| 摘要 |
PROBLEM TO BE SOLVED: To obtain a multilayered structure having good appearance by applying a molten multilayered structure, which consists of an EVOH layer reduced in thermal deterioration within an extruder, improved in heat stability (long-run properties) and high speed film forming properties at the time of production and also good in gas barrier properties and the carboxylic acid modified polyolefin resin layer adjacent thereto, to a base material by co-extrusion coating. SOLUTION: A multilayered structure is obtained by applying a molten multilayered structure, which consists of a layer with a thickness of 2-10μm comprising an ethylene/vinyl alcohol copolymer with an ethylene content of 33-37 mol%, a saponification value of 99% or more and a melt index (190 deg.C, load of 2,160 or lower) of 6-10 g/10 min and the carboxylic acid modified polyolefin resin layer adjacent thereto, to a base material by co-extrusion coating.
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