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WO2008041999A1 - Produits à support de polyuréthane et procédés - Google Patents

Produits à support de polyuréthane et procédés Download PDF

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Publication number
WO2008041999A1
WO2008041999A1 PCT/US2006/049020 US2006049020W WO2008041999A1 WO 2008041999 A1 WO2008041999 A1 WO 2008041999A1 US 2006049020 W US2006049020 W US 2006049020W WO 2008041999 A1 WO2008041999 A1 WO 2008041999A1
Authority
WO
WIPO (PCT)
Prior art keywords
polyurethane
backing
layer
product
carpet
Prior art date
Application number
PCT/US2006/049020
Other languages
English (en)
Inventor
Amy Katherine Streeton
Robin R. Beistline
Julie Smallfield
Dennis L. Riddle
Jr. N. David Sellman
Kenneth Benjamin Higgins
Original Assignee
Milliken & Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Milliken & Company filed Critical Milliken & Company
Priority to PCT/US2007/021430 priority Critical patent/WO2008045342A2/fr
Priority to CA002663809A priority patent/CA2663809A1/fr
Publication of WO2008041999A1 publication Critical patent/WO2008041999A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/36—Hydroxylated esters of higher fatty acids
    • 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
    • D06N7/0068—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 the primary backing or the fibrous top layer
    • 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
    • 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
    • D06N7/0086—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 characterised by the cushion backing, e.g. foamed polyurethane
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0008—Foam properties flexible
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/013—Fillers, pigments or reinforcing additives
    • 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
    • D06N2203/06—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N2203/068—Polyurethanes
    • 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
    • D06N2205/106—Scrap or recycled particles
    • 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
    • D06N2205/18—Scraps or recycled materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23907—Pile or nap type surface or component
    • Y10T428/23914—Interlaminar
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/23907—Pile or nap type surface or component
    • Y10T428/23979—Particular backing structure or composition

Definitions

  • the present invention relates to surface coverings such as floor coverings having a show surface material in contacting overlying relation to a backing of polyurethane with or without additional structures, layers, backings, and/or the like.
  • a surface covering such as a carpet, carpet tile, area rug, floor mat or the like incorporating a textile face, such as a tufted, bonded, flocked, needled, needle punched, woven, non-woven, or knit fabric structure disposed in contacting overlying relation to at least a polyurethane layer.
  • the polyurethane layer may form a precoat, tiecoat and/or backing and may be foam or non-foam, and may preferably be flexible.
  • One or more optional intermediate structure layers may be disposed over, in or under the polyurethane and one or more optional backing layers may be disposed across the underside of the polyurethane. Methods of making such surface coverings are also provided.
  • carpeting and carpet tile with, for example, tufted or bonded carpet faces, and with backing layers formed from so-called “virgin” or “filled” foam, for example, polyurethane foam, or from “rebond” or “bonded” foam wherein chips or pieces of recycled foam are held together by a binder. It is also known to form mats such as floor mats or entry way mats from tufted or bonded carpet faces secured in bonded relation to rubber backings.
  • At least one embodiment of the present invention provides advantages and/or alternatives over the prior art by providing a surface covering such as a carpet, carpet tile, area rug, floor mat, flooring, floor tile, rug, mat, broadloom carpet, stabilized broadloom, roll goods, modular flooring, 6-foot broadloom or the like incorporating a textile face, such as a tufted, bonded, flocked, needled, needle punched, woven, non-woven, or knit fabric structure disposed in contacting overlying relation to at least one polyurethane layer.
  • One or more optional intermediate structure layers may be disposed over, in or under the polyurethane and one or more optional backing layers may be disposed across the underside of the polyurethane.
  • the polyurethane is in direct contacting relation with the underside of the textile face structure without the need for any intermediate binder or pre-coat.
  • the textile face structure is preferably substantially relaxed such as by steaming, dyeing or the like prior to application of the polyurethane so as to substantially avoid subsequent deformation due to shrinkage.
  • a common formation unit and process may be used to produce carpet, area rugs, carpet tile, floor mats, and the like.
  • FIG. 1 is schematic view illustrating apparatus and process for forming various polyurethane-backed surface coverings.
  • FIG. 2 is a cross-sectional illustration of an exemplary polyurethane- backed surface covering incorporating a tufted face structure
  • FIG. 3 is a cross-sectional illustration of an exemplary polyurethane- backed surface covering incorporating a woven face structure
  • FIG. 4 is a cross-sectional illustration of an exemplary polyurethane- backed surface covering incorporating a non-woven face structure
  • FIG. 5 is a cross-sectional illustration of an exemplary polyurethane- backed surface covering incorporating a bonded pile face structure
  • FIG. 6 is schematic view illustrating apparatus and process for forming various surface coverings incorporating backed polyurethane
  • FIG. 7 is a cross-sectional illustration of an exemplary surface covering incorporating a tufted face structure in contacting relation to a backed polyurethane layer;
  • FIG. 8 is a cross-sectional illustration of an exemplary surface covering incorporating a woven face structure in contacting relation to a backed polyurethane layer;
  • FIG. 9 is a cross-sectional illustrational of an exemplary surface covering incorporating a non-woven face structure in contacting relation to a backed polyurethane layer;
  • FIG. 10 is a cross-sectional illustration of an exemplary surface covering incorporating a bonded pile face structure in contacting relation to a backed polyurethane layer;
  • FIG. 11 is schematic view illustrating apparatus and process for forming various surface coverings incorporating stabilized polyurethane
  • FIG. 12 is a cross-sectional illustration of an exemplary surface covering incorporating a tufted face structure in contacting relation to a stabilized polyurethane layer
  • FIG. 13 is a cross-sectional illustration of an exemplary surface covering incorporating a woven face structure in contacting relation to a stabilized polyurethane layer
  • FIG. 14 is a cross-sectional illustration of an exemplary surface covering incorporating a non-woven face structure in contacting relation to a stabilized polyurethane layer;
  • FIG. 15 is a cross-sectional illustration of an exemplary surface covering incorporating a bonded pile face structure in contacting relation to a stabilized polyurethane layer;
  • FFG. 16 is schematic view illustrating apparatus and process for forming various surface coverings incorporating stabilized and backed polyurethane
  • FIG. 17 is a cross-sectional illustration of an exemplary surface covering incorporating a tufted face structure in contacting relation to a stabilized and backed polyurethane backing;
  • FIG. 18 is a cross-sectional illustration of an exemplary surface covering incorporating a woven face structure in contacting relation to a stabilized and backed polyurethane backing;
  • FIG. 19 is a cross-sectional illustration of an exemplary surface covering incorporating a non-woven face structure in contacting relation to a stabilized and backed polyurethane backing
  • FIG. 20 is a cross-sectional illustration of an exemplary surface covering incorporating a bonded pile face structure in contacting relation to a stabilized and backed polyurethane backing
  • FIG. 21 is a cross-sectional illustration of an exemplary surface covering like that of FIG. 2 with the addition of a backing such as a coating, film, or the like;
  • FIG. 22 is a cross-sectional illustration of an exemplary surface covering like that of FIG. 7 with the addition of a backing such as a coating, film, or the like;
  • FIG. 23 is a cross-sectional illustration of an exemplary surface- covering like that of FIG. 12 except that the stabilizing layer or material is adjacent or abutting the tufts;
  • FIG. 24 is a cross-sectional illustration of an exemplary surface covering like that of FIG. 13 except that the stabilizing layer or material is near or on the bottom of the polyurethane backing;
  • FIG. 25 is a cross-sectional illustration of an exemplary surface covering like that of FIG. 3 except that it is inverted as constructed using an exemplary apparatus and process as shown in FIG. 27;
  • FIG. 26 is a cross-sectional illustration of an exemplary surface covering like that of FIG. 8 except that it is inverted like in FIGS. 25 and 27; and, FIG. 27 is a schematic illustration of an exemplary apparatus and process for forming polyurethane backed surface coverings in accordance with another embodiment of the present invention.
  • an exemplary formation system 10 is illustrated for use in the production of surface coverings or polyurethane backed products such as carpeting, carpet tile, area rugs, roll goods, and/or floor mats.
  • the formation system 10 includes an endless belt 12 formed from a material such as PTFE woven fiberglass or the like.
  • a mass of uncured polyurethane composition 14 is preferably deposited directly onto the belt 12 and then adjusted to a desired height by a leveller 16 such as a doctor blade, air knife, or the like.
  • the thickness of the levelled polyurethane composition is preferably in the range of about 0.10 inches to about 1.0 inches, more preferably about 0.16 inches to about 0.60 inches although higher or lower thickness levels may likewise be used. While direct application of the polyurethane composition onto the belt 12 may be preferred, it is likewise contemplated that a release layer, film, paper or the like (not shown) on or over the belt or other deposit surface may likewise be used if desired.
  • Fillers may be added at amounts of about 0.0% to about 99% by weight, most preferably about 10% to about 90% by weight, and more preferably from about 20% to about 80% by weight. Fillers, agents, additives, extenders, liquids, and/or the like may be added in combination with air (or other gases) mixing or frothing and/or blowing to provide density levels as desired. In accordance with at least one particular example, a polyurethane froth density of about 887 grams per litre has been found to provide good results.
  • a preferred polyurethane backing which serves as precoat and backing is a mechanically frothed methyl diphenyl diisocyanate (MDI) based polyurethane having an about 750 gram cup weight and an about 27 oz/yd 2 add on.
  • MDI mechanically frothed methyl diphenyl diisocyanate
  • Potentially preferred filler examples include: Used foundry sand (UFS) - 50% to 80% by weight Crushed glass — 65% by weight Calcium carbonate - 50% to 65% by weight Coal fly ash - 50% by weight
  • a textile face structure 20 with a fibrous underside is preferably I l
  • the textile face structure 20 may be pre-treated at a steam box 22 to relieve internal stresses by application of moisture and heat, may be dyed, may be range dyed, or the like. Such treatment permits the face structure 20 to remain substantially tensionless during subsequent curing of the polyurethane composition 14 as will be described further hereinafter. The elimination of tension in the face structure 20 facilitates the avoidance of undue levels of cupping or curling in the final structure. It is preferred that the polyurethane backing be relatively thin, dense, and flexible and that the face material or fabric be substantially tensionless. Such a product lies flat on the floor, can be bent or rolled, and the like.
  • the resulting composite structure may thereafter be moved through, for example, an elevated temperature curing range 26.
  • the temperature in the curing range is set to provide substantially complete curing of the polyurethane composition 14.
  • a curing range 26 having, for example, heated platens below belt 12, a platen temperature setting of about 250 degrees F in a first zone, and with a setting of about 290 degrees F in subsequent zones has been found to provide good curing results when the belt 12 is operating at a rate of about 30 feet per minute.
  • these setting may be readily adjusted as desired.
  • certain polyurethane backings may cure at room temperature.
  • the composite structure with cured polyurethane may thereafter be removed from the belt 12 and sent to a cutter 30 for segmentation to a length and width as desired based on the final intended use or rolled to be cut later.
  • Cutter 30 may be a clicker for carpet tiles, a cut table for mats or rugs, a slitter, or the like.
  • the formation system 10 may be used to form carpet, carpet tile, area rugs, roll goods, and/or floor mats as may be desired.
  • the density and thickness levels of polyurethane may be adjusted depending upon the product being produced.
  • the mass per unit area of polyurethane may be slightly higher for carpeting than for floor mats.
  • a polyurethane mass per unit area of about 26 to 28 ounces per square yard with a thickness of about 63 mils may be suitable for carpeting while a mass per unit area of about 25 ounces per square yard with a thickness of about 100 mils may be more suitable for dust control mats.
  • the textile face structure 20 may have any number of suitable constructions.
  • FIGS. 2-5 illustrate a number of polyurethane-backed constructions such as may be formed on the system 10 using various face structures.
  • FIG 2 illustrates a tufted textile face structure 20 incorporating an arrangement of yarn elements 36 tufted through a so called "primary backing" 38 such as a woven material, a scrim, a non-woven material, combined woven and non-woven material, or the like.
  • the cured polyurethane composition 14 extends substantially to the primary backing 38 thereby aiding in locking the yarn elements 36 in place.
  • a loop pile is shown, the pile may be loop, cut, or cut and loop.
  • FIG. 3 illustrates a woven textile face structure 2OA disposed in contacting relation to the cured polyurethane composition 14.
  • the cured polyurethane composition 14 extends substantially to the surface of the woven textile face structure 2OA and preferably migrates at least partially into the interstices between yarn elements forming the woven textile face structure 2OA to promote good adhesion.
  • FIG. 4 illustrates a non-woven textile face structure 2OB such as a needlepunched, flocked, spunbond, wet laid, or other non-woven construction disposed in contacting relation to the cured polyurethane composition 14.
  • the cured polyurethane composition 14 extends substantially to the surface of the non-woven textile face structure 2OB and preferably migrates at least partially into the interstices between fiber elements forming the non- woven textile face structure 2OB to promote good adhesion.
  • FIG. 5 illustrates a bonded yarn textile face structure 2OC incorporating an arrangement of yarn or pile elements 37 bonded in place across a primary backing or substrate layer 44 by an adhesive 42 disposed across at least the upper surface of the primary backing layer 44.
  • a loop pile is shown, the pile may be loop, cut, or cut and loop.
  • the cured polyurethane composition 14 preferably extends substantially to the primary backing 44.
  • FIG. 6 illustrates a formation system 110 for production of surface coverings incorporating backed polyurethane, such as felt or scrim backed polyurethane, wherein elements corresponding to those previously described are designated by like reference numerals increased by 100.
  • the formation system 110 is substantially identical to the system illustrated and described in relation to FIG. 1 but with the addition of backing material, such as felt 140 across the belt 112 at a position upstream of the location at which the polyurethane composition 114 is deposited.
  • one felt that may be particularly preferred is a needle punched felt formed from polyester and/or pofypropylene as described in U.S. Patent 5,540,968 hereby incorporated by reference herein.
  • a needle punched felt formed from polyester and/or pofypropylene as described in U.S. Patent 5,540,968 hereby incorporated by reference herein.
  • other woven and/or non-woven backings may likewise be utilized as desired.
  • the textile face structure 120 may have any number of suitable constructions.
  • FIGS. 7-10 illustrate a number of backed polyurethane constructions such as may be formed on the system 110 using various face structures.
  • FIG 7 illustrates a tufted textile face structure 120 incorporating an arrangement of yarn elements 136 tufted through a primary backing 138 such as a woven, a non-woven or the like.
  • a primary backing 138 such as a woven, a non-woven or the like.
  • the cured polyurethane composition 114 extends substantially between the backing, such as non- woven felt or a woven or nonwoven scrim or mesh 140 and the primary backing 138 thereby aiding in locking the yarn elements 136 in place.
  • FIG. 8 illustrates a woven textile face structure 120A disposed in contacting relation to the cured polyurethane composition 114.
  • the cured polyurethane composition 114 extends substantially between the backing, such as non-woven felt 140 and the surface of the woven textile face structure 120A and preferably migrates at least partially into the interstices between yarn elements forming the woven textile face structure 120A so as to promote good adhesion.
  • FIG. 9 illustrates a non-woven textile face structure 120B such as a needlepunched, flocked, spun bond or other non-woven construction disposed in contacting relation to the cured polyurethane composition 114.
  • the cured polyurethane composition 114 extends substantially between the felt backing, such as a non-woven 140 and the surface of the non-woven textile face structure 120B and preferably migrates at least partially into the interstices between fiber elements forming the non-woven textile face structure 120B so as to promote good adhesion.
  • FIG. 10 illustrates a bonded yarn textile face structure 120C incorporating an arrangement of yam elements 137 bonded in place across a primary backing or substrate layer 144 by an adhesive 142 disposed across the upper surface of the primary backing layer 144.
  • the cured polyurethane composition 114 preferably extends substantially between the backing, such as a non-woven felt 140 and the primary backing 144.
  • the backings 140 of FIGS. 6 - 10 may be a woven, non-woven, or combined woven and non-woven material or fabric, a film, a scrim, a mesh, or combinations thereof.
  • the backing 140 is a non-woven bonded glass scrim material marketed as STABILON TRIAXTM by Milliken & Company of Spartanburg, SC. It is preferred that the backing 140 be a flexible material which prevents growth and which tends to prevent curling of the surface covering 120 (such as a carpet tile). A glass scrim, mat, or the like may be preferred.
  • FIG. 11 illustrates a formation system 210 for production of surface coverings incorporating polyurethane with an intermediate structural support layer, wherein elements corresponding to those previously described are designated by like reference numerals in a 200 series.
  • the formation system 210 is substantially identical to the system illustrated and described in relation to FIG. 1 but with the addition of a structural support layer 250, such as a glass mat or scrim, between deposited layers of polyurethane composition 214, 214'.
  • a structural support layer 250 such as a glass mat or scrim
  • the structural support layer 250 is placed in contacting overlying relation to a first layer of polyurethane composition 214 following a first leveller 216.
  • a second layer of polyurethane composition 214' is then applied across the structural support layer 250 followed by a leveller 216' thereby yielding a sandwich structure for application of the textile face structure 220.
  • the location of support, stabilizing or reinforcement layer or material 250 can be determined by the amount of polyurethane composition added upstream and downstream of the support layer 250.
  • the support layer 250 may be located at the top of, in the middle of, or at the bottom of the polyurethane backing (FIGS. 23, 12, and 24, respectively), it may be located anywhere in between by controlling the add of polyurethane 214 and 214' in the system of FIG. 11.
  • one structural support layer 250 is in the form of woven or non-woven glass, although other materials including polyester, polypropylene, and the like may also be utilized if desired.
  • the textile face structure 220 may have any number of suitable constructions.
  • FIGS. 12-15 illustrate a number of constructions incorporating a structural support layer 250 such as may be formed on the system 210 using various face structures.
  • FIG 12 illustrates a tufted textile face structure 220 incorporating an arrangement of yarn elements 236 tufted through a primary backing 238 such as a scrim, a non-woven or the like.
  • a primary backing 238 such as a scrim, a non-woven or the like.
  • the upper layer of cured polyurethane composition 214' extends substantially between the structural support layer 250 and the primary backing 238 thereby aiding in locking the yarn elements 236 in place.
  • the lower layer of cured polyurethane composition 214 extends away from the structural support layer 250 to define a lower surface.
  • FIG. 13 illustrates a woven textile face structure 220A disposed in contacting relation to the upper layer of cured polyurethane composition 214'.
  • the upper layer of cured polyurethane composition 214' extends substantially between the structural support layer 250 and the underside of the woven textile face structure 220A and preferably migrates at least partially into the interstices between yarn elements forming the woven textile face structure 220A so as to promote good adhesion.
  • the lower layer of cured polyurethane composition 214 extends away from the structural support layer 250 to define a lower surface.
  • FIG. 14 illustrates a non-woven textile face structure 220B such as a needlepunched, flocked, spun bond or other non-woven construction disposed in contacting relation to the upper layer of cured polyurethane composition 214'.
  • the upper layer of cured polyurethane composition 214' extends substantially between the structural support layer 250 and the underside of the non-woven textile face structure 220B and preferably migrates at least partially into the interstices between fiber elements forming the non-woven textile face structure 220B so as to promote good adhesion.
  • the lower layer of cured polyurethane composition 214 extends away from the structural support layer 250 to define a lower surface.
  • FIG. 15 illustrates a bonded yarn textile face structure 220C incorporating an arrangement of yarn elements 237 bonded in place across a primary backing or substrate layer 244 by an adhesive 242 disposed across the upper surface of the primary backing layer 244.
  • the upper layer of cured polyurethane composition 214' extends substantially between the structural support layer 250 and the underside of the primary backing layer 244.
  • the lower layer of cured polyurethane composition 214 extends away from the structural support layer 250 to define a lower surface.
  • FIG. 16 illustrates a formation system 310 for production of surface coverings incorporating polyurethane with an intermediate structural support layer and with a backing.
  • elements corresponding to those previously described are designated by like reference numerals within a 300 series.
  • the formation system 310 is substantially identical to the system illustrated and described in relation to FIG. 11 but with the addition of a layer of backing such as felt 340 across the belt 312 at a position upstream of the location at which the polyurethane composition 314 is deposited.
  • a first layer of polyurethane composition 314 is deposited over the backing material or layer 340 and levelled by a first leveller 316.
  • the structural support layer 350 is placed in contacting overlying relation to the first layer of polyurethane composition 314 following a first leveller 316.
  • a second layer of polyurethane composition 314' is then applied across the structural support layer 350 followed by a leveller 316' thereby yielding a stabilized and backed sandwich structure for application of the textile face structure 320.
  • the textile face structure 320 may have any number of suitable constructions.
  • FIGS. 17-20 illustrate a number of constructions incorporating a structural support layer 350 and a backing 340 such as may be formed on the system 310 using various face structures.
  • FIG 17 illustrates a tufted textile face structure 320 incorporating an arrangement of yarn elements 336 tufted through a primary backing 338 such as a woven, a non-woven or the like.
  • the upper layer of cured polyurethane composition 314' extends substantially between the structural support layer 350 and the primary backing 338 thereby aiding in locking the yarn elements 336 in place.
  • the lower layer of cured polyurethane composition 314 extends away from the structural support layer 350 to the backing layer 340.
  • FIG. 18 illustrates a woven textile face structure 320A disposed in contacting relation to the upper layer of cured polyurethane composition 314'.
  • the upper layer of cured polyurethane composition 314' extends substantially between the structural support layer 350 and the underside of the woven textile face structure 320A and preferably migrates at least partially into the interstices between yarn elements forming the woven textile face structure 320A so as to promote good adhesion.
  • the lower layer of cured polyurethane composition 314 extends away from the structural support layer 350 to the backing layer 340.
  • FIG. 19 illustrates a non-woven textile face structure 320B such as a needlepunched, flocked, spun bond or other non-woven construction disposed in contacting relation to the upper layer of cured polyurethane composition 314'.
  • the upper layer of cured polyurethane composition 314' extends substantially between the structural support layer 350 and the underside of the non-woven textile face structure 320B and preferably migrates at least partially into the interstices between fiber elements forming the non-woven textile face structure 320B so as to promote good adhesion.
  • the lower layer of cured polyurethane composition 314 extends away from the structural support layer 350 to the backing layer 340.
  • FIG. 20 illustrates a bonded yarn textile face structure 320C incorporating an arrangement of yarn elements 337 bonded in place across a primary backing or substrate layer 344 by an adhesive 342 disposed across the upper surface of the primary backing layer 344.
  • the upper layer of cured polyurethane composition 314' extends substantially between the structural support layer 350 and the underside of the primary backing layer 340.
  • the lower layer of cured polyurethane composition 314 extends away from the structural support layer 350 to the layer of felt 340.
  • a tufted face surface covering like that of FIG. 2 is shown with a backing 60 such as a coating, film, or the like.
  • backing 60 may be an adhesive or other friction enhancing coating such as TractionBack coating offered by Milliken & Company of LaGrange, GA.
  • the underside or lower surface of polyurethane layer 14 or 214 may be textured, embossed, cleated, nubbed, ribbed, or the like to, for example, increase sliding friction with a floor or subfloor.
  • the lower surface of backing 140, 340, or 250, or of coating or film 60 or 160 may be embossed, textured, or the like.
  • the tufted face surface covering of FIG. 22 is like that of FIG. 7 with the addition of backing 160 such as a coating, film, or the like.
  • the tufted face surface covering of FIG. 23 is like that of FIG. 12 except that the support layer 250 is shown just below tufts 236.
  • the woven face surface covering of FIG. 24 is like that of FIG. 13 except that the support layer 250 is shown at the bottom of polyurethane 214.
  • FIGS. 25 - 27 relate to an alternative production process wherein the face material 20, 120, 220 is inverted and then laid on the belt 112. Next, polyurethane composition 114 is poured or applied to the back of the face material 2OA or 120A and doctored by blade 116.
  • a backing 140 is added over the polyurethane 114 and nip or gauge roll 162 presses backing 140 into the polyurethane 114.
  • the face material 120 tends to keep the belt 112 clean of polyurethane 114.
  • the face material 20, 2OA, 2OB, 20C 1 120, 120A, " 120B, 120C, 220, 220A, 220B, 220C, 320, 320A, 320B, and 320C may be formed of natural or synthetic fibers or materials, or blends thereof.
  • tufts 36 may be Nylon 6, Nylon 6,6, polyolefin, wool, or blends thereof.
  • face material 20 must be dyed or printed, it is preferred that it be dyed prior to addition of polyurethane 14.
  • Polyurethane 14 may include a polyol component, an isocyanate component, a catalyst, and other agents, fillers, additives, and the like. It has been discovered that the catalyst may be eliminated, that the polyol may be replaced with castor oil, or both.
  • castor oil was used in place of the polyol component of a two component MDI based polyurethane system typically having a polyol component and an isocyanate component.
  • the preferred filler is a post-consumer recycled soda lime glass having a pH in deionized water of greater than 8.4, more preferably greater than 9.0, most preferably greater than 10.0.
  • the recycled soda lime glass had a pH of 10.73, in another test the pH was 9.24.
  • Such a recycled soda lime glass also has the following specifications:
  • 70 to 100 mesh 100 to 120 mesh, 70 to 325 mesh, 80 to 325 mesh, 100 to 325 mesh
  • recycled post-industrial waste filler such as coal fly ash
  • recycled post-consumer waste filler such as crushed glass
  • the surface coverings of the present invention may be hardback or cushion back products.
  • One can increase the cushion or resilience of the backing by adding more air, more blowing agent, felt, thickness, or the like.
  • a polyurethane hardback or cushion back product such as a polyurethane hardback or cushion back carpet tile have the structure of one of FIGS. 2 - 5, 7 - 10, 12 - 15, 17 - 20, and 21 - 26.
  • a polyurethane backed area rug, roll goods, or floor mat of the present invention have the structure of one of FIGS. 2 - 5, 21 , and 25.
  • an indoor/outdoor polyurethane backed area rug having a structure like that of FIG.
  • a tufted face greige carpet material had a cut pile, Nylon 6,6, jet dyed, 20 oz/yd 2 face yarn, 8 th gauge, tufted through a 4 oz/yd 2 non-woven, polyester primary backing, was laid over a mechanically frothed, MDI based polyurethane at a 750 gram cup weight and an average add-on of 27 oz/yd 2 .
  • the uncured polyurethane composition was poured onto a belt, doctored and then joined to the carpet greige goods under a marriage roll. The polyurethane was cured under heat.
  • an indoor/outdoor polyurethane backed area rug had an overall average height of about 7458.03 ⁇ m (micrometers), an average polyurethane backing height of about 1507.64 ⁇ m (micrometers), and a total weight of about 51.79 oz/yd 2 .
  • a nip, marriage, or gauge roll 62 presses the face material 20, 120, 220, 320 into the uncured polyurethane composition and sets the height of the total product (prior to any chemical blowing).
  • the surface covering of the present invention may in at least one embodiment be 6 foot wide roll goods sometimes referred to a 6 foot broad loom.
  • gravitational forces should dominate the sum of other process induced forces. Examples of these other forces are tensions or thermal contractions from cooling.
  • the gravity model on a cantilever beam .
  • W the carpet weight (lbs/yd 2 )
  • the backing materials are characterized by higher density. This may be achieved by the selection of dense raw materials such as dense fillers.
  • dense raw materials such as dense fillers.
  • CaCU 3 is a common filler used in floor covering products. It has a specific gravity (SG) of 2.6. If a filler is selected with a SG greater than 5 and the concentration by weight remained the same (>50%), then a significant shift in the compound density would occur. If the choice was Iron (Fe) with a SG of 7.8 and with a concentration of 70%, then the density could be nearly tripled resulting in a 2/3 reduction in thickness at the same backing weight.
  • Iron Iron
  • a ferromagnetic material is selected as the filler, it creates the option of selectively creating permanent magnetic properties in the backing.
  • a magnetron located on or after the production range could be switched on/off to produce the optional magnetic property.
  • the ferromagnetic material is an oxide, such as ferrite, then the material will not only be dense and magnetizable, but will also starve a fire event from oxygen and self extinguish.
  • an exemplary surface covering such as a lay flat flooring product or tile has an upper show surface and a backing. It is preferred that the show surface such as a carpet or textile material be bonded to the backing during manufacture of the surface covering.
  • Backing preferably has a very low bending modulus (very flexible), a high density, is thin, and is resilient. Flexibility (low modulus) and high density (heavy) may be the two most important factors that effect tile flatness.
  • the face or upper show surface is preferably an aesthetically pleasing carpet or textile material.
  • a graphics tufted, printed, dyed, or the like decorative carpet or textile tufted, woven, bonded, nonwoven, flocked, needled, knit, or the like
  • natural and/or synthetic fibers such as wool, polyamide (Nylon), polyester, polyolefin, blends, and the like.
  • the face exits the manufacturing process with substantially zero tension and resists growth or shrinkage during product use.
  • lay flat product may be any desired shape and may be in the form of roll goods, modular product, 6-foot broadloom, 12- foot broadloom, carpet, carpet tile, flooring, floor tile, floor covering, floor mat, stabilized broadloom, rug, runner, or the like.
  • a 6-foot wide roll of lay flat composite may be cut into tiles, rugs, mats, runners, and/or the like.
  • the face 12 is not limited to a precoated carpet or greige goods (non- precoated) face material although such a face may be preferred. Also, it may be possibly preferred that the face be range dyed (jet dyed) prior to lamination or backing to further reduce any latent stresses or tensions in the face.
  • lamination or backing of the face may be carried out at a low enough temperature and the face material or materials (for example, primary backing and tufts) may be selected to avoid the addition of stresses or instability (such as shrinkage) during processing, backing, lamination, curing, etc.
  • the face material or materials for example, primary backing and tufts
  • stresses or instability such as shrinkage
  • the backing includes one or more stabilizing layers, backing layers, foam or cushion layers, a friction enhancing coating, magnetic or magnetizable particles, remains flexible at standard operating temperatures, and/or the like.
  • the backing is a thin (less than about 5mm, preferably less than about 3mm), very flexible, dense, resilient, polymeric material.
  • the face is a jet dyed, tufted, polyamide (Nylon) 6 or 6,6 carpet face with a stable primary backing of, for example, woven and/or nonwoven polyamide (Nylon), polyester, and/or stabilized polypropylene.
  • the carpet face has a tuft lock or precoat of the same material as backing, for example, a polyurethane precoat and a polyurethane backing.
  • a hardback floor tile has a flexible, heavy (dense), thin backing with the following preferred properties:
  • backing density about 180 to 250 lbs/ft 3 (3-4 g/cc)
  • backing thickness about 0.15 inch
  • tile drape about 2 to 4 inches of drape on a 6 inch tile overhang
  • resin may be an aqueous emulsion, hot melt, or multipart reaction applied with a coating blade, film lamination, or in- situ extrusion at speeds greater than 50 fpm (feet per minute).
  • the adhesive should provide a moisture barrier in the composite structure.
  • the adhesive may optionally contain recycled content. 1.3.1. >50% recycled content 1.3.2. preferably post consumer recycled content
  • the adhesive may optionally provide enhanced flammability resistance to meet vertical flammability tests.
  • the adhesive may become an after life cycle "zipper" to separate the tufted substrate from the PU cushion structure.
  • the composite using the adhesive can be recycled into Item 1.3 or into the PU cushion.
  • carpet composite may be desized and integrated into the filler integral to the adhesive.
  • the PU cushion structure may be substituted with another cushion material that:
  • the PU cushion structure may be substituted with another material that:
  • Standard carpet knives easily cut the composite.
  • the adhesive may provide a moisture barrier in the composite structure.
  • the adhesive may optionally contain recycled content.
  • the adhesive may optionally provide enhanced flammabilfty resistance to meet vertical flammability tests.
  • the adhesive may become an after life cycle "zipper" to separate the tufted substrate from the PU cushion structure.
  • the adhesive should be commercially competitive.
  • the composite using the adhesive can be recycled into item 1.2.
  • the PU cushion structure may be substituted with another material that:
  • the PU cushion structure may be substituted with another material that:
  • a lay flat flooring product has a backing that is flexible, dense, thin, and resilient, flexible — product drape greater than about 2 inches of drape on a 6- inch product overhang or a bending modulus less than about 2000 psi; dense — backing density of greater than about 20 lbs/ft 3 ; thin — backing height (thickness) of less than about 10 mm; resilient - product can be rolled or folded at least once and will go back to a lay flat position.
  • a lay flat hardback flooring product has a backing that is flexible, dense, thin, and resilient, flexible — product drape greater than about 3 inches of drape on a 6- inch product overhang or a bending modulus less than about 1000 psi; dense — backing density of greater than about 50 lbs/ft 3 ; thin — backing height (thickness) of less than about 5 mm; resilient — product can be rolled or folded several times and will go back to a lay flat position.
  • a lay flat cushion back flooring product has a backing that is flexible, dense, thin, and resilient, flexible - product drape greater than about 2 inches of drape on a 6- inch product overhang or a bending modulus less than about 3000 psi; dense - backing density of greater than about 15 lbs/ft 3 ; thin — backing height (thickness) of less than about 15 mm; resilient - product can be rolled or folded at least once and will go back to a lay flat position.
  • a lay flat hardback flooring product has a backing that is flexible, dense, thin, and resilient, flexible — product drape greater than about 4 inches of drape on a 6- inch product overhang or a bending modulus less than about 500 psi; dense - backing density of greater than about 200 lbs/ft 3 ; thin - backing height (thickness) of less than about 3 mm; resilient - product can be rolled or folded many times and will go back to a lay flat position.
  • a lay flat carpet tile product has a backing that is flexible, dense, thin, and resilient, flexible — product drape greater than about 2 inches of drape on a 6- inch product overhang; dense — backing density of greater than about 25 lbs/ft 3 ; thin — backing height (thickness) of less than about 5 mm; resilient — product can be rolled or folded at least once and will go back to a lay flat position.
  • a lay flat roll goods product has a backing that is flexible, dense, thin, and resilient, flexible — product drape greater than about 4 inches of drape on a 6- inch product overhang; dense — backing density of greater than about 100 lbs/ft 3 ; thin — backing height (thickness) of less than about 5 mm; resilient - product can be rolled or folded several times and will go back to a lay flat position.
  • a lay flat floor mat product has a backing that is flexible, dense, thin, and resilient, flexible - product drape greater than about 2 inches of drape on a 6- inch product overhang; dense — backing density of greater than about 50 lbs/ft 3 ; thin - backing height (thickness) of less than about 5 mm; resilient - product can be rolled or folded at least once and will go back to a lay flat position.
  • a lay flat flooring product includes a face material and a backing bonded thereto during product manufacture.
  • a lay flat flooring product is a laminated composite of a face, a backing, and an adhesive layer therebetween.
  • the adhesive may be the same material as the backing, may be less filled or unfilled, or may be of a different material.
  • the adhesive is flexible, resilient, and thin.
  • a lay flat flooring product comprising an upper show surface disposed in overlying relation to a single or multi-layer, flexible, heavy, thin backing, said backing having at least one of a bending modulus of less than about 3,000 psi, a thickness of less than about 15 mm, and a density of greater than about 15 lbs/ft 3 .
  • the surface covering above further comprising a fibrous backing sheet disposed across an underside portion of the backing.
  • the surface covering above, wherein the show surface is a decorative textile or carpet layer.
  • the surface covering above, wherein the carpet or textile is formed of polyester, Nylon, polyolefin, and combinations thereof.
  • the surface covering above, wherein the carpet or textile is knit, woven, tufted, bonded, nonwoven, needled, and the like.
  • stabilizing layer is at least one of woven or nonwoven glass.
  • the surface covering above further comprising a fibrous backing sheet disposed across an underside portion of the backing.
  • a method of producing a surface covering such as a lay flat flooring product with a carpet or textile surface and a flexible, heavy, thin, resilient backing comprises the steps of: preparing a backing composition; depositing the backing composition in a layer; placing a carpet or textile surface material on the deposited backing layer to form a multi-layer structure; pressing the multi-layer structure while setting the backing with, for example, heat so that the backing composition forms a flexible, heavy, thin, resilient backing, and wherein the carpet or textile surface material is bonded to the backing.
  • the method above wherein the carpet or textile surface material is at least one of graphics tufted, printed or dyed.
  • a surface covering such as a lay flat flooring product having an upper show surface disposed in overlying relation to a single or multi-layer, flexible, heavy, thin, resilient backing.
  • a fibrous backing sheet may be disposed across an underside of the backing.
  • the surface covering may be a tile or roll goods.
  • the show surface may be a decorative textile or carpet layer.
  • a lay flat flooring product comprises an upper show surface disposed in overlying relation to a single or multi-layer, flexible, heavy, thin backing, said backing having at least one of a bending modulus of less than about 3,000 psi, a thickness of less than about 15 mm, and a density of greater than about 15 lbs/ft 3 .
  • the product above further comprises a flexible fibrous backing sheet disposed at a position below an underside of the backing.
  • the flooring product is one of a tile and roll goods.
  • the show surface is a decorative textile or carpet layer.
  • the show surface is formed of a material selected from polyester, polyamide (Nylon), polyolefin, and combinations thereof.
  • the show surface is one of knit, woven, tufted, bonded, nonwoven, needled, graphics tufted, printed, dyed, and combinations thereof.
  • the product above, wherein the backing is resilient.
  • the product above, wherein the show surface is disposed in overlying relation to a multi-layer backing.
  • the backing includes at least one stabilizing layer.
  • said stabilizing layer is at least one of woven or nonwoven glass.
  • said backing has a bending modulus of less than about 3,000 psi, a thickness of less than about 15 mm, and a density of greater than about 15 lbs/ft 3 .
  • said backing preferably has a bending modulus of less than about 2,000 psi, a thickness of less than about 10 mm, and a density of greater than about 20 lbs/ft 3 .
  • said backing has a bending modulus of less than about 1 ,000 psi, a thickness of less than about 5 mm, and a density of greater than about 50 lbs/ft 3 .
  • said backing has a bending modulus of less than about 1 ,000 psi, a thickness of less than about 4 mm, and a density of greater than about 100 lbs/ft 3 .
  • said backing has a bending modulus of less than about 500 psi, a thickness of less than about 3 mm, and a density of greater than about 200 lbs/ft 3 .
  • the carpet or textile face material is at least one of graphics tufted, printed or dyed.
  • the method above further comprising the step of adding one or more additional layers in, over or under the backing composition.
  • the carpet or textile face material is at least one of graphics tufted, printed, and dyed.
  • the method above further comprising the step of adding one or more additional layers in, over or under the backing composition layer.
  • the preferred backing is filled polyurethane (greater than 50% by weight filled).
  • polyurethane greater than 50% by weight filled.
  • other materials which will provide a relatively heavy, thin, flexible, and resilient backing may be used.
  • rubber, latex, extruded polymers, hot melts, adhesives, films, acrylics, and the like may be used.
  • the preferred adhesive is an unfilled or lightly filled polyurethane (less than 20% by weight filied).
  • polyurethane adhesive is preferred, other known adhesives may be used. For example, hot melts, polymers, polyolefins, extruded polymers, acrylics, or the like.
  • the preferred fillers are dense fillers having, for example, a specific gravity (SG) greater than 2.
  • Exemplary fillers include magnetite, iron oxides, ferrite, iron, steel, nickel, metals, recycled metals, barite, sand, foundry sand, used foundry sand, glass, recycled glass, recycled soda lime glass, glass particles, glass fibers, gypsum, recycled gypsum, coal fly ash, calcium carbonate, blends and combinations thereof.
  • Fillers are typically added in amounts by weight totaling from 0% to about 95%.
  • fillers with a specific gravity (5G) over 5 are preferred (such as iron oxide).
  • magnetic or magnetizable filler materials are preferred. Such ferromagnetic fillers may be added at 5% by weight or greater filler loads, preferably 10% or greater by weight.
  • a method of producing a lay flat product includes the steps of:
  • a floor covering product comprising a textile face structure disposed in overlying contacting relation to at least one layer of polyurethane backing composition filled with at least one filler selected from calcium carbonate, sand, used foundry sand, recycled gypsum, recycled glass, glass particles, glass fibers, cork, coal fly ash, recycled metal, rubber, recycled rubber, and combinations thereof.
  • a method of forming combinations of floor covering products selected from carpet, carpet tiles, area rugs, floor tiles, runners, mats, and floor mats on a single processing line comprising the steps of:
  • a system of polyurethane backed floor covering products such as tiles, mats, roll goods, and the like produced on a single polyurethane range.
  • each such product includes at least 10% by weight recycled content.
  • the system of floor covering products above wherein each such product includes at least 10% by weight post consumer recycled content.
  • the surface covering above further comprising a backing disposed across a side of the layer of polyurethane facing away from the textile face structure.
  • the surface covering above further comprises a structural support layer disposed in embedded relation within the layer of polyurethane.
  • the surface covering above further comprises a structural support layer disposed in embedded relation within the layer of polyurethane and a backing disposed across a side of the layer of polyurethane facing away from the textile face structure.
  • the surface covering above wherein the surface covering is a carpet tile, an area rug, or a floor mat.
  • a method of forming combinations of the group consisting of carpet, carpet tile, area rugs and floor mats on a single processing line comprises the steps of:
  • a surface covering such as a carpet, carpet tile, area rug, floor mat or the like incorporating a textile face disposed in contacting overlying relation to at least a polyurethane layer.
  • One or more optional intermediate structure layers may be disposed within the polyurethane and one or more optional backing layers may be disposed across the underside of the polyurethane.
  • a floor covering product comprises a textile face structure disposed in overlying contacting relation to at least one layer of polyurethane backing composition filled with at least one filler selected from calcium carbonate, sand, used foundry sand, recycled gypsum, recycled glass, glass particles, glass fibers, cork, coal fly ash, recycled metal, rubber, recycled rubber, and combinations thereof.
  • the product above further comprises a backing material disposed at a position below an underside of the layer of polyurethane and operatively bonded thereto.
  • the product above further comprises at least one structural support layer disposed in, on or over said layer of polyurethane.
  • the product above further comprises a structural support layer disposed in embedded relation within the layer of polyurethane and a backing material disposed across an underside of the layer of polyurethane.
  • the floor covering product is a product selected from carpet, carpet tiles, floor tiles, rugs, mats, floor mats, modular product, roll goods, broadloom carpet, 6 foot broadloom, 12 foot broadloom, runners, and area rugs.
  • At least one filler in said layer of polyurethane is post consumer recycled soda lime glass, said recycled soda lime glass having a pH in deionized water of greater than 8.4 and an average particle size of greater than 325 mesh.
  • the floor covering product is an outdoor product.
  • a method of forming combinations of floor covering products selected from carpet, carpet tiles, area rugs, floor tiles, runners, mats, and floor mats on a single processing line comprises the steps of:
  • the method above further comprising the step of adding a release layer, material, or film over the belt prior to the delivering step.
  • At least two different floor covering products produced by the method above At least two different floor covering products produced by the method above.
  • a system of polyurethane backed floor covering products as described above such as tiles, mats, roll goods, and the like produced on a single polyurethane range.
  • each such product includes at least 10% by weight recycled content.
  • each such product includes at least 10% by weight post consumer recycled content.
  • face material 20 must be dyed or printed, it is preferred that it be dyed prior to addition of polyurethane 14.
  • Polyurethane 14 may include a polyol component, an isocyanate component, a catalyst, and other agents, fillers, additives, and the like. It has been discovered that the catalyst may be eliminated, that the polyol may be replaced with castor oil, or both.
  • the surface coverings of the present invention may be hardback or cushion back products.
  • a polyurethane hardback or cushion back product such as a polyurethane hardback or cushion back carpet tile have the structure of one of FIGS. 2 - 5, 7 - 10, 12 - 15, 17 - 20, and 21 - 26.
  • a polyurethane backed area rug, roll goods, or floor mat of the present invention have the structure of one of FIGS. 2 - 5, 21, and 25.
  • a tufted face greige carpet material had a cut pile, Nylon 6,6, jet dyed, 20 oz/yd 2 face yarn, 8 th gauge, tufted through a 4 oz/yd 2 non-woven, polyester primary backing, was laid over a mechanically frothed, MDI based polyurethane at a 750 gram cup weight and an average add-on of 27 oz/yd 2 .
  • the u ⁇ cured polyurethane composition was poured onto a belt, doctored and then joined to the carpet greige goods under a marriage roll. The polyurethane was cured under heat.
  • an indoor/outdoor polyurethane backed area rug had an overall average height of about 745 ⁇ .03 ⁇ m (micrometers), an average polyurethane backing height of about 1507.64 ⁇ m (micrometers), and a total weight of about 51.79 oz/yd 2 .
  • a nip, marriage, or gauge roll 62 presses the face material 20, 120, 220, 320 into the u ⁇ cured polyurethane composition and sets the height of the total product (prior to any chemical blowing).
  • the surface covering of the present invention may in at least one embodiment be 6 foot wide roll goods sometimes referred to a 6 foot broad loom.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Carpets (AREA)
  • Laminated Bodies (AREA)

Abstract

Surface de recouvrement, telle qu'une moquette, un carreau de moquette, un tapis de surface, un tapis de sol ou équivalents, incorporant une face en textile disposée dans une relation de contact par superposition sur au moins une couche en polyuréthane. Une ou plusieurs couches de structure intermédiaire éventuelles peuvent être disposées à l'intérieur du polyuréthane et une ou plusieurs couches de support éventuelles peuvent être disposées à travers le côté inférieur du polyuréthane.
PCT/US2006/049020 2006-10-06 2006-12-21 Produits à support de polyuréthane et procédés WO2008041999A1 (fr)

Priority Applications (2)

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PCT/US2007/021430 WO2008045342A2 (fr) 2006-10-06 2007-10-05 Produits à renfort de polyuréthanne, et procédés
CA002663809A CA2663809A1 (fr) 2006-10-06 2007-10-05 Produits a renfort de polyurethanne, et procedes

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US11/539,537 US20080085391A1 (en) 2006-10-06 2006-10-06 Polyurethane backed products and methods

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