Method for the preparation of composite material in sandwich form
AssigneeSaint-Gobain Performance Plastics France
InventorsGaëtan MAO, Nicolas DUMONT
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Abstract
The object of the invention can be a method of manufacturing a product in the form of a sandwich comprising a core and outer layers. The outer layers may be composed of composite material comprising a fiber-reinforced polymeric matrix. The method uses an insert of heat-resistant material, for example silicone. The object of this invention can be to provide a method of manufacturing a sandwich that dissociates the choice of material of the core of the sandwich from the choice of the material of the outer layers.
Claims13
A method of manufacturing a sandwich-shaped composite material product wherein the sandwich-shaped composite material product comprises two outer layers and a core, the outer layers having a matrix of fiber-reinforced polymeric material, the polymeric material having a melting point below the melting point of the material constituting the fibers;
- wherein the method being characterized in that it uses an insert consisting of material having a melting point higher than the melting point of the polymeric material, on which the outer layers are consolidated;
- and
- wherein this insert is subsequently replaced by the core of the sandwich, the assembly then undergoing a consolidation treatment for bonding the outer layers to the core.
Dependencies are inferred from the claim text.