Classifications

• • 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
  • D06N7/0052—Compounding ingredients, e.g. rigid elements
  • D06N7/0055—Particulate material such as cork, rubber particles, reclaimed resin particles, magnetic particles, metal particles, glass beads
• • 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
• • 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
• • 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
• • 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
  • E04F15/02172—Floor elements with an anti-skid main surface, other than with grooves
• • 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

Definitions

• the present invention relates to an improved process for producing a non-slip floor covering in thermoplastic material as well as the new type of covering obtained by such a process.
• such coatings consist of a basic structure in plasticized PVC, reinforced with a nonwoven complex / glass fiber grid and covered on its visible face of a surface sheet, also of plasticized PVC, in which are embedded solid mineral particles, such as silicon carbide, corundum, quartz or organic particles, such as cork.
• the non-slip surface layer can be produced either continuously with the manufacture of the plasticized base structure, or during a separate phase on a transfer support.
• a regular layer of a composition of a PVC plastisol is deposited on the surface, for example with a doctor blade. at a rate of 800 g / m ⁇ and 1200 g / m ⁇ , and powdered particles of silicon carbide or other particles not very sensitive both to the plasticizers, solvents or other additives contained in the plastisol and also to the conditions of gelling, especially temperature.
• This deposition of particles is carried out at a rate of 100 to 300 g / m 2 and they have a particle size generally between 200 ⁇ m and 800 ⁇ m and preferably 400 ⁇ m.
• e comp exe a ns covered part cu es pass ensu te in an oven where the gelling operation is carried out, operation performed at a temperature of 180-195 ° C for a period of 3 min 30 sec. at 4 min 30 sec, the complex being at the outlet of the oven subjected to a light graining treatment by passage between the cylinders of a calender comprising a rubber cylinder and an unheated steel cylinder.
• the complex is at a temperature of the order of 140 ° C., the steel cylinder being, by simple heat exchange, brought to a temperature of the order of 40 ° C.
• the material thus produced has good non-slip properties, both dry and wet.
• such a material has a coefficient of friction in the wet state greater than or equal to 0.30, coefficient determined according to standard B.S. 6677. part 1, 1986.
• the method according to the invention consists, during a first operational phase, in conventionally performing a , than non-woven cellulosic or glass, woven or non-woven grid, associated or not with an additional sub-layer, in foam for example.
• a layer of a transparent or colored PVC plastisol is deposited on the upper face of the base complex, which is pre-gelified by heat treatment; . continuously, the pre-gelled plastisol layer is covered with a layer of thermosetting powder and the assembly is subjected to a second heat treatment allowing the formation of a continuous film on which it is deposited, always continuously, then that it is in liquid form, particles of silicon carbide or the like; . the coating thus formed then passes through a hot air oven, resulting in the complete gelling of the plastisol as well as the crosslinking of the surface film, and the trapping of the particles in said surface film, the assembly then being seeded and received.
• the heat treatment making it possible to transform the thermosetting powder into a liquid film is carried out by combining the action of an infrared ramp and passage through a hot air tunnel.
• Infrared radiation brings the material to its melting temperature, that is to say to a temperature generally between 100 ° C and 200 ° C carried out for a period of one to thirty seconds.
• the action of the hot air makes it possible to smooth the film, the air temperature being between 80 and 120 ° C, and the treatment time between thirty seconds and one minute.
• a coating which has a basic PVC structure, pressed, extruded or calendered, reinforced by a frame such as a non-woven complex / glass fiber grid, covered on its reverse side.
• a sub-layer such as a layer of foam, and the visible face of which consists of a layer of surface coating in which are embedded particles communicating to the whole of the non-slip properties.
• This coating is characterized in that the surface layer associated with the base structure, consists of a two-layer complex comprising a thermoplastic layer, preferably based on plasticized PVC like the base structure, coated with a film based on 'A thermosetting polymer, polyester more particularly, the particles communicating the non-slip properties being embedded in the thickness of said surface layer while remaining visible.
• thermoplastic PVC-based surface layer is obtained from a plastisol PVC composition (PVC resin, plasticizer, and conventional stabilizing and rheology additives), this surface layer being colored or transparent and having a thickness of between 0 , 2 and 0.8 mm.
• the outer layer associated with this PVC-based layer is made from a thermosetting powder composition having short-term cross-linking (hardening) characteristics of between one and seven minutes at the most at a temperature between 180 ° C and 210 ° C.
• the formulation of this powder is such that it allows adhesion to the plasticized polymer (PVC) without altering the qualities of flexibility, the hardener also being non-aggressive with respect to PVC.
• PVC plasticized polymer
• Such a powder can be obtained from a composition comprising:> a hydroxylated polyester resin, a carboxylated polyester resin, a polyurethane resin, a polyester / epoxy hybrid resin, etc .; > a crosslinking agent of the glycidylester type, a crosslinking agent of the hydroxyalkylamide type, a crosslinking agent of the blocked or dimerized isocyanate type.
• the covering according to the invention has a high overall roughness, the Ra index being between 4 and 7 ⁇ m and the Rz index (DIN) between 15 and 40 ⁇ m.
• FIG. 1 is a schematic view of a production line for a coating of soil according to the invention
• Figure 2 is a schematic perspective view illustrating the general structure of such a non-slip floor covering.
• a basic structure (1) is made of PVC in a conventional manner, by pressing or calendering.
• Such a basic structure (1) can be reinforced by a layer of textile material, and can comprise on its reverse side, an under-layer such as a layer of foam (la).
• 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 material, PVC in particular.
• This plastisol deposition is carried out in a conventional manner by passing the support (1) over a roller (3) associated with a doctor blade (4).
• the plastisol layer (2) which can be colored or transparent, has a thickness of between 0.2 and 1 mm.
• the assembly is continuously subjected to a gelation 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) is then deposited on this plastisol layer (2), which is therefore solidified by pregelification.
• ec ros a ique by means of a dusting system which can be a hopper (6) associated with an electrostatic charge assembly or a conventional 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 After heat treatment (8), preferably by means of an assembly combining the action of an infrared ramp and hot air, the powder is transformed into a continuous liquid film.
• the infrared ramp brings the material to its melting temperature, comp ⁇ se between 110 and 200 ° C, and this for a period which can range from one to thirty seconds.
• the molten material is then subjected to the action of hot air in a tunnel oven, the temperature of which is between 80 and 120 ° C. and this for a period of thirty seconds to one minute.
• Such particles are preferably made of silicon carbide and have a particle size of 400 to 800 ⁇ m.
• thermosetting layer 9
• the complex thus formed is then subjected to a heat treatment inside a hot air oven (11), resulting in the total gelification of the thermoplastic layer (2) and the crosslinking of the thermosetting layer (9) as well as the 'entrapment of particles (10) in this thermosetting layer (9).
• the temperature inside the oven is adjusted between 180 ° C and 210 ° C, the treatment time being between one to seven minutes.
• the complex thus formed is then received, for example in the form of a coil.
• Figure 2 shows in section, schematically, the general structure of such a floor covering, therefore comprising a base support (1) covered with a bilayer structure, transparent or not, consisting, on the one hand, of '' a thermoplastic layer (2), preferably plasticized PVC associated with a film (9) based , giving the structure non-slip properties being embedded in said surface layer (9).
• the surface covering of a basic structure (1) previously produced comprising a foam underlay (la) associated with the back of a sheet (lb ) in PVC.
• Such a support (1) has a thickness of 1.5 mm.
• this support (1) On the surface of this support (1), a layer of 625 g / m 2 of a plastisol having a viscosity of 200 centipoise (cps) having the following composition is deposited with the doctor blade (4):
• a layer (2) having a thickness of 0.5 mm is thus formed on the surface of the support (1).
• the assembly is then subjected to a heat treatment by passing under an infrared ramp (5) bringing the material to a temperature of 110 ° C. and resulting in pregelification, therefore the hardening of the layer (2) based on the composition of PVC. , electrostatically (7), at a rate of 60 g / m 2 , a thermosetting powder consisting of a polyester-based composition.
• the complex is then subjected to a second heat treatment (8) combining the action of an infrared ramp and hot air.
• the infrared ramp brings the powder to a temperature of 120 ° C for a period of ten seconds resulting in its melting and the formation of a liquid film which is subjected to the action of hot air at 95 ° C for a period of forty seconds resulting in a smoothing of said film (9), the thickness of which is of the order of 50 ⁇ m.
• silicon carbide particles having a particle size of 600 ⁇ m are deposited on the surface of the still liquid film (9), the deposit being carried out at a rate of 200 g / m 2 .
• the particles (10) are distributed randomly and the latter are embedded in the surface layer (9).
• the coating thus formed then passes through a hot oven at a temperature of 210 ° C., the treatment time being 3 minutes.
• a floor covering is obtained as illustrated in FIG. 2, having a total thickness of 2 mm + 0.1 mm.
• Such a floor covering has very good non-slip characteristics, the overall roughness Ra being 4.8 ⁇ m with a roughness index Rz (DIN) of 30 ⁇ m and the maximum Ry value of 100 ⁇ m over the evaluated length.
• the no ⁇ native reference EN 425 on the action of a wheelchair allows to highlight improved product properties surface treated in accordance with the invention compared to untreated conventional product, that is, say a coating whose surface layer consists only of a thermoplastic layer.
• the measurement of the slipperiness of the soil with the FSC 2000 device shows that the sample in accordance with the invention has a slip resistance (Fy / Fz) of 0.6 while a conventional product has a value of 0.37.
• thermoset surface layer shows the excellent behavior of the product according to the invention having a thermoset surface layer.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Floor Finish (AREA)
• Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
• Laminated Bodies (AREA)

Applications Claiming Priority (3)

Publications (2)

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Family Applications (1)

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Cited By (2)

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• 2000
  • 2000-02-29 FR FR0002533A patent/FR2805548B1/fr not_active Expired - Fee Related
• 2001
  • 2001-02-27 WO PCT/FR2001/000558 patent/WO2001064997A1/fr active IP Right Grant
  • 2001-02-27 EP EP01909903A patent/EP1264035B1/de not_active Expired - Lifetime
  • 2001-02-27 DE DE60100942T patent/DE60100942T2/de not_active Expired - Lifetime
  • 2001-02-27 AU AU3749801A patent/AU3749801A/xx active Pending
  • 2001-02-27 AU AU2001237498A patent/AU2001237498B2/en not_active Ceased
  • 2001-02-27 AT AT01909903T patent/ATE251686T1/de not_active IP Right Cessation

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