| 摘要 |
<p>PURPOSE: To obtain a barrier package for a cigarette by constituting of a foil layer, exterior and interior skin layers of thermoplastic polymers each having specific thickness and softening point, first and second biaxially oriented polypropylene homopolymer layers, and first and second adhesive layers for bonding to surfaces of the foil layer. CONSTITUTION: A laminate 50 for a package is laminated in a symmetrical structure at a foil layer 52 as a center. The layer 52 has a thickness of about 0.25 to 0.35 mil. Extremely thin exterior and interior skin layers 54, 56 each has a thickness of about 0.05 to 0.1 mil, and is formed of a united heat-sealable thermoplastic polymer having a softening point of about 73.8 to 87.7 deg.C. The layers 58, 60 are formed of a biaxially oriented polypropylene homopolymer. And, fixing agent layers 62, 64 for improving adhesive properties to the layer 52 are respectively adjacently arranged to the layers 58, 60. And, adhesive layers 66, 68 are provided to connect the layers 58, 60 to the layer 52.</p> |
