# US 2010/0166984 A1 · Method for producing synthetic turfs > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0166984 A1 - Document ID: US20100166984A1 - Status: Published application - Kind: A1 - Application number: 12/091,348 - Filed: 2007-04-12 - Published: 2010-07-01 - Earliest claimed: 2007-04-12 - Inventors: Roberto Nusca - Web page: https://patentgrep.com/patent/US20100166984A1 ## CPC - E01C 13/08: Surfaces simulating grass {; Grass-grown sports grounds (grass-like surfaces for skiing E01C13/12)} - B29B 9/12: characterised by structure or composition - B32B 9/02: comprising animal or vegetable substances {, e.g. cork, bamboo, starch} - Y10T 428/23921: With particles - E01C: CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR (forming roads or like surfaces by compacting or grading snow or ice E01H) - B29B: PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS - B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Method for making a synthetic turf comprising laying a turf (1) consisting of a mat (2) on which a plurality of blades (3, 3a, 3b, 3c) of synthetic material is woven. An infill material (18) is obtained using the granular and fibrous part (17) of a loose product based on ground coconut, alone or with addition of other material such as rubber in granules or sand or other loose vegetable material such as cork. The raw material based on coconut, having a heterogeneous granulometry set between about 500 micron and several mm, is obtained loading a loose product based on ground coconut by a hopper on a conveyor belt for being fed in a sieve, for example a rotating screen that separates the powder part from the granular and fibrous part. In particular, the powder part of the raw material, is gathered on a conveyor belt and from here sent to a storage reservoir. The granular and fibrous part of the raw material, which represents the main product of the process, is, instead, sent by a conveyor belt to a storage, reservoir from where it is taken for the process to provide infill material for a synthetic turf. ## Claims ### Claim 1 A synthetic turf comprising: a turf comprising a mat, or turf primary layer, on which a plurality of blades of synthetic material are woven so that blades are formed that protrude from one side of the mat creating a turf; an infill material arranged between said blades, said infill material comprising a measured amount of loose product obtained from raw material based on ground coconut; characterised in that said loose product comprises substantially the sole granular and fibrous part of the raw material based on ground coconut, said granular and fibrous part being obtained causing said raw material based on ground coconut to undergo a step of separation of said granular and fibrous part from a powder part, and said granular and fibrous part contained in said loose product is obtained by sieving said raw material based on ground coconut, said granular and fibrous part having a granulometry larger than 500 micron (μm) for 90% by weight. ### Claim 2 (canceled) ### Claim 3 (depends on 1) Synthetic turf, according to claim 1, wherein said granular and fibrous part has the following granulometry: between 20% and 40% by weight set between 0.8 mm and 1.25 mm; between 15% and 35% by weight set between 1.25 mm and 1.60 mm; between 50% and 70% by weight larger than 1.6 mm. ### Claim 4 (depends on 1) Synthetic turf, according to claim 1, wherein said infill material comprises, furthermore, a further material selected from the group comprised of: selected sand, preferably ventilated sand having controlled granulometry, in particular set between 0.4 and 1.25 mm; a bulk of the raw material of natural vegetable origin, in particular, cork, preferably with granulometry set between 1.0 and 2.0 mm; a synthetic resilient loose material in elastomeric granules, in particular with granulometry set between 0.8 and 2.5 mm and preferably between 1.0 and 2.0 mm. ### Claim 5 (depends on 4) Synthetic turf, according to claim 4 wherein said infill material has a content in said granular and fibrous part of said loose ground product based on coconut set between 20% and 90% in volume, preferably between 30 and 80%. ### Claim 6 (depends on 4) Synthetic turf, according to claim 4, wherein said resilient synthetic loose material is at least one material selected from the group consisting of: rubber granules of first use; and rubber granules of recycled use. ### Claim 7 (depends on 1) Synthetic turf, according to claim 1, wherein said woven blades of synthetic material comprise: a first group of blades with longer extension, in order to protrude from the infill material, a second group of blades with shorter extension, in order to result in the infill material without protruding from it. ### Claim 8 (depends on 1) Synthetic turf, according to claim 1, wherein on said infill material a measured amount of a surfactant is added, said surfactant being adapted to assist the water to percolate through the synthetic turf. ### Claim 9 Method for making a synthetic turf comprising the steps of: providing a mat, or turf primary layer, on which a plurality of blades of synthetic material are woven so that blades are created that protrude from one side of the mat creating a turf; laying down an infill material among said blades, said infill material comprising a measured amount of loose product obtained from raw material based on ground coconut; characterised in that said loose product comprises substantially the sole granular and fibrous part of the raw material based on ground coconut, said granular and fibrous part being obtained causing said raw material based on ground coconut to undergo a step of separation of said granular and fibrous part from a powder part. ### Claim 10 (depends on 9) Method, according to claim 9, wherein said granular and fibrous part contained in said loose product is obtained by sieving said raw material based on ground coconut, said granular and fibrous part having a granulometry larger than 500 micron (μm) for 90% by weight. ### Claim 11 (depends on 1) Method for making an infill material for a synthetic turf, as defined in claim 1, comprising the steps of: feeding to separating means a raw material based on ground coconut comprising a granular and fibrous part and a powder part separating by said separating means the granular and fibrous part from the powder part of the ground raw material. ### Claim 12 (depends on 11) Method, according to claim 11, wherein said raw material based on ground coconut is obtained by milling a raw material based on coconut through grinding means obtaining said loose product comprising a granular and fibrous part and a powder part. ### Claim 13 (depends on 11) Method, according to claim 11, wherein said separation of said granular and fibrous part from a powder part is made through sieving means selected from the group comprised of: a mechanical sieve, in particular, a rotating screen, an electromagnetic sieve. ### Claim 14 (depends on 11) Method, according to claim 11, wherein said raw material based on coconut is ground through means for grinding in order to obtain said ground raw material. ### Claim 15 (depends on 11) Method, according to claim 11, wherein said loose product is conveyed towards said separation step of said granular and fibrous part from a powder part through feeding means comprising a loading hopper and a conveyor belt.