Decorated synthetic resin sheet

A synthetic resin sheet product comprising a continuously cast sheet of polymerized synthetic resin syrup integrally joined on at least one side with one side of an unwrinkled uniformly thick preformed film of polymerized synthetic resin that is compatible with said syrup and on which said syrup has been continuously cast so as to initially cause partial softening and dissolving of said one side of the film with the syrup and subsequent integration therewith by polymerization of the syrup, said sheet being continuously cast with a uniform thickness throughout.