| 摘要 |
<p>A laminate comprising at least four layers, i.e., an innermost seal layer (A) made of a polypropylene having a melting point of 160°C or above as the first layer, an adjacent layer (B) made of a mixture comprising 20 to 90 wt.% of polypropylene and 80 to 10 wt.% of a 4-methylpentene-1 resin as the second layer, an interlayer (C) made of a polypropylene having a melting point of 160°C or above and a melt index of 0.5 to 30 as the third layer, and an outermost base layer (D) made of a polypropylene having a melting point of 160°C or above and a melt index of 0.01 to 4, wherein the melt index of the seal layer (A) is at least 1.1 times that of the interlayer (C), the melt index of the interlayer (C) is larger than that of the base layer (D), the peeling strength between the layers (A) and (B) is lower than that between the layers (B) and (C), and the peeling strength between the layers (A) and (B) is 0.2 to 2.5 kg/15 mm (as determined at a rate of pulling of 300 mm/min).</p> |
