PROPYLENE-BASED RESIN SHEET FOR PTP PACKAGING

摘要

PROBLEM TO BE SOLVED: To obtain a polypropylene-based resin sheet for PTP packaging, controlling occurrence of curl in laminating in laminating the polypropylene- based resin sheet to an aluminum foil cover material. SOLUTION: This polypropylene-based resin sheet for PTP packaging is characterized in that the sheet comprises a polypropylene-based resin, has a first surface and a second surface in which an absorbance ration in the first surface (ratio of absorbance at wavenumber 998 cm-1 to an absorbance at wavenumber 974 cm-1) AH and an absorbance ratio in the second surface AL satisfy the formula AH>AL and a distance T1 between a point to provide the maximum value Amax of absorbance ratio in the thickness direction of the sheet and the first surface and a distance T2 between the point and the second surface satisfy the formula 0.7<=[T2/(T1+T2)]<=1, the value of (a) which is defined by the formula a=(Amax-AL)×(T1+T2)/T1 is >=0.1 and <=1.3 and the value of (Amax-AL) is >=0.1 and <=1.