Abstract: The invention relates to a synthetic monofilament fiber for use in an artificial lawn, said synthetic fiber having a width greater than the thickness of the synthetic fiber and being provided with solid thickened parts at its free ends, and a central part between the thickened parts comprising a curved section and having a substantially uniform thickness, seen in transverse direction, the synthetic fiber having a thickness/width ratio such that the synthetic fiber can buckle locally upon being subjected to an external load. The invention further relates to an artificial lawn with a backing to which one or more synthetic fibers according to the invention are attached.

Abstract: A filter module comprising a plurality of essentially parallel tubular membranes, the tubular membranes comprising a porous tube wall that functions as a filtering membrane, wherein the module comprises a support structure for supporting the tubular membranes, the support structure comprising an open three-dimensional network of stable shape consisting of stiff wires or fibers, the support structure being shaped such that it comprises open parallel tubes or parts of tubes that envelope each of the tubular membranes at least partly over at least a part of its length, in such a way that a tube or part of a tube of the support structure supports at least one tubular membrane.

Abstract: The present invention relates to an artificial turf suitable for sports fields including a substrate to which first artificial grass fibers are attached and a granular infill, which is provided between the first artificial grass fibers and which is made of a recyclable synthetic material. The invention also relates to an improved granular infill for use in an artificial turf suitable for sports fields.

Abstract: The invention relates to a sport-technical layer for use in an artificial lawn system in particular intended for sports fields, which artificial lawn system is built up at least of a substrate to which artificial grass fibres are attached as well as the sport-technical layer extending under said substrate, which sport-technical layer comprises at least one damping sublayer made of a synthetic foam, which damping sublayer made of a synthetic foam is built up of an essentially rigid flat plate, which plate is provided with flatness-enhancing means. The invention further relates to an artificial lawn system provided with such a sport-technical layer. According to the invention, the sport-technical layer is to that end characterised in that said flatness-enhancing means comprise at least one first slot assembly of at least two closely spaced slots formed in a respective upper surface or bottom surface of the plate, which slots extend in a first direction of the plate.

Abstract: The invention relates to an artificial lawn, in particular for an artificial grass sports field comprising an artificial mat built up of a carrier to which artificial glass fibers are attached. The object of the invention is to provide a new type of artificial lawn, which in particular obviates the need to use an infill material, without this having an adverse effect on the playing characteristics of the sports field. According to the invention, the carrier is at least in part provided with at least one additional material component, which additional material component imposes a permanent volume increase on said part of the carrier under the influence of an external stimulus after being provided in the artificial mat.

Abstract: The invention relates to an artificial grass fiber in particular for use in an artificial mat for an artificial lawn, which artificial grass fiber is made of at least one synthetic material. The invention also relates to an artificial mat, in particular for use in an artificial grass sports field, which artificial mat is built up of a carrier to which at least artificial grass fibers according to the invention are attached. The object of the invention is therefore to provide an improved artificial grass fiber which on the one hand can be produced by means of the existing techniques and which on the other hand reduces the number of injuries on the field. According to the invention, the artificial grass fiber to that end furthermore comprises at least one additional material component, which additional material component imposes a permanent volume increase on the artificial grass fiber under the influence of an external stimulus after the artificial mat has been provided with the artificial grass fiber.

Abstract: The invention relates to a composite artificial grass fiber for use in an artificial lawn, in particular an artificial grass sports field, which artificial grass fiber is made up at least of several monofilament fibers. The invention further relates to an artificial lawn, in particular an artificial grass sports field built up of a substrate to which composite artificial grass fibers according to the invention are attached. The invention also relates to a method for manufacturing a composite artificial grass fiber according to the invention, in particular for an artificial lawn, which comprises the steps of manufacturing several monofilament fibers and forming said several monofilament fibers into a composite artificial grass fiber.

Abstract: The invention relates to a synthetic fibre of the monofilament type for use in an artificial lawn, which synthetic fibre has a width greater than the thickness of the synthetic fibre. The invention also relates to an artificial lawn consisting at least of a backing to which one or more synthetic fibres according to the invention are attached. The object of the present invention is to prevent a weak synthetic fibre as mentioned above which remains prone to splitting and fracture and to provide an improved synthetic fibre for use in an artificial lawn which is sufficiently rigid yet flexible as well and which has the capacity to straighten again so as to be able to take up the varying loads during play, and which is also sufficiently wear-resistant and sliding-friendly, so that the fibre will less tend to assume a flat orientation or split or fracture, and which furthermore does not increase the risk of injury or have an adverse effect on the playing characteristics.

Abstract: The invention relates to a substrate for sports and recreation fields, in particular artificial grass sports fields that contain granular infill material, which substrate comprises at least one component that can leach out upon contact with water and which further comprises a binder material for binding the leached-out component. The invention also relates to a backing and to an artificial lawn provided with such a substrate. The object of the invention is to provide an improved substrate for a sports/recreation field as described in the introduction, and in order to accomplish that object the binder material is provided on or in the substrate. This makes it possible in the case of saturation to simply collect and carry off the substrate with the binder material and the leached-out component that is bound thereto or held therein.

Abstract: The invention relates to a composite artificial grass fibre for use in an artificial lawn, in particular an artificial grass sports field, which artificial grass fibre is made up at least of several monofilament fibres. The invention further relates to an artificial lawn, in particular an artificial grass sports field built up of a substrate to which composite artificial grass fibres according to the invention are attached. The invention also relates to a method for manufacturing a composite artificial grass fibre according to the invention, in particular for an artificial lawn, which comprises the steps of manufacturing several monofilament fibres and forming said several monofilament fibres into a composite artificial grass fibre.

Abstract: The present invention relates to a method for producing a synthetic fiber for use in an artificial grass sports field, including the steps of supplying a layer of synthetic material; and obtaining the synthetic fiber from the layer of synthetic material, wherein the layer of synthetic material comprises at least two layers of different synthetic materials, using a co-extrusion process. The invention also relates to such a synthetic fiber and to an artificial lawn suitable for sports fields, including a substrate to which synthetic fibers according to the invention have been attached.

Abstract: The invention relates to an artificial lawn, in particular for an artificial grass sports field comprising an artificial mat built up of a carrier to which artificial glass fibres are attached. The object of the invention is to provide a new type of artificial lawn, which in particular obviates the need to use an infill material, without this having an adverse effect on the playing characteristics of the sports field. According to the invention, the carrier is at least in part provided with at least one additional material component, which additional material component imposes a permanent volume increase on said part of the carrier under the influence of an external stimulus after being provided in the artificial mat.

Abstract: The invention relates to an artificial grass fibre in particular for use in an artificial mat for an artificial lawn, which artificial grass fibre is made of at least one synthetic material. The invention also relates to an artificial mat, in particular for use in an artificial grass sports field, which artificial mat is built up of a carrier to which at least artificial grass fibres according to the invention are attached. The object of the invention is therefore to provide an improved artificial grass fibre which on the one hand can be produced by means of the existing techniques and which on the other hand reduces the number of injuries on the field. According to the invention, the artificial grass fibre to that end furthermore comprises at least one additional material component, which additional material component imposes a permanent volume increase on the artificial grass fibre under the influence of an external stimulus after the artificial mat has been provided with the artificial grass fibre.

Abstract: The invention relates to an artificial lawn, in particular an artificial grass sports field, comprising a substrate to which artificial grass fibres provided with additives are attached, which additives undergo a color change in response to an external stimulus. The object of the invention is to provide an artificial lawn as referred to in the introductory paragraph which is capable of displaying a range of colors in a simpler and more effective manner. According to the invention, the artificial grass fibres provided with an additive are attached to the substrate in the form of various groups of artificial grass fibres, each provided with a specific additive, wherein each specific additive of a group of artificial grass fibres undergoes a color change in response to a specific external stimulus.

Abstract: The present invention relates to an artificial turf suitable for sports fields including a substrate to which first artificial grass fibers are attached and a granular infill, which is provided between the first artificial grass fibers and which is made of a recyclable synthetic material. The invention also relates to an improved granular infill for use in an artificial turf suitable for sports fields.

Abstract: The invention relates to an artificial grass lawn suitable for sports fields, which artificial grass lawn consists of a base layer, on which first artificial grass fibres are disposed. In accordance with the invention, the artificial grass lawn is characterized in that said base layer comprises a material having damping properties, which is present thereon and/or therein. Thus the properties of a natural grass field are approximated very closely, and also the style of play on the sports field is positively affected. Furthermore, the artificial grass field thus obtained is substantially free of maintenance and of injury.

Abstract: The present invention relates to a device for measuring the static and/or dynamic friction coefficient of a surface, in particular a natural or artificial grass surface, which device comprises a housing placed on supports, which is to be positioned on the surface to be examined; a rotatable shaft, which is vertically disposed in said housing; a body connected to the end of said shaft that faces towards the surface, which body comprises a contact surface which can be brought into contact with the surface to be examined; as well as measuring means for measuring, during operation, the torque caused by the friction between the surface to be examined and the contact surface of the rotating body. The object of the present invention is to provide a device for measuring the static and/or dynamic friction coefficient of a surface which provides a more reliable and reproducible measuring result and which is furthermore user-friendly and easy to transport.

Abstract: The present invention relates to a method for determining the values of stiffness and dampening, in particular of surfaces for sports fields. The invention furthermore relates to a device for carrying out the aforesaid method. The object of the present invention is to provide a method and a device for determining the values of stiffness and dampening of an artificial grass lawn which provide a reliable measuring result in a quick and efficient manner, which device is furthermore user-friendly and easy to transport.

Abstract: The invention relates to an artificial grass lawn suitable for sports fields, which artificial grass lawn consists of a base layer, on which first artificial grass fibres are disposed. In accordance with the invention, the artificial grass lawn is characterized in that said base layer comprises a material having damping properties, which is present thereon and/or therein. Thus the properties of a natural grass field are approximated very closely, and also the style of play on the sports field is positively affected. Furthermore, the artificial grass field thus obtained is substantially free of maintenance and of injury.

Abstract: A device for measuring the static and/or dynamic friction coefficient of a surface, in particular a natural or artificial grass surface, in which the device includes a frame to which a first arm is pivotally connected with one side, which first arm is pivotally connected at its other side to a bar fitted with a body having a surface which can be placed into contact with the surface to be measured, wherein the bar is furthermore connected to an element for exerting thereon a torque which acts about the pivot point thereon, and wherein loading elements are furthermore present for exerting a force on the bar in the direction of the surface to be measured, wherein the bar is furthermore provided with an element for measuring forces occurring in the bar, which element is present at a point located between the pivot point with the first arm and the side which is capable of carrying said body.