| http://www.w3.org/ns/prov#value | - The flexible membrane according to the invention is noteworthy especially in that it is capable of being stiffened by a mechanism of cationically polymerizing the resin that it incorporates and in that this polymerization may be initiated by applying visible radiation and be activated by heat, this activation possibly being carried out at the same time as the initiation or at a later time.
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