Abstract: The invention relates to a process for manufacturing composite material which contains fiber based and polymer based material, wherein the manufacture includes a preliminary treatment process to form a raw stock mixture. According to the invention, the preliminary treatment process includes a hot-cold mixing device which comprises at least a heating stage, and that raw stock, which contains lignin-free material, and a coupling agent are fed to the mixing device to form the raw stock mixture, and adhesion between fiber based and polymer based substances of the raw stock is ameliorated by the coupling agent.

Abstract: The invention relates to a natural fiber plastic composite product comprising a first layer and a second layer, the first layer forming at least a part of the surface of the product. The first layer comprises thermoplastic polymer and cellulose based particles, and the second layer comprises thermoplastic polymer and impurities. The content of the impurities is greater in the second layer of the product than in the first layer of the product. In addition, the invention relates to a method for manufacturing a natural fiber plastic composite product, a use of a natural fiber plastic composite product, and an arrangement comprising a natural fiber plastic composite product.

Abstract: The invention relates to a wood composite material and to a method for making it. In accordance with the invention, the wood composite material is formed of adhesive laminate waste comprising adhesive material, glue and release material and having been arranged into chaff, the chaff being arranged into the wood composite material.

Abstract: The invention relates to a method and a device for producing chaff used in the production of a wood composite material. In accordance with the invention, adhesive laminate waste comprising adhesive material, glue and release material is arranged into chaff in multiple steps and the adhesive properties of the glue are killed.

Abstract: An L-profile shaped element is formed as a monolithic piece, and the L-profile shaped element includes a first and a second leg, wherein the legs are arranged to have substantially the same thicknesses, at least one edge of each leg is provided with joint parts functioning in the substantially same manner, and the element is turnable to a desired position. In addition, the invention relates to the use of the L-profile shaped element and to a method for installing L-profile shaped elements.

Abstract: The invention relates to a process for manufacturing composite material which contains fiber based and polymer based material, wherein the manufacture includes a preliminary treatment process to form a raw stock mixture. According to the invention, the preliminary treatment process includes a hot-cold mixing device which comprises at least a heating stage, and that raw stock, which contains lignin-free material, and a coupling agent are fed to the mixing device to form the raw stock mixture, and adhesion between fiber based and polymer based substances of the raw stock is ameliorated by the coupling agent.

Abstract: The invention relates to a method and an apparatus for controlling the quality in the manufacture of composite material which contains fiber based and polymer based material, wherein the manufacture includes a mixing process (1) to form agglomerates from a raw stock mixture. According to the invention, a combination of variables in the mixing process is observed, wherein the variables are selected from the group of moment, current consumption, time, sound, temperature and their combinations, and the mixing process as well as the quality of the agglomerates to be formed is controlled based on the acquired observations (6, 7).

Abstract: The invention relates to a process and apparatus for the homogenization of feed stock. According to the invention, solid stock material is mixed in at least two successive homogenization steps (1), wherein each homogenization step comprises at least two adjacent tanks (2), and the stock material is fed into adjacent tanks of a first homogenization step (IA), at least two stock flows are conducted out form each tank of each homogenization step, and at least one stock flow is conducted from each homogenization step into at least one tank (2) of the following homogenization step.

Abstract: A method for forming a wood composite product by extrusion with a manufacturing apparatus. The temperature profile prevailing in the manufacturing apparatus is adjusted in such a way that the surface of the wood composite product to be formed becomes rough. A wood composite product and an apparatus for manufacturing a wood composite product.

Abstract: The invention relates to a method and a device for producing chaff used in the production of a wood composite material. In accordance with the invention, adhesive laminate waste comprising adhesive material, glue and release material is arranged into chaff in multiple steps and the adhesive properties of the glue are killed.

Abstract: The invention relates to a wood composite material and to a method for making it. In accordance with the invention, the wood composite material is formed of adhesive laminate waste comprising adhesive material, glue and release material and having been arranged into chaff, the chaff being arranged into the wood composite material.