Abstract: The invention relates to a method for constructing the tread of a tyre, including arranging a plurality of layers of uncured rubber with a layer thickness per layer of between 30 and 500 ?m on a base; removing material from the layers for the purpose of arranging a predetermined pattern; and at least partially separately curing each layer. The invention also relates to a device, comprising a preferably cylindrical base and a control configured to perform this method on a base, and to an uncured rubber strip suitable for use in the method.

Abstract: The invention relates to a layer for reducing fluid resistance between an object and a fluid that are moving with a relative mutual speed, said layer comprising a substantially planar surface (12), said surface (12) comprising a pattern of outwardly extending elements (2), said elements (2) having an outer surface with a certain height with respect to the surface of the layer, said certain height increasing in a first direction in the plane of the layer, wherein the surface of the layer further comprises a plurality of recesses extending between the elements in a second direction in the plane of the layer, which recesses have a certain depth with respect to the surface of the layer.

Abstract: The present invention relates to a layer for reducing the friction resistance of a fluid relative to an object and for improving the contact of a boundary layer of the fluid flowing past, and thereby increasing the lift, comprising a wave-like approach flow surface repeating in a first direction which comprises means for transporting fluid from the boundary layer of the fluid flowing past to cavities in the wave-like approach flow surface. The present invention further relates to a method for manufacturing such a layer.

Abstract: The present invention relates to a layer for reducing the friction resistance of a fluid relative to an object and for improving the contact of a boundary layer of the fluid flowing past, and thereby increasing the lift, comprising a wave-like approach flow surface repeating in a first direction which comprises means for transporting fluid from the boundary layer of the fluid flowing past to cavities in the wave-like approach flow surface. The present invention further relates to a method for manufacturing such a layer.

Abstract: The disclosure relates to a layer (1) for reducing air resistance of a forward-moving object, which layer comprises a pattern of surfaces (2) rising in a first direction R, and -channels (3) running between the surfaces in a second direction at an angle to the first direction. A flow is brought about on a micro-scale in the channels which damps the occurrence of turbulence in the main flow over the surface, thereby reducing air resistance.

Abstract: A cold flow unit for metal wire is disclosed having at least three successive rollers, wherein the metal wire is trained over a part of the roller periphery such that at the transition of the metal wire from one roller to the subsequent roller the transition distance between the points of contact is less than 5 times the metal wire diameter. A device is disclosed for processing metal wire, having a roller cassette and subsequent thereto at least one such cold flow unit, or having at least two successive such cold flow units.