Method for manufacturing an artificial turf system and such a system

Patent metadata

Field	Value
Publication number	US-11926971-B2
Application number	US-201816767980-A
Country	US
Kind code	B2
Filing date	Dec 7, 2018
Priority date	Dec 7, 2017
Publication date	Mar 12, 2024
Grant date	Mar 12, 2024

Abstract

A method for manufacturing an artificial turf system provides for collecting infill from an existing artificial turf, wherein the collected infill comprises collected rubber granulates, mixing the collected rubber granulates and a binding agent for generating an elastic binding composition, applying the elastic binding composition over a base layer or over an optional existing artificial turf on top of the base layer, and applying a new artificial turf over the elastic binding composition, and the artificial turf system generated therein.

First claim

The invention claimed is:

1. A method for manufacturing an artificial turf system, comprising:
(a) collecting infill from an existing artificial turf, wherein the collected infill comprises collected rubber granulates;
(b) mixing the collected rubber granulates and a binding agent for generating a liquid elastic binding composition;
(c) pouring the liquid elastic binding composition over the existing artificial turf or directly on a stable platform, wherein the stable platform is soil, cement, or a base layer of the existing artificial turf; and
(d) applying a new artificial turf over the liquid elastic binding composition, wherein
the elastic binding composition solidifies into an elastic layer.

2. The method of claim 1 , wherein said collected rubber granulates are spherically-shaped having diameters of 0.5-2.5 mm.

3. The method of claim 1 , wherein the mixing further comprises mixing the collected rubber granulates, the binding agent, and sand for generating the elastic binding composition.

4. The method of claim 1 , further comprising:
disintegrating the existing artificial turf for generating fragments of the fibers of the removed artificial turf; and
wherein the mixing further comprises mixing the collected rubber granulates, the binding agent and the fragments, for generating the elastic binding composition.

5. The method of claim 1 , wherein the collected rubber granulates comprise one of styrene butadiene rubber (SBR) granulates and sulphur-cured ethylene propylene diene monomer rubber (sulphur-cured EPDM) granulates or rubber-coated granulates manufactured from natural fibers, in particular plant fibers such as burlap fibers, jute fibers, cotton fibers, wool fibers, hemp fibers, polyester fibers, natural fibers, flax fibers, kenaf fibers, nettle fibers, sisal fibers, cocos fibers, and combinations thereof.

6. The method of claim 5 , wherein the collection of the infill is performed by a machine configured for rolling up the existing artificial turf.

7. The method of claim 1 , further comprising removing the existing artificial turf for allowing the application of the elastic binding composition on the base layer.

8. The method of claim 1 , wherein the collection of the infill is performed by a machine configured for aspirating or mechanically collecting the infill.

9. The method of claim 1 , wherein a pile height of the new artificial turf is at least 5% lower than the pile height of the existing artificial turf.

10. The method of claim 1 , wherein a height of the backing of the new artificial turf is at least 5% lower than the height of the backing of the existing artificial turf.

11. The method of claim 1 , wherein a height of the infill of the new artificial turf, if any, is at least 5% lower than the height of the infill of the existing artificial turf.

12. The method of claim 1 , wherein said generated elastic binding composition has a hardening time, and wherein applying the new artificial turf over the elastic binding composition further comprises applying the new artificial turf over the elastic binding composition before expiration of the hardening time.

13. The method of claim 1 , wherein the new artificial turf comprises a plurality of fibers embedded in a carrier mesh having a first side and a second side, wherein each fiber of the plurality of fibers comprises a first part exposed to said first side of said carrier mesh and a second part exposed to said second side of said carrier mesh, and wherein said first side is adjacent to said elastic binding composition.

14. The method of claim 13 , wherein said first part of said each fiber is embedded in a polyurethane- or latex backing for mechanically fixing said first part of said each fiber to said backing.

15. The method of claim 1 , wherein said generated elastic binding composition has a hardening time, and wherein the method further comprises forming perforations in the new artificial turf and the elastic binding composition after expiration of the hardening time.

16. A machine, comprising:
an intake system configured to collect infill from an existing artificial turf;
a mixing system including a container, the mixing system configured to mix the collected infill and a binding agent in the container for generating a liquid elastic binding composition; and
an application system configured to pour the liquid elastic binding composition over said or another existing artificial turf or directly on a stable platform for preparing said existing artificial turf or said stable platform to receive a new artificial turf, wherein the stable platform is soil, cement, or a base layer of the existing artificial turf.

Assignees

• Apt Advanced Polymer Tech Corp
• Polytex Sportbelage Produktions Gmbh
• Polytex Sportbelaege Produktions Gmbh

Inventors

• Brown Kris

Classifications

• E01C13/083 Primary

  Construction of grass-grown sports grounds; Drainage, irrigation or heating arrangements therefor · CPC title

• E01C13/08 Primary

  Surfaces simulating grass {; Grass-grown sports grounds (grass-like surfaces for skiing E01C13/12)} · CPC title

• E01C13/02

  Foundations, e.g. with drainage or heating arrangements {(E01C13/003, E01C13/083, E01C13/10 take precedence; drainage of soil E02B11/00)} · CPC title

• E01C23/065

  Recycling in place or on the road, i.e. hot or cold reprocessing of paving in situ or on the traffic surface, with or without adding virgin material or lifting of salvaged material; Repairs or resurfacing involving at least partial reprocessing of the existing paving (in situ mixing of hydraulic cement concrete E01C19/025; apparatus for in-plant recycling E01C19/1004, E01C19/1036) · CPC title

• Y02W30/62

  Plastics recycling; Rubber recycling · CPC title