| 摘要 |
PROBLEM TO BE SOLVED: To provide a metal deposited composite polypropylene film for improving heat resistance of a metal deposited film with excellent gas barrier properties by providing less cutting in the case of sealing by heat sealing and less tunneling with satisfactory sealability. SOLUTION: The metal deposited composite polypropylene film is obtained by sequentially laminating layers (A), (B), (C) in such a manner that the layer (A) is made of crystalline propylene resin, the layer (C) is made of crystalline propylene-α-olefin copolymer having a lower crystallizing melting point by 15 deg.C than the layer (A). The layer (B) is obtained by depositing metal on the layer (A) of a layer made of composition of crystalline propylene-α-olefin copolymer having two or more peaks of crystallizing melting point in a range of the crystallizing point of the polymer for constituting the layer (C) to the crystallizing point or lower of the polymer for forming the layer (A) and/or composition of the crystalline propylene resin. |
