Abstract: The present application relates to a natural fiber plastic composite product comprising thermoplastic polymer and dried deinking sludge containing cellulose fibers and minerals in foamed form. The present application also relates to a method for preparing the natural fiber plastic composite product.

Abstract: The present application relates to a natural fiber plastic composite product comprising thermoplastic polymer and dried deinking sludge containing cellulose fibers and minerals in foamed form. The present application also relates to a method for preparing the natural fiber plastic composite product.

Abstract: The present application 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, wherein the first layer comprises thermoplastic polymer and cellulose based particles, and the second layer comprises thermoplastic polymer and dried deinking sludge containing cellulose fibers and minerals. The present application also relates to a method for preparing the natural fiber plastic composite product.

Abstract: The present application relates to a natural fiber plastic composite product comprising thermoplastic polymer and dried deinking sludge containing cellulose fibers and minerals.

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 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).