| 摘要 |
<p>Provided are multilayered structures comprising at least 2 layers consisting of a layer of a composition (C) comprising 50 to 95 wt% of an ethylene-vinyl alcohol copolymer (A) and 50 to 5 wt% of a thermoplastic polyester (B) comprising at least 50 mol% of isophthalic acid base on the total moles of carboxylic acid component and 0.1 to 30 mol% of 1,3-bis( beta -hydroxyethoxy)benzene and/or diethylene glycol based on the total moles of diol component, and a layer of a thermoplastic resin (D), said (A) and (D) satisfying the following relationship (I): 110 DEG C >/= XA - XD >/= 0 DEG C (I) wherein XA represents the melting point of A and XD represents the melting point or, in the case of no melting point, the softening temperature, of D. The multilayered structure does not cause, upon heat stretching, particularly upon high-speed heat stretching, to generate pinholes, cracks, irregularities, local thickness irregularities, and have excellent gas barrier property and its reliability.</p> |
