Lightweight moulded piece and corresponding production method
AssigneeFachhochschule Landshut
InventorsOtto Huber, Hubert Klaus
Life of this patent
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Abstract
The present invention provides a lightweight moulded part and a corresponding production method. The lightweight moulded part comprises a core region (1) made of a lightweight composite material (10, 15) which comprises a matrix material (15) and at least one filler material (10); at least one surface or near-surface cover layer region (2a, 2b) which comprises at least one layer of fibre material (5) and the matrix material (15); the layer (or layers) of fibre material (5) of the cover layer region (2a, 2b) being integrated into the matrix material (15) of the core region (1).
Claims25
Lightweight moulded part comprising:
- a core region (1) made of a lightweight composite material (10, 15) and comprising a matrix material (15) and at least one filler material (10);
- at least one surface or near-surface cover layer region (2a, 2b) which comprises at least one layer of fibre material (5) and the matrix material (15);
- wherein the layer or layers of fibre material (5) of the cover layer region (2a, 2b) are integrated into the matrix material (15) of the core region (1);
- and
- wherein the lightweight composite material (10, 15) is a cellular composite material, bonded by a plastics material matrix material or bonded by a metal matrix material, with mineral foam granules or glass foam granules or metal foam granules as a filler material (10).
Production method for a lightweight moulded part with the following steps:
- preparing a mould (20, 30, 40;
- 60a, 60b;
- 70a, 70b, 70c, 70d) with a hollow space corresponding to the outer contours of the lightweight moulded part which is to be produced;
- applying at least one layer of a fibre material (5), corresponding to a surface or near-surface cover layer region (2a, 2b) of the lightweight moulded part which is to be produced, in the hollow space of the mould (20, 30, 40;
- 60a, 60b;
- 70a, 70b, 70c, 70d);
- shaking a filler material (10) of mineral foam granules or glass foam granules or metal foam granules into the hollow space of the mould (20, 30, 40;
- 60a, 60b;
- 70a, 70b, 70c, 70d);
- filling the hollow space of the mould (20, 30, 40;
- 60a, 60b;
- 70a, 70b, 70c, 70d) with a curable liquid matrix material (15) in such a way that the layer or layers of the fibre material (5) and the fill consisting of the filler material (10) are infiltrated;
- curing the matrix material (15), the layer or layers of fibre material (5) of the cover layer region (2a, 2b) being integrated into the matrix material (15) of the core region (1), leading to the formation of the lightweight moulded part;
- and
- demoulding the formed lightweight moulded part.
Production method for a lightweight moulded part according to either 14, wherein no macroscopic granules or hollow spheres are used.
Dependencies are inferred from the claim text.