Abstract: In conventional methods for the production of components from resin prepregs made from fibre-reinforced plastics and sheet moulding compounds (SMCs), individual strips of varying lengths are cut from one or several rolls of semi-finished material. According to the form and size of the component the strips are laid adjacent to each other. A laminated pre-form is then produced by superimposing the strip sections of varying lengths with differing orientations for the individual layers in relation to the expected loadings, then laid in a press and moulded to give a component by flow moulding. According to the invention, the production of components made from SMC may be simplified and considerable styrol vaporisation on using unsaturated polyester resins may be avoided, whereby the material reinforcement for the resin prepreg comprises at least one layer of crossed fibres, which can also be a textile structure.

Abstract: The invention relates to a process for the separation and detection of components of a mixture of materials by temperature gradient gel electrophoresis, wherein eithera spatial temperature gradient is built up by spatially separated temperature levels, ora time temperature gradient, ora temperature gradient is built up by combination of spatial and timewise temperature gradient.The temperature levels for building up the spatial temperature gradient are adjusted by controllable heating or cooling devices.To build up the time temperature gradient, the temperature level at each point of the separation path within the separation medium may be optionally adjusted time-dependently by means of controllable heating or cooling devices. There is described a device for performing the process with controllable heating or cooling devices to build up temperature gradients, a hollow body arranged between the temperature levels which contains the medium used for separation, and a thermostat jacket enclosing the hollow body.