EP3964618A1 - Isolation en laine minérale - Google Patents

Isolation en laine minérale Download PDF

Info

Publication number
EP3964618A1
EP3964618A1 EP21194460.8A EP21194460A EP3964618A1 EP 3964618 A1 EP3964618 A1 EP 3964618A1 EP 21194460 A EP21194460 A EP 21194460A EP 3964618 A1 EP3964618 A1 EP 3964618A1
Authority
EP
European Patent Office
Prior art keywords
mineral wool
insulation
fibres
less
felt
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.)
Pending
Application number
EP21194460.8A
Other languages
German (de)
English (en)
Inventor
Marko MEGLIC
Anze GRILC
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.)
Knauf Insulation SPRL
Original Assignee
Knauf Insulation SPRL
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 Knauf Insulation SPRL filed Critical Knauf Insulation SPRL
Publication of EP3964618A1 publication Critical patent/EP3964618A1/fr
Pending legal-status Critical Current

Links

Images

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
    • 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
    • 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
    • D04H1/558—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 in combination with mechanical or physical treatments other than embossing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/34—Elements and arrangements for heat storage or insulation

Definitions

  • the present invention relates to a mineral wool insulation for thermal and/or acoustic insulation, notably of household appliances or electrical appliances, particularly ovens, with or without a pyrolytic cleaning function, for example microwave ovens with grill function.
  • Heat generating household appliances for example ovens, commonly comprise double walls surrounding the oven cavity which define a space filled with insulation material.
  • the insulation material is intended to: reduce loss of energy to the surroundings, thus reducing energy consumption of the appliance; and/or shield elements of the relevant appliances, for example wiring, electrical components and electrical motors, and/or adjacent spaces or furniture from high temperature exposure; and/or reduce noise emission.
  • Mineral wool is often a preferred insulation material for such applications thanks to its thermal insulation properties, its resistance to relatively high temperature exposure, its acoustic attenuation and its good fire resistance.
  • any organic binders used in the mineral wool product tends to decompose when first subjected to high temperatures and to generate unpleasant or undesired gas emissions; consequently, the insulation mineral fibre material for such applications preferably contains no or only low levels of organic binders.
  • inorganic binders may be used but these tend to result in an insulation material which releases an undesirable level of dust during assembly and/or loses strength or becomes sticky if exposed to humid conditions, for example during transport or storage.
  • Needled mineral wool felts comprising mineral wool fibres subjected to needling have also been proposed for thermal insulation in household appliances.
  • needled glass fibre mineral wool felts or needled rock fibre mineral wool felts are used for thermally insulating oven cavities, generally being arranged within an insulation cavity which surrounds the oven cavity.
  • the thermal conductivity of mineral wool felts tends to increase upon needling, and even by decreasing the amount of needling, the thermal conductivity and the energy efficiency of the insulated oven are not as good as required.
  • the mineral wool insulation is not self-supporting anymore and falls apart, rendering the installation of the felt difficult for the requirements of the industry.
  • needling aids are often used but also tends to decompose when first subjected to high temperatures and to generate unpleasant or undesired gas emissions.
  • One aim of the present invention is to provide an improved mineral wool insulation configured to improve the energy efficiency of an oven and an improved oven which incorporates such a mineral wool insulation.
  • Another aim of the present invention is to provide an insulated oven having improved energy efficiency.
  • the present invention provides an oven comprising a mineral wool insulation in accordance with claim 1.
  • Other aspects are defined in other independent claims.
  • the dependent claims define preferred or alternative embodiments.
  • the term "consists essentially of” is intended to limit the scope of a definition or claim to the specified materials or steps and those that do not materially affect the basic and novel characteristic(s) of the so defined or claimed invention.
  • the standards referred therein are those currently in force at the effective date of the present patent application.
  • the binder-free mineral wool insulation is preferably a unitary binder-free mineral wool insulation.
  • unitary mineral wool insulation means a mineral wool insulation in which all of the mineral wool of the insulation is sufficiently held together so that the mineral wool insulation can be handled and manipulated as a single unit (as opposed to a collection of two or more freely separable individual pieces of mineral wool).
  • Use of a unitary mineral wool insulation facilitates handling of the mineral wool insulation, for example for placement in an oven or microwave or for assembly with other mineral wool insulations.
  • the invention provides a method of manufacturing mineral wool insulation, comprising i) exposing a mineral wool felt of mineral wool fibres to a temperature of at least 450°C and ii) compressing the mineral wool felt while hot to form the mineral wool insulation.
  • the temperature of at least 450°C is sufficient to slightly soften the external surface of the fibres in order to connect and bond the fibres together but not too high to completely soften or melt the fibres, the temperature being sufficient to increase the level of tangling between fibres when compressed.
  • the combined effect of heat and compressing has been found to provide sufficient integrity to the fibres to provide a self-supporting mineral wool insulation, which can be handled and/or transported and/or assembled in an appliance.
  • the heating temperature of at least 450°C facilitates compressing of the mineral wool fibres, and after the step of compressing, the mineral wool insulation substantially retain its compressed thickness and does not recover to the original thickness before compressing.
  • the heating temperature may be between 500°C and 600°C, preferably between 520°C ad 570°C.
  • the skilled person will adapt the temperature based on the mineral wool fibre composition. For example, the temperature required to soften the external surfaces of stone wool fibres will usually be higher than the temperature required for glass wool fibres.
  • the mineral wool felt is compressed under a pressure of at least 15kPa and/or less than 35kPa, notably in the range 20-30kPa.
  • This provides sufficient pressure to increase the adhesion and for the entanglement between the fibres, and provide the desired thickness whilst avoiding breakage of the fibres.
  • These ranges of pressure are particularly adapted to compress a mineral wool felt from a thickness in the range 5-20cm to a thickness in the range 15-50mm.
  • the thickness of the mineral wool felt may decrease by at least 3 times, by least 5 times, by least 7 times and/or by less than 15 times, by less than 12 times, by less than 10 times with respect of the thickness before compressing.
  • the compressing of the mineral wool felt may last at least 30 seconds, at least 1 minutes, at least 5 min, at least 10 min and/or less than 20 min, notably less than 15 min.
  • the duration of the compressing may depend on the temperature of the mineral wool fibres during the compressing. Particularly when the mineral wool fibres were exposed to heat before compressing, the compressing may last at least 30 seconds and/or less than 5 minutes. Alternatively, when the mineral wool fibres are heated during the compressing, the compressing may last at least 5 minutes, at least 10 minutes and/or less than 20 minutes.
  • the compressing of the mineral wool felt may be performed by heating one or two clamping plates and compressing the mineral wool felt between the one or two heated clamping plates, notably during at least 5 min, at least 10 min and/or less than 20 min, notably less than 15 min.
  • the clamping plate(s) are preferably heated to a temperature of at least 520°C, at least 550°C, at least 570°C and/or less than 650°C or less than 620°C, for example, of about 600°C.
  • the compressing of the mineral wool felt is performed within a heated oven.
  • the mineral wool felt is compressed inside the heated oven between compressing roller(s) and/or compressing belt(s).
  • the mineral wool felt may be provided as a continuous mineral wool felt laid down on a conveyor.
  • the speed of the conveyor may be set so that the mineral wool felt is compressed within the oven for a duration as previously indicated.
  • the heated oven preferably has a heating zone having a temperature between 500°C and 600°C, preferably between 520°C and 570°C.
  • a facing may be applied on one or each of its major surfaces of the mineral wool insulation as described above.
  • the facing may be an aluminium foil, notably an aluminium foil reinforced by a glass scrim.
  • the facing may be applied on one or both major surfaces of the mineral wool insulation while the surface(s) of the mineral wool insulation are still hot, for example between 50-200°C.
  • the facing may be applied whilst the mineral wool insulation is at room temperature.
  • the facing may be applied on the same site or at a different production plant.
  • the facing may be applied by an adhesive, preferably an inorganic adhesive, for example water glass.
  • the mineral wool insulation as described above may be provided in the form of a pre-cut mineral wool insulation configured to be assembled around the oven by folding it along an edge of the oven, around at least two adjacent sides of the oven, preferably three or four or even five sides thereof or as a rectangular shaped mineral wool insulation to insulate one side of the oven, for example a rear side, with no folding around the edges.
  • the mineral wool insulation as described above may comprise cut outs; these may be convenient for the arrangement of cable ducts or tubing, such as power connections, or for the arrangement of electrical fans or other equipment elements. Further cut outs or notches may be provided to facilitate connection of two adjacent mineral wool insulations. Yet further cut outs or notches may be provided in order to adapt the mineral wool insulation to the design requirements of the household appliance it is intended to insulate.
  • the mineral wool insulation as described above may provide an energy efficiency of at least A, preferably of at least A+, measured according to EN60350.
  • the present invention provides an oven having an oven cavity thermally insulated with mineral wool insulation, notably wherein the mineral wool insulation is provided within an insulation cavity surrounding the oven cavity, wherein the mineral wool insulation consists of glass wool fibres and is binder-free, notably organic binder-free.
  • the oven comprises a mineral wool insulation as described above, having one or more of the features described above.
  • the mineral wool insulation of the oven may comprises glass wool fibres, preferably consists essentially of glass wool fibres, more preferably consists of glass wool fibres.
  • the oven may be insulated by one, two or three distinct mineral wool insulations, notably as described above.
  • the mineral wool insulation as described above may be a unitary oven mineral wool insulation, covering the bottom, the top and three sides of the oven cavity.
  • a first mineral wool insulation which is called the "backwall”
  • a second mineral wool insulation which is called the “wrapper”
  • three mineral wool insulation are used for covering the five sides of the oven cavity.
  • no plastics foil is used to envelop the mineral wool insulation installed within a cavity of the oven. Because of the high temperature generated by the oven, above the melting point of the plastics of the plastics foil, the plastics foil may melt and damage the oven and render the mineral wool insulation encompassed in the plastics foil ineffective.
  • the mineral wool felt may be provided as a roll of binder-free mineral wool fibres.
  • a liner is preferably applied on one major surface of the mineral wool felt. The liner, separating layers resulting from the rolling, facilitates the unrolling as it avoids entanglement of fibres between adjacent layers.
  • the liner may be a plastics liner.
  • the mineral wool fibres of the mineral wool felt may be fiberized by internal centrifugation.
  • the mineral wool fibres subsequent to fiberizing lay down on a conveyor by an air stream, thus forming a continuous mineral wool felt, also known as "air laid mineral wool felt”.
  • Fiberizing mineral wool fibres which lay down on a conveyor (or a collecting belt) is particularly adapted for providing mineral wool fibres substantially parallel to the main extension of the mineral wool insulation, notably parallel to the direction of the conveyor.
  • the parallelism of the mineral wool fibres provides a mineral wool felt and a mineral wool insulation having a low thermal conductivity.
  • the conveyor is a perforated, air permeable belt having a collecting side at which the individual mineral wool fibres are laid down to form the mineral wool felt with the other side of the collecting belt being subjected to reduced pressure (for example by an air extraction fan) to facilitate separation and laying down of the mineral wool fibres from the air stream in which they are carried.
  • reduced pressure for example by an air extraction fan
  • the mineral wool fibres of the mineral wool felt and of the mineral wool insulation are preferably orientated so that they are as parallel as possible to the major surfaces i.e. perpendicular to the heat flow; this contributes to achieving a low thermal conductivity. It is preferable to arrange for a suitable proportion of the mineral fibres of the mineral wool insulation felt to have a length which, on the one hand is sufficiently long to facilitate interconnection between fibres when the mineral wool felt is compressed (preferably at least 50% of the fibres, more preferably at least 80% of the fibres, having a length of at least 30mm, preferably at least 50mm) and, on the other hand which facilitates alignment of the fibres substantially parallel to the major surfaces of the mineral wool felt (preferably at least 50% of the fibres, more preferably at least 80% of the fibres, having a length less than 150mm or less than 100mm). It is believed that the compressing of the heated mineral wool felt when hot as disclosed herein contributes to achieving this desired fibre orientation in the mineral wool insulation and thus contributes to providing low thermal conductivity
  • the mineral wool fibres are unneedled mineral wool fibres, i.e. mineral wool fibres which are not subjected to needling. Needling changes the orientation of at least some of the fibres of a mineral wool felt by passing a plurality of needles repeatedly through its thickness. Needling increases thermal conductivity. Additionally, it is difficult to needle thin fibres, particularly fibres having diameter, for example, below 4 ⁇ m.
  • the use of unneedled mineral wool facilitates the desired orientation of the mineral wool fibres as parallel as possible to the major surfaces so as to provide low thermal conduction.
  • the mineral wool insulation formed from the unneedled mineral wool felt is, likewise, unneedled.
  • the mineral wool insulation of the invention is significantly different to VIP cores, notably in its structure and properties. Whilst having good thermal conductivity due to their wet-laid mineral wool fibres being very well aligned and parallel to the major surfaces, cores of vacuum insulating panels (VIP) have too high a density, notably above 100kg/m 3 , to be used in household appliances, notably kitchen ovens as they absorb too much energy; in addition, they generally have insufficient mechanical strength for the required handling.
  • VIP vacuum insulating panels
  • the mineral wool insulation may have one or a combination of two, three or four of the following properties:
  • the thermal conductivity is preferably measured in accordance with EN12667.
  • the mineral wool insulation has the combination of features i), iii) and iv).
  • the mineral wool felt and/or the mineral wool insulation as described above are preferably binder-free, notably organic binder-free, having less than 0.3 wt% binder and preferably less than 0.1 wt% binder.
  • the amount of binder notably the amount of organic binder, in the felt or in the mineral wool insulation may be less than 8% by weight and preferably less than 2% by weight as determined by loss on ignition (LOI) and more preferably less than 0.5% by weight binder.
  • LOI loss on ignition
  • the mineral wool insulation as described above is also preferably free of organic compounds. This reduces undesired off gassing of the mineral wool upon first heating.
  • the mineral wool felt notably the continuous mineral wool felt, may have one of more of the following features prior to being exposed to a temperature of at least 450°C and compressed while hot:
  • the mineral wool fibres of the mineral wool insulation described above may be glass wool fibres or rock wool fibres (also known as stone wool fibres).
  • the mineral wool fibres are glass wool fibres, notably virgin glass wool fibres.
  • the mineral wool fibres, notably glass wool fibres make up at least 70 wt%, preferably at least 80 wt% and more preferably at least 90 wt% of the mineral wool insulation.
  • the glass mineral wool fibres may comprise: > 55 wt-% silicon oxide (SiO 2 ) and/or ⁇ 10 wt-% aluminium oxide (Al 2 O 3 ); and/or an alkali/alkaline-earth ratio of their composition which is > 1; and/or a combined quantity of CaO and MgO ⁇ 20 wt-%; and/or a combined quantity of Na 2 O and K 2 O > 8%wt.
  • the glass mineral wool fibres are C-glass wool fibres.
  • the glass wool fibres may have a softening point in the range 600-750°C, notably in the range 650-700°C.
  • the glass wool fibres may have a glass transition temperature in the range 500-600°C.
  • the rock mineral fibres may comprise: between 30 and 55 wt-% SiO 2 and/or between 10 and 30 wt-% Al 2 O 3 ; and/or an alkali/alkaline-earth ratio of their composition which is ⁇ 1; and/or a combined quantity of CaO and MgO ranging from 20 to 35 wt-%; and/or a combined quantity of Na 2 O and K 2 O ⁇ 8 wt%; and/or a total iron content expressed as Fe 2 O 3 of between 4 and 10 wt-%.
  • the rock wool fibres may have a softening point in the range 900-1200°C, notably in the range 1000-1100°C.
  • softening point means the temperature at which the mineral fibre composition deforms under its own weight and which corresponds to a viscosity of 10 7.6 poise (10 6.6 Pa.s).
  • the softening point may be determined by Vicat method in accordance to ISO 306.
  • the mineral wool fibres of the mineral wool insulation felt and/or the mineral wool insulation as described above may have an average diameter of less than 8 ⁇ m, preferably less than 6 ⁇ m, more preferably less than 5 ⁇ m.
  • the mineral wool fibres may have an average diameter of at least 2.5 ⁇ m, at least 3 ⁇ m or at least 4 ⁇ m.
  • the mineral wool insulation has a density of less than 40kg/m 3 , preferably less than 30kg/m 3 and comprises glass wool fibres having preferably an average fibre diameter of less than 4 ⁇ m. That combination of features provides a better thermal insulation and an improved energy efficiency for an insulated oven, particularly with respect of an oven insulated by an otherwise similar but needled mineral wool insulation.
  • the mineral wool fibres of the mineral wool insulation as described above may have a length of at least 30mm, at least 50mm and/or less than 150mm or less than 100mm. Whilst not wishing to be bound by theory, having longer fibres than, for example, short fibres, for example those used in cores of vacuum insulation panel, is believed to increase the connection between the fibres when compressing the fibres while hot.
  • the mineral wool insulation as described above may be free of fluorine compound(s) and/or free of mineral oil and/or free of organic compound(s).
  • the mineral wool insulation Upon being heated to a temperature of ⁇ 100°C or ⁇ 200°C, notably about 350°C, for example prior to assembly in an appliance, the mineral wool insulation preferably releases no more that the following levels of one or more of the following compounds (expressed in mg of compound per kg of mineral wool insulation):
  • the said heating to a temperature ⁇ 100°C or ⁇ 200°C, notably about 350°C, may be the first heating of the mineral wool insulation to such temperatures.
  • Such heating may comprise passing heated air having a temperature ⁇ 100°C or ⁇ 200°C or ⁇ 300°C and/or ⁇ 500°C or ⁇ 400°C through the mineral wool insulation.
  • the mineral wool insulation may satisfy the aforementioned level of emissions when first raised to such temperatures once assembled in an appliance, for example, during first use of an oven or a first pyrolytic cleaning cycle of an oven.
  • Rolling the air-laid mineral wool layer to provide a roll of mineral wool suitable for transportation preferably comprises applying a liner, for example a sheet of plastics or paper, to one major surface of the mineral wool layer prior to rolling; the liner which separates the layers within the roll facilitates transport of the roll and the unrolling as it avoids entanglement of fibres between adjacent layers. Where such a liner is used, the liner is preferably separated from the mineral wool layer, for example during unrolling of the roll , prior to the mineral wool layer being used to provide the mineral wool felt.
  • a liner for example a sheet of plastics or paper
  • the layer of mineral wool may have:
  • a first glass wool felt and a second glass wool felt are firstly formed by fiberizing glass wool fibres 10 by internal centrifugation which are subsequently air laid down on a conveyor 20, thus forming a first continuous felt 10 of glass wool fibres 11 and a second felt of glass wool fibres (not shown), each having a width of about 1.2m, a length of about 10m, a thickness of about 15cm and a density of about 10kg/m 3 .
  • No binder or organic compound is used or projected towards the fibres during the steps described in this example.
  • Each continuous felt may be rolled up, a plastics liner being provided over a major surface of the felt before being rolled up, and shipped to a different site for further processing.
  • the first felt 10 fed on a conveyor 20 is compressed between two hot clamping plates 30,31.
  • One plate 30 supporting the felt is fixed whilst the other plate 31 is movable towards the first felt.
  • the plates are pre-heated so that, when compressing the felt 10, the clamping plates 30,31 have a temperature of about 570°C. Due to this temperature, during the compressing and heating step, the temperature within the felt 10 of glass fibres reaches about 550°C.
  • the clamping plates 30,31 are used to compress the felt of glass wool fibres during about 10 minutes at a pressure of about 20kPa, thereby forming a mineral wool insulation 12 having a thickness of about 30mm, a weight of about 1500 g/m 2 and a density of about 50kg/m 3 .
  • the mineral wool insulation 12 is cooled down at room temperature.
  • a second mineral wool insulation (not shown) is manufactured for comparison from the second mineral wool felt.
  • the second mineral wool insulation is manufactured by needling the glass wool fibres of the second mineral wool felt, the needling being facilitated with a needling aid, so that the second mineral wool insulation has a thickness of about 30mm, a weight of about 1500 g/m 2 and a density of about 50kg/m 3 .
  • the thermal conductivity with respect of temperature of the mineral wool insulation 12 of the specific example and of the comparative example is shown in Fig 2 .
  • the reference material is a needled glass wool insulating panel having a density of about 60kg/m 3 and a thickness of about 20mm.
  • the comparative mineral wool insulation made of glass wool fibres, manufactured according to the invention has a density of about 60kg/m 3 and a thickness of about 20mm. Comparative data are provided below. As seen in the table below, the panel according to the invention provides a better, lower energy efficiency of the oven than the needled insulating panel (difference of energy consumption ⁇ ).
  • Reference Invention Oven Function Material Energy consumption - Wh Material Energy consumption - Wh ⁇ A+ label 76L Forced air needled 60/20 870 HP 60/20 850 -20 A+ label 76L Conventional needled 60/20 940 HP 60/20 920 -20 A+ label 76L Eco needled 60/20 660 HP 60/20 620 -40 A+ label 71L Forced air needled 60/20 770 HP 60/20 740 -30 A+ label 71L Convetional needled 60/20 930 HP 60/20 900 -30

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Insulation (AREA)
  • Nonwoven Fabrics (AREA)
EP21194460.8A 2020-09-03 2021-09-02 Isolation en laine minérale Pending EP3964618A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB2013888.9A GB202013888D0 (en) 2020-09-03 2020-09-03 Mineral wool insulation

Publications (1)

Publication Number Publication Date
EP3964618A1 true EP3964618A1 (fr) 2022-03-09

Family

ID=72841252

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21194460.8A Pending EP3964618A1 (fr) 2020-09-03 2021-09-02 Isolation en laine minérale

Country Status (2)

Country Link
EP (1) EP3964618A1 (fr)
GB (1) GB202013888D0 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0726881B1 (fr) * 1993-11-05 2000-07-12 Owens Corning Produit d'isolation a base de fibre de verre
JP2002081596A (ja) * 2000-09-06 2002-03-22 Matsushita Refrig Co Ltd 真空断熱材、および、真空断熱材の製造方法、冷凍機器、ノート型コンピュータ、電気湯沸かし器、オーブンレンジ
US20190186675A1 (en) * 2016-08-01 2019-06-20 Saint-Gobain Isover Insulation process and appliance obtained
JP2019218647A (ja) * 2018-06-18 2019-12-26 マグ・イゾベール株式会社 ガラス繊維を含む成形品、その成形品を含む断熱材およびその成形品の製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0726881B1 (fr) * 1993-11-05 2000-07-12 Owens Corning Produit d'isolation a base de fibre de verre
JP2002081596A (ja) * 2000-09-06 2002-03-22 Matsushita Refrig Co Ltd 真空断熱材、および、真空断熱材の製造方法、冷凍機器、ノート型コンピュータ、電気湯沸かし器、オーブンレンジ
US20190186675A1 (en) * 2016-08-01 2019-06-20 Saint-Gobain Isover Insulation process and appliance obtained
JP2019218647A (ja) * 2018-06-18 2019-12-26 マグ・イゾベール株式会社 ガラス繊維を含む成形品、その成形品を含む断熱材およびその成形品の製造方法

Also Published As

Publication number Publication date
GB202013888D0 (en) 2020-10-21

Similar Documents

Publication Publication Date Title
EP2501780B1 (fr) Matériau intumescent de protection contre l'incendie
KR101222732B1 (ko) 에어로겔 함유 블랭킷
KR101073316B1 (ko) 진공단열재용 코어재료의 제조방법
US8017535B2 (en) Water-soluble moisture addition to enhance molding, stiffness, and surface processing of polymer materials
JP2020193710A (ja) 繊維状材料からウェブを形成する方法
US5609934A (en) Method of manufacturing heat bonded glass fiber insulation boards
US20060254855A1 (en) Fibrous material having densified surface for improved air flow resistance and method of making
US20030049488A1 (en) Insulation containing separate layers of textile fibers and of rotary and/or flame attenuated fibers
KR101149888B1 (ko) 샌드위치 구조, 샌드위치 구조 생산 방법 및 건축 방법
EP3964618A1 (fr) Isolation en laine minérale
JP2023002527A (ja) パイプや容器のための断熱パッド
JP3379565B2 (ja) 遮音構造体の製造方法
KR101058841B1 (ko) 광물 섬유를 기초로 한 단열 패널과 이를 제조하는 방법
WO2013177800A1 (fr) Matériau d'isolation thermique et d'absorption acoustique et son procédé de fabrication
CN105965988A (zh) 一种绝缘阻燃的复合材料及其制备方法
CN205444519U (zh) 一种新型保温板
JPH06123141A (ja) 耐火パネル
KR20100064841A (ko) 방음, 방진 및 단열용 복합시트
JP4591288B2 (ja) 真空断熱材の製造方法
JPH0249218B2 (ja) Garasuseniseikyuondannetsuban
GB2601545A (en) Mineral wool insulation
CN218814477U (zh) 一种无机纤维复合阻燃隔热带
JP2023159565A (ja) 層間耐火防音装置、層間耐火防音方法、および層間耐火防音構造
US7174747B2 (en) Use of corrugated hose for admix recycling in fibrous glass insulation
GB2607097A (en) Mineral wool insulation

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20220909

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230421