Upm-kymmene Corporation

Jere Salminen

Sami Turunen

Harri Kosonen

Kari Luukko

Petri Myllytie

Stefan Fors

Vilho Nissinen

Juha Tamper

Mauno Miettinen

Meri Ventola

In a method and an apparatus furfural is recovered from a steam stream () which is formed in a treatment of a pretreated wood based material (). The pretreated wood based material () which comprises at least carbohydrates is treated in a steam treatment stage () in which the steam is released. The steam stream () which comprises furfural is supplied out from the steam treatment stage (). A pretreated and steam-treated wood based material () which comprises carbohydrates is supplied out from the steam treatment stage (), and the steam stream () is treated in a recovery stage () for recovering a furfural based fraction ().

Method and an apparatus for recovering furfural

The invention relates to a method for manufacturing a composite product comprising organic natural fiber material and matrix material, wherein the method comprises mixing the organic natural fiber material with the matrix material in a primary mixing stage to form a mixture. The primary mixing stage comprises a contacting step in which the organic natural fiber material comes in contact with the matrix material that is at least partly in a form of melt, and compression ratio of the organic natural fiber material is less than 8. The method further comprises forming a composite product comprising the mixture. Further, the invention relates to a composite product, a use of the composite product, and a system for manufacturing a composite product.

Method and a system for manufacturing a composite product and a composite product

Providing composite structures with micro contoured surface layer. There is provided a method to adjust roughness level of micro contoured surface layer when manufacturing a composite and products thereof. The micro contoured surface layer may cover all or at least part of the surface area of the composite product. The roughness level of micro contoured surface layer may be increased or decreased by controlling the process parameters. In particular, there is provided a method to increase the roughness level of composite material having a primary surface layer with a primary surface roughness by softening the primary surface layer of the composite material by heating and providing a secondary surface layer of the composite material surface with a secondary surface roughness by cooling the softened surface layer. Further, there are provided methods to determine and visualize the level of micro contoured surface layer roughness on a composite product surface.

Method to manufacture a composite product with micro contoured surface layer

The application relates to a composition and manufacturing and a use of a composite structure having vibrational properties and to a product thereof. According to an embodiment a composition comprises a matrix material and organic natural fiber material, wherein speed of sound is arranged to be different in different directions in the composition.

Composite structure with vibrational properties

The invention relates to a composite comprising matrix material and organic natural fiber material. The composite may be a compound, a granulate, or at least a part of a sound reproduction device. The composite may be made by injection molding. According to an embodiment a composite comprises matrix material and organic natural fiber based material, wherein the matrix material comprises a thermoplastic polymer matrix. The composite may comprise a relative sound wave resistance of 1500-5000. The composite may comprise a relative damping of sound radiation of 1.5-5.0. The composite may comprise a dynamic modulus of 2000-11000 measured according to ISO 6721-3. The composite may comprise a relative acoustic quality factor of 5-200. The composite may comprise a relative factor of viscous damping of 0.500-0.005.

Composite having acoustic properties, manufacturing the composite, a component comprising a composite, manufacturing the component and uses thereof

The invention relates to a method for manufacturing a composite product comprising organic natural fiber material and matrix material, wherein the method comprises mixing the organic natural fiber material with the matrix material in a primary mixing stage to form a mixture. The primary mixing stage comprises a contacting step in which the organic natural fiber material comes in contact with the matrix material that is at least partly in a form of melt, and bulk density of the organic natural fiber material is less than 500 kg/m. The method further comprises forming a composite product comprising the mixture. Further, the invention relates to a composite product, a use of the composite product, and a system for manufacturing a composite product.

The invention relates to a composite product. According to the invention, the composite product contains a polymer based material and an organic natural fiber material, and the organic natural fiber material has a form, and the form of fibers of the organic natural fiber material is a flake, and the organic natural fiber material in the form of the flakes has been mixed with the polymer based material. Further, the invention relates to a method for manufacturing a composite product, a material component, a use of a composite product and a final product.

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Lappeenranta, Finland

Jere Salminen