B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
154/140
B32B 27/08 (2006.01) B32B 27/30 (2006.01) B32B 27/36 (2006.01) B65D 65/40 (2006.01)
Patent
CA 2013241
The present invention is directed to 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 based 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°C XA - XD 0°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, upon heat stretching, particularly upon high-speed heat stretching, generate pinholes, cracks, irregularities, local thickness irregularities, and has excellent gas barrier properties and is reliable.
Hirofuji Satoshi
Negi Taichi
Kirby Eades Gale Baker
Kuraray Co. Ltd.
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