EP3883766A1 - Structure multicouche pour la realisation d'un revetement de sol, et procede de fabrication d'une telle structure multicouche - Google Patents
Structure multicouche pour la realisation d'un revetement de sol, et procede de fabrication d'une telle structure multicoucheInfo
- Publication number
- EP3883766A1 EP3883766A1 EP20705771.2A EP20705771A EP3883766A1 EP 3883766 A1 EP3883766 A1 EP 3883766A1 EP 20705771 A EP20705771 A EP 20705771A EP 3883766 A1 EP3883766 A1 EP 3883766A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- printing
- multilayer structure
- extruded
- complex
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
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- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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Definitions
- TITLE MULTI-LAYER STRUCTURE FOR THE REALIZATION OF A COATING OF
- the present invention relates to a multilayer structure and its manufacturing process, for producing a floor covering.
- This type of floor covering is said to be economical to produce if the wear layer and the back layer are obtained by coating and if the decoration is directly printed on the underside of the wear layer or on the upper face of the floor covering. the back layer.
- the multilayer structure comprises a printing complex consisting of a veil of glass fibers coated with a PVC plastisol gelled on its two faces, arranged between the wear layer and the back layer.
- the upper face of the printing complex, in contact with the wear layer, is then printed with a decoration by gravure printing.
- the quality of the printed decoration is poor because the glass fiber veil coated with a gelled PVC plastisol has a porous and irregular surface condition.
- the deposited ink penetrates the porosities and spreads, degrading the rendering of the decor.
- this veil of glass fibers coated with a gelled PVC plastisol adversely affects the barrier properties of the floor covering and the substances, as well as moisture present in the floor, tend to rise to the surface of the floor covering, creating stains or possibly causing the appearance of mold.
- One of the aims of the invention is therefore to provide a multilayer structure for the production of a printed flexible floor covering, the rendering of the decoration of which is improved, dimensionally stable, having barrier properties to rising damp and substances present in the covered soil and likely to be made from recycled material.
- a multilayer structure for producing a floor covering, said multilayer structure comprising a transparent upper wear layer and a printing complex comprising a reinforcing layer, the printing complex comprising successively an extruded printing layer whose upper face intended to be bonded to the upper wear layer is printed with a decoration, the reinforcing layer bonded to the underside of the extruded printing layer and a back layer , the upper face of which is linked to the reinforcement layer.
- the multilayer structure according to the invention can have any shape, in particular as a panel or slab.
- the multilayer structure according to the invention is flexible, can be wound on itself or on a mandrel, and more preferably in a roll.
- the multilayer structure according to the invention can be glued to the ground or adhesive-coated or even loose.
- extruded layer is meant a layer obtained by means of a flat die extruder.
- the back layer is preferably an extruded layer, obtained from a flat die extruder.
- lower face of a layer is meant the face of said layer facing the ground when the floor covering is in use.
- upper face of a layer is meant the face of said layer oriented towards the user when the floor covering is in use.
- the use of an extruded printing layer provides a barrier effect to the printing complex, and therefore to the multilayer structure, to substances present in the soil. This barrier effect is optimized if the back layer is also extruded.
- the printing complex helps prevent substances from rising from the ground to the surface in contact with the user. The initial appearance of the flooring is thus preserved over time.
- the coated layers gelled in a conventional printing complex have numerous air bubbles in their thickness.
- the reinforcement, whether it is a grid or a veil of glass fibers, being porous, the complex of the prior art forms a sponge capable of absorbing liquids and of causing them to migrate by capillary action in the thickness of the coating. of ground.
- extruded layers Unlike coated and gelled layers, extruded layers have little or no bubbles and limit this sponge effect.
- the extruded printing and / or support layers are non-foamed. It is particularly observed that an extruded printing and / or reverse layer with a density greater than 1.4 significantly improves the barrier effect of the printing complex.
- the extruded printing and / or reverse layer has a density greater than 1.5 so as to obtain a barrier effect against a greater number of substances.
- the upper face of the extruded printing layer is printed in order to present a decoration.
- the top face of the extruded printing layer is the opposite face of the top transparent wear layer.
- the decoration obtained is more realistic than a decoration printed on a layer of gelled plastisol, in particular because the flatness of the extruded layer is much better and makes it possible to use a higher printing resolution.
- the printing can be carried out by gravure, by inkjet printing or by any other technique well known to those skilled in the art.
- the invention finds a particular application in combination with an inkjet printed decoration of which the print resolution is higher than conventional gravure printing processes and requires the use of a perfectly flat printing medium. The decoration obtained after printing is thus not degraded by the printing complex.
- the traditional printing layers obtained by coating and then gelling a PVC plastisol necessarily include a level of liquid ingredients, and in particular a high level of plasticizers, generally greater than 60 parts per hundred parts of resin ( PCR).
- PCR parts per hundred parts of resin
- the disadvantage of this kind of composition is that liquid substances tend to exude over time and degrade the print quality.
- the level of liquids present in the composition can be reduced, in particular the level of plasticizers can be less than 60 PCR.
- the extruded layers have other advantages, in particular they make it possible to stabilize the multilayer structure by providing it with more rigidity, which also makes it possible to improve the resistance to puncturing, to maintain good resistance to creep and good walking comfort. .
- the multilayer structure is simple and economical, in particular because the composition of the back layer can include a portion of recycled materials without degrading the decor or the appearance of the multilayer structure.
- the composition of the back layer comprises recycled polyvinyl chloride.
- the back layer can comprise, in particular if it is extruded, up to 100% plasticized PVC loaded from recycled products such as PVC floor coverings, off-cuts or even edges of plastic coverings. PVC floor.
- extruded layers Unlike processes by coating, the use of extruded layers also makes it possible to carry out series of production and printing of decorations on demand or for small surfaces, especially in combination with a decoration obtained by jet printing. 'ink.
- the reuse of flat die extruders makes it possible to obtain thinner and more regular layer thicknesses due to the fine adjustments of the extrusion lips and the setting temperature. shaped, in particular for thermoplastic polymers. An extruded layer will thus have a much more regular thickness profile than a pressed or calendered layer, without requiring a sanding operation.
- the reinforcing layer can be a layer made from a mixture of thermoplastic polymer and reinforcing fibers or a reinforcing frame.
- a reinforcing layer from a composition comprising PVC and between 5 and 50 parts of glass fibers per hundred parts of resin.
- Reinforcing fibers which can be used are in particular glass fibers or polyethylene fibers.
- the reinforcing layer is a reinforcing frame.
- a reinforcing frame may be a reinforcing grid, a veil of glass fibers or a nonwoven fabric.
- the reinforcement can be a complex comprising a veil of glass fibers and a reinforcing grid or a complex comprising a nonwoven fabric and a reinforcing grid.
- the upper wear layer is transparent to visible light so that the decoration printed on the surface of the extruded printing layer can be visible through the upper wear layer.
- the top wear layer is for example made from a thermoplastic polymer, for example from polyvinyl chloride and preferably has a thickness of between 0.10 mm and 1 mm.
- the top wear layer can be obtained by extrusion, by calendering, by pressing, although it is preferably obtained by coating and then gelation of a plastisol for economic reasons.
- the top wear layer can also consist of one layer of varnish or several layers of varnish. Varnishes which can be used are in particular varnishes based on polyurethane or urethane acrylate.
- the upper wear layer is a layer of gelled plastisol, in particular a layer of gelled PVC plastisol.
- the printing complex generally has a thickness of between 0.40 mm and 2.5 mm.
- the extruded printing layer and / or the backing layer is made from a thermoplastic polymer such as polyvinyl chloride.
- the extruded imprint layer generally has a thickness of between 0.15 mm and 0.5 mm.
- the extruded printing layer is generally white and / or uniform in color.
- the composition of the extruded printing layer may in particular comprise titanium dioxide.
- the back layer generally has a thickness of between 0.15 mm and 2 mm, preferably between 0.25 mm and 1 mm.
- the composition of the back layer can comprise recycled material, in particular recycled polyvinyl chloride.
- recycled material in particular recycled polyvinyl chloride.
- the color of the back layer does not matter in rendering the decor. Recycled materials whose composition and quantity of pigments are not controlled can therefore be integrated.
- the sum of the thicknesses of the transparent top wear layer and the extruded imprint layer is equal to the thickness of the back layer. This makes it possible in particular to balance the mechanical stresses present in the multilayer structure on either side of the reinforcing layer.
- the multilayer structure comprises a support layer bonded to the underside of the printing complex.
- the support layer is for example made from polyvinyl chloride, foam or compact, and preferably has a thickness between 0.4 mm and 5 mm, preferably between 0.4 mm and 3 mm.
- the support layer can also comprise a layer of nonwoven fabric intended to be in contact with the ground and making it possible to improve the acoustic attenuation provided by the coating.
- a layer of nonwoven fabric has a thickness generally between 0.5 mm and 2 mm and a surface weight of between 80 g / m 2 and 250 g / m 2 .
- the sum of the thicknesses of the transparent top layer of wear and the extruded impression layer is equal to the sum of the thicknesses of the back layer and the backing layer. This makes it possible in particular to balance the mechanical stresses present in the multilayer structure on either side of the reinforcing layer.
- the multilayer structure preferably has a thickness of between 1 mm and 6 mm, preferably between 1.5 mm and 5 mm.
- the invention also relates to a method of manufacturing a multilayer structure according to the invention for producing a flexible floor covering, comprising at least the steps of:
- the method according to the invention comprises one or more steps consisting of:
- the method according to the invention comprises a step consisting of:
- FIG. 1 is a schematic and cross-sectional representation of a first embodiment of the multilayer structure according to the invention
- FIG. 2 is a schematic representation similar to that of Figure 1, illustrating a second embodiment of the multilayer structure according to the invention
- FIG. 3 is a schematic representation similar to that of Figure 1, illustrating a third embodiment of the multilayer structure according to the invention
- the invention relates to a multilayer structure (1) for producing a flexible floor covering having a printed decoration, the rendering of the decoration of which is improved, dimensionally stable, having barrier properties to the rise of humidity and substances present in it. floor covered, and likely to be made from recycled material.
- the multilayer structure (1) according to the invention is flexible and may have any shape, in particular as a flexible panel or slab, which can be wound on itself or on a mandrel, and preferably in a roll.
- the multilayer structure has a flexibility allowing it to meet the ISO 24344: 2008 standard. In this method, flexibility is defined by the ability of a coating or layer of a flooring to be wrapped around a 20mm mandrel, without cracks or cracks forming. Thus, the multilayer structure according to the invention subjected to this test would not exhibit breaks, cracks, cracks and other permanent defects.
- the multilayer structure (1) comprises a transparent top wear layer (2) whose main functions are the control of slippage, wear resistance, ease of cleaning and a complex printing (3) comprising a reinforcing layer (4), the printing complex (3) successively comprises an extruded printing layer (3a) whose upper face is printed with a decoration (5) and is bonded to the top wear layer (2), the reinforcement (4) bonded to the underside of the extruded printing layer (3a) and a back layer (3b), the top side of which is bonded to the reinforcement layer (4).
- the backing layer (3b) is preferably an extruded layer.
- extruded layer is meant a layer obtained by means of a flat die extruder.
- the extruded layers (3a), optionally (3b) have no or very few bubbles and limit the sponge effect of the multilayer structure (1).
- a sample of printing complex (3) according to the invention as well as a sample of printing complex obtained by coating a PVC plastisol gelled on both sides of a glass veil identical thickness are immersed in water at room temperature for 7 days. Their masses are measured before and after immersion. It is observed that the water uptake after immersion of a printing complex according to the prior art is much greater than a printing complex (3) according to the invention with equal thickness. To improve this effect, the extruded printing (3a) and / or backing (3b) layers are non-foamed.
- an extruded printing layer (3a) and / or backing (3b) whose density is greater than 1.4 significantly improves the barrier effect of the printing complex (3) and limits the water intake.
- the extruded printing (3a) and / or backing (3b) layer has a density greater than 1.5 so as to obtain a barrier effect to a greater number of substances.
- the density of the extruded printing (3a) and / or backing (3b) layer generally does not exceed 2.
- the upper face of the extruded printing layer (3a) is printed in order to present a decoration (5).
- the upper face of the extruded printing layer (3a) is the opposite face of the upper transparent wear layer (2).
- the decoration (5) obtained is more realistic than a decoration printed on a layer of gelled plastisol in particular because the flatness of the extruded layer (3a) is much better and makes it possible to use a higher printing resolution.
- the printing can be carried out by gravure, by inkjet printing or by any other technique well known to those skilled in the art.
- the decoration obtained after printing is thus not degraded by the printing complex (3).
- the invention finds a particular application in combination with a decoration printed by inkjet, the printing resolution of which is greater than the conventional gravure printing processes and the change of decoration of which is much less expensive and faster.
- the extruded layer (s) (3a), optionally (3b), have other advantages, in particular they make it possible to stabilize the multilayer structure by providing it with more rigidity, which also makes it possible to resist puncturing and to maintain good resistance to creep.
- the multilayer structure (1) is simple and economical, in particular because the back layer (3b) can include a portion of recycled materials in its composition without degrading the decor (5) or the appearance of the multilayer structure.
- the reinforcing layer (4) can be a reinforcement such as a reinforcing grid, a veil of glass fibers or a non-woven fabric, for example a veil of polyester fibers.
- the reinforcement can be a complex comprising a veil of glass fibers and a reinforcing grid or a complex comprising a nonwoven fabric and a reinforcing grid.
- the reinforcing layer (4) is a reinforcing veil of glass or polyester fibers.
- the reinforcing layer (4) may for example consist of a veil of glass fibers of approximately 1 Omhi in diameter and 10 mm in length, distributed randomly and linked together by a modified polyvinyl alcohol.
- the reinforcing layer (4) generally has a thickness of between 0.1 mm and 1 mm, preferably between 0.3 mm and 0.5 mm.
- a reinforcing web generally has a basis weight of between 30 g / m 2 and 100 g / m 2 .
- the tensile strength of a reinforcing web is generally chosen to be between 100 N / 50mm and 400 N / 50mm in the long and cross directions, measured according to the ISO 1924/2 method.
- the reinforcing layer (4) can be a reinforcing grid such as a grid of glass fibers.
- the textile threads of a reinforcing grid according to the invention are for example obtained from glass fibers, and are preferably spaced from each other between 1 mm and 5 mm, preferably between 2 mm and 4 mm. mm, depending on the longitudinal and transverse dimensions, and have a linear density of between 20 g / m and 110 g / m, advantageously between 35 g / m and 70 g / m.
- a reinforcing grid generally has a thickness of between 0.1 mm and 1 mm and a surface weight of between 30 g / m 2 and 150 g / m 2 , preferably between 45 g / m 2 and 110 g / m 2 .
- the tensile strength of a reinforcing grid according to the invention is advantageously between 400 N / 50mm and 1000 N / 50mm in the long and cross directions.
- the reinforcing layer (4) makes it possible to improve the dimensional stability of the multilayer structure (1) as well as the puncture resistance.
- the reinforcing layer (4) can be bonded to the extruded printing (3a) and reverse (3b) layers by any means, in particular by thermolamination, cold gluing, hot gluing, extrusion of ( s) the layer (s) on the reinforcing layer (4), by powdering hot-melt adhesive or by using a double-sided adhesive. If the reinforcing layer (4) is bonded by thermolamination, it directly penetrates the layers (3 a) and (3b) in their thickness, the layers (3a, 3b) impregnating the reinforcing frame (4).
- the thickness of the reinforcing layer (4) in the case of a reinforcing frame is preferably impregnated mainly in the thickness of the back layer (3b) so as to limit the deformation of the extruded printing layer. (3a) and to improve the quality of the decoration (5).
- the thickness of the reinforcement is impregnated in the thickness of the back layer (3b).
- the upper wear layer (2) is transparent to visible light so that the decoration (5) printed on the surface of the extruded printing layer (3a) can be visible through the top wear layer (2).
- the top wear layer (2) is generally made from a thermoplastic polymer, for example from polyvinyl chloride. This layer preferably has a thickness of between 0.10 mm and 1 mm.
- the top wear layer (2) can be obtained by extrusion, by calendering, by pressing although it is preferably obtained by coating and then gelation of a plastisol.
- the upper wear layer is a layer of gelled plastisol, in particular a layer of gelled PVC plastisol. This alternative makes it possible to obtain an economical multilayer structure, the construction of which is simplified.
- the composition of this layer generally comprises at least one thermoplastic polymer such as PVC and plasticizers and optionally stabilizers, lubricants, additives and pigments.
- composition of the top wear layer (2) can comprise between 20 and 70 parts of plasticizers per hundred parts of resin (PCR), the resin being the thermoplastic polymer, preferably PVC.
- PCR resin
- the resin being the thermoplastic polymer, preferably PVC.
- the top wear layer (2) may consist of a layer of varnish, for example a polyurethane or acrylic polyurethane varnish, directly coated on the upper face of the extruded printing layer (3a) previously printed with the decoration (5 ).
- the upper wear layer (2) can be bonded to the printing complex (3) by any means, in particular by thermolamination, cold gluing, hot gluing, by powdering hot-melt glue or even by using a double-sided adhesive.
- the upper wear layer (2) can also be coated on the printing complex (3), more precisely on the upper face of the extruded printing layer (3a) having at least previously printed.
- the transparent top wear layer (2) can be varnished and / or grained to improve stain and scratch resistance.
- thermoplastic polymers which can be used according to the invention are in particular polyvinyl chloride, polyethylene, polyethylene terephthalate, polypropylene, polyvinyl butyral, polymethyl methacrylate, polyethylene terephthalate glycol, polyphenylene sulfide.
- Polyvinyl chloride is however preferred for its mechanical properties and its ability to be easily recycled.
- plasticizers which can be used in each of the layers of the floor covering according to the invention are in particular plasticizers such as Diisononyl Phthalate (DINP), Diisodecyl Phthalate (DIDP), 2-Ethylhexyl Diphenyl Phosphate (DPO), dioctyl terephthalate (DOTP), 1,2-cyclohexane dicarboxylic acid diisononyl ester (DINCH), plasticizers of the benzoate family, plasticizers of the adipate family, plasticizers marketed under the brand PEVALEN ® by the company Perstorp, oil epoxidized soybean (HSE), epoxy octyl stearate (ESO), totally or partially biobased plasticizers such as, for example, plasticizers from the polysorb® ID 37 range marketed by Roquette Pharma, plasticizers from the Citrofol® range marketed by the company Jungbunzlauer International AG, or the plasticizers of the Soft-
- the printing complex (3) generally has a thickness of between 0.40 mm and 2.5 mm.
- the extruded printing layer (3a) and / or the backing layer (3b) is made from a thermoplastic polymer, for example from polyvinyl chloride.
- the extruded printing layer (3a) generally has a thickness of between 0.15 mm and 0.5 mm.
- a thickness of the extruded printing layer (3a) greater than 0.15 mm makes it possible to limit the appearance of a defect in the surface flatness of this layer intended to be printed with the decoration (5). Indeed, the presence of the reinforcing layer (4) directly bonded to the reverse side of the extruded printing layer (3a) may tend to deform it locally if its thickness is too thin.
- the extruded printing layer (3a) is generally white and / or of uniform color and is produced only from “noble” material, that is to say. that is to say that it does not contain or very little recycled material.
- the composition of the extruded printing layer (3a) can in particular comprise polyvinyl chloride, preferably not obtained from recycling, and titanium dioxide.
- the composition of the extruded printing layer (3a) comprises at least one thermoplastic polymer such as PVC and plasticizers as well as fillers and optionally stabilizers, lubricants, additives and pigments. Due to the use of non-recycled material in its composition, it may be advantageous to limit the thickness of the extruded printing layer (3a) to 0.5mm in order to obtain a printing complex (3 ) economic.
- the extruded printing layer (3 a) comprises at least a first and a second layer obtained by coextrusion using a flat die extruder, the decoration being printed on the upper face of the first coextruded layer.
- the compositions of the coextruded layers of the extruded printing layer (3a) may be different.
- the color of the first coextruded layer receiving the decoration is generally white or uniform and its composition does not include recycled material.
- the fillers which can be used according to the invention are in particular inorganic fillers, for example clays, silica, chalk, kaolin, talc, calcium carbonate.
- the composition of the extruded printing layer (3a) can comprise between 20 and 70 parts of plasticizers per hundred parts of resin (PCR), preferably between 30 and 50 PCR, the resin preferably being PVC.
- the composition of the extruded printing layer (3a) can comprise between 70 and 300 parts of fillers per hundred parts of resin (PCR), preferably between 100 and 200 PCR, the resin preferably being PVC.
- the composition of the reinforcing layer (4) can comprise between 20 and 70 parts of plasticizers per hundred parts of resin (PCR), preferably between 30 and 50 PCR, the resin preferably being PVC.
- PCR resin
- the resin preferably being PVC.
- the back layer (3b) generally has a thickness between 0.15 mm and 2 mm, preferably between 0.25 mm and 1mm.
- the composition of the back layer (3b) can comprise a thermoplastic polymer obtained from a recycled source, in particular recycled polyvinyl chloride.
- a thermoplastic polymer obtained from a recycled source, in particular recycled polyvinyl chloride.
- the color of the back layer (3b) is not important in the rendering of the decor. Recycled materials whose color and quantity of pigments are not controlled can therefore be incorporated.
- the composition of the back extruded layer may comprise between 5% and 100% recycled material, preferably between 30 and 60% recycled material.
- composition of the back layer (3b) can comprise between 20 and 70 parts of plasticizers per hundred parts of resin (PCR), preferably between 30 and 50 PCR, the resin preferably being PVC.
- PCR resin
- the resin preferably being PVC.
- composition of the reverse extruded layer (3b) can comprise between 70 and 350 parts of fillers per hundred parts of resin (PCR), preferably between 100 and 200 PCR, the resin preferably being PVC.
- PCR resin
- the resin preferably being PVC.
- the multilayer structure preferably has a thickness of between 1 mm and 6 mm, preferably between 1.5 mm and 5 mm.
- the multilayer structure comprises a support layer (6) bonded to the underside of the printing complex (3).
- Layer support (6) is for example made of polyvinyl chloride, foam or compact, and preferably has a thickness between 0.4 mm and 5 mm, preferably between 0.4 mm and 3 mm.
- the support layer (6) can be compact, or foamed and can comprise one or more layers. It can be obtained by any process well known to those skilled in the art, in particular by calendering, by pressing, by extrusion or even by coating. It can be obtained from plasticized PVC. In general and in a manner well known to those skilled in the art, a support layer (6) can be obtained from a composition comprising a polymer, for example PVC, a plasticizer, fillers and optionally stabilizers. , lubricants, additives and pigments. The support layer (6) may optionally comprise an underlayer intended to be in contact with the ground and providing acoustic or thermal functions such as a non-woven textile underlayer or a pre-adhesive sub-layer to facilitate installation. coating (1).
- the support layer (6) can be bonded to the printing complex (3) by any means, in particular by thermolamination, cold gluing, hot gluing, by powdering hot-melt glue or by using a double-sided adhesive.
- the support layer (6) can also be coated on the printing complex (3).
- the support layer (6) is, for example, when it is a compact layer, in the form of an unfoamed gelled polyvinyl chloride plastisol layer.
- the support layer (6) can, when it is a foam layer, be made from expanded polyvinyl chloride plastisol and having a density between 0.20 and 0.50, and preferably between 0.30 and 0.40.
- the support layer (6) comprises a layer of nonwoven fabric intended to be in contact with the ground.
- a nonwoven textile layer may comprise natural textile fibers such as cellulose, cotton, flax, synthetic textile fibers, in particular polyester, polyamide, polyethylene terephthalate, aramid, Nomex fibers. ®, ethylene polynaphthalate, polypropylene or even synthetic mineral textile fibers such as glass fibers or basalt fibers.
- the layer of nonwoven fabric comprises only polyester fibers because they have good acoustic properties without generating too high a manufacturing cost.
- the extruded back layer (3b) comprises at least a first back layer (7) and a second back layer (8) obtained by coextrusion by means of a flat die extruder.
- This makes it possible in particular to obtain a greater thickness of the multilayer structure (1) economically and to facilitate the mechanical stabilization of the multilayer structure, the compositions of the coextruded layers (7, 8) possibly being different.
- This alternative embodiment can also include a support layer (6) linked to the back layer (3b).
- the invention does indeed provide a multilayer structure (1) for producing a printed coating, which is stable and economical, while having barrier properties to the rise of substances present in the covered ground.
- the upper transparent wear layers (2) and support (6) can be obtained by pressing or calendering.
- the invention also relates to a method of manufacturing such a multilayer structure, remarkable in that it consists of:
- the method according to the invention comprises one or more steps consisting of:
- This alternative to the manufacturing process according to the invention is simple, fast and relatively inexpensive.
- the method can advantageously be implemented by coating with PVC Plastisol.
- extruded printing layer (3a) made from polyvinyl chloride, the composition of which comprises approximately 60 PCR of plasticizer, titanium dioxide, and 100 or 175 PCR load.
- the upper face intended to be bonded to the upper wear layer (2) is printed with a decoration (5) by a photogravure process.
- the thickness of the web (4) before it is bonded to the multilayer structure is between 0.3 mm and 0.45 mm.
- a reverse extruded layer (3b) made from polyvinyl chloride and whose composition includes about 60 PCR plasticizer and 100 or 175 PCR load.
- the thicknesses of the different layers as a function of the variant embodiments of the printing complex (3) are given in Table 1 below. These variants are compared with a printing complex of the prior art obtained by coating two faces with a veil of glass fibers similar to that used in the embodiments of the invention.
- the underside of the veil is coated with a layer of plastisol backing of 0.65mm gelled PVC and the upper side of the veil is coated with a printing layer of 0.18mm gelled PVC plastisol.
- the glass veil is completely impregnated in the thicknesses of the coated or extruded layers (3a, 3b), its own thickness is therefore not taken into account. in the total thickness.
- the variant embodiments show that the charge rate influences the density of the printing complex (3) and therefore improves the barrier effect of the floor covering (1) ⁇
- top wear layer (2) obtained by gelation of an unfilled PVC plastisol whose composition includes approximately 60 PCR of DINCE1.
- the top wear layer (2) is covered with a crosslinked polyurethane varnish (not shown).
- the thickness of the web (4) before it is bonded to the multilayer structure is between 0.3 and 0.45 mm.
- a support layer (6) obtained by gelation of a plasticized (60 PCR) and loaded (150 PCR) PVC plastisol.
- compositions of the print extruded (3a) and reverse extruded (3b) layers comprise approximately 60 PCR of DINCH and 100 PCR of charge.
- top wear layers (2), extruded print (3a), the fiberglass veil (4), the back layer (3b) and the backing layer (6) are bonded together to form the structure multilayer (1). More precisely, it is first obtained a printing complex (3) comprising successively the extruded printing layer (3a) printed with a decoration (5), the veil of glass fibers (4) and the extruded layer. reverse side (3b) bound together to form the printing complex (3).
- the complex (3) is then coated on its printed upper face with a layer of gelled PVC plastisol so as to obtain the upper transparent wear layer (2).
- the complex (3) is also coated on its underside with a layer of gelled PVC plastisol so as to obtain the support layer (6) intended to be in contact with the ground.
- the thicknesses of the different layers as a function of the variant embodiments are given in Table 2 below.
- the support layer (6) is foamed or not depending on the variants so as to provide more or less walking comfort and acoustic attenuation.
- the glass veil (4) is completely impregnated in the thicknesses of the extruded layers (3a, 3b) and its own thickness is not taken into account.
- the two variants of the multilayer structure (1) obtained for the realization of a flexible floor covering have a printed decoration whose decoration rendering is superior to that of a traditional printing complex obtained by coating.
- the resulting floor coverings have values of residual static puncture (ISO 24343-1), elongation at break (ISO 1421), load at break (ISO 527), Tear resistance (ISO 4674-1 Method B) curvature and dimensional stability 6hr at 80 ° C (NF EN ISO 23999) in accordance with expectations.
- a test consisting in depositing a few centiliters of water in contact with the underside of the support layer (6) and aiming to measure the propagation of water through the multilayer structure (1) shows that the water does not reach not the top wear layer unlike to a product comprising a traditional printing complex obtained by coating with a PVC plastisol on both sides of a veil of glass fibers.
- the printing complex according to the invention and the floor covering obtained exhibit barrier properties to the rise in humidity and substances present in the covered floor.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Laminated Bodies (AREA)
- Floor Finish (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1900512A FR3091831B1 (fr) | 2019-01-22 | 2019-01-22 | Structure multicouche pour la réalisation d’un revêtement de sol, et procédé de fabrication d’une telle structure multicouche |
PCT/FR2020/050040 WO2020152408A1 (fr) | 2019-01-22 | 2020-01-14 | Structure multicouche pour la realisation d'un revetement de sol, et procede de fabrication d'une telle structure multicouche |
Publications (1)
Publication Number | Publication Date |
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EP3883766A1 true EP3883766A1 (fr) | 2021-09-29 |
Family
ID=67383861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20705771.2A Pending EP3883766A1 (fr) | 2019-01-22 | 2020-01-14 | Structure multicouche pour la realisation d'un revetement de sol, et procede de fabrication d'une telle structure multicouche |
Country Status (3)
Country | Link |
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EP (1) | EP3883766A1 (fr) |
FR (1) | FR3091831B1 (fr) |
WO (1) | WO2020152408A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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FR3123828A1 (fr) | 2021-06-15 | 2022-12-16 | Saint-Gobain Adfors | Armature de renfort en fibres minérales pour dalles souples de revêtement de sol |
CN114311905A (zh) * | 2021-12-30 | 2022-04-12 | 帝高力装饰材料(江苏)有限公司 | 一种环保型非pvc地板的制备方法 |
US20240034034A1 (en) * | 2022-07-29 | 2024-02-01 | Gerflor | Multi-layer structure for a reinforced, recyclable floor covering |
FR3138348A1 (fr) * | 2022-07-29 | 2024-02-02 | Gerflor | Structure multicouche pour la réalisation d’un revêtement de sol renforcé et recyclable |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US8728603B2 (en) * | 2006-12-11 | 2014-05-20 | Ulrich Windmöller Consulting GmbH | Floor panel |
US9446564B2 (en) * | 2009-03-03 | 2016-09-20 | Schneller Llc | Polyurethane based rigid flooring laminate |
FR3063503B1 (fr) * | 2017-03-06 | 2019-03-22 | Gerflor | Panneau acoustique pour la realisation d'un revetement de sol |
-
2019
- 2019-01-22 FR FR1900512A patent/FR3091831B1/fr active Active
-
2020
- 2020-01-14 WO PCT/FR2020/050040 patent/WO2020152408A1/fr unknown
- 2020-01-14 EP EP20705771.2A patent/EP3883766A1/fr active Pending
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FR3091831A1 (fr) | 2020-07-24 |
FR3091831B1 (fr) | 2020-12-25 |
WO2020152408A1 (fr) | 2020-07-30 |
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