The object of investigation was thin (< 200 m) films, formed by casting fro m water based mixtures of poly(vinyl a lcohol) (PVA ) water solution and poly (vinyl acetate) (PVAc) water suspension. Starting systems hence were suspensions of plasticized PVAc partic les in PVA water solution. Systems with full range of PVAc volume fraction PVAc were studied. Kinetic re lationships of several para meters which characterize film formation in dry ing process were co mpared and scrutinized. It revealed that the main factor which restrains coalescence of PVAc part icles in the composite is high v iscosity of PVA water solution at the final stage of composite structure formation. In tensile defo rmation conditions PVA/ PVAc systems behave as being PVA matrix co mposites in a whole range of PVAc content . Use of Kerner approach, based on the self-consistency idea, for the analysis of ECOMP(PVAc) relation, confirms the continuity of PVA matrix.