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US 10,717,246 B2Granted
Flexible sheet-like material for bounding a matrix material feed space and method for the production thereof
AssigneesTrans-Textil GmbH, Airbus Defence and Space GmbH
InventorsWilhelm Krings, Manfred Hänsch, Leopold Pribil, Wilhelm Hierhammer
Life of this patent
Estimating the term…
Abstract
The flexible sheet-like material comprises a textile layer, which is coated at least on one side with a functional layer which is permeable to gas but impermeable to the matrix material, acting as a barrier layer for the matrix material, and is produced by coating the textile layer directly with a foam or a paste.
Claims5
A process for the vacuum assisted production of fibre-reinforced plastics material components from composite fibre semi-finished products which are arranged in a matrix material feed space, the process comprising:
- defining the matrix material feed space with a flexible sheet-like material, wherein the flexible sheet-like material comprises a textile layer and a gas-permeable but matrix material-impermeable foam layer or paste layer on the textile layer, the foam or paste layer being a barrier layer for a matrix material, the foam or paste layer comprising acrylate or a combination of acrylate and polyurethane, the dry layer weight of the foam or paste being 35-120 g/m2 and the foam or paste being compressed by a calendering device at an elevated pressure and an elevated temperature of 170-200° C.;
- and
- drawing the matrix material by suction from an external resin container into the matrix material feed space.
Dependencies are inferred from the claim text.