To obtain a drug packing polypropylene sheet excellent in thermoforming properties and large in molding temp. width at a time of molding processing by melting and kneading a polypropylene resin and a polyethylene resin specified in m.p. deference to form the kneaded mixture into a sheet while quenched at specific temp.

A resin compsn. is constituted of one or more kind of a polypropylene resin and one or more kind of a polyethylene resin characterized by that the m.p. difference between two adjacent components among melting points of all of components due to differential scanning calorie measurement (JIS K-7121) is mutually 8-20°C and the difference between the max. and min. values. thereof is 30°C or higher. Further, a resin compsn. wherein the sum total kinds of resins is three or more is melted and kneaded to be formed into a sheet while quenched at 80°C or lower. As a polypropylene to be used, a propylene homopolymer, a propylene/ethylene block copolymer or a mixture of them is designated.