Composite moulding, especially used as keyboard mat

摘要

Composite mouldings (CM) consist of (a) a layer of polyorganosiloxane rubber (a') and (b) oil-impermeable film made of organic plastic (b') with a thickness of not more than 40 mu m. Also claimed is a process for the production of CM by adhesively bonding a moulding product made of vulcanised rubber (a') with film (b), or by vulcanising unvulcanised (a') on film (b).