obtained by grinding a felt -or waste from the production of a felt - mineral wool.
  • the ratio between the size of the cells and the average diameter of the flakes is close to 10 to 1.
  • the depth of the cells is greater than 100 mm, the density of the insulator being advantageously between 30 and 40 kg / m3.
  • the honeycomb structure is advantageously made from a material that is both economical and fire-resistant, such as kraft paper cardboard impregnated with a salt and / or a phenolic resin.
  • the filled honeycomb structure is sandwiched between two wooden plates, laminate or agglomerated wood particles, the agglomerated plates being preferred because of their lower cost.
  • These plates are preferably coated with a continuous layer of adhesive, for example polyurethane, which serves both as a bonding agent for the honeycomb structure and as a barrier layer impermeable to water vapor and liquid water, this in order to '' prevent the vapor which is present in the relatively warmer atmosphere of the attic from condensing at the rear of the composite panel, roof side and damaging it.
  • the invention also relates to a process for obtaining a composite panel according to the invention which essentially comprises a phase of grinding a mineral wool felt and a phase of filling the honeycomb structure during which the panel scrolls under the device for supplying the filling material, the grinding being obtained by means of rotary flails and being continued according to the invention until the flakes thus formed fall through a grid whose passage meshes have a dimension between 1/20 and 1 times the size of the cells and preferably of the order of 1/10; the filling phase comprising a sweep by means of sets of brushes mounted slightly inclined around an axis perpendicular to the direction of travel of the panel.
  • the flakes are obtained by grinding a mineral wool felt. It can be a continuous felt produced for this purpose or possibly non-continuous production waste.
  • a mineral wool felt previously compressed between two rollers, in front of articulated flails carried by a rotating shaft, the flakes produced escaping from the threshing chamber through an opening closed by a grid whose passage meshes have a dimension between 0.05 and 1 times the size of the cells of the honeycomb structure and preferably of the order of 0.1.
  • the flakes are preferably used directly to fill the honeycomb structure which is preferably conveyed at a speed for example between 0.20 and 20 meters per minute.
  • This first removal is completed by at least one of the following measures: suction, sweeping, vibration.
  • the honeycomb structure For a suction, the honeycomb structure must be arranged on a porous bottom preferably constituted by a fiberglass veil left in place during the bonding of the surface plates.
  • the alveo5 laire structure is directly glued to a surface plate conveyed by a vibrator and / or scrolling under one or more sets brushes rotating around one or more axes perpendicular to the longitudinal axis of the panels and slightly inclined relative to the transverse axis of the panels so that the brushes "scan" the panels transversely and thus favor the filling of the cells by flakes.
  • the bristles of the downstream sets penetrate deeper into the cells than those of the first sets to come into contact with the flakes; the penetration height can advantageously be between 1 and 10 mm.
  • all the parts in contact with the flakes, in particular the walls of the threshing chamber, the grid and the bristles of the brush are preferably made of plastic material, for example Plexiglass R for rigid parts, this in order to '' prevent the glass wool crushed by the plagues from sticking to these elements by the effect of attracting electrostatic charges.
  • a composite panel according to the invention and such as that shown diagrammatically in FIG. 1 should preferably be able to have a length L corresponding to the dimensions of the inclined sections of a sloping roof, and not require too many fixing points during its implementation. Such qualities therefore assume a range of 5 to 6 meters or more which cannot be obtained with a simple panel of compressed mineral wool bound by a formo-phenolic resin for example. It is also not desirable to reinforce the panels with spacers of the chevron type because, in addition to the inherent cost thereof, their installation may require, for example, an economically impractical grooving operation.
  • the solution according to the invention consists in the use of a spacer structure of the honeycomb type which we know to be allows a particularly high mechanical resistance.
  • a relatively inexpensive prefabricated structure can be used, for example made of a cardboard having undergone chemical treatment to improve its fire resistance by impregnation with a phenolic resin and / or an appropriate saline solution.
  • This spacer structure 3 is glued between two wooden plates, plywood, chipboard, at least one of these two plates can be replaced possibly by a plasterboard, fiber cement or equivalent.
  • the height of this structure is preferably greater than 100 mm and more preferably 130 mm, this in order to provide a sufficient filling volume for quality insulation.
  • the size of the cells is preferably between 20 and 50 mm and is advantageously of the order of 40 mm.
  • the insulating material for filling the cells is preferably constituted by flakes whose average diameter is close to 1/10 times the size of the cells.
  • flakes between glass wool a ratio of 1 to 10 is a good compromise which makes it possible to satisfy both the requirements in terms of insulation - which supposes "light” flakes trapping a good amount of air and the filling requirements so that the flakes penetrate well into the cells.
  • these flakes are obtained by grinding a glass wool felt possibly containing a resin. It is possible, for example, to use the production scrap from installations for producing insulation felts whose density is between 90 and 100 kg / m3 or even felts specially prepared for the invention.
  • the milling technique used is related to the technique more commonly used for the production of blown wool, but by interposing a grid between the milling chamber and the outlet so as to allow only flakes smaller than a given size to pass through. .
  • the grid meshes preferably have a length of between 1/20 and 1 times the size of the cells and advantageously the meshes of the grid have a length of between 1/10 to 1/3 of the size of the cells.
  • the installation shown here schematically comprises from the bottom up a loading assembly 4, a grinding assembly 5 and a filling assembly 6.
  • the loading assembly 4 is essentially constituted by a felt conveyor belt 7, a guide roller 8 and two compression rollers 9 and 10 which compress the felt and force it to penetrate into the grinding assembly 5, the walls of which for example made of glass or material plastic are not shown here.
  • the grinding means are constituted by articulated flails 11 rotatably mounted around a shaft 12. The flakes then formed must pass through a grid 13 whose mesh is 10 mm in the case of example then arrive at the lower level or level filling 6.
  • This filling level 6 comprises a conveyor 14 on which pass panels 15 consisting of a plate 16 for example made of chipboard and a honeycomb structure 17 whose cells are for example 130 mm high and 40 mm large.
  • pass panels 15 consisting of a plate 16 for example made of chipboard and a honeycomb structure 17 whose cells are for example 130 mm high and 40 mm large.
  • the structure, made of fireproof cardboard, is glued to the plate 16 which is therefore made impermeable to water vapor.
  • each set here comprises brushes with axes perpendicular to the direction of advance of the conveyor 14, but whose plane is inclined so that their bristles sweep a certain width.
  • These bristles are preferably flexible bristles of plastic material of the nylon type.
  • the brushes of the set 19, positioned further downstream of the line, are such that their bristles penetrate into the honeycomb structure a little deeper than those of the brushes of the set 18.
  • the respective penetration depths can be for example 1 and 10 mm.
  • one or two additional sets can be used. Under these conditions, the cells can be completely filled with a density of insulating material of, for example, between 30 and 40 kg / m3.
  • the fire resistance of composite panels according to the invention has been verified as follows: a model is made having the dimensions 4300 mm x 1600 mm by abutting two composite panels according to the invention of 4300 mm x 800 mm, the central joint being constituted by a flexible self-adhesive plastic material. The model is exposed to a fire and its fire resistance is measured using the loss of flame resistance and the loss of fire resistance as a criterion. We finally obtain a fire resistance of 45 minutes, a more than satisfactory duration. Furthermore, the composite panels according to the invention provide sound and sound insulation of quality.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Laminated Bodies (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Finishing Walls (AREA)
  • Panels For Use In Building Construction (AREA)
EP90402655A 1989-09-27 1990-09-27 Panneau composite isolant à base de laine minérale et procédé d'obtention de celui-ci Expired - Lifetime EP0420750B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90402655T ATE97975T1 (de) 1989-09-27 1990-09-27 Zusammengesetzte isolierplatte auf basis von mineralwolle und verfahren zu ihrer erzeugung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8912631A FR2652369B1 (fr) 1989-09-27 1989-09-27 Panneau composite isolant a base de laine minerale et procede d'obtention de celui-ci.
FR8912631 1989-09-27

Publications (2)

Publication Number Publication Date
EP0420750A1 EP0420750A1 (fr) 1991-04-03
EP0420750B1 true EP0420750B1 (fr) 1993-12-01

Family

ID=9385856

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90402655A Expired - Lifetime EP0420750B1 (fr) 1989-09-27 1990-09-27 Panneau composite isolant à base de laine minérale et procédé d'obtention de celui-ci

Country Status (5)

Country Link
EP (1) EP0420750B1 (da)
AT (1) ATE97975T1 (da)
DE (1) DE69004916T2 (da)
DK (1) DK0420750T3 (da)
FR (1) FR2652369B1 (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1336713A2 (en) 2002-02-19 2003-08-20 Isover Saint-Gobain Fire protection means

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105015047B (zh) * 2014-04-24 2017-01-25 沈阳航空航天大学 一种树脂蜂窝夹芯结构及其复合材料结构的制备方法
EP3339007A1 (de) * 2014-12-22 2018-06-27 MAGNA STEYR Fahrzeugtechnik AG & Co KG Verfahren und vorrichtung zur herstellung eines sandwichbauteils
CN107825788A (zh) * 2017-11-30 2018-03-23 江苏标榜装饰新材料股份有限公司 一种吸音蜂窝板
CN110005121A (zh) * 2019-05-14 2019-07-12 嘉兴市三一阳光家居科技有限公司 一种具有防火报警功能的新型墙板

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1331266A (en) * 1969-10-17 1973-09-26 Hexcel Corp Cells of structural honeycomb with fibrous material
DE2659551A1 (de) * 1976-12-30 1978-07-06 Dynamit Nobel Ag Platten- bzw. bahnfoermiges element mit polsternder und daemmender wirkung
US4153084A (en) * 1977-07-21 1979-05-08 Payne Joe J Machine for use in fabricating panels filled with pulverized insulation material
US4271876A (en) * 1979-04-05 1981-06-09 Nash Henry R Method and apparatus for filling honeycomb panels with fiber insulation
DE3273616D1 (en) * 1981-06-26 1986-11-13 Quinton & Kaines Holdings Composite boards and panels
SE466299B (sv) * 1983-08-04 1992-01-27 Micropore International Ltd Vaermeisolerande kropp och saett att framstaella den, innefattande en armerande bikakestruktur och ett vaermeisolationsmaterial
FR2592670A1 (fr) * 1986-01-08 1987-07-10 Nord France Entreprise Complexe d'isolation phonique et thermique
DE3776230D1 (de) * 1986-08-28 1992-03-05 Ciba Geigy Ag Mit silikat behandelte bienenwabenstruktur.
DE3720371A1 (de) * 1987-06-19 1989-01-05 Messerschmitt Boelkow Blohm Leichtbauverbundplatte und verfahren zu deren herstellung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1336713A2 (en) 2002-02-19 2003-08-20 Isover Saint-Gobain Fire protection means

Also Published As

Publication number Publication date
FR2652369B1 (fr) 1995-04-14
ATE97975T1 (de) 1993-12-15
DE69004916D1 (de) 1994-01-13
EP0420750A1 (fr) 1991-04-03
FR2652369A1 (fr) 1991-03-29
DK0420750T3 (da) 1994-03-28
DE69004916T2 (de) 1994-06-09

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