WO1987001715A1 - Self-adhesive armature tape for improving the resistance to cracking of a flexible thick coating applied to a support comprising joints and/or cracks and method for making such a coating reinforced by said tape - Google Patents

Self-adhesive armature tape for improving the resistance to cracking of a flexible thick coating applied to a support comprising joints and/or cracks and method for making such a coating reinforced by said tape Download PDF

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Publication number
WO1987001715A1
WO1987001715A1 PCT/FR1986/000315 FR8600315W WO8701715A1 WO 1987001715 A1 WO1987001715 A1 WO 1987001715A1 FR 8600315 W FR8600315 W FR 8600315W WO 8701715 A1 WO8701715 A1 WO 8701715A1
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WO
WIPO (PCT)
Prior art keywords
strip
tape
self
coating
support
Prior art date
Application number
PCT/FR1986/000315
Other languages
French (fr)
Inventor
René BRIAND
Gérard Blanc
Original Assignee
La Seigneurie
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 La Seigneurie filed Critical La Seigneurie
Publication of WO1987001715A1 publication Critical patent/WO1987001715A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]

Definitions

  • the subject of the invention is a self-adhesive reinforcing strip which can be used to improve the resistance to cracking of a flexible thick coating applied to a support, comprising joints and / or cracks. It also relates to the process for producing such a coating reinforced by this strip.
  • a thick flexible coating on a support, and in particular on a wall, comprising joints and / or cracks is generally done by incorporating into the coating, at the joints and / or cracks, a reinforcement which covers them and which allows the coating to better resist cracking due to variations in the opening of these joints and / or cracks, whatever the cause.
  • this strip may include a self-adhesive coating in full on one of its faces or a self-adhesive tape. adhesive, said release tape, placed in the center of the strip along the longitudinal axis of the latter.
  • the strip used as reinforcement must have a sufficiently open structure so that the self-adhesive coating which it wears does not form a continuous film preventing the passage of the coating through the strip to the support.
  • the adhesive present on the strip is not sufficient to impart satisfactory adhesion and holding characteristics. in time to the reinforced coating covering the joints or cracks and it is the coating applied to the strip which, penetrating through the latter to the support, makes it possible to obtain these adhesion and resistance characteristics over time.
  • the reinforcing strip is temporarily glued to the support only on its central part and therefore remains floating on its two sides, which does not facilitate the subsequent application of the coating.
  • the invention provides a self-adhesive synthetic nonwoven strip in full on one side, which can be used as a reinforcement at the joints or cracks present on a support and conduit, when applying a flexible thick coating on said support, on obtaining a reinforced coating at said joints or cracks, which has satisfactory characteristics of adhesion to the support and. held over time.
  • the self-adhesive reinforcing strip according to the invention is of the type consisting of a strip of synthetic material having one side coated with a self-adhesive product, said side being covered over its entire width with a protective film that is little or not adherent to the self-adhesive product and which can be easily removed at the time of use of the strip and it is characterized in that the synthetic material which constitutes it is a nonwoven and in that the self-adhesive product coating one side of the strip is distributed on this side in the form of non-contiguous zones.
  • the reinforcing strip thus defined can be easily positioned on the joints or cracks of the support by simple pressure before application of the thick flexible coating on said support.
  • This reinforcement strip also remains perfectly permeable to the coating applied to it as a result of the distribution of the self-adhesive product in non-contiguous zones and therefore the final bonding to the support is ensured by complete impregnation through said strip by the coating. without the use of a third leveling product.
  • the reinforcing strip according to the invention comprises an impermeable tape, the width of which is less than that of said strip and which is glued to the face of the strip coated with the self-adhesive product so that that the longitudinal axis of the tape substantially coincides with the longitudinal axis of the strip, the free face of said tape being adhesive or not.
  • a tape known as a de-idarization tape, makes it possible both to improve the cracking resistance of the coating reinforced by the reinforcing strip by distributing the dimensional variations over a width greater than that of the joint or of the crack and to overcome the problems of rising in the flexible thick coating of plasticizers coming from sealants put in place at the joints.
  • the nonwoven constituting the strip can be any of the known nonwovens and for example a nonwoven obtained from fibers or fibrils of a polymer such as polyester, polyamide, polyolefin such as polypropylene and polyethylene.
  • the width and thickness of the nonwoven web can vary quite widely. Satisfactory results are obtained for example when the width of the strip is between 5 and 25 cm and its thickness corresponds to a grammage of the nonwoven between 20 g / m 2 and 50 g / m 2 , these values being given as not limiting.
  • the distribution of the self-adhesive product in the form of non-contiguous zones on one of the faces of the nonwoven strip is preferably a distribution of non-contiguous droplets obtained by spraying on said face a dispersion of the self-adhesive product. using any spraying device capable of producing the desired dispersion of non-joining droplets.
  • the self-adhesive product that is used to form the non-contiguous adhesive areas or droplets can be chosen from the various self-adhesive products used to produce the self-adhesive reinforcing strips.
  • These self-adhesive products are generally based on one or more polymers such as acrylic polymers and in particular polymers or copolymers of acrylic or methacrylic esters, copolymers of styrene and butadiene, copolymers of olefins and of vinyl monomers such as copolymers of ethylene and vinyl acetate.
  • polymers such as acrylic polymers and in particular polymers or copolymers of acrylic or methacrylic esters, copolymers of styrene and butadiene, copolymers of olefins and of vinyl monomers such as copolymers of ethylene and vinyl acetate.
  • the protective film which covers the self-adhesive product present on the nonwoven strip, may be of any material capable of forming a film which is little or not adherent to the self-adhesive product and sufficiently resistant to ensure effective protection of said self-adhesive product adhesive during storage of the reinforcing tape or during handling before use.
  • the surface of the protective film which comes into contact with the self-adhesive product, can receive a layer of a non-stick product such as a silicone.
  • the protective film is made of a thermopiastic polymer and in particular of a polymer such as polyethylene or polypropylene or else of a paper provided with a non-stick coating such as silicone paper.
  • the thickness of the protective film is not critical and may for example be between 10 and 250 microns, a thickness between 50 and 200 microns generally giving satisfactory results.
  • the release tape which may include the reinforcing strip, may be of any material, expanded or not, capable of providing a tape having the desired characteristics of elasticity and tensile strength.
  • the release tape is made of a polymer material such as polyvinyl chloride, polyester, polyurethane, polyolefin such as polyethylene or polypropylene.
  • the width of said tape can vary quite widely depending on the width of the joints or cracks to be covered. In most cases a tape width of between 0.5 and 5 cm is sufficient. As for the thickness of such a ribbon, it can range, for example, from 0.02 to 3 mm and preferably from 0.05 to 1 mm.
  • the release tape is fixed by bonding to the face of the nonwoven strip carrying the self-adhesive product in non-contiguous areas or droplets, using any type of adhesive giving a nonwoven bond / tape having the desired cohesion.
  • a self-adhesive product of the same type as that used to produce the non-contiguous areas or droplets can be used as an adhesive.
  • the free face of the release tape may be non-adhesive or may be coated with a layer of a self-adhesive in continuous film or in non-contiguous areas or droplets, this self-adhesive may be of a any type and for example of a type comparable to the self-adhesive product used to form the non-contiguous areas or droplets.
  • the protective film also covers said tape.
  • a method is used in which positions the face of the reinforcement strip coated with the self-adhesive product, after having removed the protective film covering it, on the surface of the support comprising the seal or the crack, after having possibly closed the said seal or the said crack, so that the reinforcement strip is centered on the joint or the crack and the reinforcement strip thus positioned is provisionally glued on the said surface of the support by pressure, then the thick flexible coating is applied in full on the support y included on the reinforcement tape temporarily glued to the support.
  • the reinforcing strip is permanently bonded to the support by passing the flexible thick coating through the nonwoven between the non-contiguous areas or droplets of self-adhesive product.
  • the width of the said strip is chosen so that after positioning the reinforcing strip on the joint or the crack to be treated, the decoupling tape overflows on both sides and d other of said joint or said crack.
  • the flexible thick coating usable in association with the reinforcing strip according to the invention may be of the type of thick plastic coatings or of the type of additional waterproofing, waterproofing or waterproofing coatings, these coatings of the one or the other type being in particular acrylic coatings used in aqueous dispersion.
  • the thick flexible coating is applied with a roller or a metal trowel as is well known in the art. In the case of application of a thick plastic coating, the final aesthetic appearance can be given by passing a roller allowing the desired structure to be imparted to the still fresh product.
  • Sealing of joints or cracks, prior to positioning the reinforcing strip on them, can be carried out using any product usually used for this purpose and in particular to products of the type of plastic sealants or elastomers. If necessary, in addition to sealing the joints or cracks present on the support, it is possible to make a leveling of said support by means of any product provided for this use, then position the reinforcing strip on the leveling layer at the level of the joint or crack and finally apply the thick flexible coating in full on the leveling layer including the reinforcing tape positioned on this layer.
  • the reinforcement strip according to the invention is suitable for covering the joints or cracks present on various supports already coated or not with paint products, in particular concretes, coatings or mortars based on hydraulic binders, products of asbestos-cement type, plywood, when applying a flexible thick coating on these supports.
  • a reinforcing strip according to the invention was produced from a strip of polyester nonwoven having a width of 10 cm and a thickness corresponding to a grammage of 30 g / m 2 .
  • This strip of nonwoven was coated, on one of its faces, with a self-adhesive acrylic adhesive in the form of a spray of non-contiguous droplets.
  • a polyester tape 2 cm wide and 0.3 mm thick was then glued so that the longitudinal axis of this tape substantially coincides with the longitudinal axis of the strip. of nonwoven, the free face of said tape not being adhesive.
  • a protective polyethylene film having a thickness of 0.1 mm was finally placed on the side coated with adhesive so as to completely cover said side including the polyester tape.
  • a reinforcing strip according to the invention was produced from a strip of polyester nonwoven having a width of 10 cm and a thickness corresponding to a grammage of 30 g / m 2 .
  • a polyester strip 2 cm wide and 0.3 mm thick was pasted so that the longitudinal axis of this strip substantially coincides with the longitudinal axis of the nonwoven strip , the free face of said tape being adhesive and covered by a non-adherent film.
  • the strip thus produced was coated on the face with the tape, still covered by its non-adherent film, with a self-adhesive acrylic glue in the form of a spray of non-contiguous droplets.
  • a reinforcing strip was produced which differed from the reinforcing strip of test A by the fact that the self-adhesive acrylic adhesive was deposited by coating on the face of the strip in nonwoven intended to receive it and formed a continuous self-adhesive layer.
  • a flexible thick acrylic coating was applied to a concrete support, certain parts of which were coated with samples of one or other of the aforementioned reinforcing strips, glued to the support by pressure, and the adhesion was determined. coating on the support after a drying period of 28 days, by measuring the force necessary to tear off the coating. The tests were carried out under the conditions of the French standard NFT 30700.
  • the adhesion of the coating applied to the reinforcement strip according to the invention (tests A and B) coating the support has a value substantially identical to that of the coating applied directly to the support in the running part. This results from the fact that the self-adhesive droplets which are not contiguous, which form the self-adhesive layer of the reinforcing strip according to the invention, do not block the penetration of the coating through the nonwoven to the support.
  • adhesion of the coating applied to the reinforcing strip according to the comparative test coating the support is very much lower than that of the coating applied directly to the support in the running part. This is due to the fact that, in this comparative test, the self-adhesive layer of the reinforcing strip is formed by coating and is in the form of a continuous film, which prevents penetration of the coating through the strip of reinforcement to the support.
  • the invention is not limited to the embodiments which have just been described, but on the contrary encompasses the various variants which the specialist can define without departing from his mind.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Adhesive Tapes (AREA)
  • Laminated Bodies (AREA)

Abstract

The disclosed reinforcement tape is comprised of a band of non-woven synthetic material presenting a face coated with a self-adhesive product which is distributed on said face in the form of non jointing areas and more particularly in the form of non-jointing drops, said face being covered with a peelable film which is only slightly or not adherent to the self-adhesive product. The method for achieving the coating armed by the band or tape comprises the positioning of the self-adhesive face of the tape, after removal from the protection film, on the surface of the support presenting the joints or cracks, and sticking the thus positioned tape to the support by pressure, and then applying the thick flexible coating to the support including the armature tape.

Description

BANDE D'ARMATURE AUTO-ADHESIVE POUR AMELIORER LA RESISTANCE A LA FISSURATION D'UN REVETEMENT EPAIS SOUPLE APPLIQUE SUR UN SUPPORT COMPORTANT DES JOINTS ET/OU DES FISSURES ET PROCEDE DE REALISATION D'UN TEL REVETEMENT ARME PAR CETTE BANDE.SELF-ADHESIVE REINFORCEMENT STRIP FOR IMPROVING THE CRACKING RESISTANCE OF A FLEXIBLE THICK COATING APPLIED ON A SUPPORT COMPRISING JOINTS AND / OR CRACKS AND METHOD FOR PRODUCING SUCH A WEAPONED COATING WITH THIS STRIP.
L'invention a pour objet une bande d'armature auto-adhésive utilisable pour améliorer la résistance à la fissuration d'un revêtement épais souple appliqué sur un support, comportant des joints et/ou des fissures. Elle concerne encore le procédé de réalisation d'un tel revêtement armé par cette bande.The subject of the invention is a self-adhesive reinforcing strip which can be used to improve the resistance to cracking of a flexible thick coating applied to a support, comprising joints and / or cracks. It also relates to the process for producing such a coating reinforced by this strip.
L'application d'un revêtement épais souple sur un support, et notamment sur une paroi, comportant des joints et/ou des fissures se fait généralement en incorporant au revêtement, au niveau des joints et/ou fissures, une armature qui les recouvre et qui permet au revêtement de mieux résister à la fissuration due aux variations d'ouverture de ces joints et/ou fissures, quelle qu'en soit la cause.The application of a thick flexible coating on a support, and in particular on a wall, comprising joints and / or cracks is generally done by incorporating into the coating, at the joints and / or cracks, a reinforcement which covers them and which allows the coating to better resist cracking due to variations in the opening of these joints and / or cracks, whatever the cause.
Différents types d'armatures, se présentant sous la forme de bandes, sont utilisés à cet effet et notamment des tissus ou mats de verre ou encore des calicots tricotés ou tissés. Pour permettre, avant application du revêtement épais, un positionnement aisé de la bande d'armature sur le joint ou sur la fissure, cette bande peut comporter une enduction auto-adhésive en plein sur l'une de ses faces ou bien un ruban auto-adhésif, dit ruban de désolidarisation, disposé au centre de la bande suivant l'axe longitudinal de cette dernière.Different types of reinforcement, in the form of strips, are used for this purpose and in particular fabrics or glass mats or knitted or woven banners. To allow, before application of the thick coating, easy positioning of the reinforcement strip on the joint or on the crack, this strip may include a self-adhesive coating in full on one of its faces or a self-adhesive tape. adhesive, said release tape, placed in the center of the strip along the longitudinal axis of the latter.
Dans le premier cas la bande utilisée comme armature doit avoir une structure suffisamment ouverte pour que l'enduction auto-adhésive qu'elle porte ne forme pas un film continu empêchant le passage du revêtement à travers la bande jusqu'au support. En effet l'adhésif présent sur la bande ne suffit pas pour conférer des caractéristiques satisfaisantes d'adhérence et de tenue dans le temps au revêtement armé couvrant les joints ou les fissures et c'est le revêtement appliqué sur la bande qui en pénétrant à travers cette dernière jusqu'au support permet d'obtenir ces caractéristiques d'adhérence et de tenue dans le temps.In the first case, the strip used as reinforcement must have a sufficiently open structure so that the self-adhesive coating which it wears does not form a continuous film preventing the passage of the coating through the strip to the support. In fact, the adhesive present on the strip is not sufficient to impart satisfactory adhesion and holding characteristics. in time to the reinforced coating covering the joints or cracks and it is the coating applied to the strip which, penetrating through the latter to the support, makes it possible to obtain these adhesion and resistance characteristics over time.
Dans une telle mise en oeuvre, on ne peut donc faire appel qu'à certains tissus de verre ou calicots à mailles suffisamment ouvertes pour constituer les bandes d'armature et l'on doit donc exclure l'utilisation de bandes d'armature en non tissé synthétique car ces dernières, après avoir reçu une enduction auto-adhésive sur une face, ne sont plus suffisamment perméables au revêtement appliqué sur elles par la suite.In such an implementation, it is therefore only possible to use certain glass fabrics or calicoes with mesh open enough to constitute the reinforcing strips and the use of reinforcing strips must therefore be excluded. synthetic woven because the latter, after having received a self-adhesive coating on one side, are no longer sufficiently permeable to the coating applied to them thereafter.
Dans le deuxième cas, la bande d'armature n'est collée provisoirement au support que sur sa partie centrale et reste donc flottante sur ses deux côtés, ce qui ne facilite pas l'application subséquente du revêtement.In the second case, the reinforcing strip is temporarily glued to the support only on its central part and therefore remains floating on its two sides, which does not facilitate the subsequent application of the coating.
L'invention propose une bande en non tissé synthétique auto-adhésive en plein sur une face, qui est utilisable comme armature au droit de joints ou de fissures présents sur un support et conduit, lors de l'application d'un revêtement épais souple sur ledit support, à l'obtention d'un revêtement armé au niveau desdits joints ou fissures, qui présente des caractéristiques satisfaisantes d'adhérence au support et de. tenue dans le temps.The invention provides a self-adhesive synthetic nonwoven strip in full on one side, which can be used as a reinforcement at the joints or cracks present on a support and conduit, when applying a flexible thick coating on said support, on obtaining a reinforced coating at said joints or cracks, which has satisfactory characteristics of adhesion to the support and. held over time.
La bande d'armature auto-adhésive suivant l'invention est du type constitué par une bande en un matériau synthétique présentan une face revêtue d'un produit auto-adhésif, ladite face étant recouverte sur toute sa largeur d'un film protecteur peu ou pas adhérent au produit auto-adhésif et que l'on peut retirer aisément au moment de 1'emploi de la bande et elle se caractérise en ce que le matériau synthétique qui la constitue est un non tissé et en ce que le produit auto-adhésif revêtant une face de la bande est distribué sur cette face sous la forme de zones non jointives. La bande d'armature ainsi définie peut être positionnée aisément sur les joints ou fissures du support par simple pression avant application du revêtement épais souple sur ledit support. Cette bande d'armature reste en outre parfaitement perméable au revêtement appliqué sur elle par suite de la distribution du produit auto-adhésif en zones non jointives et de ce fait le collage définitif au support est assuré par imprégnation complète à travers ladite bande par le revêtement sans utilisation d'un tiers produit de marouflage.The self-adhesive reinforcing strip according to the invention is of the type consisting of a strip of synthetic material having one side coated with a self-adhesive product, said side being covered over its entire width with a protective film that is little or not adherent to the self-adhesive product and which can be easily removed at the time of use of the strip and it is characterized in that the synthetic material which constitutes it is a nonwoven and in that the self-adhesive product coating one side of the strip is distributed on this side in the form of non-contiguous zones. The reinforcing strip thus defined can be easily positioned on the joints or cracks of the support by simple pressure before application of the thick flexible coating on said support. This reinforcement strip also remains perfectly permeable to the coating applied to it as a result of the distribution of the self-adhesive product in non-contiguous zones and therefore the final bonding to the support is ensured by complete impregnation through said strip by the coating. without the use of a third leveling product.
Dans une forme de réalisation particulière, la bande d'armature suivant 1'invention comporte un ruban imperméable, dont la largeur est inférieure à celle de ladite bande et qui est collé sur la face de la bande revêtue du produit auto-adhésif de telle sorte que l'axe longitudinal du ruban coïncide sensiblement avec l'axe longitudinal de la bande, la face libre dudit ruban étant adhésive ou non. Un tel ruban, dit ruban de déso idarisation, permet à la fois d'améliorer la résistance à la fissuration du revêtement armé par la bande d'armature en répartissant les variations di ensionnelles sur une largeur supérieure à celle du joint ou de la fissure et de pallier les problèmes de remontée dans le revêtement épais souple des plastifiants provenant des mastics d'etancheité mis en oeuvre au droit des joints.In a particular embodiment, the reinforcing strip according to the invention comprises an impermeable tape, the width of which is less than that of said strip and which is glued to the face of the strip coated with the self-adhesive product so that that the longitudinal axis of the tape substantially coincides with the longitudinal axis of the strip, the free face of said tape being adhesive or not. Such a tape, known as a de-idarization tape, makes it possible both to improve the cracking resistance of the coating reinforced by the reinforcing strip by distributing the dimensional variations over a width greater than that of the joint or of the crack and to overcome the problems of rising in the flexible thick coating of plasticizers coming from sealants put in place at the joints.
Le non tissé constituant la bande peut être l'un quelconque des non tissés connus et par exemple un non tissé obtenu à partir de fibres ou fibrilles d'un polymère tel que polyester, polyamide, polyolëfine comme polypropylene et polyethylene. La largeur et l'épaisseur de la bande en non tissé peuvent varier assez largement. On obtient par exemple des résultats satisfaisants lorsque la largeur de la bande est comprise entre 5 et 25 cm et son épaisseur correspond à un grammage du non tissé compris entre 20 g/m2 et 50 g/m2, ces valeurs étant données à titre non limitatif. La distribution du produit auto-adhésif sous la forme de zones non jointives sur l'une des faces de la bande en non tissé est de préférence une distribution de gouttelettes non jointives obtenue par pulvérisation sur ladite face d'une dispersion du produit auto-adhésif en faisant appel à tout appareil de pulvérisation susceptible de produire la dispersion désirée de gouttelettes non jointives. Le produit auto-adhésif que l'on emploie pour former les zones ou les gouttelettes adhêsives non jointives peut être choisi parmi les divers produits auto-adhésifs utilisés pour produire les bandes d'armature auto-adhêsives. Ces produits auto-adhésifs sont généralement à base d'un ou plusieurs polymères tels que polymères acryliques et notamment polymères ou copolymeres d'esters acryliques ou méthacryliques, copolymeres de styrène et de butadiène, copolymeres d'oléfines et de monomères vinyliques comme les copolymeres d'éthylène et d'acétate de vinyle.The nonwoven constituting the strip can be any of the known nonwovens and for example a nonwoven obtained from fibers or fibrils of a polymer such as polyester, polyamide, polyolefin such as polypropylene and polyethylene. The width and thickness of the nonwoven web can vary quite widely. Satisfactory results are obtained for example when the width of the strip is between 5 and 25 cm and its thickness corresponds to a grammage of the nonwoven between 20 g / m 2 and 50 g / m 2 , these values being given as not limiting. The distribution of the self-adhesive product in the form of non-contiguous zones on one of the faces of the nonwoven strip is preferably a distribution of non-contiguous droplets obtained by spraying on said face a dispersion of the self-adhesive product. using any spraying device capable of producing the desired dispersion of non-joining droplets. The self-adhesive product that is used to form the non-contiguous adhesive areas or droplets can be chosen from the various self-adhesive products used to produce the self-adhesive reinforcing strips. These self-adhesive products are generally based on one or more polymers such as acrylic polymers and in particular polymers or copolymers of acrylic or methacrylic esters, copolymers of styrene and butadiene, copolymers of olefins and of vinyl monomers such as copolymers of ethylene and vinyl acetate.
Le film protecteur, qui recouvre le produit auto-adhésif présent sur la bande en non tissé, peut être en toute matière susceptible de former un film peu ou pas adhérent au produit auto-adhésif et suffisamment résistant pour assurer une protection efficace dudit produit auto-adhésif au cours du stockage de la bande d'armature ou des manipulations précédant son utilisation. Si besoin est, la surface du film protecteur, qui vient en contact avec le produit auto-adhésif, peut recevoir une couche d'un produit antiadhésif tel qu'un silicone. Avantageu¬ sement le film protecteur est en un polymère thermopiastique et notamment en un polymère tel que polyethylene ou polypropylene ou encore en un papier pourvu d'un revêtement antiadhésif tel qu'un papier silicone.The protective film, which covers the self-adhesive product present on the nonwoven strip, may be of any material capable of forming a film which is little or not adherent to the self-adhesive product and sufficiently resistant to ensure effective protection of said self-adhesive product adhesive during storage of the reinforcing tape or during handling before use. If necessary, the surface of the protective film, which comes into contact with the self-adhesive product, can receive a layer of a non-stick product such as a silicone. Advantageously, the protective film is made of a thermopiastic polymer and in particular of a polymer such as polyethylene or polypropylene or else of a paper provided with a non-stick coating such as silicone paper.
L'épaisseur du film protecteur n'est pas critique et peut être par exemple comprise entre 10 et 250 microns, une épaisseur comprise entre 50 et 200 microns donnant généralement des résultats satisfaisants. Le ruban de désolidarisation, que peut comporter éventuellement la bande d'armature, peut être en toute matière, expansée ou non, apte à fournir un ruban ayant les caractéristiques souhaitées d'élasticité et de résistance à la traction. Avantageusement le ruban de désolidarisation est en une matière polymère telle que polychlorure de vinyle, polyester, polyuréthanne, polyoléfine comme polyethylene ou polypropylene.The thickness of the protective film is not critical and may for example be between 10 and 250 microns, a thickness between 50 and 200 microns generally giving satisfactory results. The release tape, which may include the reinforcing strip, may be of any material, expanded or not, capable of providing a tape having the desired characteristics of elasticity and tensile strength. Advantageously, the release tape is made of a polymer material such as polyvinyl chloride, polyester, polyurethane, polyolefin such as polyethylene or polypropylene.
Sous réserve d'être inférieure à celle de la bande en non tissé à laquelle le ruban de désolidarisation est collé, la largeur dudit ruban peut varier assez largement suivant la largeur des joints ou des fissures à couvrir. Dans la plupart des cas une largeur de ruban comprise entre 0,5 et 5 cm s'avère suffisante. Quant à l'épaisseur d'un tel ruban elle peut aller par exemple de 0,02 à 3 mm et de préférence de 0,05 à 1 mm.Subject to being less than that of the nonwoven strip to which the release tape is bonded, the width of said tape can vary quite widely depending on the width of the joints or cracks to be covered. In most cases a tape width of between 0.5 and 5 cm is sufficient. As for the thickness of such a ribbon, it can range, for example, from 0.02 to 3 mm and preferably from 0.05 to 1 mm.
Le ruban de désolidarisation est fixé par collage à la face de la bande en non tissé portant le produit auto-adhésif en zones ou gouttelettes non jointives, en faisant appel à tout type d'adhésif donnant une liaison non tissé/ruban présentant la cohésion désirée. En particulier on peut utiliser à titre d'adhésif un produit auto-adhésif du même type que celui servant à produire les zones ou gouttelettes non jointives. Comme indiqué plus haut, la face libre du ruban de désolidarisation peut être non adhésive ou bien être revêtue d'une couche d'un auto-adhésif en film continu ou en zones ou gouttelettes non jointives, cet auto-adhésif pouvant être d'un type quelconque et par exemple d'un type comparable au produit auto-adhésif utilisé pour former les zones ou gouttelettes non jointives.The release tape is fixed by bonding to the face of the nonwoven strip carrying the self-adhesive product in non-contiguous areas or droplets, using any type of adhesive giving a nonwoven bond / tape having the desired cohesion. . In particular, a self-adhesive product of the same type as that used to produce the non-contiguous areas or droplets can be used as an adhesive. As indicated above, the free face of the release tape may be non-adhesive or may be coated with a layer of a self-adhesive in continuous film or in non-contiguous areas or droplets, this self-adhesive may be of a any type and for example of a type comparable to the self-adhesive product used to form the non-contiguous areas or droplets.
Lorsque la bande d'armature comporte un ruban de désolidarisation, le film protecteur recouvre également ledit ruban. Pour appliquer un revêtement épais souple sur un support comportant des joints et/ou des fissures en utilisant la bande d'armature auto-adhésive suivant l'invention, on fait appel à un procédé dans lequel on positionne la face de la bande d'armature revêtue du produit auto-adhésif, après avoir retiré le film protecteur la recouvrant, sur la surface du support comportant le joint ou la fissure, après avoir éventuellement obturé ledit joint ou ladite fissure, de telle sorte que la bande d'armature soit centrée sur le joint ou la fissure et l'on colle provisoirement la bande d'armature ainsi positionnée 'sur la dite surface du support par pression, puis on applique le revêtement épais souple en plein sur le support y compris sur la bande d'armature collée provisoirement au support.When the reinforcing strip includes a release tape, the protective film also covers said tape. To apply a thick flexible coating on a support having joints and / or cracks using the self-adhesive reinforcing tape according to the invention, a method is used in which positions the face of the reinforcement strip coated with the self-adhesive product, after having removed the protective film covering it, on the surface of the support comprising the seal or the crack, after having possibly closed the said seal or the said crack, so that the reinforcement strip is centered on the joint or the crack and the reinforcement strip thus positioned is provisionally glued on the said surface of the support by pressure, then the thick flexible coating is applied in full on the support y included on the reinforcement tape temporarily glued to the support.
La bande d'armature est collée définitivement au support par passage du revêtement épais souple à travers le non tissé entre les zones ou gouttelettes non jointives de produit auto-adhésif.The reinforcing strip is permanently bonded to the support by passing the flexible thick coating through the nonwoven between the non-contiguous areas or droplets of self-adhesive product.
Lorsque la bande d'armature comporte un ruban de désolidarisation, la largeur dudit ruban est choisie de telle sorte qu'après positionnement .de la bande d'armature sur le joint ou la fissure à traiter, le ruban de désolidarisation déborde de part et d'autre dudit joint ou de ladite fissure.When the reinforcing strip comprises a decoupling tape, the width of the said strip is chosen so that after positioning the reinforcing strip on the joint or the crack to be treated, the decoupling tape overflows on both sides and d other of said joint or said crack.
Le revêtement épais souple utilisable en association avec la bande d'armature suivant l'invention peut être du type des revêtements plastiques épais ou encore du type des revêtements de complément d'imperméabilisation, d'imperméabilisation ou d'etancheité, ces revêtements de l'un ou l'autre type étant notamment des revêtements acryliques utilisés en dispersion aqueuse. Le revêtement épais souple est appliqué au rouleau ou à la lisseuse métallique comme il est bien connu dans l'art. Dans le cas d'application d'un revêtement plastique épais, l'aspect esthétique final peut être donné par passage d'un rouleau permettant de conférer la structure souhaitée au produit encore frais.The flexible thick coating usable in association with the reinforcing strip according to the invention may be of the type of thick plastic coatings or of the type of additional waterproofing, waterproofing or waterproofing coatings, these coatings of the one or the other type being in particular acrylic coatings used in aqueous dispersion. The thick flexible coating is applied with a roller or a metal trowel as is well known in the art. In the case of application of a thick plastic coating, the final aesthetic appearance can be given by passing a roller allowing the desired structure to be imparted to the still fresh product.
L'obturation des joints ou fissures, préalablement au positionnement de la bande d'armature sur ces derniers, peut être effectuée en faisant appel à tout produit habituellement utilisé dans ce but et en particulier à des produits du type des mastics plastiques ou élastomères. Si besoin est, en plus d'obturer les joints ou fissures présents sur le support, on peut effectuer un ragreage dudit support au moyen de tout produit prévu à cet usage, puis positionner la bande d'armature sur la couche de ragreage au droit du joint ou de la fissure et enfin appliquer le revêtement épais souple en plein sur la couche de ragreage y compris sur la bande d'armature positionnée sur cette couche.Sealing of joints or cracks, prior to positioning the reinforcing strip on them, can be carried out using any product usually used for this purpose and in particular to products of the type of plastic sealants or elastomers. If necessary, in addition to sealing the joints or cracks present on the support, it is possible to make a leveling of said support by means of any product provided for this use, then position the reinforcing strip on the leveling layer at the level of the joint or crack and finally apply the thick flexible coating in full on the leveling layer including the reinforcing tape positioned on this layer.
Comme indiqué plus haut, la bande d'armature suivant l'invention convient pour couvrir les joints ou fissures présents sur des supports divers déjà revêtus ou non par des produits de peinture, notamment bétons, enduits ou mortiers à base de liants hydrauliques, produits du type amiante-ciment, contreplaqués, lors de l'application d'un revêtement épais souple sur ces supports.As indicated above, the reinforcement strip according to the invention is suitable for covering the joints or cracks present on various supports already coated or not with paint products, in particular concretes, coatings or mortars based on hydraulic binders, products of asbestos-cement type, plywood, when applying a flexible thick coating on these supports.
L'invention est illustrée par l'exemple suivant donné à titre non limitatif. EXEMPLEThe invention is illustrated by the following example given without limitation. EXAMPLE
. Essai A :. Test A:
On réalisait une bande d'armature suivant l'invention à partir d'une bande en un non tissé de polyester ayant une largeur de 10 cm et une épaisseur correspondant à un grammage de 30 g/m2. Cette bande de non tissé était revêtue, sur l'une de ses faces, d'une colle acrylique auto-adhésive se présentant sous la forme d'une pulvérisation de gouttelettes non jointives. Sur ladite face revêtue d'adhésif, on collait alors un ruban de polyester de 2 cm de largeur et de 0,3 mm d'épaisseur de telle sorte que l'axe longitudinal de ce ruban coincide sensiblement avec l'axe longitudinal de la bande de non tissé, la face libre dudit ruban n'étant pas adhésive. Un film protecteur de polyethylene ayant 0,1 mm d'épaisseur était enfin disposé sur la face revêtue d'adhésif de manière à recouvrir complètement ladite face y compris le ruban de polyester. Essai B :A reinforcing strip according to the invention was produced from a strip of polyester nonwoven having a width of 10 cm and a thickness corresponding to a grammage of 30 g / m 2 . This strip of nonwoven was coated, on one of its faces, with a self-adhesive acrylic adhesive in the form of a spray of non-contiguous droplets. On said face coated with adhesive, a polyester tape 2 cm wide and 0.3 mm thick was then glued so that the longitudinal axis of this tape substantially coincides with the longitudinal axis of the strip. of nonwoven, the free face of said tape not being adhesive. A protective polyethylene film having a thickness of 0.1 mm was finally placed on the side coated with adhesive so as to completely cover said side including the polyester tape. Test B:
On réalisait une bande d'armature suivant l'invention à partir d'une bande en un non tissé de polyester ayant une largeur de 10 cm et une épaisseur correspondant à un grammage de 30 g/m2.A reinforcing strip according to the invention was produced from a strip of polyester nonwoven having a width of 10 cm and a thickness corresponding to a grammage of 30 g / m 2 .
Sur une face de ladite bande on collait un ruban de polyester de 2 cm de largeur et de 0,3 mm d'épaisseur de telle sorte que l'axe longitudinal de ce ruban coincide sensiblement avec l'axe longitudinal de la bande de non tissé, la face libre dudit ruban étant ad ésive et recouverte par une pellicule non adhérente.On one side of said strip a polyester strip 2 cm wide and 0.3 mm thick was pasted so that the longitudinal axis of this strip substantially coincides with the longitudinal axis of the nonwoven strip , the free face of said tape being adhesive and covered by a non-adherent film.
La bande ainsi réalisée était revêtue sur la face présentant le ruban toujours recouvert par sa pellicule non adhérente, d'une colle acrylique auto-adhésive se présentant sous la forme d'une pulvérisation de gouttelettes non jointives.The strip thus produced was coated on the face with the tape, still covered by its non-adherent film, with a self-adhesive acrylic glue in the form of a spray of non-contiguous droplets.
Un film protecteur de papier silicone ayant 0,15 mm d'épaisseur était enfin disposé sur la face revêtue d'adhési± de manière à recouvrir complètement ladite face y compris le ruban de polyester. Essai C :A protective film of silicone paper having 0.15 mm thickness was finally placed on the side coated with adhesive so as to completely cover said side including the polyester tape. Test C:
Dans cet essai, servant d'essai comparatif, on réalisait une bande d'armature différant de la bande d'armature de l'essai A par le fait que la colle acrylique auto-adhésive était déposée par enduction sur la face de la bande en non tissé destinée à la recevoir et formait une couche auto-adhésive continue. On appliquait un revêtement acrylique épais souple sur un support de béton dont certaines parties étaient revêtues d'échantillons de l'une ou l'autre des bandes d'armature précitées, collés au support par pression, et l'on déterminait l'adhérence du revêtement au support après une durée de séchage de 28 jours, par mesure de la force nécessaire pour arracher le revêtement. Les essais étaient réalisés dans les conditions de la norme française NFT 30700.In this test, serving as a comparative test, a reinforcing strip was produced which differed from the reinforcing strip of test A by the fact that the self-adhesive acrylic adhesive was deposited by coating on the face of the strip in nonwoven intended to receive it and formed a continuous self-adhesive layer. A flexible thick acrylic coating was applied to a concrete support, certain parts of which were coated with samples of one or other of the aforementioned reinforcing strips, glued to the support by pressure, and the adhesion was determined. coating on the support after a drying period of 28 days, by measuring the force necessary to tear off the coating. The tests were carried out under the conditions of the French standard NFT 30700.
Les résultats obtenus sont donnés dans le tableau ci-après : TABLEAUThe results obtained are given in the table below: BOARD
Figure imgf000011_0001
Figure imgf000011_0001
L'adhérence du revêtement appliqué sur la bande d'armature suivant l'invention (essais A et B) revêtant le support a une valeur sensiblement identique à celle du revêtement appliqué directement au support en partie courante. Ceci résulte du fait que les gouttelettes auto-adhésives non jointives, qui forment la couche auto adhésive de la bande d'armature suivant l'invention, ne bloquent pas la pénétration du revêtement à travers le non tissé jusqu'au support.The adhesion of the coating applied to the reinforcement strip according to the invention (tests A and B) coating the support has a value substantially identical to that of the coating applied directly to the support in the running part. This results from the fact that the self-adhesive droplets which are not contiguous, which form the self-adhesive layer of the reinforcing strip according to the invention, do not block the penetration of the coating through the nonwoven to the support.
Par contre 1•adhérence du revêtement appliqué sur la bande d'armature suivant l'essai comparatif revêtant le support est très nettement inférieure à celle du revêtement appliqué directement au support en partie courante. Ceci provient de ce que, dans cet essai comparatif, la couche auto-adhésive de la bande d'armature est formée par enduction et se présente sous la forme d'un film continu, qui empêche la pénétration du revêtement à travers la bande d'armature jusqu'au support. Bien entendu 1'invention ne se limite pas aux modes de réalisation qui viennent d'être décrits, mais elle en englobe au contraire les diverses variantes que peut définir le spécialiste sans s'écarter de son esprit. By cons 1 • adhesion of the coating applied to the reinforcing strip according to the comparative test coating the support is very much lower than that of the coating applied directly to the support in the running part. This is due to the fact that, in this comparative test, the self-adhesive layer of the reinforcing strip is formed by coating and is in the form of a continuous film, which prevents penetration of the coating through the strip of reinforcement to the support. Of course the invention is not limited to the embodiments which have just been described, but on the contrary encompasses the various variants which the specialist can define without departing from his mind.

Claims

REVENDICATIONS - Bande d'armature auto-adhésive pour améliorer la résistance à la fissuration d'un revêtement épais souple appliqué sur un support comportant des joints et/ou des fissures, cette bande étant constituée d'une bande en un matériau synthétique présentant une face revêtue d'un produit auto-adhésif, ladite face étant recouverte sur toute sa largeur d'un film protecteur peu ou pas adhérent au produit auto-adhésif et que l'on peut retirer aisément au moment de l'emploi de la bande d'armature, et se caractérisant en ce que la bande en matériau synthétique est une bande en non tisse et en ce que le produit auto-adhésif revêtant une face de la bande en non tissé est distribué sur cette face sous la forme de zones non jointives. - Bande d'armature suivant la revendication 1, caractérisée en ce que le produit auto-adhésif revêtant une face de la bande en non tissé est distribué sur cette face sous la forme de gouttelettes non jointives. - Bande d'armature suivant la revendication 2, caractérisée en ce que la distribution du produit auto-adhésif sous la forme de gouttelettes non jointives est réalisée par pulvérisation. - Bande d'armature suivant l'une des revendications 1 àCLAIMS - Self-adhesive reinforcing tape to improve the cracking resistance of a flexible thick coating applied to a support comprising seals and / or cracks, this tape being made up of a strip of synthetic material having one side coated with a self-adhesive product, said face being covered over its entire width with a protective film which has little or no adhesion to the self-adhesive product and which can be easily removed when the tape is used. reinforcement, and characterized in that the synthetic material strip is a non-woven strip and in that the self-adhesive product coating one side of the non-woven strip is distributed on this face in the form of non-contiguous zones. - Reinforcement strip according to claim 1, characterized in that the self-adhesive product coating one side of the nonwoven strip is distributed on this face in the form of non-contiguous droplets. - Reinforcing strip according to claim 2, characterized in that the distribution of the self-adhesive product in the form of non-contiguous droplets is carried out by spraying. - Reinforcement strip according to one of claims 1 to
3, caractérisée en ce que le non tissé est choisi parmi les non tissés obtenus à partir de fibres ou fibrilles d'un polymère, ledit polymère étant en particulier tel que polyester, polyamide, polyoléfine comme polypropylene et polyethylene. - Bande d'armature suivant l'une des revendications 1 à3, characterized in that the nonwoven is chosen from nonwovens obtained from fibers or fibrils of a polymer, said polymer being in particular such as polyester, polyamide, polyolefin such as polypropylene and polyethylene. - Reinforcement strip according to one of claims 1 to
4, caractérisée en ce que le produit auto-adhésif distribué sur l'une des faces de la bandes en non tissé est à base d'un ou plusieurs polymères choisis parmi les polymères acryliques et notamment polymères ou copolymeres d'esters acryliques ou mêthacryliques, les copolymeres de styrène et de butadiène et les copolymeres d'oléfines et de monomères vinyliques et en particulier les copolymeres d'éthylène et d'acétate de vinyle.4, characterized in that the self-adhesive product distributed on one of the faces of the nonwoven strip is based on one or more polymers chosen from acrylic polymers and in particular polymers or copolymers of acrylic or methacrylic esters, copolymers of styrene and butadiene and copolymers of olefins and vinyl monomers and in particular copolymers of ethylene and vinyl acetate.
6 - Bande d'armature suivant l'une des revendications 1 à 5, caractérisée en ce que le film protecteur est en un polymère thermoplastique et notamment en un polymère oléfinique tel que polyethylene ou polypropylene.6 - Reinforcement strip according to one of claims 1 to 5, characterized in that the protective film is made of a thermoplastic polymer and in particular of an olefinic polymer such as polyethylene or polypropylene.
7 - Bande d'armature suivant l'une des revendications 1 à 6, caractérisée en ce que le film protecteur porte une couche d'un produit antiadhésif et notamment d'un silicone, sur sa surface venant en contact avec le produit auto-adhésif, ce film protecteur étant en particulier un papier silicone. 8 - Bande d'armature suivant l'une des revendications 1 à 7, caractérisée en ce qu'un ruban imperméable, dont la largeur est inférieure à celle de la bande en non tissé, est collé sur la face de ladite bande, qui est revêtue du produit auto-adhésif, de" telle sorte que l'axe longitudinal "du ruban coïncide sensiblement avec l'axe longitudinal de la bande, ledit ruban imperméable étant éventuellement recouvert par le film protecteur.7 - Reinforcement strip according to one of claims 1 to 6, characterized in that the protective film carries a layer of a non-stick product and in particular a silicone, on its surface coming into contact with the self-adhesive product , this protective film being in particular a silicone paper. 8 - Reinforcement strip according to one of claims 1 to 7, characterized in that an impermeable tape, the width of which is less than that of the nonwoven strip, is bonded to the face of said strip, which is coated with the self-adhesive product, " so that the longitudinal axis " of the tape substantially coincides with the longitudinal axis of the tape, said waterproof tape possibly being covered by the protective film.
9 - Bande d'armature suivant la revendication 8, caractérisée en ce que le ruban imperméable est en une matière polymère telle que polychlorure de vinyle, polyester, polyuréthanne, polyoléfine telle que polyethylene ou polypropylene.9 - Reinforcement tape according to claim 8, characterized in that the waterproof tape is made of a polymeric material such as polyvinyl chloride, polyester, polyurethane, polyolefin such as polyethylene or polypropylene.
10 - Bande d'armature suivant la revendication 8 ou 9, caractérisée en ce que la face libre du ruban imperméable est enduite d'un produit auto-adhésif en film continu ou non et notamment d'un produit auto-adhésif tel que celui porté par l'une des faces de la bande en non tissé. il - Procédé pour appliquer un revêtement épais souple sur un support comportant des joints et/ou des fissures en utilisant une bande d'armature auto-adhésive constituée par une bande en un matériau synthétique présentant une face revêtue d'un produit auto-adhésif, ladite face étant recouverte sur toute sa largeur d'un film protecteur peu ou pas adhérent au produit auto-adhésif et que l'on peut retirer aisément, ledit procédé étant du type dans lequel on positionne la face de la bande d'armature revêtue du produit auto-adhésif, après avoir retiré le film protecteur la recouvrant, sur la surface du support comportant le joint ou la fissure, après avoir éventuellement obturé ledit joint ou ladite fissure, de telle sorte que la bande d'armature soit centrée sur le joint ou la fissure et l'on colle provisoirement la bande d'armature ainsi positionnée sur ladite surface du support par pression, puis on applique le revêtement épais souple en plein sur le support y compris sur la bande d'armature collée provisoirement au support, et se caractérisant en ce que la. bande d'armature utilisée est une bande d'armature suivant l'une des revendications 1 à 10. - Procédé suivant la revendication 11, caractérisé en ce que la bande d'armature comporte un ruban imperméable et en ce que la largeur dudit ruban est choisie de telle sorte qu'après positionnement de la bande d'armature sur le joint ou la fissure à traiter, le ruban déborde de part et d'autre dudit joint ou de ladite fissure. - Procédé suivant la revendication 11 ou 12, caractérisé en ce que l'on effectue une obturation des joints ou des fissures présents dans le support et, si besoin est, un ragreage dudit support avant positionnement de la bande d'armature au droit du joint ou de la fissure à traiter. - Procédé suivant la revendication 13, caractérisé en ce que l'obturation des joints ou fissures est réalisée en faisant appel à des produits du type des mastics plastiques ou élastomères. Procédé suivant l'une des revendications 11 à 14, caractérisé en ce que le revêtement épais souple est un revêtement plastique épais ou encore un revêtement de complément d'imperméabilisation, d'imperméabili- sation ou d'etancheité, ces revêtements étant notamment des revêtements acryliques utilisés en dispersion aqueuse. 10 - Reinforcement tape according to claim 8 or 9, characterized in that the free face of the waterproof tape is coated with a self-adhesive product in continuous film or not and in particular with a self-adhesive product such as that worn by one of the faces of the nonwoven strip. it - Method for applying a flexible thick coating on a support comprising joints and / or cracks by using a self-adhesive reinforcement strip constituted by a strip of synthetic material having a face coated with a self-adhesive product, said face being covered over its entire width with a protective film little or not adhering to the self-adhesive product and which can be easily removed, said method being of the type in which the face of the reinforcement strip coated with the self-adhesive product is positioned, after having removed the protective film covering it, on the surface of the support comprising the seal or the crack, after possibly having closed the said seal or the said crack, such so that the reinforcement strip is centered on the joint or the crack and the reinforcement strip thus positioned is provisionally glued to said surface of the support by pressure, then the thick flexible coating is applied in full on the support including on the reinforcing strip provisionally bonded to the support, and characterized in that the. reinforcing strip used is a reinforcing strip according to one of claims 1 to 10. - Method according to claim 11, characterized in that the reinforcing strip comprises an impermeable tape and in that the width of said tape is chosen so that after positioning the reinforcing strip on the joint or crack to be treated, the tape overflows on either side of said joint or said crack. - A method according to claim 11 or 12, characterized in that one performs a sealing of the joints or cracks present in the support and, if necessary, a leveling of said support before positioning the reinforcing strip in line with the joint or the crack to be treated. - Method according to claim 13, characterized in that the sealing of the joints or cracks is carried out using products of the type of plastic sealants or elastomers. Method according to one of claims 11 to 14, characterized in that the flexible thick coating is a thick plastic coating or else a coating for additional waterproofing, waterproofing or sealing, these coatings being in particular coatings acrylics used in aqueous dispersion.
PCT/FR1986/000315 1985-09-19 1986-09-18 Self-adhesive armature tape for improving the resistance to cracking of a flexible thick coating applied to a support comprising joints and/or cracks and method for making such a coating reinforced by said tape WO1987001715A1 (en)

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FR8513915A FR2587396B1 (en) 1985-09-19 1985-09-19 SELF-ADHESIVE REINFORCEMENT STRIP AND METHOD OF USING THE SAME FOR APPLYING A FLEXIBLE THICK COATING ON A SUPPORT COMPRISING SEALS AND / OR CRACKS
FR85/13915 1985-09-19

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* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, Vol. 102, 1985, Columbus, Ohio (US) see page 93, Abstract 151058a & JP, A, 59192780 (Inoue Tetsuhiko) 1st. November 1984 *

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FR2587396A1 (en) 1987-03-20
FR2587396B1 (en) 1991-09-27
EP0240509A1 (en) 1987-10-14

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