Abstract: A method for manufacturing a compound construction element, in an extrusion process wherein a composite material is pressed through an extrusion die, which composite material includes a matrix of thermoplastic synthetic material including wood particles or other, cellulose containing particles in a content on the order of 50% by weight or more, wherein also one or more elongated additional elements are passed through the extrusion die, which additional elements are brought into tight engagement with the composite material, after which the compound element is shaped and preferably cooled in a die.

Abstract: Wall element for separating two areas situated on either side of a wall, wherein the wall element is made by extrusion from a composite material having a synthetic matrix and incorporated therein wood particles, such as wood fibers or other cellulose-containing particles, wherein the wall elements are panel-shaped and comprise a first main plate, a second main plate spaced therefrom and transverse plates for connecting both main plates to each other, wherein both main plates and the transverse plates define hollow spaces, wherein the wood particles comprise a high fraction of elongated wood particles, which elongated wood particles are predominantly oriented in the profile direction, wherein the wall element has first and second, opposite longitudinal edges extending in the profile direction, which longitudinal edges are provided with first and second coupling members, respectively, wherein the first coupling members define an accommodation recess space for a protrusion formed at a second longitudinal edge of

Abstract: A cover profile system for forming a walking surface, roof surface, wall surface or wall, which is formed from a plurality of flat, elongated hollow profile bodies, each comprising a first wall, a second wall, a first longitudinal edge and a second longitudinal edge, wherein the first longitudinal edge is provided with a first longitudinal strip having holes for attachment, wherein one of either longitudinal edges is provided with a second longitudinal strip, which at the side of the first strip that faces the first wall, extends over the first strip to at least the opposite longitudinal edge.