US20120027962A1 - Special Turf Filler - Google Patents
Special Turf Filler Download PDFInfo
- Publication number
- US20120027962A1 US20120027962A1 US13/270,009 US201113270009A US2012027962A1 US 20120027962 A1 US20120027962 A1 US 20120027962A1 US 201113270009 A US201113270009 A US 201113270009A US 2012027962 A1 US2012027962 A1 US 2012027962A1
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- US
- United States
- Prior art keywords
- filler
- turf
- silica sand
- coated
- particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
- E01C13/08—Surfaces simulating grass ; Grass-grown sports grounds
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
-
- 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
- D06N7/0065—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 pile
-
- 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
- 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
- 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
- D06N2205/02—Dispersion
- D06N2205/023—Emulsion, aqueous dispersion, latex
-
- 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
- D06N2205/04—Foam
-
- 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
- D06N2209/00—Properties of the materials
- D06N2209/08—Properties of the materials having optical properties
- D06N2209/0807—Coloured
- D06N2209/0823—Coloured within the layer by addition of a colorant, e.g. pigments, dyes
-
- 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
- D06N2213/00—Others characteristics
- D06N2213/06—Characteristics of the backing in carpets, rugs, synthetic lawn
- D06N2213/063—Porous back coating or pre-coat
-
- 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
- Y10T428/23921—With particles
-
- 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
-
- 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
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
-
- 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
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
-
- 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
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2993—Silicic or refractory material containing [e.g., tungsten oxide, glass, cement, etc.]
- Y10T428/2996—Glass particles or spheres
-
- 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
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
- Y10T428/2998—Coated including synthetic resin or polymer
Definitions
- the instant invention is directed to a filler for use with artificial surfaces such as athletic playing fields, landscaped public and private areas.
- the usual natural and colored fillers have several drawbacks to include mounding and damage to the artificial fiber due to an abrasive cutting action brought about by the sharp edges of sand particles.
- Another object of the invention is the provision of filler for artificial turf consisting of rounded granules.
- Another object of the invention is the provision of a filler for artificial turf in which each granule is of a restricted size profile.
- Another object of the invention is the provision of a filler for an artificial turf surface in which the filler is coated with an acrylic based sealer.
- a further object of the invention is the provision of a silica sand filler coated with a colored acrylic based sealer for use with an artificial turf.
- an object of the invention is an artificial turf to include a pile fabric secured in position on the ground and a filler evenly distributed on the surface of said pile fabric with a repose of less than 30° and a resistance to washing away.
- the invention is directed to an aggregate turf filler for use with the turf of athletic fields and landscaped areas.
- the turf may be natural or artificial.
- the turf filler is composed of:
- the acrylic coating includes natural color pigment of a selected color which is preferably iron oxide (FeO 2 ) for black and chrome III oxide (Cr 2 O 3 ) for green. Other colors may be obtained by blending basic colors.
- the color pigment and the acrylic based sealer are preferably combined at a ratio of 1 part color pigment to 2 parts acrylic sealer.
- the aggregate is evenly applied over the turf to a level of between 0.25 to 2.00 inches.
- the method further includes providing that the colorant is iron oxide (FeO 2 ) or chrome III oxide (Cr 2 O 3 ) and is normally mixed with the acrylic based sealer at a 1 to 2 ratio.
- the colorant is iron oxide (FeO 2 ) or chrome III oxide (Cr 2 O 3 ) and is normally mixed with the acrylic based sealer at a 1 to 2 ratio.
- the method also includes spreading the aggregate filler over artificial playing surfaces or landscaped surfaces at a depth which is normally between 0.25 to 2.00 inches.
- the method of producing a decorative and environmentally safe aggregate filler also includes:
- the method of producing a decorative and environmentally safe aggregate filler including providing an acrylic based sealer consisting of acrylic polymer, mineral spirits, ethylbenzene and xylene and coating silica sand particles sized between 12 and 40 mesh with the sealer.
- FIG. 1 is a perspective view of a golf green, one of the athletic fields with which the filler of the invention finds use.
- FIG. 2 is a side cutaway view taken along line 2 - 2 of FIG. 1 of an area incorporating the filler of the invention.
- FIG. 3 is a diagrammatic side view showing the filler stacked to its maximum angle of repose, i.e. ⁇ 30°,
- FIG. 4 is an exploded section view of coated silica sand granules.
- FIG. 5 is a sectional top view showing the filler disposed among tufts.
- fillers with both natural and artificial turf areas are well known. Also, the use of colored fillers with both natural and artificial turf areas is well known.
- the fillers act to provide a more even surface area having acceptable resistance to impact and recovery from impact. Fillers further provide for improved drainage and controlled hardness.
- FIG. 1 shows a putting green 10 with which the aggregate filler of the invention may be applied.
- the aggregate may be of natural color or it may be colored as desired.
- the putting green may have a natural putting surface or an artificial putting surface.
- Other surfaces such as soccer fields, football fields, volleyball fields, baseball fields, etc. either natural and artificial, find beneficial results both aesthetically and structurally by using the filler of the invention.
- Landscaped areas, both natural and artificial also benefit from the use of the filler of the invention.
- FIGS. 2-5 there is seen a surface area 12 in which artificial grass-like tufts 14 extend from backing surface 16 in the usual manner.
- Filler 18 comprising aggregate granules 20 , is evenly spread over area 12 to a height of 0.25 to 2.00 inches.
- granules 20 are substantially round and also are substantially of equal size as better illustrated in FIGS. 3-5 . This feature results in the filler resisting compacting because there are no small particles to settle to the bottom.
- the round and equally sized particles also resist mounding because, so structured, they present an angle of repose of ⁇ 30°. Note FIG. 3 .
- the particles arranged and structured as shown in FIGS. 2 and 5 also allow even drainage. Because there are no minute particles in the filler to fill the openings between particles, the particles or granules also resist erosion.
- the granules are coated with a sealer and are either of natural color or of a desired color.
- FIGS. 2 and 5 The arrangement shown in FIGS. 2 and 5 is equally representative of natural turf areas in which case tufts 14 would comprise natural blades of grass extending from ground surface 16 .
- Filler 18 is distributed as earlier described in either natural color form or colored form.
- the filler of the instant invention is formed of silica sand (SiO 2 ) occurs naturally in layers or shelves. It must be crushed into particle or granular form for use as the filler of the instant invention. Normally crushed silica sand granules form in a generally round configuration with few if any sharp edges.
- the crushed particles must be sifted through a screening process. It has been found that granules of a size range of between 12 and 40 mesh are most suitable for use as a filler with the above-described surfaces. Further, the filler should be within five mesh sizes in any one application.
- Granules of silica sand are somewhat porous.
- an acrylic polymer based waterproofing sealer comprises mineral spirits, xylene, ethylbenzene and acrylic polymer.
- the acrylic polymer based sealer is clear and therefore, the granules may still have their natural appearance after coating.
- FIG. 4 shows a cutaway of a coated granule of silica sand. The coating further acts to remove rough edges which may occur over the surface of the particles.
- the colorant of choice is natural pigment in order to ensure that the filler not be a health hazard.
- Desired colorants for coloring the silica sand is iron oxide (FeO 2 ) for black and chrome (III) oxide (Cr 2 O 3 ) for green.
- Other natural colorants and blends thereof are available should other colors be desired. It has been found, however, that black is the color which most enhances artificial turf or natural turf.
- the sealant In order to prepare the pigment for application with the silica sand the sealant, is first mixed with the clear acrylic based sealant.
- the desired ratio for obtaining a mid-range hue is one part colorant to two parts sealer. This ratio may be adjusted to include more or less colorant in order to obtain the desired color depth.
- the colorant and the sealer must be thoroughly mixed and applied immediately as the colorant is not soluble and will separate.
- the aggregate and colored sealer must be thoroughly mixed in order to ensure complete coverage of the aggregate. It is suggested that a cement mixer be used because its aggressive tumbling action prevents clustering of the coated granules. It is preferred that the duration of the mixing or tumbling action is about five minutes.
- the ratio of sealant/colorant to aggregate is one gallon per ton. Again, more or less sealer/colorant may be used dependent on the desired color and coating desired.
- the granules are discharged onto a drying area. In about five minutes the colored/sealed aggregate is ready for transport to areas of application.
- the colored/coated silica sand may also be used to decorate cement and masonry structures. Also, they may be used as ground cover. These applications are particularly true of those granules which fall outside the size limits of the turf filler.
Abstract
An aggregate turf filler for use with the turf of athletic fields and landscaped areas which comprise crushed silica sand particles (SiO2) which are substantially round in shape and are sized to be between 12 and 40 mesh. An acrylic based sealer covering the outer surface of each of the silica sand particles. Finally, providing that the silica sand particles have a smooth outer surface, possess an angle of repose of less than 30°, repel water, resist compacting, present no damaging sharp edges when incorporated with the turf and are environmentally safe.
Description
- The instant invention is directed to a filler for use with artificial surfaces such as athletic playing fields, landscaped public and private areas.
- Artificial surfaces for the above stated uses are becoming more and more common for various reasons to include aesthetic appearance, maintenance, evenness of the surface, etc. Fillers for use with such surfaces are also common. Normally such fillers would include sand, crumb rubber and crushed stone. It is also known to color these fillers to enhance the appearance of the surface.
- The usual natural and colored fillers have several drawbacks to include mounding and damage to the artificial fiber due to an abrasive cutting action brought about by the sharp edges of sand particles.
- It is an object of this invention to provide a filler for artificial turf which will not mound.
- Another object of the invention is the provision of filler for artificial turf consisting of rounded granules.
- Another object of the invention is the provision of a filler for artificial turf in which each granule is of a restricted size profile.
- Another object of the invention is the provision of a filler for an artificial turf surface in which the filler is coated with an acrylic based sealer.
- A further object of the invention is the provision of a silica sand filler coated with a colored acrylic based sealer for use with an artificial turf.
- Finally, an object of the invention is an artificial turf to include a pile fabric secured in position on the ground and a filler evenly distributed on the surface of said pile fabric with a repose of less than 30° and a resistance to washing away.
- The invention is directed to an aggregate turf filler for use with the turf of athletic fields and landscaped areas. The turf may be natural or artificial. The turf filler is composed of:
-
- silica sand particles (SiO2) which are substantially round in shape and are sized to be between 12 and 40 mesh. The particles are coated with an acrylic sealer which seals the outer surface of each of the silica sand particles. So treated the silica sand particles possess an angle of repose of less than 30°, repel water, resist compacting, present no damaging sharp edges when incorporated with the turf and are environmentally safe. The silica sand particles are sized to be within no more than five mesh sizes.
- The acrylic coating includes natural color pigment of a selected color which is preferably iron oxide (FeO2) for black and chrome III oxide (Cr2O3) for green. Other colors may be obtained by blending basic colors. The color pigment and the acrylic based sealer are preferably combined at a ratio of 1 part color pigment to 2 parts acrylic sealer.
- The aggregate is evenly applied over the turf to a level of between 0.25 to 2.00 inches.
- The invention is also directed to a method of producing an aggregate filler for use with athletic fields and landscaped area which includes the steps of:
-
- (A) forming silica sand particles (SiO2) to be substantially round;
- (B) sizing the silica sand particles to be in a range between 12 and 40 mesh;
- (C) combining a clear acrylic based sealer and a natural colorant forming a colored acrylic sealer; and
- (D) mixing the silica sand with the colored acrylic based sealant forming an environmentally safe coated aggregate filler having an angle of repose of less than 30°.
- The method further includes providing that the colorant is iron oxide (FeO2) or chrome III oxide (Cr2O3) and is normally mixed with the acrylic based sealer at a 1 to 2 ratio.
- The method also includes spreading the aggregate filler over artificial playing surfaces or landscaped surfaces at a depth which is normally between 0.25 to 2.00 inches.
- The method of producing a decorative and environmentally safe aggregate filler also includes:
-
- (A) crushing silica sand into particles;
- (B) screening the particles and selecting screened particles to be within five mesh sizes;
- (C) blending an acrylic based sealant and a colorant at a ratio of between 0.5-1.5 part colorant and 1.5-2.5 acrylic sealant; and,
- (D) mixing the blended acrylic based sealer and colorant with the aggregate filler forming a colored aggregate filler.
- The method of producing a decorative and environmentally safe aggregate filler including providing an acrylic based sealer consisting of acrylic polymer, mineral spirits, ethylbenzene and xylene and coating silica sand particles sized between 12 and 40 mesh with the sealer.
-
FIG. 1 is a perspective view of a golf green, one of the athletic fields with which the filler of the invention finds use. -
FIG. 2 is a side cutaway view taken along line 2-2 ofFIG. 1 of an area incorporating the filler of the invention. -
FIG. 3 is a diagrammatic side view showing the filler stacked to its maximum angle of repose, i.e. <30°, -
FIG. 4 is an exploded section view of coated silica sand granules. -
FIG. 5 is a sectional top view showing the filler disposed among tufts. - The use of fillers with both natural and artificial turf areas is well known. Also, the use of colored fillers with both natural and artificial turf areas is well known. The fillers act to provide a more even surface area having acceptable resistance to impact and recovery from impact. Fillers further provide for improved drainage and controlled hardness.
- Turning now to the drawings,
FIG. 1 shows a putting green 10 with which the aggregate filler of the invention may be applied. The aggregate may be of natural color or it may be colored as desired. The putting green may have a natural putting surface or an artificial putting surface. Other surfaces such as soccer fields, football fields, volleyball fields, baseball fields, etc. either natural and artificial, find beneficial results both aesthetically and structurally by using the filler of the invention. Landscaped areas, both natural and artificial, also benefit from the use of the filler of the invention. - Turning now to
FIGS. 2-5 , there is seen asurface area 12 in which artificial grass-like tufts 14 extend frombacking surface 16 in the usual manner.Filler 18, comprisingaggregate granules 20, is evenly spread overarea 12 to a height of 0.25 to 2.00 inches. It will be noted thatgranules 20 are substantially round and also are substantially of equal size as better illustrated inFIGS. 3-5 . This feature results in the filler resisting compacting because there are no small particles to settle to the bottom. The round and equally sized particles also resist mounding because, so structured, they present an angle of repose of <30°. NoteFIG. 3 . - The particles arranged and structured as shown in
FIGS. 2 and 5 also allow even drainage. Because there are no minute particles in the filler to fill the openings between particles, the particles or granules also resist erosion. - The granules are coated with a sealer and are either of natural color or of a desired color.
- The arrangement shown in
FIGS. 2 and 5 is equally representative of natural turf areas in whichcase tufts 14 would comprise natural blades of grass extending fromground surface 16.Filler 18 is distributed as earlier described in either natural color form or colored form. - The filler of the instant invention is formed of silica sand (SiO2) occurs naturally in layers or shelves. It must be crushed into particle or granular form for use as the filler of the instant invention. Normally crushed silica sand granules form in a generally round configuration with few if any sharp edges.
- Because particle or granule size is critical to the invention, the crushed particles must be sifted through a screening process. It has been found that granules of a size range of between 12 and 40 mesh are most suitable for use as a filler with the above-described surfaces. Further, the filler should be within five mesh sizes in any one application.
- Granules of silica sand are somewhat porous. In order to eliminate this feature and also to provide the granules with an outer surface which is both water proof and very slick it is desirable that the granules be coated with an acrylic polymer based waterproofing sealer. The coating of choice comprises mineral spirits, xylene, ethylbenzene and acrylic polymer. The acrylic polymer based sealer is clear and therefore, the granules may still have their natural appearance after coating.
FIG. 4 shows a cutaway of a coated granule of silica sand. The coating further acts to remove rough edges which may occur over the surface of the particles. - It has also been found that it may be desirable to color the silica sand for a desired aesthetic effect. The colorant of choice is natural pigment in order to ensure that the filler not be a health hazard. Desired colorants for coloring the silica sand is iron oxide (FeO2) for black and chrome (III) oxide (Cr2O3) for green. Other natural colorants and blends thereof are available should other colors be desired. It has been found, however, that black is the color which most enhances artificial turf or natural turf.
- In order to prepare the pigment for application with the silica sand the sealant, is first mixed with the clear acrylic based sealant. The desired ratio for obtaining a mid-range hue is one part colorant to two parts sealer. This ratio may be adjusted to include more or less colorant in order to obtain the desired color depth.
- The colorant and the sealer must be thoroughly mixed and applied immediately as the colorant is not soluble and will separate. The aggregate and colored sealer must be thoroughly mixed in order to ensure complete coverage of the aggregate. It is suggested that a cement mixer be used because its aggressive tumbling action prevents clustering of the coated granules. It is preferred that the duration of the mixing or tumbling action is about five minutes. The ratio of sealant/colorant to aggregate is one gallon per ton. Again, more or less sealer/colorant may be used dependent on the desired color and coating desired.
- After sealing and coloring the silica sand by blending in the mixer, the granules are discharged onto a drying area. In about five minutes the colored/sealed aggregate is ready for transport to areas of application.
- It is noted that the colored/coated silica sand may also be used to decorate cement and masonry structures. Also, they may be used as ground cover. These applications are particularly true of those granules which fall outside the size limits of the turf filler.
Claims (4)
1-15. (canceled)
16. An artificial turf for an athletic or landscaped areas, comprising:
a backing having pile fibers extending upwardly therefrom; and
a filler of aggregate granules evenly spread on the backing, the filler consisting essentially of substantially round silicon sand particles (SiO2) of a restricted size profile that are coated and sealed with a coating so as to be non-porous and to repel water, wherein the coated and sealed silica sand particles resist mounding, resist compacting, and present no damaging sharp edges when incorporated with the turf, the coated and sealed particles having an angle of repose of less than about 30°, and wherein the pile fibers extend substantially above the infill material.
17. The turf filler of claim 16 wherein the filler is evenly applied over the base to a level of between about 0.25 to about 2.00 inches.
18. The artificial turf of claim 16 further comprising:
a colorant mixed in with the coating in an effective amount to achieve a desired color for the filler.
Priority Applications (1)
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US13/270,009 US20120027962A1 (en) | 2003-04-24 | 2011-10-10 | Special Turf Filler |
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US10/422,129 US6884509B2 (en) | 2003-04-24 | 2003-04-24 | Special turf filler comprising silica particles |
US10/811,737 US7144609B2 (en) | 2003-04-24 | 2004-03-29 | Artificial turf system |
US11/373,885 US8263203B2 (en) | 2003-04-24 | 2006-03-13 | Filler for artificial turf system |
US11/713,891 US7858148B2 (en) | 2003-04-24 | 2007-03-05 | Filler for artificial turf system |
US12/567,223 US8034429B2 (en) | 2003-04-24 | 2009-09-25 | Special turf filler |
US13/270,009 US20120027962A1 (en) | 2003-04-24 | 2011-10-10 | Special Turf Filler |
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US12/567,223 Continuation US8034429B2 (en) | 2003-04-24 | 2009-09-25 | Special turf filler |
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US20120027962A1 true US20120027962A1 (en) | 2012-02-02 |
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US12/567,223 Expired - Fee Related US8034429B2 (en) | 2003-04-24 | 2009-09-25 | Special turf filler |
US12/980,149 Abandoned US20110183086A1 (en) | 2003-04-24 | 2010-12-28 | Filler for artificial turf system |
US13/270,009 Abandoned US20120027962A1 (en) | 2003-04-24 | 2011-10-10 | Special Turf Filler |
US14/521,979 Abandoned US20150044395A1 (en) | 2003-04-24 | 2014-10-23 | Filler for artificial turf system |
US15/227,517 Expired - Lifetime US9845577B2 (en) | 2003-04-24 | 2016-08-03 | Filler for artificial turf system |
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US11/713,891 Expired - Lifetime US7858148B2 (en) | 2003-04-24 | 2007-03-05 | Filler for artificial turf system |
US12/567,223 Expired - Fee Related US8034429B2 (en) | 2003-04-24 | 2009-09-25 | Special turf filler |
US12/980,149 Abandoned US20110183086A1 (en) | 2003-04-24 | 2010-12-28 | Filler for artificial turf system |
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US14/521,979 Abandoned US20150044395A1 (en) | 2003-04-24 | 2014-10-23 | Filler for artificial turf system |
US15/227,517 Expired - Lifetime US9845577B2 (en) | 2003-04-24 | 2016-08-03 | Filler for artificial turf system |
Country Status (3)
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US (6) | US7858148B2 (en) |
EP (1) | EP1967651A1 (en) |
DE (1) | DE202007019078U1 (en) |
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Cited By (7)
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US20150044395A1 (en) * | 2003-04-24 | 2015-02-12 | Usgreentech, L.L.C. | Filler for artificial turf system |
US8795834B2 (en) | 2009-02-09 | 2014-08-05 | Sapturf, Llc | Synthetic turf having cooling layer |
US20150308056A1 (en) * | 2014-04-25 | 2015-10-29 | Profile Products Llc | Artificial turf field system |
US10066345B2 (en) * | 2014-04-25 | 2018-09-04 | Profile Products Llc | Artificial turf field system |
US11236471B2 (en) | 2014-04-25 | 2022-02-01 | Profile Products Llc | Artificial turf field system |
US10844553B2 (en) | 2015-05-28 | 2020-11-24 | Ten Cate Thiolon B.V. | Artificial turf system |
WO2021194799A1 (en) * | 2020-03-26 | 2021-09-30 | Celanese International Corporation | Infill for an artificial turf system |
Also Published As
Publication number | Publication date |
---|---|
US8034429B2 (en) | 2011-10-11 |
DE202007019078U1 (en) | 2010-05-20 |
US7858148B2 (en) | 2010-12-28 |
US20100015448A1 (en) | 2010-01-21 |
US20150044395A1 (en) | 2015-02-12 |
US20110183086A1 (en) | 2011-07-28 |
US9845577B2 (en) | 2017-12-19 |
US20070160800A1 (en) | 2007-07-12 |
EP1967651A1 (en) | 2008-09-10 |
US20160362850A1 (en) | 2016-12-15 |
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