Appeal No. 2006-0500
Application No. 10/094,709
mandrel, the composite layer is coated with a protection layer
made of a hardenable material, and the protection layer is
hardened before polymerization and/or crosslinking of the
composite layer. This appealed subject matter is adequately
represented by independent claims 1 and 14 which read as follows:
1. A method of manufacturing a part made of a composite
material comprising reinforcing fibers embedded in a matrix
made of a polymerizable and/or crosslinkable material,
characterized in that:
- at least one layer of said composite is deposited on a
mandrel by winding the reinforcing fibers on the mandrel,
- said at least one layer of said composite is coated with
at least one protection layer made of a hardenable material;
- said at least one protection layer is hardened before
polymerization and/or crosslinking of said at least one
layer of said composite.
14. A method of manufacturing a part made of a composite
material comprising reinforcing fibers embedded in a matrix
made of a B-stage thermosetting composition comprising a
polymerizable and/or crosslinkable material, with low regain
of water, oil and its components, with a glass-transition
temperature of at least 100 C, said composition comprisingo
at least one epoxide resin consisting of at least one
polyepoxide containing in its molecule at least two epoxide
groups and of at least one aromatic polyamine comprising in
its molecule at least two primary amino groups, at least one
alkanoyl substituent having 1 to 12 carbon atoms located at
alpha and one of the amino groups, the amine to epoxide
molar ratio ranging between 1:6 and 1:26, characterized in
that:
- at least one layer of said composite is deposited on
a mandrel,
2
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