EP1629968B1 - Recyclingfähiger Bodenbelag für Messen und Austellungen - Google Patents

Recyclingfähiger Bodenbelag für Messen und Austellungen Download PDF

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Publication number
EP1629968B1
EP1629968B1 EP20050300665 EP05300665A EP1629968B1 EP 1629968 B1 EP1629968 B1 EP 1629968B1 EP 20050300665 EP20050300665 EP 20050300665 EP 05300665 A EP05300665 A EP 05300665A EP 1629968 B1 EP1629968 B1 EP 1629968B1
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EP
European Patent Office
Prior art keywords
floor covering
polypropylene
polyethylene
powder
needled
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Not-in-force
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EP20050300665
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English (en)
French (fr)
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EP1629968A1 (de
Inventor
Yannick Victoire
Jean-Michel Boudeau
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Le Commercialiste
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Le Commercialiste
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Publication of EP1629968B1 publication Critical patent/EP1629968B1/de
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/48—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/48—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
    • D04H1/485—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation in combination with weld-bonding
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/48—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
    • D04H1/488—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation in combination with bonding agents
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/542—Adhesive fibres
    • D04H1/544—Olefin series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/60—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in dry state, e.g. thermo-activatable agents in solid or molten state, and heat being applied subsequently
    • 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
    • D06N7/0063—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf
    • D06N7/0071—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing
    • D06N7/0076—Floor covering on textile basis comprising a fibrous top layer being coated at the back with at least one polymer layer, e.g. carpets, rugs, synthetic turf characterised by their backing, e.g. pre-coat, back coating, secondary backing, cushion backing the back coating or pre-coat being a thermoplastic material applied by, e.g. extrusion coating, powder coating or laminating a thermoplastic film
    • 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
    • D06N2201/00—Chemical constitution of the fibres, threads or yarns
    • D06N2201/02—Synthetic macromolecular fibres
    • 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
    • D06N2201/00—Chemical constitution of the fibres, threads or yarns
    • D06N2201/02—Synthetic macromolecular fibres
    • D06N2201/0254—Polyolefin fibres
    • 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
    • D06N2201/00—Chemical constitution of the fibres, threads or yarns
    • D06N2201/02—Synthetic macromolecular fibres
    • D06N2201/0263—Polyamide fibres
    • 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
    • D06N2203/00—Macromolecular materials of the coating layers
    • D06N2203/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N2203/042—Polyolefin (co)polymers
    • 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
    • D06N2205/00—Condition, form or state of the materials
    • D06N2205/06—Melt
    • 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
    • D06N2205/00—Condition, form or state of the materials
    • D06N2205/10—Particulate form, e.g. powder, granule
    • 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
    • D06N2207/00—Treatments by energy or chemical effects
    • D06N2207/06—Treatments by energy or chemical effects using liquids, e.g. water
    • 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
    • D06N2211/00—Specially adapted uses
    • D06N2211/06—Building materials
    • D06N2211/066—Floor coverings

Definitions

  • the present invention relates to a non-woven floor covering for fairs and exhibitions, a method of manufacturing a floor covering and a method of reprocessing a floor covering.
  • a floor covering for fairs and exhibitions has a small thickness, of the order of 4 mm, and must be resistant to pedestrian traffic for the duration of the fair or exhibition.
  • the needled sheet is made from short fibers obtained by an extrusion-spinning process.
  • the fibers of diameters and lengths adapted according to the applications of the products, are made of virgin or recycled thermoplastic polymers such as polyolefins, polyamides or polyesters or mixtures of these polymers.
  • the backing layer consists mainly of latex and synthetic resins based on styrene and butadiene.
  • the manufacture of the flooring consists of regularly coating the underside of the needled web with liquid latex and polymerizing the latex to form a flat, even backing layer.
  • the needlepunched web is also sometimes pre-impregnated with latex.
  • Patent document BE1006982 also discloses a floor covering for the automotive industry that does not have a backing layer of latex or PVC.
  • This flooring is formed from polyolefins, polyesters, polyamides and additives by melting and penetrating a powder into a web by compression. The recycling of such floor coverings, however, requires a separation of the various constituents.
  • the object of the present invention is to provide a fully recyclable floor covering in a simple manner, as well as methods for making and recycling the floor covering.
  • the subject of the invention is a non-woven floor covering for fairs and exhibitions composed of a needled mat and a backing layer, characterized in that the needled mat is made of polyolefins and the backing layer is composed of polyolefins and mineral fillers, the polyolefins being polypropylene and polyethylene in a proportion of at least 55% by weight of polypropylene and at most 38% by weight of polyethylene.
  • the flooring is therefore composed solely of polyolefins and mineral fillers, and a mixture of these compounds with such mass proportions can be used directly in other applications, for example by injection / molding to manufacture parts used in the process. automobile industry.
  • the mineral fillers are calcium carbonates or barium carbonates or alumina hydrates.
  • the floor covering is composed of a needled polypropylene sheet and a backing layer composed of polyethylene and mineral fillers.
  • the powder is melted and this molten powder is partially penetrated into the needle-punched sheet by means of an apron calender comprising a calendering drum.
  • the floor covering of said calendering drum by means of an overspeed cylinder and / or blowing air on the floor covering at the outlet of the apron grille to facilitate this detachment.
  • thermal energy released by the extruder is sent to the dryer and / or the steam washer.
  • FIG. 1 there is shown a floor covering 1 according to the invention which is formed, as in the prior art, of a needled sheet 2 and a backing layer 3. It is composed of polypropylene, of polyethylene and mineral fillers, with more than 55% by weight of polypropylene and less than 38% by weight of polyethylene. Mineral fillers, which can to be flame retardant fillers, are mainly calcium carbonates, barium carbonates, alumina hydrates or phosphors. Many products made by thermoplastic polymer molding or injection have a mass composition that falls within the product range proposed above for flooring 1. Therefore, by recycling and hot extruding the flooring according to In the invention, the thermoplastic raw material is obtained for directly manufacturing these molded / injected products. It is not necessary to add anything other than this raw material to manufacture such products, with the exception of sometimes thinners or thickeners. Thus, all the material of the flooring can be recycled in a simple way, which we will describe in more detail later, and no ultimate waste is created.
  • the overall mass composition desired for the floor covering 1 can be obtained in different ways.
  • the needled web 2 is formed solely of polypropylene and the backing layer 3 is formed of mineral fillers and polyethylene.
  • the manufacture of such a floor covering 1 requires a particular manufacturing method described below.
  • the needled web 2 is manufactured conventionally, preferably with polypropylene F fibers.
  • Polypropylene granules, mixed with dye granules which will give the color of the flooring, are melted in an autoclave and passed through a spin extruder to form polypropylene filaments which will be cut in a short fiber cutter of the order 75 mm long.
  • At least 35% of the fibers have a titer of 6.7 dtex and at least 35% of the fibers have a titer of 17 dtex to further facilitate the entrapment of their bases.
  • the polypropylene fibers then pass through a rotating card where they are combed and come out in a fine veil, then in a spreader - lath machine in which several fine sails are superimposed and crisscrossed to form a sheet about 3 cm thick.
  • This sheet is densified in a needling machine inside which a multitude of barbs need penetrates many times in the sheet and intermingles the fibers.
  • the density of the needled sheet depends on the number of needle hits per cm 2 .
  • the needled web 2 is then rolled before appending in another installation of the backing layer 3 on one of its faces.
  • the manufacturing parameters of the needled web are specific to the manufacture of floor coverings. Sizing a layer 3 on the needlepunched web 2 consolidates the fibers of the needled web 2 to make the floor covering 1 resistant. In addition, the backing layer 3 stiffens the floor covering 1 so that it does not crease underfoot.
  • Figure 2 shows a plant specially arranged to implement the method of manufacturing the floor covering according to the invention from a needled ply roll.
  • a roll 4 of needlepunched web 2 is installed on a peeler 5 and the needled web 2 is unwound continuously in the machine so that a backing layer is glued on it to make the flooring continuously.
  • the needled sheet 2 passes, face upwards, successively in the direction of arrow 6 on a conveyor 7, in a guidance and alignment system 8, under a dusting machine 9, under an infrared heating system 10, in a deck calender 11 and finally in a cooling chamber 12.
  • the needled sheet 2 has a width of about four meters and the guide and driving system 8 consists of a fixed cylinder 13 and a movable cylinder 14 allows to keep the needled web 2 in its axis of movement.
  • the shaker 9 distributes a powder 15, which is a mixture of powder of mineral fillers and of polyethylene powder, regularly on the reverse side of the needled sheet 2.
  • the particle size of the powder is between 20 and 700 micrometers .
  • the sprinkler 9 comprises a mobile hopper 16 which moves alternately in the direction of the width of the needled sheet 2 and pours powder 15 on a rough roller 17 which rotates and delivers a regular flow of powder on the reverse face of the tablecloth 2.
  • the shaker 9 also has an anti-clogging buzzer 18 at the hopper 16 and a broom 19 which rubs on the roller 17 to improve the regularity of the powder flow 15.
  • the thin regular layer of The powder 15 covering the needled web 2 is put into a mood or reactivated, ie fluidized by melting, in the infrared heating system 10 without the stability and flatness characteristics of the needled web 2 being deteriorated.
  • the powder 15 should have a melting temperature below the melting temperature of the fibers F composing the needled web 2 so that the powder 15 becomes fluid in the infrared heating system 10 without the fibers F melting.
  • the melting temperature of the powder is of the order of 120 ° C
  • the melting temperature of the fibers F is of the order of 180 ° C
  • the temperature in the infrared heating system 10 is thermoregulated at about 130 ° C.
  • the needled web covered with the thin layer of fluidized powder, penetrates for a finishing operation into the apron grille 11.
  • the apron grille 11 comprises a large heated rotating heating calender, about 1.5 meters in diameter, and a movable apron 21 which is an endless belt moving around driving or guiding rollers 22 and around the drum 20, the apron 21 surrounding substantially the entire circumference of the drum 20 and pressing against the drum 20 in turn.
  • the needled layer covered with fluidized powder enters between the drum 20 and the apron 21, the backside covered with fluidized powder being in contact with the drum 20, at a location where a roller 22 presses the apron 21 against the drum 20, and performs almost a turn around the drum 20 being pressed between the drum 20 and apron 21.
  • the drum 20 is heated to a temperature slightly lower than the temperature of the infrared heating system 10 to slightly cool the powder without compromising its fluidity this temperature is of the order of 125 ° C.
  • the continuous pressure exerted by the apron grille 11 on the fluidized powder forces it to penetrate partially into the back of the needled web 2 without crossing it completely, which makes it possible to trap the base of the fibers F constituting the needled web 2 in the backing layer 3 while retaining the textile appearance of the face of the needlepunched web 2.
  • the passage in the apron grille makes it possible to form a smooth and regular backing layer 3 in intimate contact with the needled web 2
  • the time of presence of the needled web 2 in the apron shell 11, therefore at high temperature, is short and as it is kept compressed between the drum 20 and the apron 21, it does not retract and leaves perfectly flat and ironed .
  • the apron 21 is more particularly made of aramid fabric known under the name of Nomex from Dupont Company in order to withstand the high temperatures generated by the calendering drum 20.
  • the surface of the calender drum 20 is Teflon closed porosity.
  • Stain removal of the backing layer 3 of the calendering drum 20 is facilitated by a diverting cylinder 23 or stain removal, a blower 24 and an overspeed cylinder 25, more visible in FIG. 3.
  • This overspray cylinder 25, coated with a perfectly adherent rough coating, has a slightly higher tangential velocity, of 1 to 2%, at the speed of displacement of the floor covering 1 and causes tension jolts in the detachment of the floor covering 1.
  • the floor covering 1 finally goes into an air cooling chamber 12 to be cooled to a temperature of around 20 ° C before being rolled, packaged and packaged.
  • the floor covering is held taut in the cooling chamber so that it does not deform. Cooling allows the thermoplastic material forming the backing layer to harden.
  • a floor covering 1 obtained in the manner described above with a polypropylene needled ply of 300 g / m 2 and a backing layer of 200 g / m 2 formed with a powder mixture comprising 80% by weight of polyethylene and 20% by weight of mineral fillers has suitable characteristics for use in an exhibition, fair or any place temporarily welcoming the public.
  • Such a floor covering therefore has a mass composition of 60% of polypropylene, 32% of polyethylene and 8% mineral fillers.
  • a raw material having this mass composition can be used in the field of plastics directly without adding other components to produce products by injection or molding.
  • the mass ratio between the backing layer and the needled web can vary
  • the needled web can be formed with a blend of polypropylene fibers and polyethylene fibers
  • the powder at the base of the backing layer can polypropylene, the important result of which is that the overall flooring is composed of polypropylene, at least 55% by weight, polyethylene, at most 38% by weight, and a material (fillers). mineral) which does not compromise the homogeneity of the thermoplastic mixture obtained by melting the flooring which is then usable for other applications in the field of plastics.
  • Recycled materials can be used in the manufacture of flooring.
  • the floor covering 1 is recovered for recycling. This recovery is done in collaboration with the customer, and can be encouraged by means of a deposit system.
  • the used floor covering 1 is introduced into a recycling plant 30 shown in FIG. 4. It is first cut into strips by means of a guillotine in 31. The floor covering strips are then transferred into a steam washer 32 at about 140 ° C to remove any dirt they contain. The strips are then dewatered in a centrifuge 33 to remove 80% of the water stored during washing and dried in a hot air dryer 34.
  • the flooring 1 is not very thick it is not necessary it can be grinded directly into an extruder 35 while it is still hot at about 70 ° C due to drying, thus allowing energy savings.
  • the preheated floor is melted at about 220 ° C and the resulting melt is mixed and extruded.
  • the extruded material may be molded directly to produce products or preferably be shaped into thermoplastic granules, the products or granules having the same mass composition as the initial flooring. The granules will serve as raw material in a thermoplastic product manufacturing line.
  • the heat energy or heat released during extrusion is recovered and used for steam washing as represented by arrow 36, as well as for drying as represented by arrow 37.
  • water intended for to cool the pellets at the extrusion outlet can be used to preheat the water to vaporize for steam washing by means of a heat exchanger. Hot air for drying can be picked up around the extrusion cylinder. Thus, 70% of the energy required for washing and drying comes from recovered energy.
  • the products manufactured by molding / injection using the granules from the recycling of a floor covering according to the invention have a mass composition of at least 55% polypropylene and at most 38% polyethylene.
  • Such products are, for example, car seats for children or car bumpers.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Claims (10)

  1. Fußbodenbeschichtungs-Vlies (1) für Messen und Ausstellungen, bestehend aus einer Nadelvlies-Matte (2) und einer rückseitigen Beschichtung (3), dadurch gekennzeichnet, dass die Nadelvlies-Matte aus Polyolefinen und die rückseitige Beschichtung aus Polyolefinen und mineralischen Füllstoffen besteht, wobei die Polyolefine aus Polypropylen und Polyethylen in einem Mengenverhältnis von mindestens 55 % an Gewicht aus Polypropylen und von höchstens 38 % an Gewicht aus Polyethylen bestehen.
  2. Fußbodenbeschichtung nach Anspruch 1, bei der der mineralische Füllstoff aus Kalziumkarbonaten oder aus Bariumkarbonaten oder aus Tonerdehydraten besteht.
  3. Fußbodenbeschichtung nach einem der Ansprüche 1 und 2, bei der die Nadelvlies-Matte aus Polypropylen und die rückseitige Beschichtung aus Polyethylen und mineralischen Füllstoffen zusammengesetzt ist.
  4. Herstellungsverfahren eines Fußbodenbeschichtungs-Vlieses (1) für Messen und Ausstellungen, dadurch gekennzeichnet, dass dieses die folgenden Schritte umfasst:
    - man stellt eine Nadelvlies-Matte (2) ausgehend von Polyolefinfasern her;
    - man bestreut eine Seite der Nadelvlies-Matte mit einem Puder (15), das sich aus Polyolefinen und mineralischen Füllstoffen zusammensetzt;
    - man schmelzt dieses Puder ein und lässt es mit Hilfe von Druck zum Teil in die Nadelvlies-Matte eindringen, so dass man eine Fußbodenbeschichtung auf Basis von Polyolefinen und mineralischen Füllstoffen erhält, wobei die Polyolefine aus Polypropylen und aus Polyethylen in einem Mengenverhältnis von mindestens 55 % an Gewicht aus Polypropylen und höchstens 38 % an Gewicht aus Polyethylen bestehen.
  5. Herstellungsverfahren nach Anspruch 4, bei dem man ein Puder einschmilzt und dieses Puder zum Teil in die Nadelvlies-Matte mit Hilfe einer Prägeplatte (11), die eine Kalanderwalze (20) umfasst, eindringen lässt.
  6. Herstellungsverfahren nach Anspruch 5, bei dem man außerdem die Fußbodenbeschichtung (1) mit Hilfe eines Zylinders mit Überdrehzahl (25) von der besagten Kalanderwalze (20) löst.
  7. Herstellungsverfahren nach einem der Ansprüche 5 und 6, bei dem man am Ende der Prägeplatte (11) Luft auf die Fußbodenbeschichtung bläst, um die Loslösung der Fußbodenbeschichtung (1) von der besagten Kalanderwalze (20) zu vereinfachen.
  8. Verfahren zur Wiederaufbereitung einer Fußbodenbeschichtung (1) nach einem der Ansprüche 1 bis 3 für die Herstellung eines thermoplastischen Rohstoffes, umfassend die folgenden Schritte:
    - man schneidet die besagte Fußbodenbeschichtung in Streifen;
    - man wäscht besagte Streifen mit Hilfe von Dampf und schleudert sie trocken;
    - man trocknet die Streifen und erwärmt sie auf etwa 70 °C in einem Trockner (34), bevor man sie durch einen Extruder (35) führt, der besagten thermoplastischen Stoff herstellt.
  9. Wiederaufbereitungsverfahren nach Anspruch 8, bei dem man Wärmeenergie, die durch den Extruder freigesetzt wurde, in den Trockner schickt.
  10. Wiederaufbereitungsverfahren nach Anspruch 8 oder 9, bei dem man Wärmeenergie, die durch den Extruder freigesetzt wurde, für das Dampfwaschen verwendet.
EP20050300665 2004-08-23 2005-08-16 Recyclingfähiger Bodenbelag für Messen und Austellungen Not-in-force EP1629968B1 (de)

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FR0451888A FR2874389B1 (fr) 2004-08-23 2004-08-23 Revetement de sol recyclable pour foires et expositions

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DE102007053991A1 (de) * 2007-11-13 2009-05-14 Fleissner Gmbh Vorrichtung zur Beaufschlagung von Stoffen mittels heißen Gasen

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Publication number Priority date Publication date Assignee Title
FR2957610B1 (fr) * 2010-03-17 2012-03-23 Freudenberg Politex Sa Produit non-tisse contenant des particules organiques et/ou minerales et son procede de fabrication
CN106283395B (zh) * 2016-08-10 2018-09-21 广德天运新技术股份有限公司 一种棉纤维烘干冷却系统

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US5107617A (en) 1990-07-30 1992-04-28 Pendleton Michael K Chum buoy
DE4135937C2 (de) * 1991-10-31 1997-07-03 Pegulan Tarkett Ag Verfahren zu Herstellen von Latex-, PVC-, und Weichmacher-freien Textil- oder Kunststoff-Boden- und Wandbelägen
US5382400A (en) * 1992-08-21 1995-01-17 Kimberly-Clark Corporation Nonwoven multicomponent polymeric fabric and method for making same
BE1006982A3 (nl) * 1993-04-06 1995-02-07 Dsm Nv Werkwijze voor het produceren van een thermovormbare vloerbedekking.
DE4343621C2 (de) * 1993-12-21 1995-12-21 Bsu Beteiligungs Ag Verwendung von PVC-freien Verbundwerkstoffen mit textiler Oberseite zur Kaschierung von Sonnenblenden in Kraftfahrzeugen

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007053991A1 (de) * 2007-11-13 2009-05-14 Fleissner Gmbh Vorrichtung zur Beaufschlagung von Stoffen mittels heißen Gasen

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FR2874389B1 (fr) 2006-09-22
FR2874389A1 (fr) 2006-02-24

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