Process and device for bending a sheet of synthetic material filled with alumina trihydrate
AssigneeCrea Diffusion
InventorFrancois Provence
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Abstract
A process is provided for bending a board in synthetic material filled with more than 20% by weight of alumina trihydrate in a methyl methacrylate matrix: a section of the board is heated so that it can be bent; the section to be bent is bent while holding the convex upper surface of the board such that it does not become elongated. Also provided are a device for implementing such a process, and a bent board obtained by such a process.
Claims13
A method for bending a synthetic material board filled with more than 20% alumina trihydrate in a methyl methacrylate matrix, the method comprising the steps of:
- heating a section of the board that is to be bent;
- and
- bending the section of the board to be bent,
- wherein during the bending step, the upper surface of the board is held firmly-such that it cannot be elongated during bending.
A bending device for bending a synthetic material board filled with more than 20% alumina trihydrate in a methyl methacrylate matrix, by heating a section of the board that is to be bent, and bending the section of the board to be bent, the bending device comprising:
- systems for clamping the board so that the upper surface of the board is held firmly so as to prevent elongation of its upper surface during bending.
A bent synthetic material board that is filled with more than 60% alumina trihydrate, the bent board being obtained by performing the steps of:
- heating a section of the board that is to be bent;
- and
- bending the section of the board to be bent,
- wherein during the bending step, the upper surface of the board is held firmly such that it cannot be elongated during bending.
Dependencies are inferred from the claim text.