Propylene resin multi-layer sheet, and packaging body for heat treatment using same

A multilayer propylene resin sheet, comprising:

• an inner layer comprising a first propylene resin composition, and
• an outer layer comprising a second propylene resin composition that comprises a propylene resin having a melting peak temperature of from 150 to 170° C.,
• wherein the first propylene resin composition comprises from 40 to 89 wt % of a propylene resin composition A, from 10 to 40 wt % of an ethylene-α-olefin copolymer B, and from 1 to 20 wt % of a propylene resin C,
• the polypropylene resin composition A comprises from 30 to 70 wt % of a first propylene-α-olefin random copolymer component having a melting peak temperature of from 120 to 150° C., and from 70 to 30 wt % of a second propylene-α-olefin random copolymer component having a total content of C2 α-olefin, C4-8 α-olefin, or both of more than 10 wt % and up to 30 wt %,
• the polypropylene resin composition A has a melt flow rate at 230° C. and 2.16 kg of from 0.5 to 20 g/10 min,
• the ethylene-α-olefin copolymer B has a density of from 0.860 to 0.910 g/cm3 and a melt flow rate at 190° C. and 2.16 kg of from 0.1 to 20 g/10 min, and
• the propylene resin C has a melting peak temperature of more than 150° C. and up to 170° C. and a melt flow rate, at 230° C. and 2.16 kg of from 0.5 to 30 g/10 min.