NOVELTY - A polyester resin is molded in sheet form in which polyester resin is melt-extruded in sheet formed from extruding die, and extruded polyester resin is pushed to casting drum (12), and cooled by adhering to casting drum. The polyester resin is cooled, and two-dimensional arrangement along the curved surface of casting drum is rectified by applying air. The water droplet is discharged through exhaust port arranged by both ends of spraying nozzle, and sprayed with respect to polyester resin in which casting drum is adhered, to obtain non-expanded polyester sheet (13).    USE - Manufacture of non-expanded polyester sheet used for protection sheet for solar cell module (all claimed).    ADVANTAGE - The non-expanded polyester sheet is efficiently manufactured with excellent hydrolysis resistance, durability, weather resistance and electric power generation performance, and reduced cooling non-uniformity, and suppressed generation of dispersing water droplet. The crystallization is prevented.    DETAILED DESCRIPTION - A polyester resin is molded in a sheet form in which a polyester resin is melt-extruded in a sheet formed from an extruding die, and extruded polyester resin is pushed to casting drum after giving a vibration to the polyester resin, and cooled by adhering to a casting drum. The polyester resin is cooled, in which water is sprayed from two or more spraying nozzles arranged in the casing, and two-dimensional arrangement along the curved surface of casting drum is rectified by applying air, such that mist-like water is inserted from 2 rectification nozzle arranged, such that the spraying nozzle is pinched. The water droplet is discharged through the exhaust port arranged by both ends of spraying nozzle, and sprayed with respect to the polyester resin in which the casting drum is adhered, to obtain non-expanded polyester sheet. INDEPENDENT CLAIMS are included for the following:    (1) protection sheet; and    (2) solar cell module.    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view of apparatuses.    Casting drum (12)    Polyester sheet (13)    Cooling device (14)    Water absorption roll (30)