WO2020239681A1 - Mineral wool insulation product for façade renovations - Google Patents

Mineral wool insulation product for façade renovations Download PDF

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Publication number
WO2020239681A1
WO2020239681A1 PCT/EP2020/064422 EP2020064422W WO2020239681A1 WO 2020239681 A1 WO2020239681 A1 WO 2020239681A1 EP 2020064422 W EP2020064422 W EP 2020064422W WO 2020239681 A1 WO2020239681 A1 WO 2020239681A1
Authority
WO
WIPO (PCT)
Prior art keywords
slab
insulation slab
insulation
manufacturing
fagade
Prior art date
Application number
PCT/EP2020/064422
Other languages
French (fr)
Inventor
Susanna Tykkä-Vedder
Bror Engström
Mats Vesterkvist
Hannu-Petteri Mattila
Pontus Lindberg
Harri Kiviluoma
Jani Trygg
Kim Lundström
Original Assignee
Paroc Group Oy
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 Paroc Group Oy filed Critical Paroc Group Oy
Priority to CA3141184A priority Critical patent/CA3141184A1/en
Priority to US17/613,968 priority patent/US20220235548A1/en
Priority to MX2021013566A priority patent/MX2021013566A/en
Publication of WO2020239681A1 publication Critical patent/WO2020239681A1/en

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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
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/16—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/10—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
    • D04H3/105—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by needling
    • 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
    • E04B1/762—Exterior insulation of exterior walls
    • E04B1/7629—Details of the mechanical connection of the insulation to the wall
    • E04B1/7633—Dowels with enlarged insulation retaining head
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0875—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having a basic insulating layer and at least one covering layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062—Prior to assembly

Definitions

  • the invention relates to a new building insulation product type suitable for use on facade or external wall surfaces, and especially uneven fagade surfaces for example in renovation of facades of older buildings.
  • the object of the present invention is to provide a mineral wool i.e. a stone wool or glass wool insulation product where at least one of the disadvantages of the prior art is eliminated or at least alleviated.
  • the objects of the present invention are achieved with an insulation product, a method for manufacturing such a product and use of the product in fagade renovations according to the characterizing por- tions of the independent claims.
  • the present invention is directed to a mineral wool insulation slab for fagade reno vations, comprising a rigid insulation slab or lamella, having a density of 20 - 120kg/m 3 , wherein the insulation slab or lamella has an outer and an inner side, wherein the outer side of the slab comprises an outer layered surface and the inner side of the slab is a mechanically and/or chemically softened layer, which is essen tially softer than the rest of the slab. .
  • the invention is further directed to a method for manufacturing of a mineral wool insulation slab for fagade renovations comprising a rigid insulation slab or lamella , having a density of 20 - 120kg/m 3 , wherein the insulation slab or lamella has and outer and an inner side wherein the method comprises the steps of softening of the inner side of the insulation slab mechanically or chemically, and adding an outer lay ered surface to the outer side of the insulation slab.
  • fagade is used in its traditional sense as the outer surface of a building, but is here to be understood in a broader sense to also comprise the case when a wall is cleaned from the old insulation/old fagade surface, i.e. when the in ner concrete core is remaining.
  • Figure 1 illustrates the problem occurring in fagade renovations where an uneven fagade surface may create air voids behind the insulation slab or lamella.
  • Figure 2 illustrates a solution according to the state of the art wherein a soft insula tion mat is installed on the fagade surface under the insulation slab or lamella.
  • Figure 3 illustrates one embodiment according to the invention where the insulation slab comprises a wind protective surface.
  • Figure 4 illustrates another embodiment according to the invention where the insu lation slab comprises a rendered fagade coating on the outer surface.
  • Figure 5 illustrates different examples of tools that may be used in the mechanical softening process according to the invention. Detailed description of some embodiments
  • the present invention is directed to a building insulation product suitable for use in fagade renovations. More specific the invention is directed to an insulation product or an insulation slab or lamella comprising a wind protective surface layer or coat ing, a thick and dense insulation layer and a softened back side. Especially if the surface of the wall to be insulated is uneven, an installation of an insulation slab or lamella directly on the surface may lead to a situation where air voids are created between the insulation slab and the uneven fagade surface. This leads to a situation where there is a serious risk of internal convection which weakens the insulation value of the whole construction. Traditionally this has been solved by installing a separate soft insulation mat between the fagade surface and the insulation slab. There is a need to simplify the current solutions which require several installation stages, and separate fasteners for the separate layers, which are time consuming to install and expensive.
  • a building insulation product comprises a rigid insulation slab or lamella of mineral wool.
  • the mineral wool slab may for example be a glass wool or stone wool slab.
  • the core of the slab or lamella consists of a thick and dense insulation layer.
  • the insulation slab or lamella comprises a softened layer, which is part of the insulation slab itself but has been either mechanically or chemically softened.
  • the inner side of the slab is a mechanically or chemically softened layer of the one and same insulation slab, i.e. the inner side is not a softer layer glued to the rigid core layer of the insulation slab.
  • the present invention solves this problem by providing a 3-in-one insulation slab or lamella comprising a core of rigid, dense insulation material, with an outer surface comprising an outer layer and a softened backside.
  • a softened backside of the insu lation slab will allow the insulation slab to be installed in one piece on the fagade surface, it may be installed as a single layer and it will prevent any air voids from being created, since the softened backside will be tightly pressed against the fagade surface due to the lower density of it.
  • the density of the insulation slab or lamella is 20 - 120kg/m 3 , preferably 40 - 100kg/m 3 .
  • the density of the softened backside is essentially lover than the density of the slab itself. I.e. the backside is softened to a degree where stones, bulks or other uneven bumps in a fagade surface will sink into the insulation slab when installed in the fagade surface.
  • the density of the softened backside of the insulation slab or lamella is less than 108 g/m 3 . According to a preferred embodiment the density of the softened layer is between 18 and 108 kg/m 3 , and preferably between 30 and 80 kg/m3.
  • Figure 1 describes the problem to be solved by the invention.
  • bumps or dents 1 in a fagade surface may prevent a rigid insulation slab 2 from being tightly closed against the fagade surface 3, thus creating air voids 4 be tween the insulation slab 2 and the fagade surface 3.
  • Figure 2 describes a currently used solution.
  • a separate soft insula tion mat 5 is first installed at the fagade surface in order to smoothen out the cavi ties and dents in the concrete.
  • a soft insulation mat used for this purpose is a product called UNM 37, which has a density of 26-45kg/m3.
  • the soft insulation mat is fastened with its own fasteners 6 before the rigid insulation slab 2 may be installed on top of the soft insulation mat 5.
  • the rigid insulation slab must be installed in a separate installation stage with separate fasteners 7 to those used to fasten the soft insulation mat. However, air voids are avoided but installation is time consuming and requires multiple fasteners.
  • Figure 3 describes an embodiment of the invention wherein the insulation slab or la mella 10 according to the invention comprises a softened backside 11, a rigid core 12 and a wind protective surface or coating 13 on the opposite side from the sof tened backside 11 of the insulation slab 10.
  • one set of fasteners 14 may be used to install the 3-in-one insulation slab.
  • the soft backside of the insulation slab may be tightly installed against the uneven fagade surface, leaving no air voids between the surface and the slab.
  • a separate fagade surface 15 may be installed at the outer side of the insulation slab, preferably leaving a ventilation gap 16 between the new fagade surface and the newly installed insulation layer.
  • Figure 4 describes an alternative embodiment according to the invention.
  • a rendered fagade surface or coating 17 may be applied directly on the outer surface of the insulation slab.
  • the insulation slab still comprises a softened backside 11 and a rigid core 12 of dense insulation material.
  • the insulation slab may be fastened on the fagade surface in one installation stage with a single set of fasteners 14.
  • the softened backside of the insulation slab may be achieved either by mechanical or chemical softening. It is also possible that both softening methods, the mechanical and chemical softening are used on the one and same insulation slab to soften the backside of the slab.
  • the backside of the insulation slab may be cut with blades to create grooves in the slab. Another option is to use metal molds to cut a pattern in the backside of the slab. Using spikes or needles to stab the backside of the slab is an other preferred option, which also will decrease the density of the material.
  • the backside of the slab may also simply be mangled, which makes it softer than the rest of the rigid insulation slab. The softening may be carried out as a step of the manufacturing process. As an in sulation slab is produced on a factory line, the slab may as a last step at the line be fed over a cutting roll or mangle.
  • the insulation slab may then be feed on the line where a cutting roll or mangle has been installed at the bottom of the line.
  • the in sulation slab is then fed over the cutting roll or mangle and is optionally pressed down toward the cutting roll or mangle.
  • the cutting roll or mangle will then over the width of the insulation slab either cut or mechanically mangle the underside of the insulation slab, which underside will become the backside of the finished product.
  • a cutting roll of figure 5b is used.
  • the cutting roll comprises blades along the perimeter of the axis of the cutting roll. The blades will, when an insulation slab is fed over the cutting roll, cut into the insulation slab creat ing cuts in the direction of the line over the entire length of the insulation slab.
  • the distance between the cuts is 0,5 cm - 2,5 cm, more preferably 1cm - 2cm.
  • the cuts are preferably 10-100mm deep, more preferably 20-50 mm deep.
  • Figure 5c shows a cutting roll used in another preferred embodiment.
  • the cutter roll comprises around its axle multiple metal molds placed next to each other preferably covering the entire surface of the cutter roll.
  • the metal molds form a grid on the surface of the cutter roll.
  • the metal molds form a dense pattern thereby creating a pattern in the insulation slab where the distance between to cuts is preferably less than 5 cm, more preferably less than 2,5 cm.
  • the cuts are preferably 10-100mm deep, more preferably 20-50 mm deep.
  • FIG. 5d Yet another preferred embodiment of a cutting roll is illustrated in figure 5d.
  • the cutting roll comprises spikes or needles covering its sur face.
  • the spikes or needles will cut into the surface of the insulation slab, thus softening it and lowering its density.
  • the spikes or needles on the roll are 2cm - 5cm long and at a distance of 0,5 - 2 cm apart from each other.
  • a mangle which can be seen in fig ure 5a, is used for softening of the backside of the insulation slab. An insulation slab is fed over the mangle and pressed against it. The mangling softens the surface of the rigid insulation slab, thus creating a softened backside of the product.
  • the softening of the back side of the insulation slab may be made by chemical softening.
  • a chemical agent may be added to the backside of the insulation slab during manufacturing.
  • Another option is to add less binding agent to the back side of the insulation slab during manufacturing, which would result in a softer layer at the surface of the insulation slab.
  • the density of the softened backside is 5-70% less than that of the core of the rigid insulation slab, preferably 7-50% less and most preferably 10-30% less.
  • Examples of insulation slabs or lamellas that may be used as a base for manufactur ing of a insulation slab according to the invention are Cortex One, with a density of 50-65kg/m 3 , WAS 35 with a density of 70-85kg/m 3 , or Linio 80 which is a lamella, with a density of 75-85kg/m 3 .
  • Cortex One with a density of 50-65kg/m 3
  • WAS 35 with a density of 70-85kg/m 3
  • Linio 80 which is a lamella, with a density of 75-85kg/m 3 .
  • other product already on the market may be used, as well as insulations slabs or lamellas designed and manufactured espe cially for the cause may be used.
  • an outer layered surface is added to the outer side of the insulation slab during manufacturing.
  • the adding of the outer layer may comprise gluing or spraying a wind protective surface or coating or a ren dered surface to the insulation slab.

Abstract

The invention is directed to a mineral wool insulation slab for façade renovations,comprising a rigid insulation slab or lamella having and outer and an inner side,wherein the outer side of the slab comprises an outer layered surface and the innerside of the slab is a mechanically and/or chemically softened layer of the one and same insulation slab. The invention is further directed to a method for manufacturing of such an insulation slab.

Description

Mineral wool insulation product for fagade renovations
Field of the invention
The invention relates to a new building insulation product type suitable for use on facade or external wall surfaces, and especially uneven fagade surfaces for example in renovation of facades of older buildings.
Background of the invention
It is very difficult to install rigid insulation slabs on the uneven fagade surfaces with out forming unwanted voids and air channels between the fagade surface and the insulation slab. Voids and cavities inside the structure causes a risk for internal con vection which weakens the insulation value of the whole construction. Therefore, a soft and thin insulation mat is usually installed first against the uneven surface to make the connection between the rigid insulation slab and the fagade surface smoother to avoid any voids or cavities. Separate insulation layers require a lot of installation time, several fasteners as well as several different insulation products on site, which generates additional material and labour costs.
Brief description of the invention The object of the present invention is to provide a mineral wool i.e. a stone wool or glass wool insulation product where at least one of the disadvantages of the prior art is eliminated or at least alleviated. The objects of the present invention are achieved with an insulation product, a method for manufacturing such a product and use of the product in fagade renovations according to the characterizing por- tions of the independent claims.
The present invention is directed to a mineral wool insulation slab for fagade reno vations, comprising a rigid insulation slab or lamella, having a density of 20 - 120kg/m3, wherein the insulation slab or lamella has an outer and an inner side, wherein the outer side of the slab comprises an outer layered surface and the inner side of the slab is a mechanically and/or chemically softened layer, which is essen tially softer than the rest of the slab. . The invention is further directed to a method for manufacturing of a mineral wool insulation slab for fagade renovations comprising a rigid insulation slab or lamella , having a density of 20 - 120kg/m3, wherein the insulation slab or lamella has and outer and an inner side wherein the method comprises the steps of softening of the inner side of the insulation slab mechanically or chemically, and adding an outer lay ered surface to the outer side of the insulation slab.
The preferred embodiments of the invention are disclosed in the dependent claims.
Herein, the term fagade is used in its traditional sense as the outer surface of a building, but is here to be understood in a broader sense to also comprise the case when a wall is cleaned from the old insulation/old fagade surface, i.e. when the in ner concrete core is remaining.
Brief description of the figures
In the following the invention will be described in greater detail, in connection with preferred embodiments, with reference to the attached drawings, in which
Figure 1 illustrates the problem occurring in fagade renovations where an uneven fagade surface may create air voids behind the insulation slab or lamella.
Figure 2 illustrates a solution according to the state of the art wherein a soft insula tion mat is installed on the fagade surface under the insulation slab or lamella.
Figure 3 illustrates one embodiment according to the invention where the insulation slab comprises a wind protective surface.
Figure 4 illustrates another embodiment according to the invention where the insu lation slab comprises a rendered fagade coating on the outer surface.
Figure 5 illustrates different examples of tools that may be used in the mechanical softening process according to the invention. Detailed description of some embodiments
The following embodiments are exemplary. Although the specification may refer to "an", "one", or "some" embodiment(s), this does not necessarily mean that each such reference is to the same embodiment(s), or that the feature only applies to a single embodiment. Single features or different embodiments may be combined to provide further embodiments.
In the following, features of the invention will be described with a simple example of a device architecture in which various embodiments of the invention may be imple mented. Only elements relevant for illustrating the embodiments are described in detail.
The present invention is directed to a building insulation product suitable for use in fagade renovations. More specific the invention is directed to an insulation product or an insulation slab or lamella comprising a wind protective surface layer or coat ing, a thick and dense insulation layer and a softened back side. Especially if the surface of the wall to be insulated is uneven, an installation of an insulation slab or lamella directly on the surface may lead to a situation where air voids are created between the insulation slab and the uneven fagade surface. This leads to a situation where there is a serious risk of internal convection which weakens the insulation value of the whole construction. Traditionally this has been solved by installing a separate soft insulation mat between the fagade surface and the insulation slab. There is a need to simplify the current solutions which require several installation stages, and separate fasteners for the separate layers, which are time consuming to install and expensive.
A building insulation product according to the invention comprises a rigid insulation slab or lamella of mineral wool. The mineral wool slab may for example be a glass wool or stone wool slab. The core of the slab or lamella consists of a thick and dense insulation layer. On the outer surface, i.e. the side which is to be installed away from the wall surface of the building the insulation slab may comprise a wind protective surface or coating. Alternatively, the insulation slab may be used as base of a rendered fagade surface. On the opposite side of the slab, on the so-called backside or on the inner surface i.e. the surface facing the wall of the building when installed, the insulation slab or lamella comprises a softened layer, which is part of the insulation slab itself but has been either mechanically or chemically softened. The inner side of the slab is a mechanically or chemically softened layer of the one and same insulation slab, i.e. the inner side is not a softer layer glued to the rigid core layer of the insulation slab.
The present invention solves this problem by providing a 3-in-one insulation slab or lamella comprising a core of rigid, dense insulation material, with an outer surface comprising an outer layer and a softened backside. A softened backside of the insu lation slab will allow the insulation slab to be installed in one piece on the fagade surface, it may be installed as a single layer and it will prevent any air voids from being created, since the softened backside will be tightly pressed against the fagade surface due to the lower density of it. The density of the insulation slab or lamella is 20 - 120kg/m3, preferably 40 - 100kg/m3. The density of the softened backside is essentially lover than the density of the slab itself. I.e. the backside is softened to a degree where stones, bulks or other uneven bumps in a fagade surface will sink into the insulation slab when installed in the fagade surface.
The density of the softened backside of the insulation slab or lamella is less than 108 g/m3. According to a preferred embodiment the density of the softened layer is between 18 and 108 kg/m3, and preferably between 30 and 80 kg/m3.
Figure 1 describes the problem to be solved by the invention. In the figure it can be seen how bumps or dents 1 in a fagade surface may prevent a rigid insulation slab 2 from being tightly closed against the fagade surface 3, thus creating air voids 4 be tween the insulation slab 2 and the fagade surface 3.
Figure 2 describes a currently used solution. In this solution a separate soft insula tion mat 5 is first installed at the fagade surface in order to smoothen out the cavi ties and dents in the concrete. One example of a soft insulation mat used for this purpose is a product called UNM 37, which has a density of 26-45kg/m3. The soft insulation mat is fastened with its own fasteners 6 before the rigid insulation slab 2 may be installed on top of the soft insulation mat 5. The rigid insulation slab must be installed in a separate installation stage with separate fasteners 7 to those used to fasten the soft insulation mat. However, air voids are avoided but installation is time consuming and requires multiple fasteners.
Figure 3 describes an embodiment of the invention wherein the insulation slab or la mella 10 according to the invention comprises a softened backside 11, a rigid core 12 and a wind protective surface or coating 13 on the opposite side from the sof tened backside 11 of the insulation slab 10. In this case one set of fasteners 14 may be used to install the 3-in-one insulation slab. The soft backside of the insulation slab may be tightly installed against the uneven fagade surface, leaving no air voids between the surface and the slab. Alternatively, a separate fagade surface 15 may be installed at the outer side of the insulation slab, preferably leaving a ventilation gap 16 between the new fagade surface and the newly installed insulation layer.
Figure 4 describes an alternative embodiment according to the invention. According to the embodiment a rendered fagade surface or coating 17 may be applied directly on the outer surface of the insulation slab. Here, the insulation slab still comprises a softened backside 11 and a rigid core 12 of dense insulation material. The insulation slab may be fastened on the fagade surface in one installation stage with a single set of fasteners 14.
According to the invention the softened backside of the insulation slab may be achieved either by mechanical or chemical softening. It is also possible that both softening methods, the mechanical and chemical softening are used on the one and same insulation slab to soften the backside of the slab.
In case the backside is softened mechanically there are numerous options that may be used. The backside of the insulation slab may be cut with blades to create grooves in the slab. Another option is to use metal molds to cut a pattern in the backside of the slab. Using spikes or needles to stab the backside of the slab is an other preferred option, which also will decrease the density of the material. The backside of the slab may also simply be mangled, which makes it softer than the rest of the rigid insulation slab. The softening may be carried out as a step of the manufacturing process. As an in sulation slab is produced on a factory line, the slab may as a last step at the line be fed over a cutting roll or mangle. The insulation slab may then be feed on the line where a cutting roll or mangle has been installed at the bottom of the line. The in sulation slab is then fed over the cutting roll or mangle and is optionally pressed down toward the cutting roll or mangle. The cutting roll or mangle will then over the width of the insulation slab either cut or mechanically mangle the underside of the insulation slab, which underside will become the backside of the finished product.
In one preferred embodiment a cutting roll of figure 5b is used. The cutting roll comprises blades along the perimeter of the axis of the cutting roll. The blades will, when an insulation slab is fed over the cutting roll, cut into the insulation slab creat ing cuts in the direction of the line over the entire length of the insulation slab.
Preferably the distance between the cuts is 0,5 cm - 2,5 cm, more preferably 1cm - 2cm. The cuts are preferably 10-100mm deep, more preferably 20-50 mm deep.
Figure 5c shows a cutting roll used in another preferred embodiment. The cutter roll comprises around its axle multiple metal molds placed next to each other preferably covering the entire surface of the cutter roll. In other words, the metal molds form a grid on the surface of the cutter roll. As an insulation slab is fed over the cutter roll the roll will turn about its axle and the metal molds will cut into the underside of the insulation slab. Preferably the metal molds form a dense pattern thereby creating a pattern in the insulation slab where the distance between to cuts is preferably less than 5 cm, more preferably less than 2,5 cm. The cuts are preferably 10-100mm deep, more preferably 20-50 mm deep.
Yet another preferred embodiment of a cutting roll is illustrated in figure 5d. Accord ing to this embodiment the cutting roll comprises spikes or needles covering its sur face. When an insulation slab is fed over the cutter roll, the spikes or needles will cut into the surface of the insulation slab, thus softening it and lowering its density. Preferably the spikes or needles on the roll are 2cm - 5cm long and at a distance of 0,5 - 2 cm apart from each other. According to yet another preferred embodiment a mangle, which can be seen in fig ure 5a, is used for softening of the backside of the insulation slab. An insulation slab is fed over the mangle and pressed against it. The mangling softens the surface of the rigid insulation slab, thus creating a softened backside of the product.
According to one embodiment of the invention the softening of the back side of the insulation slab may be made by chemical softening. In this case a chemical agent may be added to the backside of the insulation slab during manufacturing. Another option is to add less binding agent to the back side of the insulation slab during manufacturing, which would result in a softer layer at the surface of the insulation slab.
According to one embodiment of the invention the density of the softened backside is 5-70% less than that of the core of the rigid insulation slab, preferably 7-50% less and most preferably 10-30% less.
Examples of insulation slabs or lamellas that may be used as a base for manufactur ing of a insulation slab according to the invention are Cortex One, with a density of 50-65kg/m3, WAS 35 with a density of 70-85kg/m3, or Linio 80 which is a lamella, with a density of 75-85kg/m3. Of course, other product already on the market may be used, as well as insulations slabs or lamellas designed and manufactured espe cially for the cause may be used.
According to one embodiment of the invention an outer layered surface is added to the outer side of the insulation slab during manufacturing. The adding of the outer layer may comprise gluing or spraying a wind protective surface or coating or a ren dered surface to the insulation slab.
It is apparent to a person skilled in the art that as technology advances, the basic idea of the invention can be implemented in various ways. The invention and its embodiments are therefore not restricted to the above examples, but they may vary within the scope of the claims.

Claims

Claims
1. Mineral wool insulation slab for fagade renovations, comprising a rigid insula tion slab or lamella, the core having a density of 20 - 120kg/m3, which insu- lation slab or lamella has and outer and an inner side, wherein
the outer side of the slab comprises an outer layered surface and
the inner side of the slab is a mechanically, mangled or rolled, and/or chemi cally softened layer, said softened layer being essentially softer than the rest of the slab,
wherein the density of the softened layer of the slab is between 18 and
108kg/m3 and preferably between 30 - 80 kg/m3.
2. Insulation slab according to claim 1, wherein the density of the slab is be tween 40 and 100kg/m3.
3. Insulation slab according to claim 1 or 2, wherein the density of the softened layer of the slab is less than 108kg/m3.
4. Insulation slab according to any of claims 1 - 3, wherein the depth of the softened layer is 10-100 mm, preferably 20-50 mm.
5. Insulation slab according to any of claims 1 - 4, wherein the insulation slab is of stone wool or glass wool.
6. Insulation slab according to any of claims 1-5, wherein the outer side of the insulation slab comprises a wind protective surface or coating.
7. Insulation slab according to any of claims 1-5, wherein the outer side of the insulation slab comprises a rendered fagade coating.
8. Method for manufacturing of a mineral wool insulation slab for fagade reno vations comprising a rigid insulation slab or lamella, having a density of 20 - 120kg/m3, which insulation slab or lamella has an outer and an inner side wherein the method comprises the steps of:
softening of the inner side of the insulation slab mechanically, by rolling or cutting, or chemically, and
adding an outer layered surface to the outer side of the insulation slab, wherein the density of the softened layer of the slab is between 18 and 108kg/m3 and preferably between 30 - 80 kg/m3..
9. The method of manufacturing of an insulation slab according to claim 8, wherein the softening is made mechanically by feeding the insulation slab on a manufacturing line over a Tollable mangle or cutting roll.
10. The method of manufacturing of an insulation slab according to claim 9, wherein the cutting roll comprises blades along the perimeter of the axis of the cutting roll, which will when the insulation slab is fed over the cutting roll, create cuts in the direction of the line over the entire length of the insu lation slab.
11. The method of manufacturing of an insulation slab according to claim 10, wherein the distance between the blades is between 0,5 and 2,5 cm.
12. The method of manufacturing of an insulation slab according to claim 11, wherein the cutting roll comprises metal molds for cutting into the insulation slab.
13. The method of manufacturing of an insulation slab according to claim 9, wherein the cutting roll comprises spikes or needles.
14. The method of manufacturing of an insulation slab according to claim 8, wherein the softening is made chemically by adding less less binding agent to the back side of the insulation slab or by adding a chemical agent to the back side of the insulation slab.
15. The method of manufacturing of an insulation slab according to any of
claims 8 - 14, wherein the adding of an outer layered surface comprises glu ing or spraying a wind protective surface or coating or a rendered surface or coating to the insulation slab.
16. The method of manufacturing of an insulation slab according to any of claims 8 - 15, wherein the insulation slab is of stone wool or glass wool.
17. Use of the insulation slab according to any of claims 1-7 for fagade renova tions.
PCT/EP2020/064422 2019-05-28 2020-05-25 Mineral wool insulation product for façade renovations WO2020239681A1 (en)

Priority Applications (3)

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CA3141184A CA3141184A1 (en) 2019-05-28 2020-05-25 Mineral wool insulation product for facade renovations
US17/613,968 US20220235548A1 (en) 2019-05-28 2020-05-25 Mineral Wool Insulation Product For Façade Renovations
MX2021013566A MX2021013566A (en) 2019-05-28 2020-05-25 Mineral wool insulation product for faã‡ade renovations.

Applications Claiming Priority (2)

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EP19177003.1A EP3744916A1 (en) 2019-05-28 2019-05-28 Mineral wool insulation product for façade renovations
EP19177003.1 2019-05-28

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EP (1) EP3744916A1 (en)
CA (1) CA3141184A1 (en)
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EP4059905A1 (en) 2021-03-18 2022-09-21 HeidelbergCement AG Method and device for carbonation
EP4155279A1 (en) 2021-09-22 2023-03-29 HeidelbergCement AG Method for manufacturing supplementary cementitious material

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Publication number Priority date Publication date Assignee Title
EP4059905A1 (en) 2021-03-18 2022-09-21 HeidelbergCement AG Method and device for carbonation
WO2022194559A1 (en) 2021-03-18 2022-09-22 Heidelbergcement Ag Method and device for carbonation
EP4155279A1 (en) 2021-09-22 2023-03-29 HeidelbergCement AG Method for manufacturing supplementary cementitious material
WO2023046499A1 (en) 2021-09-22 2023-03-30 Heidelbergcement Ag Method for manufacturing supplementary cementitious material

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MX2021013566A (en) 2021-12-10
CA3141184A1 (en) 2020-12-03
US20220235548A1 (en) 2022-07-28

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