NOVELTY - A sheet comprises 20-50 pts. wt. propylene ethylene block copolymer, and 50-80 pts. wt. propylene-type thermoplastic elastomer. The propylene ethylene block copolymer is obtained by carrying out polymerization of 30-95 wt.% propylene ethylene random copolymer component comprising 7 wt.% or less propylene, and 5-70 wt.% propylene ethylene random copolymer component comprising 3-20 wt.% ethylene in presence of metallocene catalyst at melt flow rate of 0.5-100 g/10 minutes at 230 degrees C under load of 2.16 kg.    USE - Sheet is used for packing foodstuff, pharmaceutical product and garment material, and desk mat, motor vehicle interior-and-exterior-cladding, agricultural greenhouse cover, mud and water sheet, waterproof sheet, decorative sheet for trim material and furniture, and solar cell component.    ADVANTAGE - The sheet has excellent transparency, softness, and heat resistance.    DETAILED DESCRIPTION - A sheet comprises 20-50 pts. wt. propylene ethylene block copolymer, and 50-80 pts. wt. propylene-type thermoplastic elastomer with respect to 100 pts. wt. propylene ethylene block copolymer and propylene-type thermoplastic elastomer. The propylene-type thermoplastic elastomer comprises 65-95 pts. wt. propylene/( alpha )-olefin copolymer, and 5-35 pts. wt. ethylene/( alpha )-olefin copolymer with respect to 100 pts. wt. propylene/( alpha )-olefin copolymer, and ethylene/( alpha )-olefin copolymer. The propylene ethylene block copolymer is obtained by carrying out polymerization of 30-95 wt.% propylene ethylene random copolymer component (A) comprising 7 wt.% or less propylene, and 5-70 wt.% propylene ethylene random copolymer component (B) comprising 3-20 wt.% ethylene in presence of metallocene catalyst at melt flow rate of 0.5-100 g/10 minutes at 230 degrees C under load of 2.16 kg, and has melting peak temperature of 110-150 degrees C measured by differential scanning calorimetry method, molecular weight distribution of 1.5-4 measured by gel permeation method, and temperature-loss tangent curve having single peak of 0 degrees C or less obtained by solid viscoelasticity measurement.