EP0185645A2 - Spielfeld aus Kunstrasen, das schnell entwässert werden kann - Google Patents

Spielfeld aus Kunstrasen, das schnell entwässert werden kann Download PDF

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Publication number
EP0185645A2
EP0185645A2 EP85870186A EP85870186A EP0185645A2 EP 0185645 A2 EP0185645 A2 EP 0185645A2 EP 85870186 A EP85870186 A EP 85870186A EP 85870186 A EP85870186 A EP 85870186A EP 0185645 A2 EP0185645 A2 EP 0185645A2
Authority
EP
European Patent Office
Prior art keywords
artificial turf
water
pad
laminate
playing field
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.)
Withdrawn
Application number
EP85870186A
Other languages
English (en)
French (fr)
Other versions
EP0185645A3 (de
Inventor
Kearney Dale Arrant
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Monsanto Co
Original Assignee
Monsanto Co
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 Monsanto Co filed Critical Monsanto Co
Publication of EP0185645A2 publication Critical patent/EP0185645A2/de
Publication of EP0185645A3 publication Critical patent/EP0185645A3/de
Withdrawn legal-status Critical Current

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Classifications

    • 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

Definitions

  • This invention pertains to a rapid draining playing field of artificial turf.
  • U.S. Patent 2,837,984 discloses a quick drying tennis court comprising layers of granular limestone over a clay base.
  • U.S. Patent 1,763,782 discloses a playing field of fibrous mats inserted in a drained cement basin.
  • U.S. Patent 1,906,494 discloses a playing surface comprising a layer of felt, a layer of pervious concrete and a bedding of course stone or broken stone.
  • Grass-like artificial turf systems have been proposed as an alternative to high maintenance surfaces such as golf putting greens which, although not necessarily flat, have been required to be highly permeable. See, for instance, U.S. Patents 2,515,847; 3,740,303; and 4,007,307; and Canadian Patent 886,152 which disclose artificial turf over permeable layers of sand, gravel, stone, rubber, plastic chips and the like. While such playing fields appear to provide some degree of permeability, they do not appear to have a base with sufficient stability to maintain a smooth playing surface even with only occasional traffic of maintenance vehicles. Accordingly, in recent years flat playing fields have been designed with both advantageous permeability and a strong, stable base by overlying artificial turf on a base of permeable concrete.
  • Permeable concrete bases were proposed as early as 1930 in U.S. Patent 1,906,494 which relates to playing surfaces comprising a layer of felt, a layer of pervious concrete and a bedding of course stone or broken stone.
  • Permeable asphaltic concrete has also been utilized as a base for athletic fields of artificial turf. See, for instance, U.S. Patent 4,515,839.
  • sloped surfaces of about a 1 to 2 percent grade have been provided to assist rain water runoff from playing fields which may be utilized for such sports as American football and association football (soccer). Sloped playing fields may be provided with interceptors as disclosed in U.S. Patent 3,611,729 which discloses vertical slots extending through the top layer of a natural turf field and in U.S. Patent 3,625,011 which discloses covered trenches for installation in an artificial turf field.
  • fields of artificial turf comprise an impervious layer requiring slopes, for instance of about a 1 to 2 percent grade on American football fields to provide water runoff.
  • the impervious layer of artificial turf has been provided because the turf itself comprises artificial blades of grass tufted into a backing which is covered with an impervious layer of polymer to assist in retaining the tufts of artificial turf in the backing.
  • the impervious layer has been provided because a pervious layer of artificial turf was glued to a polymeric shock-absorbing pad and/or such polymeric shock-absorbing pad was glued to the sloped subbase.
  • center portions of such sloped fields for instance near the crowned center, generally stay somewhat dry.
  • water level builds up toward the sidelines with water flow often rising over the tops of the blades of artificial turf creating an undesirable level of water especially near the sidelines.
  • This invention provides an artificial turf playing field comprising a laminate of an upper layer of water permeable artificial turf adhered to a lower layer of a perforated, closed-cell, polymeric foam, shock-absorbing pad having a substantially flat lower surface.
  • the pad is loose laid on a sloped, non-permeable base to form an interface therebetween.
  • the laminate of artificial turf and shock-absorbing pad has a specific gravity less than water whereby rain water falling on a playing field can permeate the laminate causing the laminate to float on a layer of water flowing in the interface.
  • the figure schematically illustrates an aspect of this invention where a laminate of artificial turf and a polymeric pad is loose laid over a sloped non-permeable base to provide an interface for water flow under the laminate to a drain at the margin of the playing field.
  • FIG. 1 which illustrates one embodiment of the invention, there is shown a laminate 1 of an upper layer of water permeable artificial turf 2 adhered to a lower layer of a closed-celled, polymeric foam, shock-absorbing pad 3.
  • the pad has a plurality of perforations 4 and a substantially flat lower surface.
  • the laminate is loose laid on a sloped, non-permeable subbase 5 forming an interface 6 therebetween.
  • Rain water falling on the playing field can permeate the layer of artificial turf 2 and flow through the pad through the perforations 4 to the interface 6.
  • the laminate has a specific gravity less than water allowing the laminate to float on water flowing in the interface 6 along the surface of the sloped, non-permeable base to a drain 9 which can, for instance, comprise a trench filled with an aggregate 10.
  • a perforated conduit 11 can serve to remove water accumulated in the trench.
  • the margin of the playing field can be secured in any desirable way for instance by nailing the laminate to a board 7 affixed to a concrete anchor 8.
  • portions of the artificial turf playing field will float on a layer of water running off the sloped subbase, the playing field will remain stable because the playing field is anchored at its margins and because the center of the playing field at the crown of the sloped surfaces will not accumulate sufficient water to float the field at the center.
  • a slope of as little as about one percent is sufficient to provide rapid drainage of water through the interface between the artificial turf/pad laminate and the non-permeable base. It is critical that the laminate of the layer of permeable artificial turf and closed-cell, polymeric foam, shock-absorbing pad have a specific gravity of less than water in order for the laminate to float on water draining from the field.
  • the polymeric pad be closed cell to avoid absorption of water into the pad which would increase the bulk density of the laminate such that flotation will not occur.
  • the pad will have a thickness greater than the head of water required to float the laminate so that the water level at the floating pad is below the level of artificial turf.
  • the permeable artificial turf will comprise a knitted artificial turf which is inherently water permeable.
  • knitted artificial turf comprises nylon blades of artificial turf knitted onto a polyester backing the artificial turf may tend to elongate or shrink depending on ambient conditions. Accordingly it is desirable that such artificial turf be adhered to the polymeric pad.
  • a polymeric pad used both in the playing field of this invention comprises a polymeric foam of an interpolymer of polyvinyl chloride and nitrile rubber having closed cells.
  • Such pads can have a thickness ranging from about 1/4 to 1 inch (6.3 - 25.4 mm).
  • the pad should have a plurality of perforations.
  • Useful perforations can have diameters as small as 1/8 inch (3 mm) or as large as 1/2 inch (12.7 mm) or larger.
  • the perforations can be spaced as close as 2 inches (5 cm) or less or as far apart as 6 to 8 inches (15-20 cm) or more.
  • a polymeric pad that was demonstrated to be useful had a thickness of about 5/8 inch (16 mm) with 3/8 inch (9.5 mm) perforations on 3 inch (7.6 cm) centers. Such pad had a specific gravity of about 0.12, and correspondingly had a basis weight of 0.39 lb/ft 2 (19 Pa).
  • Glued to the pad was a layer of artificial turf comprising nylon blades knitted to a polyester backing.
  • the artificial turf had a basis weight of 0.48 lb/ft 2 (23 Pa).
  • the glue was applied at a basis weight of about 0.1 lb/ft 2 (5 Pa):
  • the combined basis weight of the laminate was 0.97 lb/ft 2 (47 Pa).

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Prostheses (AREA)
EP85870186A 1984-12-17 1985-12-16 Spielfeld aus Kunstrasen, das schnell entwässert werden kann Withdrawn EP0185645A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US68211684A 1984-12-17 1984-12-17
US682116 1984-12-17

Publications (2)

Publication Number Publication Date
EP0185645A2 true EP0185645A2 (de) 1986-06-25
EP0185645A3 EP0185645A3 (de) 1987-09-02

Family

ID=24738276

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85870186A Withdrawn EP0185645A3 (de) 1984-12-17 1985-12-16 Spielfeld aus Kunstrasen, das schnell entwässert werden kann

Country Status (7)

Country Link
EP (1) EP0185645A3 (de)
JP (1) JPS61146903A (de)
CN (1) CN85109207A (de)
AU (1) AU5126885A (de)
FI (1) FI854975A (de)
NO (1) NO855068L (de)
NZ (1) NZ214569A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0452529A1 (de) * 1988-12-05 1991-10-23 Astroturf Industries, Inc. Zusammensetzung von wasserdurchlässigen Kunstrasen
US6877932B2 (en) * 2001-07-13 2005-04-12 Fieldturf (Ip) Inc. Drainage system and method for artificial grass using spacing grid
US7722288B2 (en) 2006-10-24 2010-05-25 Fieldturf Tarkett Inc. Method of installing a synthetic grass system
US8225566B2 (en) 2006-10-09 2012-07-24 Fieldturf Tarkett Inc. Tile for a synthetic grass system
WO2013093471A1 (en) * 2011-12-23 2013-06-27 Playsmart International Limited Surface
US8545964B2 (en) 2010-09-23 2013-10-01 Fred Svirklys Roll-form shock and drainage pad for outdoor field installations
WO2020000081A1 (en) * 2018-06-29 2020-01-02 Fieldturf, Inc. Artificial turf field apparatus and methods

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989001076A1 (en) * 1987-07-23 1989-02-09 Noel Peter John Mogford Turf surfaces
AU628300B2 (en) * 1987-11-05 1992-09-17 Kingsford Ross Heylen Synthetic surface playing field
JP2756644B2 (ja) * 1994-05-26 1998-05-25 ソーコー株式会社 人工芝競技場の施工方法
KR100578039B1 (ko) * 2003-09-17 2006-05-12 (주)앙투카 운동장용 기층재
CN101440596B (zh) * 2007-11-23 2011-07-27 李謦宇 组合式人工运动草垫及加工方法
KR101018841B1 (ko) * 2009-06-18 2011-03-04 (유)건용건설 폐유리를 활용한 친환경성 인조잔디 구조체
CN109024156A (zh) * 2018-08-15 2018-12-18 广州市绣林康体设备有限公司 一种快速排水型人造草坪运动场及施工方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2523176A1 (de) * 1974-05-29 1975-12-11 Chevron Res Unterlegter kunstrasen oder teppichaehnliches material
FR2503752A1 (fr) * 1981-04-13 1982-10-15 Dany Alain Procede pour l'amenagement d'un terrain stabilise sans couche profonde de drainage et terrain ainsi obtenu
GB2103494A (en) * 1981-08-18 1983-02-23 John Innes Malcolm Conditioning particulate ground surfaces such as sporting areas
EP0120207A2 (de) * 1983-03-24 1984-10-03 J.F. Adolff AG Unterlegmatte für einen Bodenbelag, vorzugsweise für einen wasserdurchlässigen Kunstrasen, sowie Verfahren zu ihrer Herstellung
DE3414468A1 (de) * 1984-02-23 1985-08-29 Paul 8011 Putzbrunn Müller Spiel und sporteinrichtung zur anordnung auf wasserflaechen
DE3421382A1 (de) * 1984-06-08 1985-12-12 Paul 8011 Putzbrunn Müller Spiel und sporteinrichtung zur anordnung auf wasserflaechen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2523176A1 (de) * 1974-05-29 1975-12-11 Chevron Res Unterlegter kunstrasen oder teppichaehnliches material
FR2503752A1 (fr) * 1981-04-13 1982-10-15 Dany Alain Procede pour l'amenagement d'un terrain stabilise sans couche profonde de drainage et terrain ainsi obtenu
GB2103494A (en) * 1981-08-18 1983-02-23 John Innes Malcolm Conditioning particulate ground surfaces such as sporting areas
EP0120207A2 (de) * 1983-03-24 1984-10-03 J.F. Adolff AG Unterlegmatte für einen Bodenbelag, vorzugsweise für einen wasserdurchlässigen Kunstrasen, sowie Verfahren zu ihrer Herstellung
DE3414468A1 (de) * 1984-02-23 1985-08-29 Paul 8011 Putzbrunn Müller Spiel und sporteinrichtung zur anordnung auf wasserflaechen
DE3421382A1 (de) * 1984-06-08 1985-12-12 Paul 8011 Putzbrunn Müller Spiel und sporteinrichtung zur anordnung auf wasserflaechen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0452529A1 (de) * 1988-12-05 1991-10-23 Astroturf Industries, Inc. Zusammensetzung von wasserdurchlässigen Kunstrasen
US6877932B2 (en) * 2001-07-13 2005-04-12 Fieldturf (Ip) Inc. Drainage system and method for artificial grass using spacing grid
US8225566B2 (en) 2006-10-09 2012-07-24 Fieldturf Tarkett Inc. Tile for a synthetic grass system
US7722288B2 (en) 2006-10-24 2010-05-25 Fieldturf Tarkett Inc. Method of installing a synthetic grass system
US8545964B2 (en) 2010-09-23 2013-10-01 Fred Svirklys Roll-form shock and drainage pad for outdoor field installations
WO2013093471A1 (en) * 2011-12-23 2013-06-27 Playsmart International Limited Surface
WO2020000081A1 (en) * 2018-06-29 2020-01-02 Fieldturf, Inc. Artificial turf field apparatus and methods

Also Published As

Publication number Publication date
NZ214569A (en) 1987-08-31
CN85109207A (zh) 1986-07-30
NO855068L (no) 1986-06-18
FI854975A (fi) 1986-06-18
JPS61146903A (ja) 1986-07-04
EP0185645A3 (de) 1987-09-02
AU5126885A (en) 1986-06-26
FI854975A0 (fi) 1985-12-16

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