PROBLEM TO BE SOLVED: To provide a film for test pressure which eliminates deviation and unevenness in an air space for denture base molding formed at a gypsum mold of a rice-cake shaped resin, does not cause the generation of a point in which the rice-cake shaped resin is insufficient, can sufficiently and surely fill the rice-cake shaped resin into a minute part of the air space, and does not cause breakage, when the rice-cake shaped resin is deformed so as to coincide with a shape of the air space while gradually generating burrs, in test pressure in which a wax denture which is formed following a general method is buried in a flask together with a work model with gypsum, and the rice-cake shaped resin is filled into an air space for denture base molding formed at a gypsum mold which is obtained by wax elimination.SOLUTION: One piece of a rectangular thermoplastic resin film 2 is folded into two pieces and double-layered, and a narrow-width linear thermal bonding part 4 is arranged slightly inside one side edge which crosses a folded line 3 formed by the double-folding.
