Abstract: The present invention provides a flexible high-density fiberboard which is essentially free of formaldehyde and isocyanates and comprises 70 to 90% by weight of straw fibers, and 30 to 10% by weight of a thermoplastic elastomer and one or more optional additive(s). Furthermore, the present invention provides a method for manufacturing such a flexible high-density fiberboard comprising the steps of providing straw fibers, providing a thermoplastic elastomer in powder form, optionally providing one or more additive(s), dry mixing the straw fibers, the thermoplastic elastomer powder and optionally the one or more additive(s), such that a mixture comprising 70 to 90% by weight of the straw fibers, and 30 to 10% by weight of the thermoplastic elastomer and one or more of the optional additive(s) is obtained, extruding the obtained mixture at a temperature such that the thermoplastic elastomer powder is in a molten state, and pressing the extruded mixture.

Abstract: A composite frame (110) for insertion in a building aperture comprises a blind frame (112) and a sash frame (114) hinged to the blind frame (112), wherein the sash frame (114) has an inner sash frame profile (116) and on an outward facing side of the inner sash frame profile (116) is provided an adapter profile (118) fixedly connected to the inner sash frame profile (116) for fixedly inserting a panel (120) provided for this purpose. The blind frame (112) comprises an inner blind frame profile (122) essentially surrounding the inner sash frame profile (116) and on a side of the inner blind frame profile (122) on the outside of the building is provided an outer visible part (124) fixedly connected to the inner blind frame profile (122).