WATERPROOF ROOFING SHEET AND ITS MOLDING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a waterproof roofing sheet capable of being stably taken up even in a long size, while imparting a superior aesthetic appearance and design performance. SOLUTION: This waterproof roofing sheet forms a roof by being laid on a roof backing having a pitch; and is constituted by forming a continuous pattern for substantially uniformizing the cross-sectional area in the longitudinal direction of the sheet in an optional position in the width direction, by repeating unit patterns 11 and 12 forming a boundary 13 of a step 14 formed in the thickness direction of the sheet, on a surface of a waterproof sheet body 10 composed of a soft high polymer material. COPYRIGHT: (C)2005,JPO&NCIPI