FILM FOR COMPOSITE SECURITY DISKS WITH SELF-ADHESIVENESS.

摘要

Films containing a plasticiser based on partially acetalised polyvinyl alcohols, especially PVB, adapted in such a manner that the intermediate layer in the composite security glass exhibit, aswell as excellent adhesiveness with respect to glass, non-desirable self-adhesiveness (blocking-tendency). A pentaerythrite ester of between 0.0001 0.1 wt % is therefore used as an additive to reduce said adhesiveness. Said additive does not alter the adhesiveness of the film with respect to glass. The invention is used in the production of films for producing composite security glass. The need for cooling the films in order for them to stacked or rolled up is greatly reduced.