WO2020148618A1 - Revêtement bitumineux à haute résistance à la flamme et procédé de production s'y rapportant - Google Patents

Revêtement bitumineux à haute résistance à la flamme et procédé de production s'y rapportant Download PDF

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Publication number
WO2020148618A1
WO2020148618A1 PCT/IB2020/050214 IB2020050214W WO2020148618A1 WO 2020148618 A1 WO2020148618 A1 WO 2020148618A1 IB 2020050214 W IB2020050214 W IB 2020050214W WO 2020148618 A1 WO2020148618 A1 WO 2020148618A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
bituminous
glass
coating
bituminous coating
Prior art date
Application number
PCT/IB2020/050214
Other languages
English (en)
Inventor
Luciano Mazzer
Original Assignee
Iwis Insulation Waterproofing Industrial Systems S.R.L.
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 Iwis Insulation Waterproofing Industrial Systems S.R.L. filed Critical Iwis Insulation Waterproofing Industrial Systems S.R.L.
Publication of WO2020148618A1 publication Critical patent/WO2020148618A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N5/00—Roofing materials comprising a fibrous web coated with bitumen or another polymer, e.g. pitch
    • D06N5/003—Roofing materials comprising a fibrous web coated with bitumen or another polymer, e.g. pitch coated with bitumen
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N5/00—Roofing materials comprising a fibrous web coated with bitumen or another polymer, e.g. pitch
    • D06N5/003—Roofing materials comprising a fibrous web coated with bitumen or another polymer, e.g. pitch coated with bitumen
    • D06N5/006—Roofing materials comprising a fibrous web coated with bitumen or another polymer, e.g. pitch coated with bitumen characterised by the means to apply it to a support or to another roofing membrane, e.g. self-adhesive layer or strip
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
    • E04D5/10—Roof covering by making use of flexible material, e.g. supplied in roll form by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2203/00—Macromolecular materials of the coating layers
    • D06N2203/08—Bituminous material, e.g. asphalt, tar, bitumen
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/06—Properties of the materials having thermal properties
    • D06N2209/065—Insulating
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/06—Properties of the materials having thermal properties
    • D06N2209/067—Flame resistant, fire resistant
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/12—Permeability or impermeability properties
    • D06N2209/126—Permeability to liquids, absorption
    • D06N2209/128—Non-permeable
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/16—Properties of the materials having other properties
    • D06N2209/1692—Weather resistance
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2211/00—Specially adapted uses
    • D06N2211/06—Building materials

Definitions

  • the present invention generically relates to a bituminous coating with high flame resistance and a relative production method.
  • the invention relates to a bituminous coating with three or five layers, advantageously composed of a glass veil, a layer of bitumen modified and supplemented with special flame retardants, a graphite-based compound, a glass fabric or a grit of a material adapted to contrast the trigger of the flame and, potentially, a bituminous adhesive and a silicone film.
  • bitumen coatings exist on the market, with different weights and grammages, which are used in the building industry, such as protective layers for insulating panels for covering roofs or for thermally insulating walls; with similar technology, but a different intended use, the market also proposes bituminous coatings called "under-tile", generally comprising a veil of glass or polyester saturated with an oxidised bitumen or APP or SBS modified based compound .
  • finishing of such products can be in polypropylene TNT, polyester, sand or grit; under-tile coatings are available for laying dry, nailed, or glued, after removing an anti-adherent film.
  • These coatings have the object of serving as a waterproof barrier (which is often also breathable) for roofs, for successively receiving, in the overlying part, Canadian tiles, sheets, tiles or other types of cover.
  • coatings are also available on the market, known as “mineralized” coatings (non bituminous), synthetic, with expandable graphite, which often don't have waterproof characteristics and are subject to deterioration due to the effect of the atmospheric elements, on which, in the overlying part, waterproofing membranes in bitumen/polymer cannot be applied, either with heat or cold.
  • the special production technology developed and the different layers composing the coating, the subject of the present invention allow reaction to fire classes to be obtained, which comply with the most stringent regulations.
  • the coating or bituminous sheet, the subject of the present invention can be the subject of a successive overlying application, with heat or cold, for waterproofing membranes in bitumen/polymer.
  • FIG. 1 is a schematic sectional view of a first embodiment of a bituminous coating or sheet with high flame resistance, according to the present invention
  • FIG. 2 is a schematic sectional view of another embodiment of a bituminous coating or sheet with high flame resistance, according to the present invention.
  • FIG 3 is an illustrative schematic view of a method of producing a bituminous sheet or coating with high flame resistance, according to the invention
  • - figure 4 schematically shows the operating principle of the bituminous coating or sheet with high flame resistance, according to the present invention .
  • the bituminous sheet or coating comprises a stratigraphy comprising a first layer 1 of glass veil with a unit weight or grammage ranging from 50 to 120 g/m 2 , a second layer 2 of compound or bituminous mixture with high fire resistance and a third layer 3 of glass fabric with high heat resistance.
  • a layer 5 of polypropylene TNT or a silicone film is applied to the layer 1 of glass veil, after spreading with a layer 4 of bituminous compound or a mixture with self-adhesive properties.
  • the grammage per m 2 (unit weight) for the coating, the subject of the present invention varies depending on the type, from 300 to 1200 g/m 2 .
  • bituminous mixture of which the second layer 2 is composed comprises distilled bitumen, polypropylene, an anti-flame additive and calcium carbonate, added to which is expandable graphite.
  • bituminous coating in the version with three or five layers as described previously is made with special specifically modified production lines (as shown in detail in the attached figure 3) .
  • the bituminous mixture of which the second layer 2 is composed is prepared in a primary mixer A with distilled bitumen, polypropylene, an anti-flame additive and calcium carbonate. Mixing is carried out for about 3 hours at a temperature of 180°C and, once the compound obtained is optimally dispersed, the aforesaid compound is transferred to a secondary mixer B where the temperature is reduced from 180°C to 150°C.
  • the compound is pumped into a soaking tank C, after adding expandable graphite.
  • the layer 1 of glass veil is soaked on one side with the thus obtained bituminous mixture, and at a first return roller D, the layer 3 of glass fabric is applied above.
  • the next steps are to proceed directly with the cooling K and packaging H, whereas, on the contrary, if under tile is to be manufactured, a second layer 4 of compound or bituminous mixture taken from the mixer F is applied and, successively, a layer 5 of polypropylene TNT to cover the underlying face.
  • the layer 4 of bituminous compound is replaced with a layer of self-adhesive compound and the layer 5 of polypropylene TNT with an anti-adherent silicone film.
  • the layer 1 of glass veil is the support on which the coating of the fire resistant bituminous mixture is carried out, composing the second layer 2.
  • the support In the version with three layers, the support is in direct contact with the insulating panels, while in the version with five layers it is also in contact with the layer 4 of bituminous compound (modified with APP/SBS) or self-adhesive.
  • the glass veil is a product composed of thin and short glass fibres, with a diameter in the order of a tenth of a mm, approximately between 15 and 30 mm long; the fibres are kept together by special polymeric binders, which are usually present for 25-35% of the total mass.
  • the mass of fibres and binder is thermo-calendered when still warm, so as to obtain a homogeneous and planar sheet, which is then wound into rolls.
  • Glass veils which are currently on the market, are classified on the basis of the mass per unit area, which ranges from 30 to 150 g/m 2 , and on the basis of the width .
  • Reinforced versions thereof also exist with longitudinal glass fibres or glass fibres coupled to other materials, such as aluminium and polyester.
  • Glass veil is highly useful for the industry of construction materials and waterproofing and is widely used in the production of bituminous membranes, under tile membranes and coatings for insulating panels.
  • glass veils that can be advantageously used in the present invention are the ones commercially available with the commercial name Evalith® DH.
  • the bituminous compound is a mixture composed of bitumen and other components. At room temperature the bituminous compound is in a solid state and thus, must be processed at a temperature higher than at least 120 °C when it is in a liquid state. Above 300 °C the compound reaches the flashpoint thereof, giving rise to more or less persistent flames. All bituminous compounds are classified according to standard parameters, such as specific weight, needle penetration at a determined temperature, softening point and Brookfield viscosity, the measurement method of which is regulated.
  • the special bituminous compound with high fire resistance composing the second layer 2 of the coating, the subject of the present invention is a mixture composed of bitumen, polypropylene, calcium carbonate and expandable graphite and contains, as anti flame additive, colloidal silica, according to the following proportions:
  • the layer 2 of bituminous compound is applied to the layer 1 of glass veil, according to the present invention, at an amount of 250-800 g/m 2 , depending on the different types of coating desired to be obtained, and then protected with the layer 3 of glass fabric.
  • the layer 3 of glass fabric or mesh used to cover the layer 2 of bituminous compound, both in the version with three layers and in the version with five layers, comprises long glass fibres, intertwined to form threads with a thickness in the order of a tenth of a mm.
  • threads are then arranged in a weft and warp to form an actual fabric.
  • the woven threads are covered with a material adapted to contrast the release of glass fibres by such threads, such as, for example, a paraffinic emulsion of about 1% in mass .
  • the mesh with which the threads are woven is extremely closed and the result thereof is a highly regular surface .
  • this material Due to the chemical composition thereof, this material is highly insensitive to heat and for applications at room temperature it preserves form stability.
  • the material is mechanically isotropic, therefore, it is not affected by the spinning direction and the mechanical characteristics derive from the threads oriented in the weft and warp directions.
  • the smooth and regular surface means the fibres don't stick to skin or clothes (and thus, the material never causes an irritation) and guarantees excellent adhesion to the layer 2 of bituminous compound.
  • Traditional glass fabric is classified according to the mass per unit area (from 50 to 400 g/m 2 ) , the width and the use, which determines the size of the threads and the type of weaving.
  • a typical 100 g/m 2 glass fabric has the following characteristics :
  • the layer 3 of glass fabric acts as a shield for the flame resistant layer 2 of bituminous compound (as shown in detail in the attached figure 4) .
  • the bituminous compound benefits from the shielding effect given by the layer 3 of glass fabric and, during the wait for the trigger of the graphite, it doesn't soften and consequently it does not produce smoke or drip.
  • the glass fabric also plays a vital role in a potential application, with heat, of a waterproofing membrane on the upper surface of the coating, because it protects the graphite inside the layer of bituminous compound, preventing it from expanding during the steps of laying the waterproofing membrane.
  • the result of the test refers to the regulation EN 13501- 1, defining the reaction to fire categories.
  • the regulation requires ignition tests to be carried out according to one or more methods, separately.
  • the maximum category, which can be attributed to the product is class B, the class reached by the product the subject of the invention, with limited flame spread, limited heat peak, limited total heat developed, limited lateral flame front, limited fume production and no flaming droplets.
  • the third layer 3 can be composed of, or comprise, instead of a glass fabric with high heat resistance, a grit of a material adapted to contrast the trigger of the flame; such grit can be, for example, composed of, or comprise, granules of basalt, preferably ceramized, more preferably at a high temperature, and/or chips of slate and/or granules of glass or ceramic material, and/or a combination of such materials.
  • the production of the bituminous coating according to the invention comprises, after soaking the layer 1 of glass veil with the bituminous mixture, as described previously with reference to figure 3, applying thereabove, instead of a layer 3 of glass fabric, the grit of material adapted to contrast the trigger of the flame, to compose the third layer 3.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Working-Up Tar And Pitch (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un revêtement bitumineux à haute résistance à la flamme comprenant trois ou cinq couches, comprenant une première couche de support (1) composée d'un voile de verre, une deuxième couche (2), placée au-dessus de la première couche (1), composée d'un mélange bitumineux comprenant du bitume distillé, du polypropylène, un additif anti-flamme, du carbonate de calcium et du graphite expansible, et une troisième couche (3), superposée sur la deuxième couche (2), composée de tissu de verre ou de grains d'un matériau conçu pour s'opposer au déclenchement de la flamme.
PCT/IB2020/050214 2019-01-16 2020-01-13 Revêtement bitumineux à haute résistance à la flamme et procédé de production s'y rapportant WO2020148618A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102019000000655 2019-01-16
IT102019000000655A IT201900000655A1 (it) 2019-01-16 2019-01-16 Rivestimento bituminoso ad elevata resistenza alla fiamma e relativo metodo di realizzazione.

Publications (1)

Publication Number Publication Date
WO2020148618A1 true WO2020148618A1 (fr) 2020-07-23

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Family Applications (1)

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PCT/IB2020/050214 WO2020148618A1 (fr) 2019-01-16 2020-01-13 Revêtement bitumineux à haute résistance à la flamme et procédé de production s'y rapportant

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IT (1) IT201900000655A1 (fr)
WO (1) WO2020148618A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3402095A (en) * 1963-08-12 1968-09-17 Svenska Icopalfabriken Ab Rollable multi-ply roofing material
GB2052387A (en) * 1979-06-01 1981-01-28 Tajima Roofing Co Thermal insulating and bituminous waterproofing board and application process thereof
US20030219563A1 (en) * 2002-05-21 2003-11-27 Natalino Zanchetta Modified bitumen roofing membrane with enhanced sealability
US20110011021A1 (en) * 2009-07-17 2011-01-20 Lavietes Daniel Fire Resistant Slipsheet
US20130186033A1 (en) * 2012-01-20 2013-07-25 Onduline Fire-resistant cellulose-bitumen roofing sheet and method of manufacturing
WO2014116815A1 (fr) * 2013-01-23 2014-07-31 Firestone Building Products Co., LLC Système de toit résistant au feu et membrane composite
WO2015013176A1 (fr) * 2013-07-23 2015-01-29 Firestone Building Products Co., LLC Procédé de fabrication de matériaux asphaltiques en plaques comprenant un graphite expansible
WO2016145188A1 (fr) * 2015-03-10 2016-09-15 Firestone Building Products Co., LLC Composite pour membrane à base d'asphalte
WO2019228661A1 (fr) * 2018-05-28 2019-12-05 Elements S.R.L. Support bitumineux pour l'industrie de la construction

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3402095A (en) * 1963-08-12 1968-09-17 Svenska Icopalfabriken Ab Rollable multi-ply roofing material
GB2052387A (en) * 1979-06-01 1981-01-28 Tajima Roofing Co Thermal insulating and bituminous waterproofing board and application process thereof
US20030219563A1 (en) * 2002-05-21 2003-11-27 Natalino Zanchetta Modified bitumen roofing membrane with enhanced sealability
US20110011021A1 (en) * 2009-07-17 2011-01-20 Lavietes Daniel Fire Resistant Slipsheet
US20130186033A1 (en) * 2012-01-20 2013-07-25 Onduline Fire-resistant cellulose-bitumen roofing sheet and method of manufacturing
WO2014116815A1 (fr) * 2013-01-23 2014-07-31 Firestone Building Products Co., LLC Système de toit résistant au feu et membrane composite
WO2015013176A1 (fr) * 2013-07-23 2015-01-29 Firestone Building Products Co., LLC Procédé de fabrication de matériaux asphaltiques en plaques comprenant un graphite expansible
WO2016145188A1 (fr) * 2015-03-10 2016-09-15 Firestone Building Products Co., LLC Composite pour membrane à base d'asphalte
WO2019228661A1 (fr) * 2018-05-28 2019-12-05 Elements S.R.L. Support bitumineux pour l'industrie de la construction

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Publication number Publication date
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