| 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 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 2-30μm comprising an ethylene/vinyl alcohol copolymer with an ethylene content of 25-45 mol%, a saponification value of 99% or more and a melt index (190 deg.C, 2,160 load) of 6-10 g/10 min and containing 10-50 ppm of a salt of a group II metal and the carboxylic acid modified polyolefin resin layer adjacent thereto, to a base material by co-extrusion coating. |
