EP1266066B1 - Method for producing a plastic floor covering - Google Patents
Method for producing a plastic floor covering Download PDFInfo
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- EP1266066B1 EP1266066B1 EP01909902A EP01909902A EP1266066B1 EP 1266066 B1 EP1266066 B1 EP 1266066B1 EP 01909902 A EP01909902 A EP 01909902A EP 01909902 A EP01909902 A EP 01909902A EP 1266066 B1 EP1266066 B1 EP 1266066B1
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- layer
- complex
- powder
- heat treatment
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/02—Flooring or floor layers composed of a number of similar elements
- E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/06—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyvinylchloride or its copolymerisation products
- D06N3/08—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with polyvinylchloride or its copolymerisation products with a finishing layer consisting of polyacrylates, polyamides or polyurethanes or polyester
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N7/00—Flexible sheet materials not otherwise provided for, e.g. textile threads, filaments, yarns or tow, glued on macromolecular material
- D06N7/0005—Floor covering on textile basis comprising a fibrous substrate being coated with at least one layer of a polymer on the top surface
- D06N7/0039—Floor covering on textile basis comprising a fibrous substrate being coated with at least one layer of a polymer on the top surface characterised by the physical or chemical aspects of the layers
- D06N7/0057—Layers obtained by sintering or glueing the granules together
Definitions
- the present invention relates to a method for producing a coating plastic floor, which not only provides very good surface characteristics, but also not to alter the characteristics of the basic structure constituting said covering.
- such floor coverings consist of a basic thermoplastic structure, in particular plasticized PVC, obtained by pressing or calendering.
- This basic structure can possibly be reinforced by a textile structure embedded in the mass of the material.
- this basic structure can be associated with an underlay, for example a foam underlay.
- the visible face is covered with a finishing layer giving all specific properties such as UV resistance, resistance to fouling, scratching, traffic, abrasion, black traces of shoes (scuffing), to cigarette burn.
- Such coatings can exhibit resistance to specific stains that may occur at the place of use, for example in the hospital sector (alcoholic iodine stains, alcoholic eosin, etc.).
- a composition is based on a thermoplastic material, PVC optionally loaded, or with a thermosetting material in crosslinked polyurethane in particular.
- the thermoplastic layer based on PVC of the surface complex is obtained from a PVC composition plastisol (PVC resin, plasticizer, and stabilizing and rheology additives conventional), this surface layer being colored or transparent and having a thickness between 0.1 and 2 mm and preferably 0.2 to 0.8 mm.
- PVC composition plastisol PVC resin, plasticizer, and stabilizing and rheology additives conventional
- This plastisol can also be produced using acrylic resin in a plasticizer.
- the plastisol is then pregelled by heat treatment at a temperature between 120 ° C and 130 ° C for thirty to sixty seconds per pass in a hot or infrared oven.
- the outer layer associated with this PVC-based layer is produced from a thermosetting powder composition having cross-linking characteristics (hardening) of short duration, between a and a maximum of seven minutes at 210 ° C.
- the formulation of this powder is such that it allows adhesion to the plasticized polymer (PVC) without altering the flexibility qualities, the hardener being also non-aggressive towards PVC.
- PVC plasticized polymer
- thermosetting powder is preferably carried out by electrostatic dusting at a rate of 20 to 200 g / m 2 .
- This powder is transformed into a liquid film by a heat treatment achieved by combining the action of an infrared radiation ramp followed by a passage through a hot air tunnel.
- This heat treatment depends on the nature of the powder thermosetting, infrared radiation bringing the latter to a temperature between 110 ° C and 200 ° C for a time between one at thirty seconds, while the hot air treatment is carried out at a temperature can vary from 80 to 120 ° C for a period of thirty seconds at one minute.
- the surface film of thermosetting polymer preferably based on copolyester, has a thickness of between 15 and 150 ⁇ m and preferably between 30 and 80 ⁇ m.
- Such a basic structure (1) can be reinforced by a layer of material textile, and may have on its reverse side, an undercoat such as a layer foam.
- the surface coating of the base complex (1) thus formed is produced by depositing on the upper face of this support (1), a regular layer (2) of a plastisol based on a thermoplastic, PVC in particular, but which can also be an acrylic plastisol.
- This plastisol deposition is carried out in a conventional manner by passing the support (1) on a roller (3) associated with a doctor blade (4).
- the plastisol layer (2) has a thickness of between 0.2 and 0.8 mm.
- the whole is subjected to a pre-gelling heat treatment bringing the material to a temperature between 120 and 130 ° C. for 30 to 60 seconds by passage through a hot air or infrared oven (5).
- thermosetting powder composition (7) deposited on this layer of pre-gelified and therefore hardened plastisol (2), a thermosetting powder composition (7).
- This deposition is carried out by electrostatic dusting by means of a dusting system which can be a hopper (6) associated with an electrostatic charge assembly or an electrostatic spraying system suitable for flat dusting.
- a dusting system which can be a hopper (6) associated with an electrostatic charge assembly or an electrostatic spraying system suitable for flat dusting.
- This deposition is carried out at a rate of 20 to 200 g / m 2 , preferably between 40 and 100 g / m 2 .
- the powder is then transformed into a continuous liquid film (9) by a heat treatment (8).
- This heat treatment combines both the action of a infrared ramp causing the powder to melt, followed by passing through a hot air tunnel resulting in a smoothing of the film formed.
- infrared radiation carries this last at a temperature between 110 ° C and 200 ° C, for a period from one to thirty seconds, while the passage in hot air, brought to a temperature between 80 and 120 ° C, is carried out for a period of thirty seconds to a minute.
- the film thickness is between 15 ⁇ m and 150 ⁇ m, preferably between 30 and 80 ⁇ m.
- the complex thus formed is then subjected to a heat treatment at the interior of a hot air oven (11), resulting in gelation and final crosslinking of the two constituents (2,9) of the surface layer.
- the temperature inside the oven is set between 200 ° C and 210 ° C, the duration of treatment being between one to seven minutes.
- the complex thus formed is then received, for example in the form of a winding.
- Figure 2 shows in section, schematically, the general structure of such a floor covering, therefore comprising a base support (1) covered with a transparent two-layer structure consisting, on the one hand, of a layer thermoplastic (2), preferably plasticized PVC, associated with a film (9) based of a thermosetting material, in particular polyester.
- a layer thermoplastic (2) preferably plasticized PVC
- the different layers are intimately linked with each other without interpenetration constituents of one of the layers in the adjacent layer, which allows keep all the characteristics of each layer.
- the surface coating of a basic structure (1) previously produced comprising a foam underlay (la) associated with the back of a sheet (1b) PVC possibly reinforced by a textile structure.
- Such a support (1) has a thickness of 15 mm.
- the assembly is then subjected to a heat treatment by passing under a infrared ramp (5) bringing the material to a temperature of 110 ° C causing the pre-gelation, therefore the hardening of this layer.
- the complex is subjected to a second heat treatment (8) combining the action of an infrared ramp bringing the material to 120 ° C for ten seconds, followed by treatment in a hot air tunnel brought to 95 ° C for a period of forty seconds, making it possible to obtain a film (9) having a thickness of the order 50 ⁇ m.
- the coating thus formed then passes through a hot air oven (11) brought to a temperature of 200 ° C, the treatment time being 3 minutes.
- a floor covering is obtained as illustrated in the Figure 2, having a total thickness of 2 mm.
- Such a floor covering has very good surface properties, especially with regard to resistance to fouling, scratching, abrasion, traffic, UV.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Textile Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laminated Bodies (AREA)
- Floor Finish (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
La présente invention a trait à un procédé pour la réalisation d'un revêtement de sol en matière plastique permettant d'obtenir non seulement de très bonnes caractéristiques de surface, mais également de ne pas altérer les caractéristiques de la structure de base constituant ledit revêtement.The present invention relates to a method for producing a coating plastic floor, which not only provides very good surface characteristics, but also not to alter the characteristics of the basic structure constituting said covering.
Il a été proposé depuis fort longtemps de réaliser des revêtements de sol souples, en matière plastique.It has long been proposed to produce floor coverings flexible, made of plastic.
D'une manière générale, de tels revêtements de sol sont constitués d'une structure de base thermoplastique, notamment en PVC plastifié, obtenue par pressage ou calandrage. Cette structure de base peut éventuellement être renforcée par une structure textile noyée dans la masse de la matière.In general, such floor coverings consist of a basic thermoplastic structure, in particular plasticized PVC, obtained by pressing or calendering. This basic structure can possibly be reinforced by a textile structure embedded in the mass of the material.
Par ailleurs, pour améliorer le confort ou conférer des caractéristiques spécifiques au revêtement en vue de son utilisation, cette structure de base peut être associée à une sous-couche, par exemple une sous-couche en mousse.In addition, to improve comfort or confer characteristics specific to the coating for use, this basic structure can be associated with an underlay, for example a foam underlay.
De plus, la face apparente est recouverte d'une couche de finition conférant à l'ensemble des propriétés spécifiques telles que résistance aux UV, tenue à l'encrassement, à la rayure, au trafic, à l'abrasion, aux traces noires de chaussures (scuffing), à la brûlure de cigarette.In addition, the visible face is covered with a finishing layer giving all specific properties such as UV resistance, resistance to fouling, scratching, traffic, abrasion, black traces of shoes (scuffing), to cigarette burn.
Il est souhaitable que de tels revêtements puissent présenter une résistance à des taches spécifiques qui peuvent se produire sur le lieu d'utilisation, par exemple dans le domaine hospitalier (taches d'iode alcoolique, éosine alcoolique..).It is desirable that such coatings can exhibit resistance to specific stains that may occur at the place of use, for example in the hospital sector (alcoholic iodine stains, alcoholic eosin, etc.).
Enfin, il est également souhaitable de supprimer les émissions de composés organiques volatiles, ce qui peut être obtenu par effet barrière de la couche supérieure de surface. Finally, it is also desirable to suppress emissions of compounds volatile organic matter, which can be obtained by the barrier effect of the layer upper surface.
Pour réaliser la couche de surface de tels revêtements de sol, il a été envisagé depuis fort longtemps, comme cela ressort notamment du FR 2 341 021, d'utiliser une composition soit à base d'une matière thermoplastique, PVC éventuellement chargé, soit d'une matière thermodurcissable en polyuréthanne réticulé notamment.To achieve the surface layer of such floor coverings, it has been envisaged for a very long time, as is apparent in particular from FR 2 341 021, to use a composition is based on a thermoplastic material, PVC optionally loaded, or with a thermosetting material in crosslinked polyurethane in particular.
Le procédé décrit dans ce document est cependant complexe à mettre en oeuvre.The process described in this document is however complex to implement. artwork.
De très nombreuses propositions ont également été faites pour réaliser des couches de surface réalisées à partir de polymères synthétiques différents comme cela ressort de l'US 4 337 296, de l'EP 794 281, du GB 2 285 012.Many proposals have also been made to carry out surface layers made from different synthetic polymers such as this is evident from US 4,337,296, EP 794,281, GB 2,285,012.
Dans toutes ces propositions, le problème qui se pose est celui de pouvoir réaliser une bonne adhérence entre la couche de surface en matériau thermodurcissable et la structure de base thermoplastique, ainsi que de ne pas altérer les caractéristiques de cette structure de base.In all these propositions, the problem which arises is that of being able achieve good adhesion between the surface layer of material thermosetting and the basic thermoplastic structure, as well as not alter the characteristics of this basic structure.
Or, on a trouvé, et c'est ce qui fait l'objet de la présente invention, un procédé perfectionné qui permet de résoudre l'ensemble de ces problèmes.Now, we have found, and this is what is the subject of the present invention, a method perfected which solves all of these problems.
D'une manière générale, le procédé conforme à l'invention pour la réalisation d'un revêtement de sol consiste :
- dans une première phase opératoire, à réaliser de manière conventionnelle une structure de base en PVC plastifié, par pressage, calandrage, extrusion ou enduction, éventuellement renforcée par une armature textile et/ou associée à une sous-couche additionnelle ; puis
- dans une deuxième phase opératoire, à réaliser un revêtement de surface constitué par un complexe bicouche comportant une couche thermoplastique revêtue d'un film à base d'un polymère thermodurcissable.
- in a first operational phase, to produce in a conventional manner a basic structure in plasticized PVC, by pressing, calendering, extrusion or coating, possibly reinforced by a textile reinforcement and / or associated with an additional undercoat; then
- in a second operational phase, producing a surface coating consisting of a two-layer complex comprising a thermoplastic layer coated with a film based on a thermosetting polymer.
Dans le procédé conforme à l'invention, le complexe bicouche constituant le revêtement de surface est formé, soit en continu et en ligne avec la réalisation de la structure de base, soit sur un support transfert permettant un complexage lors d'une phase ultérieure par :
- dépôt sur la face supérieure du complexe de base, ou sur un support transfert, d'une couche de plastisol de PVC, transparent ou coloré, que l'on prégélifie par traitement thermique ;
- en continu, recouvrement de la couche de plastisol pré-gélifiée d'une couche de poudre thermodurcissable suivi d'un traitement thermique transformant ladite poudre en un film continu liquide ;
- passage du complexe ainsi formé dans un four à air chaud, entraínant la gélification et la réticulation finale des deux constituants de la couche de surface, l'ensemble étant ensuite éventuellement grainé et réceptionné.
- deposition on the upper face of the base complex, or on a transfer support, of a layer of transparent or colored PVC plastisol, which is pre-gelified by heat treatment;
- continuously covering the layer of pre-gelled plastisol with a layer of thermosetting powder followed by a heat treatment transforming said powder into a continuous liquid film;
- passage of the complex thus formed in a hot air oven, causing gelling and final crosslinking of the two constituents of the surface layer, the assembly then possibly being grained and received.
Pour la mise en oeuvre de ce procédé, la couche thermoplastique à base de PVC du complexe de surface, est obtenue à partir d'une composition de PVC plastisol (résine PVC, plastifiant, et additifs stabilisants et de rhéologie conventionnels), cette couche de surface étant colorée ou transparente et ayant une épaisseur comprise entre 0,1 et 2 mm et préférentiellement 0,2 à 0,8 mm. Ce plastisol peut également être réalisé à l'aide de résine acrylique dans un plastifiant.For the implementation of this process, the thermoplastic layer based on PVC of the surface complex, is obtained from a PVC composition plastisol (PVC resin, plasticizer, and stabilizing and rheology additives conventional), this surface layer being colored or transparent and having a thickness between 0.1 and 2 mm and preferably 0.2 to 0.8 mm. This plastisol can also be produced using acrylic resin in a plasticizer.
Le plastisol est ensuite prégélifié par traitement thermique à une température comprise entre 120°C et 130°C pendant trente à soixante secondes par passage dans un four à ai chaud ou infrarouge.The plastisol is then pregelled by heat treatment at a temperature between 120 ° C and 130 ° C for thirty to sixty seconds per pass in a hot or infrared oven.
La couche externe associée à cette couche à base de PVC est, quant à elle, réalisée à partir d'une composition de poudre thermodurcissable présentant des caractéristiques de réticulation (durcissement) de courte durée, comprise entre une et sept minutes au maximum à 210°C.The outer layer associated with this PVC-based layer is produced from a thermosetting powder composition having cross-linking characteristics (hardening) of short duration, between a and a maximum of seven minutes at 210 ° C.
La formulation de cette poudre est telle qu'elle permette l'adhésion sur le polymère plastifié (PVC) sans altérer les qualités de souplesse, le durcisseur étant également non agressif vis-à-vis du PVC.The formulation of this powder is such that it allows adhesion to the plasticized polymer (PVC) without altering the flexibility qualities, the hardener being also non-aggressive towards PVC.
Une telle poudre peut être obtenue à partir d'une composition comprenant :
- une résine polyester hydroxylée, une résine polyester carboxylée, une résine polyuréthanne, une résine hybride polyester/epoxy... ;
- un réticulant de type glycidylester, un réticulant de type hydroxyalkylamide, un réticulant de type isocyanate bloqué ou dimérisée.
- a hydroxylated polyester resin, a carboxylated polyester resin, a polyurethane resin, a polyester / epoxy hybrid resin, etc .;
- a glycidylester type crosslinker, a hydroxyalkylamide type crosslinker, a blocked or dimerized isocyanate type crosslinker.
Le dépôt de la poudre thermodurcissable est de préférence réalisé par saupoudrage électrostatique à raison de 20 à 200 g/m2.The deposition of the thermosetting powder is preferably carried out by electrostatic dusting at a rate of 20 to 200 g / m 2 .
Cette poudre est transformée en un film liquide par un traitement thermique réalisé en combinant l'action d'une rampe à rayonnement infrarouge suivie d'un passage dans un tunnel à air chaud.This powder is transformed into a liquid film by a heat treatment achieved by combining the action of an infrared radiation ramp followed by a passage through a hot air tunnel.
Une telle manière de procéder permet de former un film très régulier et continu qui s'explique par le fait que le rayonnement infrarouge provoque une fusion rapide de la poudre et que l'action de l'air chaud entraíne le lissage du film.Such a procedure makes it possible to form a very regular film and which is explained by the fact that infrared radiation causes a rapid melting of the powder and the action of hot air results in the smoothing of the film.
Ce traitement thermique est fonction de la nature de la poudre thermodurcissable, le rayonnement infrarouge portant cette dernière à une température comprise entre 110°C et 200°C pendant une durée comprise entre une à trente secondes, alors que le traitement par air chaud est effectué à une température pouvant varier de 80 à 120°C pendant une durée de trente secondes à une minute.This heat treatment depends on the nature of the powder thermosetting, infrared radiation bringing the latter to a temperature between 110 ° C and 200 ° C for a time between one at thirty seconds, while the hot air treatment is carried out at a temperature can vary from 80 to 120 ° C for a period of thirty seconds at one minute.
Après traitement, le film de surface en polymère thermodurcissable, de préférence à base de copolyester, a une épaisseur comprise entre 15 et 150 µm et de préférence entre 30 et 80 µm.After treatment, the surface film of thermosetting polymer, preferably based on copolyester, has a thickness of between 15 and 150 μm and preferably between 30 and 80 µm.
L'invention et les avantages qu'elle apporte sera cependant mieux comprise grâce à la description qui suit et qui est illustrée par les schémas annexés dans lesquels :
- la figure 1 est une vue schématique d'une ligne de production d'un revêtement de sol conforme à l'invention ;
- la figure 2 est une vue schématique en perspective illustrant la structure générale d'un tel revêtement de sol,
- Figure 1 is a schematic view of a production line for a floor covering according to the invention;
- FIG. 2 is a schematic perspective view illustrating the general structure of such a floor covering,
Dans la suite de la description, l'invention sera décrite pour la réalisation d'un revêtement de surface en continu avec la production de la structure de base du revêtement de sol, étant entendu que cette couche de surface pourrait être réalisée lors d'une phase séparée sur un support transfert pour être associée à la couche de base lors de la formation de cette dernière.In the following description, the invention will be described for the realization of a continuous surface coating with the production of the basic structure of the floor covering, it being understood that this surface layer could be produced during a separate phase on a transfer support to be associated with the layer of basis during the formation of the latter.
En se référant aux figures annexées, dans une première phase opératoire, on réalise, de manière conventionnelle, par pressage, calandrage, extrusion ou enduction, une structure de base (1) en PVC.Referring to the appended figures, in a first operational phase, we conventionally produces by pressing, calendering, extrusion or coating, a basic structure (1) in PVC.
Une telle structure de base (1) peut être renforcée par une couche en matière textile, et peut comporter sur sa face envers, une sous-couche telle qu'une couche de mousse (la).Such a basic structure (1) can be reinforced by a layer of material textile, and may have on its reverse side, an undercoat such as a layer foam.
Conformément à l'invention, le revêtement de surface du complexe de base (1) ainsi formé, est réalisé en déposant sur la face supérieure de ce support (1), une couche régulière (2) d'un plastisol à base d'une matière thermoplastique, PVC notamment, mais qui peut être aussi un plastisol acrylique.According to the invention, the surface coating of the base complex (1) thus formed, is produced by depositing on the upper face of this support (1), a regular layer (2) of a plastisol based on a thermoplastic, PVC in particular, but which can also be an acrylic plastisol.
Ce dépôt de plastisol est réalisé de manière conventionnelle en faisant passer le support (1) sur un rouleau (3) associé à une racle (4).This plastisol deposition is carried out in a conventional manner by passing the support (1) on a roller (3) associated with a doctor blade (4).
La couche de plastisol (2) a une épaisseur comprise entre 0,2 et 0,8 mm.The plastisol layer (2) has a thickness of between 0.2 and 0.8 mm.
En continu, on soumet l'ensemble à un traitement thermique de pré-gélification portant la matière à une température comprise entre 120 et 130°C pendant 30 à 60 secondes par passage dans un four à air chaud ou infrarouge (5).Continuously, the whole is subjected to a pre-gelling heat treatment bringing the material to a temperature between 120 and 130 ° C. for 30 to 60 seconds by passage through a hot air or infrared oven (5).
On dépose ensuite sur cette couche de plastisol (2) prégélifiée et donc durcie, une composition de poudre thermodurcissable (7).Then deposited on this layer of pre-gelified and therefore hardened plastisol (2), a thermosetting powder composition (7).
Ce dépôt est réalisé par saupoudrage électrostatique au moyen d'un système de poudrage qui peut être une trémie (6) associée à un ensemble de charge électrostatique ou un système de pistoletage électrostatique adapté au poudrage à plat. Ce dépôt est réalisé à raison de 20 à 200 g/m2, de préférence entre 40 et 100 g/m2.This deposition is carried out by electrostatic dusting by means of a dusting system which can be a hopper (6) associated with an electrostatic charge assembly or an electrostatic spraying system suitable for flat dusting. This deposition is carried out at a rate of 20 to 200 g / m 2 , preferably between 40 and 100 g / m 2 .
La poudre est ensuite transformée en un film continu liquide (9) par un traitement thermique (8). Ce traitement thermique combine à la fois l'action d'une rampe à infrarouge entraínant la fusion de la poudre, suivie d'un passage dans un tunnel à air chaud entraínant un lissage du film formé.The powder is then transformed into a continuous liquid film (9) by a heat treatment (8). This heat treatment combines both the action of a infrared ramp causing the powder to melt, followed by passing through a hot air tunnel resulting in a smoothing of the film formed.
En fonction de la nature de la poudre, le rayonnement infrarouge porte cette dernière à une température comprise entre 110°C et 200°C, et ce pendant une durée de une à trente secondes, alors que le passage dans l'air chaud, porté à une température comprise entre 80 et 120°C, est effectué pendant une durée de trente secondes à une minute.Depending on the nature of the powder, infrared radiation carries this last at a temperature between 110 ° C and 200 ° C, for a period from one to thirty seconds, while the passage in hot air, brought to a temperature between 80 and 120 ° C, is carried out for a period of thirty seconds to a minute.
L'épaisseur du film est comprise entre 15 µm et 150 µm, de préférence entre 30 et 80 µm.The film thickness is between 15 µm and 150 µm, preferably between 30 and 80 µm.
Le complexe ainsi formé est ensuite soumis à un traitement thermique à l'intérieur d'un four à air chaud (11), entraínant la gélification et réticulation finale des deux constitutants (2,9) de la couche de surface.The complex thus formed is then subjected to a heat treatment at the interior of a hot air oven (11), resulting in gelation and final crosslinking of the two constituents (2,9) of the surface layer.
La température à l'intérieur du four est réglée entre 200°C et 210°C, la durée de traitement étant comprise entre une à sept minutes.The temperature inside the oven is set between 200 ° C and 210 ° C, the duration of treatment being between one to seven minutes.
Le complexe ainsi formé est ensuite réceptionné, par exemple sous la forme d'un enroulement.The complex thus formed is then received, for example in the form of a winding.
La figure 2 montre en coupe, de manière schématique, la structure générale d'un tel revêtement de sol, comportant donc un support de base (1) recouvert d'une structure transparente bicouche constituée, d'une part, d'une couche thermoplastique (2), de préférence en PVC plastifié, associée à un film (9) à base d'une matière thermodurcissable, polyester notamment.Figure 2 shows in section, schematically, the general structure of such a floor covering, therefore comprising a base support (1) covered with a transparent two-layer structure consisting, on the one hand, of a layer thermoplastic (2), preferably plasticized PVC, associated with a film (9) based of a thermosetting material, in particular polyester.
Ainsi que cela ressort de cette figure, dans un tel complexe, les différentes couches sont intimement liées les unes aux autres sans cependant interpénétration des constituants de l'une des couches dans la couche adjacente, ce qui permet de conserver toutes les caractéristiques de chacune des couches.As can be seen from this figure, in such a complex, the different layers are intimately linked with each other without interpenetration constituents of one of the layers in the adjacent layer, which allows keep all the characteristics of each layer.
Au moyen d'une installation telle que décrite précédemment, on réalise le revêtement de surface d'une structure de base (1) préalablement réalisée, comprenant une sous-couche en mousse (la) associée à l'envers d'une feuille (1b) en PVC éventuellement renforcé par une structure textile.By means of an installation as described above, the surface coating of a basic structure (1) previously produced, comprising a foam underlay (la) associated with the back of a sheet (1b) PVC possibly reinforced by a textile structure.
Un tel support (1) a une épaisseur de 15 mm.Such a support (1) has a thickness of 15 mm.
A la surface de ce support (1), on dépose à la racle (4), une couche de 625 g/m2 d'un plastisol présentant une viscosité de 10 Pa.s (10 000 cPs) pour un cisaillement de 100 s-1 à l'aide de l'équipement Rheomat ayant la composition suivante :
- chlorure de polyvinyle (100 parties)
- plastifiant de type phtalate de dioctyle (DOP) à 40 pcr
- stabilisant de type butylétain soufré à 2 pcr
- diluant.
- polyvinyl chloride (100 parts)
- dioctyl phthalate plasticizer (DOP) at 40 pcr
- 2 pcr sulfur butyltin stabilizer
- diluent.
On forme ainsi à la surface du support (1) une couche ayant une épaisseur de 0,5 mm.There is thus formed on the surface of the support (1) a layer having a thickness of 0.5 mm.
L'ensemble est alors soumis à un traitement thermique par passage sous une rampe à infrarouge (5) portant la matière à une température de 110°C entraínant la pré-gélification, donc le durcissement de cette couche.The assembly is then subjected to a heat treatment by passing under a infrared ramp (5) bringing the material to a temperature of 110 ° C causing the pre-gelation, therefore the hardening of this layer.
En aval de la rampe à infrarouge, on dépose, à raison de 60 g/m2, une poudre thermodurcissable constituée par une composition à base de copolyester comprenant :
- résine de type polyester hydroxylé
- durcisseur de type isocyanate dimérisée.
- hydroxylated polyester type resin
- dimerized isocyanate hardener.
Le complexe est soumis à un second traitement thermique (8) combinant l'action d'une rampe à infrarouge portant la matière à 120°C pendant dix secondes, suivie d'un traitement dans un tunnel à air chaud porté à 95°C pendant une durée de quarante secondes, permettant d'obtenir un film (9) ayant une épaisseur de l'ordre de 50 µm.The complex is subjected to a second heat treatment (8) combining the action of an infrared ramp bringing the material to 120 ° C for ten seconds, followed by treatment in a hot air tunnel brought to 95 ° C for a period of forty seconds, making it possible to obtain a film (9) having a thickness of the order 50 µm.
Le revêtement ainsi formé passe ensuite dans un four à air chaud (11) porté à une température de 200°C, la durée de traitement étant de 3 minutes.The coating thus formed then passes through a hot air oven (11) brought to a temperature of 200 ° C, the treatment time being 3 minutes.
En sortie de l'installation, on obtient un revêtement de sol tel que illustré à la figure 2, ayant une épaisseur totale de 2 mm.At the outlet of the installation, a floor covering is obtained as illustrated in the Figure 2, having a total thickness of 2 mm.
Un tel revêtement de sol présente de très bonnes propriétés de surface, notamment en ce qui concerne la tenue à l'encrassement, à la rayure, à l'abrasion, au trafic, aux UV.Such a floor covering has very good surface properties, especially with regard to resistance to fouling, scratching, abrasion, traffic, UV.
Il présente par ailleurs une très bonne résistance aux taches.It also has very good stain resistance.
Claims (4)
- Method for producing a floor covering which consists:in a first operating phase, in conventionally producing a base structure (1b) made of plasticized PVC, by pressing, calendering, extrusion or coating, the said base structure being optionally strengthened by a textile reinforcement and combined with an additional backing (la); thenin a second operating phase, in producing a surface coating consisting of a two-layer complex comprising a thermoplastic layer coated with a film based on a thermoset polymer,depositing, on the upper face of the base complex or on a transfer support, a layer (2) of transparent or coloured PVC plastisol, which is pregelled by heat treatment;continuously covering the pregelled plastisol layer (2) with a layer of thermosetting powder (7), followed by a heat treatment (8) which converts the said powder into a continuous liquid film (9); andpassing the complex thus formed through a hot-air oven (11), resulting in the gelling and the final crosslinking of the two constituents (2, 9) of the surface layer.
- Method according to Claim 1, characterized in that the heat treatment (8), which converts the powder into a continuous liquid film (9), is carried out by the combination of the action of an infrared rail, causing the said powder to melt, and then of a treatment in a hot-air oven, which smooths out the film formed.
- Method according to one of Claims 1 and 2, characterized in that:the thickness of the plastisol layer (2) is between 0.2 and 0.8 mm;the thermosetting powder being deposited by electrostatic powder coating in an amount ranging from 20 to 200 g/m2;the continuous liquid film formed after the heat treatment (8) has a thickness of between 15 µm and 150 µm and preferably between 30 and 80 µm.
- Method according to one of Claims 1 to 3, characterized in that:the first heat treatment for pregelling is carried out at a temperature of between 120 and 130°C for 30 to 60 seconds by passage through a hot-air or infrared oven (5);the second heat treatment (8), forming the film (9), is produced by the action of an infrared rail heating the powder to a temperature of between 110 and 200°C for one to thirty seconds, the hot-air treatment being carried out at a temperature between 80 and 120°C for a time of thirty seconds to one minute; andthe final treatment, for gelling and crosslinking the complex, is carried out inside a hot-air oven (11) heated to a temperature of 200°C, the treatment time being 3 minutes.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0002538 | 2000-02-29 | ||
FR0002538A FR2805549B1 (en) | 2000-02-29 | 2000-02-29 | PLASTIC FLOOR COVERING AND METHOD FOR OBTAINING SAME |
PCT/FR2001/000557 WO2001064996A1 (en) | 2000-02-29 | 2001-02-27 | Method for producing a plastic floor covering |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1266066A1 EP1266066A1 (en) | 2002-12-18 |
EP1266066B1 true EP1266066B1 (en) | 2003-10-08 |
Family
ID=8847527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01909902A Expired - Lifetime EP1266066B1 (en) | 2000-02-29 | 2001-02-27 | Method for producing a plastic floor covering |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1266066B1 (en) |
AT (1) | ATE251687T1 (en) |
AU (1) | AU2001237497B2 (en) |
DE (1) | DE60100943T2 (en) |
FR (1) | FR2805549B1 (en) |
WO (1) | WO2001064996A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8728603B2 (en) * | 2006-12-11 | 2014-05-20 | Ulrich Windmöller Consulting GmbH | Floor panel |
PL2157122T3 (en) | 2008-08-19 | 2011-11-30 | Graboplast Padlogyarto Zrt | Composition constituting the surface layer of a sheet type plastic body for covering purposes and process for manufacturing the sheet type plastic bodies containing it |
ES2555404T3 (en) | 2011-02-01 | 2015-12-30 | Ivc Nv | Method of manufacturing a plate-shaped product and plate-shaped product manufactured by said method |
PL2644645T3 (en) | 2012-03-28 | 2016-07-29 | Renolit Se | Method for the preparation of composite films |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2341021A1 (en) * | 1976-02-13 | 1977-09-09 | Bat Applic Revetements Plastiq | PVC based floor tiling with a heat conductive interlayer - to dissipate heat from cigarette ends etc. without damage |
US4337296A (en) * | 1980-08-25 | 1982-06-29 | Congoleum Corporation | Methods for bonding dissimilar synthetic polymeric materials and the products involved in and resulting from such methods |
US5643677A (en) * | 1989-09-15 | 1997-07-01 | Armstrong World Industries, Inc. | Aminoplast/polyurethane wear layer for PVC support surface |
GB2285012A (en) * | 1993-12-22 | 1995-06-28 | Amtico Company Limited The | Plastic floor coverings |
US6375786B1 (en) * | 1996-03-04 | 2002-04-23 | Awi Licensing Company | Surface covering having a precoated, E-beam cured wearlayer coated film and process of making the same |
US5961903A (en) * | 1997-02-20 | 1999-10-05 | Mannington Mills, Inc. | Method of making a surface covering having a natural appearance |
GB9822019D0 (en) * | 1998-10-09 | 1998-12-02 | Halstead James Ltd | Floor covering material |
GB9900577D0 (en) * | 1999-01-13 | 1999-03-03 | Altro Ltd | Non stain flooring |
-
2000
- 2000-02-29 FR FR0002538A patent/FR2805549B1/en not_active Expired - Fee Related
-
2001
- 2001-02-27 WO PCT/FR2001/000557 patent/WO2001064996A1/en active IP Right Grant
- 2001-02-27 DE DE60100943T patent/DE60100943T2/en not_active Expired - Lifetime
- 2001-02-27 AU AU2001237497A patent/AU2001237497B2/en not_active Ceased
- 2001-02-27 AT AT01909902T patent/ATE251687T1/en not_active IP Right Cessation
- 2001-02-27 EP EP01909902A patent/EP1266066B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE60100943T2 (en) | 2004-09-09 |
EP1266066A1 (en) | 2002-12-18 |
ATE251687T1 (en) | 2003-10-15 |
AU3749701A (en) | 2001-09-12 |
FR2805549B1 (en) | 2003-09-26 |
FR2805549A1 (en) | 2001-08-31 |
DE60100943D1 (en) | 2003-11-13 |
WO2001064996A1 (en) | 2001-09-07 |
AU2001237497B2 (en) | 2003-09-18 |
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