Abstract: The invention relates to a process for producing sheath-core staple fibers with a three-dimensional crimp and to a sheath-core staple fiber of this type. In this case, the fiber is extruded with a symmetrical sheath-core arrangement consisting of two different polymer melts with a first polymer component for the core and with a second polymer component for the sheath. In order to generate an as far as possible intensive three-dimensional crimp in the fiber, the cooling of the fiber takes place by means of a sharp cooling air stream with a blowing air velocity of at least 3 m/sec., after the combining of the fibers into a tow the multistage treatment in a fiber line taking place under a maximum temperature load which lies below the glass transition temperature of the second polymer component in the sheath of the fiber. A high degree of three-dimensional crimping can consequently be achieved after the multistage treatment and before the cutting of the fiber.

Abstract: In a process for preparing a molding from fibers and/or flakes and thermoplastic binder, the material is introduced into a mold, compacted, and bonded by thermal effect. To make it possible to introduce the material rapidly and such that a consistently equal density or a density changing in a defined pattern will be obtained, a filling contour calculated for the given molding is formed by a first mold disk set. After filling the filling contour, a first finished contour mold is positioned against it. A second mold disk set, whose disks are displaceable between the disks of the first mold disk set and form the second finished contour of the molding, is subsequently displaced in the first mold disk set against the first finished contour mold, while the material present in the filling contour is compacted. The material is subsequently fixed by thermal effect.