Continuous production of profiles in a sandwich type of construction with foam cores and rigid-foam-filled profile
AssigneeEvonik Roehm GmbH
InventorsSebastian BUEHLER, Karl-Heinz SEMLITSCH, Sivakumara K. KRISHNAMOORTHY
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Abstract
The present invention relates to a novel process for the production of novel fibre-reinforced profile materials comprising a rigid foam core, in particular a PMI foam core. In particular, the present invention relates to a novel process which can be carried out in two variants, a short Pul-press process and a Pul-shape process. One step here produces a fibre-reinforced profile material and simultaneously inserts the rigid foam core into same. The same step moreover ensures very good binding of the rigid foam core to the fibre-reinforced profile material.
Claims18
A process for continuous production of fibre-reinforced profiles comprising a foam core, the process comprising:
- a) introducing foam cores and connecting a newly introduced foam core to an end of the most recently introduced foam core;
- b) wrapping a fibre material around the foam core;
- c) impregnating the fibre-material wrap with a resin;
- d) optional optionally moulding the wrapped foam core in a first mould;
- e) heating and thereby optionally hardening the resin in a second mould;
- f) cooling the wrapped foam core in a third mould;
- and
- g) separating individual profiles by cutting or sawing and removing the finished workpiece,
- wherein the second and third mould are moved in respectively mutually opposite direction on carriages.
A hollow profile comprising a foam core and of an outer material, wherein the outer material is a thermoplastic or thermoset reinforced with fibre material and the foam core is a rigid foam, wherein the profile comprising the rigid foam has no adhesive layer and no joins, and the outer material encloses the foam core entirely or with only very small gaps.
Dependencies are inferred from the claim text.