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    • 10. 发明专利
    • Drug solution container
    • JP4060222B2
    • 2008-03-12
    • JP2003085699
    • 2003-03-26
    • 株式会社大塚製薬工場
    • 謙治 小西仁志 森康史 森本勇 立石
    • A61J1/10B65D33/38A61J1/05B32B27/00B32B27/28B65D39/04B65D51/18
    • PROBLEM TO BE SOLVED: To provide a mouth member, which shows excellent oxygen barrier properties and the stability in the oxygen barrier performance with the lapse of time and is manufactured in a simple process by injection molding, and a chemical container using it. SOLUTION: A main body 12 of the mouth member used for the mouth member 10 for the chemical container is equipped with a laminated structure which is located at least in the central part in the axial direction x and includes an inner layer 18 made of a polyolefin, an intermediate layer 20 made of an ethylene-vinyl alcohol copolymer, and an outer layer 22 welded to both layers 18, 20. Joints between the intermediate layer 20 and the other layers 18, 22 are disposed at places other than an inner peripheral surface 12a and an opening end 16a on the connecting side of the main body 12 of the mouth member. One joint 24b between the intermediate layer 20 and either the inner layer or the outer layer is provided on an outer peripheral surface 12b near the opening end on the connecting side, and the other joint 24a is provided on an opening end 14a on an inlet/outlet side or the like. The inner peripheral surface 12a for the main body of the mouth member is constituted of the inner layer 18 only. COPYRIGHT: (C)2005,JPO&NCIPI