EP3574140A1 - Membranes bitumineuses d'étanchéité pour toiture - Google Patents
Membranes bitumineuses d'étanchéité pour toitureInfo
- Publication number
- EP3574140A1 EP3574140A1 EP18704053.0A EP18704053A EP3574140A1 EP 3574140 A1 EP3574140 A1 EP 3574140A1 EP 18704053 A EP18704053 A EP 18704053A EP 3574140 A1 EP3574140 A1 EP 3574140A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- waterproofing membrane
- membrane according
- mat
- organic binder
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
- C03C17/32—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with synthetic or natural resins
-
- 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
- D04H1/58—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/587—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives characterised by the bonding agents used
-
- 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
- D04H1/58—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
- D04H1/64—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
-
- 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
- D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
- D04H5/08—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of fibres or yarns
-
- 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
- D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
- D04H5/12—Glass fibres
-
- 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
-
- 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
- E04D5/02—Roof covering by making use of flexible material, e.g. supplied in roll form of materials impregnated with sealing substances, e.g. roofing felt
-
- 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
- E04D5/06—Roof covering by making use of flexible material, e.g. supplied in roll form by making use of plastics
Definitions
- the present invention relates to waterproofing membranes for roofs, formed of a nonwoven mat of mineral fibers bonded with an organic binder, said mat being coated on at least one of its faces with a layer of bitumen.
- Sealing membranes for terraces or bituminous roofs, generally horizontal or low slope roofs, are fiber-reinforced bitumen membranes, in particular mineral fibers generally in the form of non-woven mats.
- nonwoven mineral fiber mats are reinforcing mats which have two main functions, namely
- thermosetting resins based on formaldehyde for example melamine-formaldehyde, phenol-formaldehyde or urea-formaldehyde resins as organic binders for non-woven mats for reinforcing bituminous waterproofing membranes.
- US Pat. No. 6,993,876 discloses bituminous roofing membranes formed of a glass fiber mat bonded with a urea-formaldehyde resin and a bituminous phase. These membranes contain an agent for modifying the adhesion between the mat and the bituminous phase.
- This agent a polydimethylsiloxane, by reducing the adhesion between the glass fibers of the mat and the bituminous phase allows the latter to "slip" on fiberglass, which - in the event of a tear - gives rise to the appearance of pull-out fibers, an English term which could be translated as "pulled or stripped” fibers, which slow down the propagation of the primed tear.
- the present invention is based on the discovery that a relatively low proportion - of the order of a few percent only - of an ethylene-vinyl acetate (EVA) copolymer in the organic resin-based formaldehyde resin binder.
- EVA ethylene-vinyl acetate
- the present invention therefore relates to a waterproofing membrane for roofs formed by
- the membrane being characterized in that the organic binder comprises from 15% to 95% by weight of a thermoset polymer obtained from a formaldehyde-based resin and from 1 to 15% by weight of a copolymer of ethylene and vinyl acetate (EVA), these percentages being expressed relative to the total dry weight of the organic binder.
- a thermoset polymer obtained from a formaldehyde-based resin
- EVA vinyl acetate
- nonwoven mats of mineral fibers also called “non-woven” or “sails”
- non-woven also called “non-woven” or “sails”
- dry or wet methods can be manufactured according to known methods by dry or wet methods.
- molten mineral matter contained in an oven is fed to a set of dies from which filaments flow by gravity and are drawn by a gaseous fluid.
- the mineral filaments are harvested on a conveyor where they intermingle forming a mat.
- an organic binder is applied using a suitable device, usually by curtain deposition, and the excess organic binder is removed by suction at the opposite side.
- the mat then enters a device containing hot air whose temperature, of the order of 200 to 250 ° C, is adapted to remove the water and crosslink the organic binder in a very short time, of the order from ten seconds to 1 minute, then the bound mineral fiber mat is collected in the form of a coil.
- the mat is obtained from an aqueous dispersion of cut mineral fibers which is deposited by means of a forming head on a conveyor provided with perforations and the water is extracted through the conveyor through to a suction box.
- the cut mineral fibers remaining on the conveyor form a mat which is treated under the same conditions as those described for the dry process.
- the mineral fibers forming a nonwoven mat produced by wet processes typically have a length of between 20 and 150 mm, advantageously between 30 and 100 mm and in particular between 50 and 70 mm. Their diameter may vary to a large extent, for example between 5 and 30 ⁇ .
- the waterproofing membrane of the present invention When the waterproofing membrane of the present invention must withstand high mechanical stresses, it may be useful to reinforce the nonwoven mat by a network of mineral threads, in particular glass threads, preferably arranged parallel to each other. other. Each thread is composed of a multitude of very fine filaments. These mineral threads are generally deposited on the conveyor device of the mat in the direction of advancement of the mat and distributed over all or part of the width of the mat. They are preferably deposited between two layers of mineral fibers.
- the nonwoven mat therefore comprises mineral threads, in particular glass threads, arranged parallel to each other, and preferably in the machine direction, between two randomly arranged mineral fiber layers.
- the function of the organic binder is to bind the mineral fibers together and to give the mat containing them mechanical properties suitable for the desired use, in particular sufficient rigidity to be easily handled and mechanical strength. sufficient to receive the bituminous phase without tearing.
- the weight per unit area of the nonwoven mat of bound mineral fibers is advantageously between 20 and 500 g / m 2 , preferably between 25 and 350 g / m 2 , in particular between 30 and 150 g / m 2 .
- Its organic binder content is advantageously between 5 and 40% by weight, preferably between 10 and 35% by weight, in particular between 15 and 30% by weight. This organic binder content is equal to the difference between the dry weight of the non-woven mat before application of the binder and the dry weight of the bonded nonwoven mat, based on the dry weight of the bonded nonwoven mat.
- organic binder When the organic binder consists only of combustible organic components, this content of organic binder is identical to what is usually called in the technical field of glass textiles loss of ignition (LOI).
- the organic binder may however contain a certain fraction of mineral components, for example mineral particulate fillers. This fraction generally does not exceed 20% by weight of the organic binder. When the organic binder contains such a mineral filler its loss on ignition (LOI) will be lower than the organic binder content of the nonwoven mat of mineral fibers.
- LOI loss on ignition
- the organic binder of the nonwoven mineral fiber mat comprises of
- thermoset polymer obtained by crosslinking a formaldehyde-based resin is advantageously chosen from the group consisting of melamine-formaldehyde, urea-formaldehyde, phenol-formaldehyde resins or a mixture of such resins.
- the Applicant has obtained excellent results with a melamine-formaldehyde resin.
- the organic binder of the nonwoven mat further contains from 1 to 15% by weight, preferably from 2 to 12% by weight, and more preferably from 4 to 10% by weight of a copolymer of ethylene and acetate vinyl (EVA).
- EVA ethylene and acetate vinyl
- thermoset polymer and EVA contents indicated above are based on the total dry weight of the organic binder, the latter possibly comprising a mineral filler or another organic component.
- the organic binder therefore further comprises up to 75% by weight, based on the total dry weight of the binder, of a polysaccharide.
- the polysaccharide consists of a plurality of saccharide units preferably comprising more than 50% by weight of glucose units.
- the molar mass of the polysaccharide can vary to a large extent so as to include dextrins and starches, especially starches with a molar mass of at least 10 5 g / mol and up to 10 9 g / mol.
- the polysaccharide is preferably starch or a starch derivative, for example a starch ester such as acetylated starch, or a starch ether such as hydroxyalkylated starch.
- a starch ester such as acetylated starch
- a starch ether such as hydroxyalkylated starch.
- the polysaccharide content of the organic binder is preferably between 20 and 75% by weight, in particular between 50 and 70% by weight.
- the ethylene-vinyl acetate (EVA) copolymer usable in the present invention may be a thermoplastic copolymer or a thermosetting copolymer. It is preferably a thermosetting copolymer.
- the term "copolymer” embraces in this application polymers having two, three or more different comonomers.
- thermoplastic copolymers may be copolymers consisting exclusively of ethylene and vinyl acetate, or else copolymers formed mainly of ethylene and vinyl acetate and of a small fraction of one or more comonomers providing particular functionalities. eg better fire resistance (halogenated comonomers) or an ability to form stable dispersions in water (ionized or ionizable comonomers).
- thermosetting EVAs contain, in addition to the ethylene and vinyl acetate units, crosslinking comonomers such as N-methylolacrylamide or a mixture of N-methylolacrylamide and acrylamide.
- crosslinking comonomers such as N-methylolacrylamide or a mixture of N-methylolacrylamide and acrylamide.
- the thermosetting EVAs may also contain ionized, halogenated comonomers, etc. bringing specific properties.
- Thermosetting EVAs in the form of latices which can be used as binders of fibrous materials have been known for a long time and are described, inter alia, in applications EP1777241, EP1905878 and US Pat. No. 4,044,197. They are available on the market, for example under the denomination Vinnapas ® (Wacker).
- the formaldehyde-based resin generally in solution in water and EVA, generally in latex form, are simply mixed with each other and optionally with additional ingredients, such as polysaccharides, mineral fillers flame retardants, surfactants, rheology modifiers, antifoam agents.
- additional ingredients such as polysaccharides, mineral fillers flame retardants, surfactants, rheology modifiers, antifoam agents.
- the solids content of the aqueous binder composition is advantageously between about 5% and 40%, preferably between 7% and 25%.
- the aqueous binder composition is used for impregnating the raw nonwoven mat, for example by dipping, coating or spraying, and then the binder is dried and cured (cured) in an oven.
- the organic binder of the nonwoven mat preferably does not contain rosin or alkyd resin.
- bituminous phase is applied to the nonwoven mat bonded by any suitable technique, for example by softening or melting, by spraying (spray coating) a bitumen emulsion, or by immersion ( dip-coating) in a bath of molten bitumen or in an emulsion of bitumen.
- the applied bitumen composition may contain, in addition to the bitumen itself, additives such as oils and petroleum residues, polymers, especially thermoplastic elastomers such as styrene-butadiene-styrene (SBS) or thermoplastic polymers such as atactic polypropylene (APP), mineral stabilizing agents, anti-UV agents or antistatic agents. These additives may represent up to 15% by weight of the bitumen.
- additives such as oils and petroleum residues, polymers, especially thermoplastic elastomers such as styrene-butadiene-styrene (SBS) or thermoplastic polymers such as atactic polypropylene (APP), mineral stabilizing agents, anti-UV agents or antistatic agents.
- the bituminous composition is applied to the nonwoven mat in an amount such that the surface density of the bituminous phase is between 500 and 10,000 g / m 2 , preferably between 1000 and 7500 g / m 2 , in particular between 1500 and 6000 g / m 2 .
- Mineral granules may be applied to one side of the bituminous membrane of the present invention.
- the bituminous membrane of the present invention is preferably in the form of rolls which can be rolled on roofs, in particular horizontal flat roofs, and glued by heating.
- the waterproofing membrane of the present invention also includes shingles, i.e., smaller sized membranes cut from roll membranes.
- the present invention also relates to a method of manufacturing a waterproofing membrane as described above, comprising,
- an aqueous binder composition comprising a formaldehyde-based resin, preferably in dissolved form in water, and a latex of a copolymer of ethylene and vinyl acetate (EVA),
- a non-woven fiberglass mat is made wet.
- 5 g of cut glass fibers (diameter 13 ⁇ , length 18 mm) are dispersed in 25 liters of water containing 3.75 g of a surfactant (Aerosol C61 from Cytex), 62.5 g of a thickener (Tylose H 100000 YP2 from Shin-Etsu) and 0.87 g of an anti-foaming agent (Agitan 295 from Munzing).
- the dispersion of fibers is poured into a container whose bottom is provided with a sieve and the dispersion medium is removed by simple flow through the sieve.
- the glass fibers, evenly distributed on the sieve, are recovered in the form of a raw nonwoven mat.
- the raw nonwoven mat is immersed in a bath of organic binder in the form of latex.
- the solids content of the two binder baths is about 7.5% by weight.
- Table 1 shows the composition (in dry matter) of the binder bath according to the invention containing EVA and a comparison binder bath free of EVA.
- Vinnapas EN1024 (Wacker) After immersion, the impregnated mat is dried for one minute in a thermostatically controlled oven at 210 ° C.
- the binder content of the bonded nonwoven mat is 20% based on the weight of the bound mat.
- the nonwoven bonded mats obtained respectively with the comparative binder and with the binder according to the invention are immersed in a bituminous composition heated to 180 ° C, then removed and cooled to room temperature.
- the surface density of the bituminous phase is about 2000 g / m 2 .
- Tensile tensile strength (average value determined on ten cut strips 25 cm x 5 cm) is determined in accordance with ISO 9073-3: 1989. It is 210 ⁇ 28 N / 5cm for the membrane according to the invention (binder containing about 10% by weight of EVA) and 169 ⁇ 27 N / 5cm) for the comparative membrane containing no EVA. It is therefore found that, in the presence of EVA, the tensile strength of the bituminous membrane is improved by about 24%.
- a non-woven mat of glass fibers C reinforced by glass threads is dry formed.
- the reinforcing threads are deposited, parallel to each other at intervals of about 12 mm, in the machine direction (warp) on a first portion of mineral fibers forming a nonwoven mat.
- the assembly is then covered by a second portion of randomly arranged mineral fibers, so that the reinforcing son are sandwiched between two nonwoven mats of mineral fibers.
- This nonwoven web then receives a comparative binder composition or a binder composition according to the invention (see Table 2 below), deposited by curtain coating.
- the excess binder composition is removed by a suction device under the nonwoven fabric structure.
- the solids content by weight of the two binder compositions is about 22%.
- the nonwoven web impregnated with the binder composition is then transported at a speed of 125 m / minute through a 50 m long oven, heated to a temperature of 260 ° C at the inlet and 180 ° C at the exit.
- the bonded nonwoven mat is rolled up. Its binder content is 28% expressed relative to the total weight of the bonded mat.
- the nonwoven bonded mats obtained respectively with the comparative binder and with the binder according to the invention are immersed in a bituminous composition heated to 180 ° C, then removed and cooled to room temperature.
- Table 3 shows the basis weight and tensile strength, determined in accordance with ISO 9073-3: 1989 according to a direction perpendicular to the reinforcing threads (average value over ten samples of 5 cm x 25 cm) of bonded mats and bituminous membranes made therefrom.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Nonwoven Fabrics (AREA)
- Laminated Bodies (AREA)
- Sealing Material Composition (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1750590A FR3062125B1 (fr) | 2017-01-25 | 2017-01-25 | Membranes bitumineuses d'etancheite pour toiture |
PCT/FR2018/050150 WO2018138429A1 (fr) | 2017-01-25 | 2018-01-22 | Membranes bitumineuses d'étanchéité pour toiture |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3574140A1 true EP3574140A1 (fr) | 2019-12-04 |
Family
ID=58707719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18704053.0A Withdrawn EP3574140A1 (fr) | 2017-01-25 | 2018-01-22 | Membranes bitumineuses d'étanchéité pour toiture |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3574140A1 (fr) |
FR (1) | FR3062125B1 (fr) |
WO (1) | WO2018138429A1 (fr) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4044197A (en) | 1975-03-21 | 1977-08-23 | Wacker-Chemie Gmbh | Thermally self-cross-linkable ethylene/vinyl acetate copolymers |
US6993876B1 (en) | 2000-01-18 | 2006-02-07 | Building Materials Investment Corporation | Asphalt roofing composite including adhesion modifier-treated glass fiber mat |
US7649067B2 (en) | 2005-10-19 | 2010-01-19 | Wacker Polymers, L.P. | Process of making a vinyl ester based polymer latex composition |
US7485590B2 (en) | 2006-09-29 | 2009-02-03 | Wacker Chemical Corporation | Self-crosslinking vinyl acetate-ethylene polymeric binders for nonwoven webs |
FR2912427B1 (fr) * | 2007-02-14 | 2009-12-11 | Soprema | Procede de fabrication d'une armature de renfort et d'une membrane d'etancheite comprenant une telle armature et produits obtenus. |
FR3023283A1 (fr) * | 2014-07-04 | 2016-01-08 | Saint Gobain Adfors | Mat de fibres minerales et produits bitumes incorporant ledit mat. |
-
2017
- 2017-01-25 FR FR1750590A patent/FR3062125B1/fr active Active
-
2018
- 2018-01-22 EP EP18704053.0A patent/EP3574140A1/fr not_active Withdrawn
- 2018-01-22 WO PCT/FR2018/050150 patent/WO2018138429A1/fr unknown
Also Published As
Publication number | Publication date |
---|---|
FR3062125A1 (fr) | 2018-07-27 |
FR3062125B1 (fr) | 2019-03-22 |
WO2018138429A1 (fr) | 2018-08-02 |
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