EP3966403B1 - Bande de découplage - Google Patents

Bande de découplage Download PDF

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Publication number
EP3966403B1
EP3966403B1 EP20733955.7A EP20733955A EP3966403B1 EP 3966403 B1 EP3966403 B1 EP 3966403B1 EP 20733955 A EP20733955 A EP 20733955A EP 3966403 B1 EP3966403 B1 EP 3966403B1
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EP
European Patent Office
Prior art keywords
vinyl acetate
decoupling
layer
copolymer containing
containing ethylene
Prior art date
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EP20733955.7A
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German (de)
English (en)
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EP3966403A1 (fr
EP3966403C0 (fr
Inventor
Uwe Kaiser
Birgit Strieder
Daniel KARGL
Thomas Bachon
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Ewald Doerken AG
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Ewald Doerken AG
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Publication of EP3966403A1 publication Critical patent/EP3966403A1/fr
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Publication of EP3966403B1 publication Critical patent/EP3966403B1/fr
Publication of EP3966403C0 publication Critical patent/EP3966403C0/fr
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/185—Underlayers in the form of studded or ribbed plates
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/182—Underlayers coated with adhesive or mortar to receive the flooring
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
    • E04F15/20—Separately-laid insulating layers; Other additional insulating measures; Floating floors for sound insulation
    • E04F15/203—Separately-laid layers for sound insulation

Definitions

  • the invention relates to a decoupling web with a carrier web and a plurality of knobs protruding from the plane of the carrier web, the carrier web having a, preferably thermoplastic, plastic as the material.
  • the decoupling track is intended in particular for use for a surface covering structure that can be covered with covering elements, preferably for tile coverings.
  • decoupling is understood to mean the reduction of shear stresses or stress peaks between two layers arranged in a solid bond. Effective decoupling therefore prevents shear stresses or stress peaks present in one of the layers from being transferred to the other layer of the composite structure and causing damage there.
  • Decoupling membranes of the aforementioned type are used, for example, in construction when laying floor covering elements, such as ceramic tiles, in particular for decoupling, sealing and/or vapor pressure equalization.
  • the decoupling strips are laid on a surface, in particular glued, and form the support surface for the floor covering elements.
  • Tiles are laid using the thin-bed method, especially on young screed. If no decoupling path is laid between the tiled floor and the new screed, if the screed shrinks, the tiles could not follow the movement of the screed, especially due to their low expansion coefficient, so that shear stresses arise, which ultimately lead to the tiles detaching or even tearing being able to lead.
  • Decoupling membranes are also required when laying coverings on particularly critical surfaces, such as old wooden floors.
  • Decoupling tracks are usually made of film-like plastic, i.e. a flexible plastic layer that deforms under the influence of external forces.
  • the material is usually selected so that it has low emissions, especially in terms of pollutants.
  • a fleece is usually provided, which can be firmly connected to the carrier membrane.
  • the fleece can be placed on a surface when laying the decoupling membrane arranged and glued to the substrate.
  • An adhesive layer can therefore be provided between the underside of the decoupling membrane facing away from the covering elements and the substrate.
  • tile adhesive also known as adhesive mortar or connecting layer
  • adhesive mortar or connecting layer is then usually applied to the support level of the decoupling membrane.
  • tile adhesives are usually combed with a notched spatula or a serrated trowel and a different tile adhesive is used depending on the area of application and/or surface.
  • a reaction resin adhesive, a cementitious thin-bed mortar, a casein tile adhesive or a dispersion adhesive are used as tile adhesive.
  • the individual floor covering elements or tiles are laid on the tile adhesive.
  • the tile adhesive penetrates into the recesses of the decoupling membrane and hardens.
  • the connected floor covering elements are separated from the subsurface and mechanically decoupled. Due to the arrangement of the knobs transversely to the longitudinal direction and in the longitudinal direction of the carrier plate, channels arise that extend over the entire carrier plate. These channels work together with the knobs in such a way that they absorb and compensate for mechanical stress and in particular shear stress. This stress on the floor covering elements can be caused by the influences of temperature and moisture and/or by weight loading.
  • the adhesive tensile strength of the dimpled membranes known in practice - without the use of additional layers - generally does not meet the requirements required for the use of the decoupling membrane.
  • Adhesive tensile strength sometimes also referred to as tear-off strength, is understood to be a characteristic value that is used to evaluate the adhesion and/or adhesion of layers to surfaces, in particular of the tile adhesive to the decoupling membrane.
  • the adhesive tensile strength can be determined using an adhesive tensile test.
  • the WO 2010/105857 A1 relates to a decoupling mat that has a plurality of knobs.
  • the KR 2016 0019141 A concerns a membrane that can be used for impact sound insulation.
  • the KR 2010 0068761 A concerns a railway that aims to dampen noise.
  • the KR 100 601 401 B1 concerns impact sound insulation.
  • the EP 1 712 695 A2 relates to a floor structure that is covered with ceramic tiles.
  • the object of the present invention is to provide a decoupling web which has improved adhesive tensile strength.
  • the carrier web has a copolymer containing ethylene and vinyl acetate as a material.
  • the copolymer containing ethylene and vinyl acetate is formed as a copolymer of ethylene and vinyl acetate, preferably ethylene-vinyl acetate (EVA, EVAC).
  • the carrier web can only contain the copolymer containing ethylene and vinyl acetate, preferably EVAC, “partially”.
  • the material of the carrier web can also have another, preferably thermoplastic, plastic.
  • thermoplastic, plastic materials can also be provided.
  • the mechanical properties of the decoupling web can be significantly improved compared to decoupling webs known from the prior art by means of the copolymer containing ethylene and vinyl acetate. So you can a significantly better adhesion, preferably up to 60%, can be achieved compared to decoupling membranes known from practice. The adhesion is improved in particular to the fleece and/or to the tile adhesive.
  • the decoupling path is not only significantly more flexible, but also shows better decoupling properties than the decoupling paths known from practice. Due to the flexibility, for example, packaging, especially in rolls, of the decoupling web can be made easier, which reduces the effort required to store the decoupling web.
  • the improved adhesion of tile adhesive to the decoupling membrane can also improve the adhesive tensile strength of the entire decoupling membrane.
  • ethylene-vinyl acetate (EVA, also called EVAC) ultimately refers to a group of copolymers that are formed by the polymerization of ethylene and vinyl acetate. Despite the strong branching of the chain molecules, the structure of ethylene vinyl acetate is only crystalline in a few places. With a corresponding vinyl acetate content, the ethylene-vinyl acetate can be partially crystalline and thermoplastic. A translucent formation of ethylene vinyl acetate is also known. The density and other properties depend particularly on the vinyl acetate content (VAC). With a lower proportion of vinyl acetate (VAC), ethylene vinyl acetate is more translucent, tougher, more flexible and more dimensionally stable under heat compared to PE-LD. Higher vinyl acetate content reduces strength, stiffness and chemical resistance.
  • VAC vinyl acetate content
  • the copolymer according to the invention containing ethylene and vinyl acetate has a flexibility that is at least essentially similar to rubber and ultimately resembles soft polyvinyl chloride, particularly in terms of its property profile. At the same time, however, tear and impact resistance as well as light transmission and, in particular, gloss increase.
  • the properties of the decoupling membrane with regard to watertightness, vapor pressure equalization and good drying are further ensured.
  • the decoupling membrane according to the invention is waterproof, enables good vapor pressure equalization and also good drying.
  • the vapor pressure equalization and drying can also be improved by having the channels extending over the decoupling path run between the adjacent knobs, are connected to one another indirectly and/or directly for the entire knobbed web.
  • the decoupling effect is advantageously designed in such a way that, on the one hand, no cracks occur in the surface of the covering facing away from the decoupling membrane and, on the other hand, that possible cracks in the subsurface, which only occur in particular after the decoupling membrane has been laid, are not in the tile adhesive layer and/or the Mark the covering elements.
  • the decoupling web according to the invention enables a high winding capability, so that the decoupling web can be easily rolled up, preferably for transport.
  • the decoupling track according to the invention can have a high torsional rigidity or a high torsional rigidity, so that the decoupling track cannot be bent and/or twisted, in particular by 90°.
  • the decoupling membrane according to the invention in addition to its excellent decoupling properties, also has very good impact sound insulation. This effect is also the result of the addition according to the invention of the copolymer containing ethylene and vinyl acetate.
  • the carrier web has at least one thermoplastic polymer and/or elastomer as a further material.
  • hard polyethylene (HDPE), polyethylene (PE) and/or polypropylene (PP) can be provided as the thermoplastic polymer and/or elastomer.
  • the material of the carrier web can have a further thermoplastic material in addition to the copolymer containing ethylene and vinyl acetate.
  • the copolymer containing ethylene and vinyl acetate can be mixed with the other material.
  • the further material has a mass fraction of the material of the carrier web of at least 20% by weight, preferably between 30% by weight to 99% by weight, more preferably between 40% by weight to 95% by weight. -%, more preferably between 50% by weight to 80% by weight.
  • the essential properties of the decoupling web in particular the decoupling properties and the adhesive tensile strength, are significantly improved, preferably up to 50%. can be improved.
  • the copolymer containing ethylene and vinyl acetate in particular ethylene-vinyl acetate (EVAC)
  • EVAC ethylene-vinyl acetate
  • the properties, in particular the adhesive tensile strength and/or the decoupling properties, of the decoupling web can be adjusted accordingly. An individual adaptation to the respective customer wishes and/or the properties intended for the respective use can then be easily possible.
  • the copolymer containing ethylene and vinyl acetate has a vinyl acetate content of between 16% to 30% and in particular at least essentially between 25% to 29%, in particular based on the copolymer containing ethylene and vinyl acetate.
  • the properties of the copolymer can be adjusted or varied accordingly, in particular depending on the respective customer wishes, usage specifications or the like.
  • the elastic modulus of the material should decrease as the proportion of vinyl acetate (VAC) increases.
  • VAC vinyl acetate
  • the copolymer containing ethylene and vinyl acetate is largely amorphous, while with a vinyl acetate of less than 30 to 40% by weight, the copolymer containing ethylene and vinyl acetate is partially crystalline and thermoplastic.
  • the copolymer containing ethylene and vinyl acetate is thermoplastic, so that in particular the vinyl acetate content is less than 40% by weight - based on the copolymer containing ethylene and vinyl acetate.
  • the properties of the entire decoupling path could be further improved compared to other vinyl acetate proportions.
  • the copolymer containing ethylene and vinyl acetate with a vinyl acetate content of 28% is not only inexpensive but also easily available, which significantly simplifies the production of the carrier web.
  • the copolymer containing ethylene and vinyl acetate, in particular ethylene-vinyl acetate, with a vinyl acetate of about 28% is also referred to as "EVA28".
  • the decoupling properties and/or the adhesion in particular the adhesive tensile strength
  • a multi-layer structure of the carrier web can have layers that differ from one another with regard to adhesion, adhesive tensile strength, elasticity and/or elongation at break.
  • the carrier web has an at least two-layer structure, with at least two layers (A, B) having a material composition that differs from one another.
  • the different material composition has a particular impact with regard to differences in flexibility, elasticity, adhesion and/or adhesive tensile strength.
  • This aspect of the multilayer structure of the carrier web is therefore particularly advantageous in combination with the addition of the copolymer containing ethylene and vinyl acetate to the material of the carrier web and/or as the material of the carrier web.
  • the copolymer containing ethylene and vinyl acetate can be introduced both in the entire carrier web, in particular in each layer of the carrier web, or even in at least one layer of the carrier web.
  • This enables the carrier web to be highly adaptable to different purposes or operating environments.
  • the outside of the carrier web facing the fleece and/or the tile adhesive can be connected to the Copolymer containing ethylene and vinyl acetate can be provided or mixed, whereby the adhesion to the fleece and / or the tile adhesive can be significantly improved.
  • At least one layer - either layer A and/or layer B - of the carrier web has the copolymer containing ethylene and vinyl acetate, in particular ethylene-vinyl acetate (EVAC).
  • EVAC ethylene-vinyl acetate
  • At least one outer layer has the copolymer containing ethylene and vinyl acetate, as mentioned above, and/or consists of it.
  • a layer structure in the form A-B-A or A-B is preferably provided.
  • the outer layers A, A can be at least essentially identical in construction - i.e. have the same material composition and/or the same layer thickness.
  • a layer structure in the form A-B-C would also be conceivable, with an outer layer C different from the outer layer A.
  • the outer layer C can have a different proportion of the copolymer containing ethylene and vinyl acetate or contain no copolymer containing ethylene and vinyl acetate at all.
  • the aforementioned layer structures make it possible for the copolymer containing ethylene and vinyl acetate to ultimately be used in those layers - and contribute to improving the mechanical properties - where it is “needed”. For example, it is not immediately necessary to integrate the copolymer containing ethylene and vinyl acetate in the middle layer (layer B), although this is of course not excluded according to the invention.
  • the outsides or outer layers of the carrier web can have the copolymer containing ethylene and vinyl acetate, although if necessary only one outside or one outer layer of the carrier web can comprise the copolymer containing ethylene and vinyl acetate.
  • each layer ((A, B) and/or (A, B, C)) of the layer structure (for example A-B, A-B-A and/or A-B-C) of the carrier web it is possible for each layer ((A, B) and/or (A, B, C)) of the layer structure (for example A-B, A-B-A and/or A-B-C) of the carrier web to have the copolymer containing ethylene and vinyl acetate and/or consists of it.
  • the copolymer containing ethylene and vinyl acetate can be introduced or introduced precisely into the layers in which the properties, in particular the mechanical properties, are to be improved.
  • the layer (A, B, C) containing the copolymer containing ethylene and vinyl acetate has a mass fraction of the copolymer containing ethylene and vinyl acetate in the material of the layer (A, B, C) of at least 5 wt. -%, preferably between 10% by weight to 80% by weight, more preferably between 20% by weight to 60% by weight, more preferably between 25% by weight to 55% by weight.
  • the aforementioned mass proportions of the copolymer containing ethylene and vinyl acetate particularly improve the adhesion and decoupling properties of the entire decoupling web and in particular of the carrier web.
  • thermoplastic polymer and/or elastomer is provided as a further material in the layer (A, B, C), which has the copolymer containing ethylene and vinyl acetate.
  • HDPE, PE and/or PP are particularly preferred as thermoplastic materials.
  • the copolymer containing ethylene and vinyl acetate is mixed with the further material of the layer (A, B, C) containing the copolymer containing ethylene and vinyl acetate with the further thermoplastic material.
  • the further material can in turn have a mass fraction of the material of the carrier web and/or of the mass fraction of the material of the layer (A, B, C) of at least 20% by weight, preferably between 30% by weight to 99% by weight. , more preferably between 40% by weight to 95% by weight, more preferably between 50% by weight to 80% by weight.
  • the mass proportions of the further thermoplastic material correspond to the mass proportions of the copolymer containing ethylene and vinyl acetate in the copolymer containing ethylene and vinyl acetate layer (A, B, C) added to give 100% by weight.
  • the layer (A, B, C) containing the copolymer containing ethylene and vinyl acetate only has another thermoplastic material in addition to the copolymer containing ethylene and vinyl acetate.
  • the outer layer (A) and/or the outer layers (A, A) and/or the outer layers (A, C) are at least 10%, preferably between 10% and 90% %, more preferably between 40% to 60% and in particular at least substantially 50%, of the layer thickness of a further, in particular central, layer (in particular layer B).
  • the advantage of the above-mentioned conditions is that the outer layers (layer A or layer C) can have a smaller layer thickness and thus a lower material proportion - measured in relation to the total material proportion of the carrier web - compared to the "main layer" or central layer B.
  • a multi-layer structure of the carrier web can easily be produced by extrusion molding.
  • a coextrusion die and/or a multilayer die can be used to apply or produce the carrier web.
  • the carrier web can be produced by deep-drawing thermoplastic material.
  • a multi-layer die can be used as the extrusion nozzle, which enables a layer structure in the form A-B-A or A-B-C or A-B.
  • a multi-layer blown film is produced, which is shaped in a deep-drawing process in particular after its production.
  • the aforementioned preferred ratios of the layer thicknesses of the layer structure of the carrier web can ensure the lowest possible material consumption of the copolymer containing ethylene and vinyl acetate, while at the same time the materials associated with the copolymer containing ethylene and vinyl acetate Improvements according to the invention compared to the prior art can be guaranteed.
  • the carrier web in particular the decoupling web, has an adhesive tensile strength of greater than 0.1 N/mm 2 , preferably greater than 0.2 N/mm 2 , more preferably between 0.2 N/mm 2 and 5 N/mm 2 , on.
  • the adhesive tensile strength is determined using a special test, which is also called the adhesive tensile test and/or tear test.
  • DIN EN 12004:2017-05 has a requirement for determining the adhesive tensile strength under defined conditions.
  • Adhesive tensile strengths of the aforementioned magnitude enable, in particular, good adhesion to the substrate and also ensure good adhesion to the tile adhesive.
  • the adhesive tensile strength of the carrier web can be increased by adding the copolymer containing ethylene and vinyl acetate.
  • the carrier web in particular the decoupling web, has a modulus of elasticity of less than 100 GPa, preferably less than 10 GPa, more preferably between 0.01 to 5 GPa and preferably between 0.05 to 2 .5 GPa.
  • the modulus of elasticity is a material parameter from materials engineering that ultimately describes the proportional relationship between stress and strain during the deformation of a solid body in the case of linear-elastic behavior.
  • the elastic modulus is the proportional elastic constant in Hooke's law. The higher the modulus of elasticity, the less elastic or flexible the solid body is.
  • the modulus of elasticity can be determined according to EN ISO 527-1 (as of May 2019).
  • the aforementioned standard is a European standard for plastic to determine the tensile properties, which can be determined by a tensile test with a tensile testing machine.
  • the decoupling web can have a fabric and/or nonwoven layer, in particular on the side opposite the carrier web plane.
  • the fabric and/or non-woven layer can be firmly connected to the carrier web, in particular, the fabric and/or nonwoven layer being laminated onto the carrier web.
  • the adhesion to the nonwoven layer can be improved compared to the prior art, preferably by up to 30%, in particular by using the copolymer containing ethylene and vinyl acetate.
  • a spunbond can be used as the nonwoven, in particular a spunbond containing thermoplastic material is provided, preferably a polypropylene spunbond.
  • the fleece can ultimately correspond to the fleeces already known in practice, which are arranged on a carrier web.
  • the knobs are arranged at a distance from one another and, preferably, transversely to the longitudinal direction and in the longitudinal direction of the decoupling path.
  • the knobs can form a distance from the carrier web plane and from a lower knob plane formed by the knob end face.
  • the knobs represent so-called “recesses” in the carrier web, so that an upper carrier web level ultimately results, which has a plurality of depressions formed by the knobs, so that the knob end faces form the lower knob level.
  • the aforementioned design of the knobs makes it possible to create “channels” that contribute to decoupling.
  • knobs are conceivable.
  • an at least essentially cuboid-shaped nub can be used.
  • a knob with an at least essentially three-legged shape - seen in cross section - is also conceivable.
  • elliptical, preferably round and/or oval shapes - seen in cross section - of the knobs are also conceivable.
  • the knobs designed as depressions ultimately form side walls of the knobs, which connect the knob end faces to the carrier web plane.
  • knobs and/or at least one knob have an undercut at least in sections, preferably on at least one side wall of the knob.
  • the undercut serves to improve the adhesion or grip of the tile adhesive.
  • the decoupling web is filled after being placed on a substrate, in particular where the outside of the carrier web having the fleece or fabric layer is arranged on the substrate. Filling can be done in particular with tile adhesive. A surface covering, in particular tiles, can then be arranged on the tile adhesive. The tile adhesive can preferably be introduced into the knobs or into the depressions formed by the knobs and spread over the decoupling membrane.
  • the tile adhesive penetrates into the undercut during filling, resulting in improved clawing. This in turn leads to a fixation and/or positive fixing of the tile sheet or the covering elements to be applied to the decoupling sheet.
  • the shape for forming the undercut on the inside of the knob is sickle-shaped or arcuate and/or arcuate-shaped and/or crescent-shaped.
  • This arch section-shaped design in particular results in improved demolding being made possible during the production of the decoupling path.
  • a rounded or sickle-like shape of the undercut advantageously ensures a slight separation between the mold and the decoupling path. This means that the decoupling track cannot be damaged in particular during demolding.
  • the rounded undercuts preferably serve to reduce the stress peaks of the shear stress of the covering elements and/or distribute them evenly on the decoupling path.
  • knobs in particular all knobs, are at least essentially identical in construction.
  • the height of the knobs is between 1 mm and 5 mm, preferably 2 mm to 4 mm, more preferably 2.5 mm to 3.5 mm.
  • This comparatively low stud height enables a low overall layer structure and implies a reduced amount of tile adhesive required for the connection between the decoupling membrane and the covering elements.
  • the copolymer containing ethylene and vinyl acetate due to the inventive addition of the copolymer containing ethylene and vinyl acetate, a firm connection is created between the tile adhesive and the Decoupling path achieved while achieving an excellent decoupling effect.
  • the clear distance between adjacent knobs has a width of greater than 2 mm, in particular between 3 mm to 9 mm, preferably between 4 mm to 8 mm, more preferably between 5 mm to 6 mm. This clear distance also determines the width of the channel section and defines the free space to the neighboring knobs.
  • the ratio of the area of the knob bottoms or knob end faces of all knobs to the carrier web plane is preferably between 40% to 70%, more preferably between 45% to 55% and in particular at least substantially 50%.
  • a load distribution of the tensile stress that occurs is made possible through the channels because the tension that occurs is preferably compensated for.
  • the ratio of 40% to 60%, preferably 45% to 55% is particularly advantageous and has good decoupling properties and good adhesive tensile strength.
  • Fig. 6 shows a decoupling web 1.
  • the decoupling web 1 has a carrier web 3 and a plurality of knobs 5 protruding from the carrier web plane 4.
  • the carrier web 3 has a plastic as a material and/or consists of a plastic.
  • the carrier web 3 can have a thermoplastic material as the material.
  • Fig. 5 shows that the decoupling track 1 is intended for use for a surface covering structure 2 that can be covered with covering elements, in the exemplary embodiment shown with tiles 14.
  • Fig. 5 shows that a tile covering is provided as surface covering structure 2.
  • the carrier web 3 shown in the exemplary embodiments has and/or consists of a copolymer containing ethylene and vinyl acetate as a material.
  • the copolymer containing ethylene and vinyl acetate is formed as a copolymer of ethylene and vinyl acetate, preferably as ethylene-vinyl acetate (EVA, EVAC).
  • the carrier web 3 can have at least one thermoplastic polymer and/or elastomer as a further material.
  • HDPE, PE and/or PP can be provided as a thermoplastic and thus as a further material.
  • the copolymer containing ethylene and vinyl acetate can be mixed with the other thermoplastic material.
  • the further thermoplastic material of the carrier web 3 can have a mass fraction of the material of the carrier web 3 between 40 and 95% by weight.
  • the proportion of the material of the carrier web 3 of the further thermoplastic material, in particular in relation to the copolymer containing ethylene and vinyl acetate, can be selected depending on the operating environment or the intended use.
  • the copolymer containing ethylene and vinyl acetate can have a mass fraction of the material of the carrier web 3 of at least 5% by weight and in further embodiments between 25% by weight to 55% by weight.
  • the copolymer containing ethylene and vinyl acetate has a vinyl acetate content of at least 5% and in further embodiments between 16% to 30% - based on the copolymer containing ethylene and vinyl acetate.
  • the copolymer containing ethylene and vinyl acetate is thermoplastic.
  • the carrier web 3 has a single-layer structure and is therefore formed by the material layer A.
  • this layer structure can also be produced using a multi-layer extrusion die, whereby layer A can therefore be applied in several layers of the same material composition.
  • the material layer A has an at least essentially homogeneous material distribution.
  • Fig. 2 shows that the carrier web 3 has an at least two-layer layer structure 6.
  • Layers A and B are provided, with both Layer A and layer B are designed as outer layers, i.e. form an outside of the carrier web 3.
  • Layers A and B have a material composition that differs from one another.
  • the layer A, which is in Fig. 2 shown can face the tile adhesive.
  • At least one layer A and/or B of the carrier web 3 can have the copolymer containing ethylene and vinyl acetate.
  • the outer layer A has the copolymer containing ethylene and vinyl acetate.
  • a layer structure in the form AB is shown.
  • Layer B may or may not contain the copolymer containing ethylene and vinyl acetate.
  • the Fig. 3 shows a layer structure in the form ABA, whereby the outer layers A can be designed to be the same or identical with regard to their layer thickness 7 and/or their material composition.
  • the layers A, which are in Fig. 3 shown may have a material composition that differs from layer B.
  • the layer C can have a material composition and/or layer thickness 7 that differs from the outer layer A and/or from layer B.
  • the outer layer C has a modified proportion of the copolymer containing ethylene and vinyl acetate or no proportion of the copolymer containing ethylene and vinyl acetate at all.
  • the further layer B provided between the outer layers (A or A, A or A, C), in particular the centrally bordered layer B, may not contain any proportion of the copolymer containing ethylene and vinyl acetate.
  • each layer A, B or A, B, C of the layer structure 6 of the carrier web 3 can have the copolymer containing ethylene and vinyl acetate, the individual layers being different in terms of their material composition, their properties and/or their layer thicknesses 7 can be different.
  • a plurality of further layers to be provided in addition to layers A, B, C differ with regard to or compared to the layers A, B or A, B, C by their material composition, their properties and / or layer thickness 7.
  • the layer A, B and/or C containing the copolymer containing ethylene and vinyl acetate can have a mass fraction of the copolymer containing ethylene and vinyl acetate in the material of the respective layer A, B and/or C of at least 5% by weight.
  • the mass fraction of the copolymer containing ethylene and vinyl acetate in the outer layer A and/or in the outer layer C is between 30 and 50% by weight.
  • at least one thermoplastic material in particular a polymer and/or elastomer
  • HDPE, PE and/or PP can be used as plastic material.
  • the copolymer containing ethylene and vinyl acetate can be mixed with the other plastic material.
  • the further plastic material can have a mass proportion of between 50 to 90% by weight of the material of the carrier web 3 and/or of the material of the layer A, B and/or C containing the copolymer containing ethylene and vinyl acetate. It is particularly preferred that the mass fraction of the further plastic layer in layer B is greater than the mass fraction of the copolymer containing ethylene and vinyl acetate.
  • the mass fraction of the copolymer containing ethylene and vinyl acetate in the outer layers A and / or C is greater, preferably by at least 50%, than the mass fraction of the copolymer containing ethylene and vinyl acetate in the middle or further layer Are.
  • the outer layer A and/or the outer layers A, A and/or A, C has at least 10%, in the exemplary embodiment shown at least essentially 50%, of the layer thickness 7 of a further, in particular central, layer B.
  • the material of layer B can have a significantly higher proportion of the total material of the carrier web 3 or the layer structure 6 of the carrier web 3, in particular up to 80% and/or at least 40%.
  • the carrier web 3, in particular the decoupling web 1 has an adhesive tensile strength of greater than 0.1 N/mm 2 , in further embodiments between 0.2 N/mm 2 to 5 N/mm 2 .
  • the carrier web 3, in particular the decoupling web 1 has a modulus of elasticity of less than 100 GPa, in further embodiments between 0.05 to 2.5 GPa.
  • Fig. 5 shows that the decoupling web 1 has a fabric and/or non-woven layer 8.
  • a fleece layer 8 is provided.
  • the fleece layer 8 is firmly connected to the carrier web 3.
  • the fleece layer 8 can be laminated onto the carrier web 3.
  • the fleece layer 8 is arranged on the knob end faces 10 or on the knob plane 11.
  • the fleece layer 8 is on a substrate 17, as shown in the Fig. 5 can be seen, arranged.
  • the fleece layer 8 can be glued to the substrate 17 via an adhesive layer.
  • the fleece layer 8 is glued to the substrate 17 using the tile adhesive 13.
  • the tile 14 has a height of approximately 5 mm +/- 3 mm.
  • the height of the knob 5 can be approximately 4 mm.
  • the tile adhesive 13 applied to the top of the carrier sheet level 4 can, for example, have a height of between 2 to 10 mm, in particular between 3 to 6 mm.
  • the thickness of the carrier web 3 and/or the fleece layer 8 can be approximately 0.5 mm.
  • the tile adhesive layer can have a height of 3 to 6 mm.
  • the Fig. 6 to 8 show that the knobs 5 are arranged at a distance from one another.
  • the knobs 5 run both in the longitudinal direction L and transversely to the longitudinal direction L.
  • the knobs 5 have an orderly arrangement. But this does not have to be the case. Random arrangements of the knobs 5 are also possible.
  • the knobs 5 are at a distance 9 from the upper carrier web level 5 and a lower knob plane 11 formed by the outer knob end faces 10.
  • the knob level 11 is formed by the knob end faces 10.
  • Fig. 6 shows that the knobs 5 form an at least essentially cuboid-shaped depression.
  • Fig. 7 and 8th it is shown that the knobs 5 have an at least essentially three-legged cross-sectional shape. In principle, other forms are also possible.
  • the distance 9 to the upper carrier web level 5 is ultimately determined by the height of the side walls 16 of the knob 5, the side walls 16 connecting the carrier web level 4 with the knob level 11.
  • the knob interior 15 is ultimately limited by the side walls 16.
  • the Fig. 5 shows that the knobs 5 and/or at least one knob 5 has an undercut 12 at least in sections.
  • the undercut 12 is crescent-shaped or curved.
  • An undercut 12 having at least a substantially rectangular cross-sectional shape is also possible in principle.
  • Fig. 8 It is shown that 11 projections 18 are provided on the knob end faces. Ultimately, the projections 18 can have any shape and ultimately serve to structure the dimpled bottom.
  • the embodiments according to the invention to be compared with one another and the comparative example 0 not according to the invention have an at least essentially identical design of the shape of the decoupling path, with the knob shapes of the examples corresponding in geometric form.
  • the exemplary embodiments only differ in terms of their material composition.
  • the carrier webs of the decoupling web are manufactured by extrusion of thermoplastic and subsequent shaping on a vacuum deep roller.
  • a polypropylene spunbond is laminated onto the support web on the knob level.
  • the extrusion is carried out with a multi-layer die, whereby the "single-layer structure" is also obtained through the multi-layer extrusion die, but ultimately the same material composition is present in the applied layers, so that the multi-layer extrusion die can then produce a single-layer structure.
  • the exemplary embodiments to be compared also have at least essentially the same total layer thickness of the carrier web, with the ratio of the layers being given in the following table in the case of a multi-layer structure.
  • the knob shape of the exemplary embodiments corresponds at least essentially to that in Fig. 6 square nub shown.
  • the materials EVA28, EVA18 and HDPE correspond to the exemplary embodiments.
  • the exemplary embodiments have the following material composition: Example Layer A Layer B Ratio A : B : A Comparative example 0 100% HDPE / / example 1 70% HDPE / / 30% EVA28 Example 2 60% HDPE / / 40% EVA28 Example 3 50% HDPE / / 50% EVA28 Example 4 70% HDPE 100% HDPE 0.25: 0.5: 0.25 30% EVA28 Example 5 60% HDPE 100% HDPE 0.25: 0.5: 0.25 40% EVA28 Example 6 50% HDPE 100% HDPE 0.25: 0.5: 0.25 50% EVA28 Example 7 70% HDPE 90% HDPE 0.25: 0.5: 0.25 30% EVA28 10% EVA28 Example 8 60% HDPE 95% HDPE 0.25: 0.5: 0.25 40% EVA28 5% EVA28 Example 9 70% HDPE / / 30% EVA18 Example 10 60% HDPE / / 40% EVA18 Example 11 60% HDPE 100% HDPE 0.15:0.7:0.15 40% EVA28 Example 12 30% HDPE 100% HDPE 0.15: 0.7: 0.15 70% EVA18 Example 13
  • Example 12 and 13 a two-layer structure is provided, namely a layer structure of form AB.
  • a spunbond layer containing polypropylene is arranged on layer B, in particular laminated.
  • HDPE is intended as a further thermoplastic plastic material and also as a material for the comparative examples not according to the invention.
  • the copolymer containing ethylene and vinyl acetate is designed as ethylene-vinyl acetate and has a vinyl acetate content of at least essentially 28% based on the copolymer of ethylene and vinyl acetate. This material is referred to as "EVA28”.
  • Another copolymer containing ethylene and vinyl acetate is designed as ethylene-vinyl acetate and has a vinyl acetate content of at least essentially 18% based on the copolymer of ethylene and vinyl acetate. This material is referred to as "EVA18".
  • thermoplastic material When adding the copolymer of ethylene and vinyl acetate to the thermoplastic material, it is provided that it is mixed with the thermoplastic material before extrusion of the carrier web. Extrusion takes place both with the thermoplastic material and with the copolymer of ethylene and vinyl acetate.
  • the aforementioned exemplary embodiments have been examined with regard to different criteria.
  • the tensile adhesive strength was determined according to DIN EN 12004-02:2017-05.
  • the modulus of elasticity was determined to determine flexibility.
  • the decoupling properties when using the decoupling membrane as a decoupling base for a tile covering have been examined.
  • the adhesion to the tile adhesive of the decoupling membrane was determined.
  • the water resistance has also been determined.
  • results table shown below relates the test results relative to each other.
  • the following results can be achieved: • - : insufficient result • - : poor result • o: satisfactory result • + : good result • ++ : very good result
  • the central layer B enclosed between the outer layers A also contains the copolymer containing ethylene and vinyl acetate.
  • the adhesion to the tile adhesive and the decoupling properties can also be improved by adding the copolymer containing ethylene and vinyl acetate. This results in improved use and use of the decoupling track according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Claims (12)

  1. Bande de découplage (1), prévue en particulier pour être utilisée pour une structure de revêtement de surface (2) pouvant être recouverte d'éléments de revêtement, de préférence des revêtements de carrelage, avec une bande support (3) et une multitude de plots (5) dépassant du plan de la bande support (4), qui représentent des creux dans la bande support (3), la bande support (3) présentant comme matériau un copolymère contenant de l'éthylène et de l'acétate de vinyle, en particulier un copolymère d'éthylène et d'acétate de vinyle, de préférence de l'éthylène-acétate de vinyle (EVA),
    caractérisé en ce que la bande de support (3) présente comme autre matériau au moins un polymère et/ou un élastomère thermoplastique, en particulier du polyéthylène dur (HDPE), du polyéthylène (PE) et/ou du polypropylène (PP), et en ce que la bande de support (3) présente comme autre matériau au moins un polymère et/ou un élastomère thermoplastique.
    en ce que le copolymère contenant de l'éthylène et de l'acétate de vinyle présente une proportion en masse dans le matériau de la bande de support comprise entre 25 % en poids et 55 % en poids,
    en ce que l'autre matériau présente une proportion en masse par rapport au matériau de la bande de support (3) d'au moins 20 % en poids,
    en ce que le copolymère contenant de l'éthylène et de l'acétate de vinyle présente une proportion d'acétate de vinyle comprise entre 16% et 30%,
    en ce que la bande de support (3) présente une structure stratifiée (6) à au moins deux couches, au moins deux couches (A, B) présentant une composition de matériau différente l'une de l'autre et
    qu'au moins une couche (A, B) de la bande support (3) présente le copolymère contenant de l'éthylène et de l'acétate de vinyle.
  2. Bande de découplage selon la revendication 1, caractérisée en ce que le copolymère contenant de l'éthylène et de l'acétate de vinyle est mélangé avec l'autre matériau.
  3. Bande de découplage selon l'une des revendications précédentes, caractérisée en ce que le copolymère contenant de l'éthylène et de l'acétate de vinyle présente une proportion d'acétate de vinyle de 25% à 29%, notamment par rapport au copolymère contenant de l'éthylène et de l'acétate de vinyle.
  4. Bande de découplage selon l'une des revendications précédentes, caractérisée en ce qu'au moins une couche extérieure (A) de la bande support (3) présente le copolymère contenant de l'éthylène et de l'acétate de vinyle et, de préférence, une structure en couches A-B-A ou A-B étant prévue.
  5. Bande de découplage selon l'une des revendications précédentes, caractérisée en ce que seule une couche extérieure (A) et/ou les couches extérieures (A, A) présente(nt) le copolymère contenant de l'éthylène et de l'acétate de vinyle ou en ce que chaque couche (A, B) de la structure stratifiée (6) de la bande support (3) présente le copolymère contenant de l'éthylène et de l'acétate de vinyle.
  6. Bande de découplage selon l'une des revendications précédentes, dans laquelle l'autre matériau présente une proportion en masse par rapport au matériau de la bande support (3) et/ou par rapport au matériau de la couche (A, B) présentant le copolymère contenant de l'éthylène et de l'acétate de vinyle comprise entre 30 % en poids et 99 % en poids, de préférence entre 40 % en poids et 95 % en poids, de préférence encore entre 50 % en poids et 80 % en poids.
  7. Bande de découplage selon l'une des revendications précédentes, caractérisée en ce que la couche extérieure (A) et/ou les couches extérieures (A, A) de la bande de support (3) présente(nt) au moins 10 %, de préférence entre 10 % et 90 %, plus préférablement entre 40 % et 60 % et en particulier au moins essentiellement 50 % de l'épaisseur de couche (7) d'une autre couche (B), en particulier centrale.
  8. Bande de découplage selon l'une des revendications précédentes, caractérisée en ce que la bande support (3), en particulier la bande de découplage (1), présente une résistance à la traction adhésive supérieure à 0,1 N/mm2 , de préférence supérieure à 0,2 N/mm2 , de préférence encore comprise entre 0,2 N/mm2 et 5 N/mm2.
  9. Bande de découplage selon l'une des revendications précédentes, caractérisée en ce que la bande support (3), en particulier la bande de découplage (1), présente un module d'élasticité inférieur à 100 GPa, de préférence inférieur à 10 GPa, de préférence encore compris entre 0,01 et 5 GPa et de préférence entre 0,05 et 2,5 GPa.
  10. Bande de découplage selon l'une des revendications précédentes, caractérisée en ce que la bande de découplage (1) présente, en particulier sur le côté opposé au plan de la bande support (4), une couche de tissu et/ou de non-tissé (8), en particulier la couche de non-tissé (8) étant solidaire de la bande support (3), en particulier étant contrecollée sur la bande support (3).
  11. Bande de découplage selon l'une des revendications précédentes, caractérisée en ce que les plots (6) sont disposés à distance les uns des autres et, de préférence, transversalement à la direction longitudinale (L) et dans la direction longitudinale (L) de la bande de découplage (1), en particulier dans laquelle les plots (5) forment une distance (9) par rapport au plan supérieur (4) de la bande de support et à un plan inférieur (11) des plots formé par les surfaces frontales extérieures (10) des plots.
  12. Bande de découplage selon l'une des revendications précédentes, caractérisée en ce qu'au moins un nodule (5) présente au moins par sections une contre-dépouille (12).
EP20733955.7A 2019-07-05 2020-06-18 Bande de découplage Active EP3966403B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019004633.1A DE102019004633A1 (de) 2019-07-05 2019-07-05 Entkopplungsbahn
PCT/EP2020/066913 WO2021004745A1 (fr) 2019-07-05 2020-06-18 Bande de découplage

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EP3966403A1 EP3966403A1 (fr) 2022-03-16
EP3966403B1 true EP3966403B1 (fr) 2024-03-20
EP3966403C0 EP3966403C0 (fr) 2024-03-20

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US (1) US20220372767A1 (fr)
EP (1) EP3966403B1 (fr)
CA (1) CA3143883C (fr)
DE (1) DE102019004633A1 (fr)
WO (1) WO2021004745A1 (fr)

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Publication number Priority date Publication date Assignee Title
US11725399B1 (en) * 2022-10-17 2023-08-15 Dmx Membranes Limited Flooring underlayment

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DE3701414A1 (de) * 1987-01-20 1988-07-28 Werner Schlueter Verfahren und vorrichtung zum aufbringen von verkleidungen, wie keramikplattenbelaegen, putzmoertel oder dergleichen auf einem wand- oder einem bodenuntergrund eines gebaeudes
DE19918343C2 (de) * 1999-04-22 2001-03-08 Wacker Chemie Gmbh Verfahren zur Herstellung von Faservliesen nach dem Airlaidverfahren
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Also Published As

Publication number Publication date
WO2021004745A1 (fr) 2021-01-14
EP3966403A1 (fr) 2022-03-16
CA3143883A1 (fr) 2021-01-14
EP3966403C0 (fr) 2024-03-20
CA3143883C (fr) 2024-04-16
DE102019004633A1 (de) 2021-01-07
US20220372767A1 (en) 2022-11-24

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