摘要 |
Heat-sealing polypropylene films having specific characteristics, and being well-balanced between a tensile modulus and a heat seal temperature, less tacky, and excellent in processability, transparency and impact resistance, as well as being excellent in resistance to whitening due to peeling, softness and impact resistance. A multilayered heat-sealing polyolefin resin laminate having at least one outermost layer produced from the above heat-sealing propylene polymers exhibits excellent low-temperature heat sealability and sufficient interlaminar strength without the use of an adhesive. The heat-sealing propylene polymers are produced by polymerizing propylene or polymerizing propylene with ethylene and/or C<SUB>4</SUB>-C<SUB>20 </SUB>alpha-olefin in the presence of a polymerization catalyst containing a transition metal compound represented by the following formula (I): wherein A<SUP>1</SUP>, A<SUP>2</SUP>, E<SUP>1</SUP>, E<SUP>2</SUP>, M, X, Y, q and r are as defined in the specification.
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