EP1900874A2 - Panneau drainant avec gazon synthétique - Google Patents

Panneau drainant avec gazon synthétique Download PDF

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Publication number
EP1900874A2
EP1900874A2 EP06126102A EP06126102A EP1900874A2 EP 1900874 A2 EP1900874 A2 EP 1900874A2 EP 06126102 A EP06126102 A EP 06126102A EP 06126102 A EP06126102 A EP 06126102A EP 1900874 A2 EP1900874 A2 EP 1900874A2
Authority
EP
European Patent Office
Prior art keywords
grass
panel
blanket
drainable
laden
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Withdrawn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
EP06126102A
Other languages
German (de)
English (en)
Other versions
EP1900874A3 (fr
Inventor
Luciano Locatelli
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.)
Preformati B M C Srl
Original Assignee
Preformati B M C Srl
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 Preformati B M C Srl filed Critical Preformati B M C Srl
Publication of EP1900874A2 publication Critical patent/EP1900874A2/fr
Publication of EP1900874A3 publication Critical patent/EP1900874A3/fr
Withdrawn legal-status Critical Current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

  • the present invention relates to a drainable panel with synthetic grass in accordance with the introduction to the main claim, and a process for its production.
  • grass-laden elements comprising blades of synthetic grass sewn onto a fabric support.
  • Said grass-laden elements present an upper surface from which the synthetic grass projects, and a lower surface on which latex is applied to permanently fix the roots of these grass blades to the fabric.
  • the grass-laden elements can be made drainable by a plurality of small holes provided therein.
  • a second problem is that such grass-laden elements tend to lift from the ground when subjected to the stresses of players running along the field or suddenly stopping.
  • sand and rubber granules or cloggings of various materials are spread between the synthetic grass blades.
  • the purpose of the sand is to weigh down the grass-laden element and prevent it from easily lifting during use.
  • the purpose of the rubber granules is to soften the field of play.
  • a further problem is that with continued use of the playing field, the rubber granules are gradually lost from the field and new rubber granules have therefore to be periodically added.
  • An object of the present invention is therefore to provide a drainable panel with synthetic grass by which the stated drawbacks are overcome, a particular object being to provide a drainable panel with synthetic grass which is sufficiently soft to be usable for play and for the sport which is to be practised on it, without adding rubber granules or cloggings of various materials.
  • a further object is to provide a drainable panel with synthetic grass which does not lift easily during use.
  • the drainable panel with synthetic grass comprises a grass-laden element 1 superposed on and joined to one of the two faces of an elastically deformable blanket 3.
  • the grass-laden element 1 comprises a typically fabric support onto which blades of synthetic grass are sewn. This has an upper surface from which synthetic grass 2 projects, and a lower surface opposite it.
  • At least the blanket 3 presents drainage holes 4 which traverse it transversally.
  • the grass-laden element 1 is water-permeable by nature and does therefore not require drainage holes.
  • the support on which the synthetic grass blades are fixed is perforated to enable these grass blades to pass through. This is sufficient to make the grass-laden element water-permeable. Its permeability may however also be determined by the fact that this support is made of a permeable fabric onto which the synthetic grass blades are sewn. The absence of latex is preferable as the latex is suspected of being carcinogenic. If however the lower surface of the grass-laden element is covered with latex or another material which makes the grass-laden element 1 impermeable to water, the grass-laden element 1 superposed on the blanket 3 must also comprise drainage holes 4.
  • the drainable panel with synthetic grass can advantageously comprise a reinforcement sheet (not shown for simplicity) joined to at least one of the two faces of the blanket 3.
  • This reinforcement sheet can therefore be interposed between the grass-laden element 1 and the blanket 3 or be glued to the blanket 3 alone, on its lower face shown in Figure 2.
  • This reinforcement sheet can preferably comprise glass or carbon fibres, or a particular non-woven fabric material formed from fibres which are interlaced but not woven, or rock wool, cotton, polyester or hemp. If the reinforcement sheet is impermeable to water, it must also comprise drainage holes corresponding to those present in the blanket 3 and possibly in the grass-laden element 1. If the reinforcement sheet is water-permeable, it does not require the presence of drainage holes. The purpose of this reinforcement sheet is to oppose thermal expansion which can cause the panel to deform and some parts of it to lift.
  • the blanket 3 of the drainable panel with synthetic grass can be made of different materials, including for example polystyrene, polyurethane, an expanded rubber known as EPDM, a closed-cell expanded polyethylene known commercially as EVA, polypropylene, high density polyethylene, hard or soft plastic, recycled or non-recycled rubber, cork, extruded polystyrene, rock wool, or compacted polystyrene beads.
  • EPDM expanded rubber
  • EVA polypropylene
  • high density polyethylene high density polyethylene
  • hard or soft plastic recycled or non-recycled rubber
  • cork cork
  • extruded polystyrene rock wool
  • compacted polystyrene beads compacted polystyrene beads.
  • a closed-cell expanded crosslinked polyethylene material in accordance with EP 1 247 632 can also be used, in which pieces of thermoplastic material are heated and pressed with cooled plates to obtain partial fusion with joining of the various pieces.
  • the thickness and the elasticity and deformability characteristics of the blanket 3 depend on the characteristics required for the overall panel.
  • the dimensions and the distances between the drainage holes 4 must be such as to allow good drainage of the rain water. At the same time the drainage holes must not be so dense or so large as to excessively weaken the panel or compromise the support action of the blanket towards the grass-laden element or to excessively thin out the synthetic grass surface. For this reason the drainage holes have a diameter or transverse dimension between 1 mm and 25 mm. Preferably the drainage holes have a transverse dimension between 2 mm and 4 mm. They are spaced apart such that a panel surface of 4 dm 2 (a square of 20 cm side) has a number of drainage holes between 1 and 10000, preferably between 10 and 600.
  • the presence of a plurality of through drainage holes 4 enables air to pass, to considerably reduce the deformation and lifting of parts of the panel, when its surface is subjected to even intense solar radiation.
  • the present patent also protects a production process for the drainable panel with synthetic grass ( Figure 4).
  • This process comprises the following steps:
  • the drainage holes 4 which traverse the blanket 3 may be formed after joining the blanket 3 to the grass-laden element 1.
  • grass-laden element 1 is impermeable to water, drainage holes are also formed in the grass-laden element 1.
  • the process for permanently joining the grass-laden element to the blanket can comprise gluing preferably with thermo-adhesive glue, or hot joining the plastic material to the interface by partial fusion.
  • the heating action exerted on the thermo-adhesive glue or provided for hot joining is indicated by the arrow 6 in Figure 4.
  • the surfaces to be glued together are superposed and pressed together by passing the grass-laden element 1 and the blanket 3 between a pair of counter-rotating parallel rollers with a suitable distance between axes.
  • the drainage holes 4 can be formed in various ways, for example with a known quilting machine or another machine.
  • the drainable panel with synthetic grass hence enables rain water to drain away and presents a softness determined by the type of blanket 3. Because of this, the presence of rubber granules on the panel grass surface can be reduced or eliminated.
  • the drainage holes which also enable air to pass, prevent panel deformation and lifting due to solar heating.
  • the drainable panel with synthetic grass comprises a reinforcement sheet with glass or carbon fibres joined to one of the faces of the blanket.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Road Paving Structures (AREA)
EP06126102A 2006-09-13 2006-12-14 Panneau drainant avec gazon synthétique Withdrawn EP1900874A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20061749 ITMI20061749A1 (it) 2006-09-13 2006-09-13 Pannello drenante con erba sintetica

Publications (2)

Publication Number Publication Date
EP1900874A2 true EP1900874A2 (fr) 2008-03-19
EP1900874A3 EP1900874A3 (fr) 2008-10-15

Family

ID=38819280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06126102A Withdrawn EP1900874A3 (fr) 2006-09-13 2006-12-14 Panneau drainant avec gazon synthétique

Country Status (2)

Country Link
EP (1) EP1900874A3 (fr)
IT (1) ITMI20061749A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2388375A1 (fr) * 2010-05-17 2011-11-23 Armacell Enterprise GmbH Système de drainage fournissant des propriétés d'amortissement
ITMI20132187A1 (it) * 2013-12-23 2015-06-24 A P E Technologies S R L Pannello per la realizzazione di un prato naturale rinforzato e metodo per la realizzazione di tale pannello
IT202000003790A1 (it) * 2020-02-24 2021-08-24 Sofisport S R L Sistema di tappeto erboso per uso sportivo o decorativo e metodo per la messa in posa di tale sistema
US12084817B2 (en) 2018-11-15 2024-09-10 Genus Industries, Inc. Coconut hard shell granular infill for synthetic sport fields

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4946719A (en) * 1988-12-05 1990-08-07 Astroturf Industries, Inc. Drainable artificial turf assembly
EP0390755A2 (fr) * 1989-03-31 1990-10-03 SAVAL S.r.l. Géotextile composite à plusieurs couches, ayant une faible déformabilité et une capacité élevée de filtration et de drainage
DE19521944A1 (de) * 1994-06-17 1995-12-21 Ph Kunststoff Recycling Gmbh & Künstlicher Golfplatzboden für ein Grün
US20050042394A1 (en) * 2003-08-20 2005-02-24 Sawyer Daniel C. Multi-layered sports playing field with a water draining, padding layer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4946719A (en) * 1988-12-05 1990-08-07 Astroturf Industries, Inc. Drainable artificial turf assembly
EP0390755A2 (fr) * 1989-03-31 1990-10-03 SAVAL S.r.l. Géotextile composite à plusieurs couches, ayant une faible déformabilité et une capacité élevée de filtration et de drainage
DE19521944A1 (de) * 1994-06-17 1995-12-21 Ph Kunststoff Recycling Gmbh & Künstlicher Golfplatzboden für ein Grün
US20050042394A1 (en) * 2003-08-20 2005-02-24 Sawyer Daniel C. Multi-layered sports playing field with a water draining, padding layer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2388375A1 (fr) * 2010-05-17 2011-11-23 Armacell Enterprise GmbH Système de drainage fournissant des propriétés d'amortissement
ITMI20132187A1 (it) * 2013-12-23 2015-06-24 A P E Technologies S R L Pannello per la realizzazione di un prato naturale rinforzato e metodo per la realizzazione di tale pannello
US12084817B2 (en) 2018-11-15 2024-09-10 Genus Industries, Inc. Coconut hard shell granular infill for synthetic sport fields
IT202000003790A1 (it) * 2020-02-24 2021-08-24 Sofisport S R L Sistema di tappeto erboso per uso sportivo o decorativo e metodo per la messa in posa di tale sistema
WO2021171172A1 (fr) * 2020-02-24 2021-09-02 Sofisport S.R.L. Système de gazon pour usage sportif ou décoratif et procédé de positionnement d'un tel système

Also Published As

Publication number Publication date
ITMI20061749A1 (it) 2008-03-14
EP1900874A3 (fr) 2008-10-15

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