| 摘要 |
PROBLEM TO BE SOLVED: To provide a package vessel showing excellent re-bonding strength and sealability and capable of being easily re-sealed. SOLUTION: The package vessel 1 includes a vessel body 2 having a recess 21 in which a content P is housed and having an approximately rectangular shape in a plan view. A cover material 3 clogging an opening 22 is fitted to the vessel body and is heat-sealed to a flange part 23 arranged in the peripheral edge of the opening to form a seal part 24. The vessel body is formed of a multi-layered sheet 25 made of a base material layer 253 containing a heat seal layer 251, an adhesive layer 252, and a gas barrier layer 2531. The cover material is formed of a multi-layered sheet 34 composed of a heat seal layer 341, an adhesive layer 342, and a base material layer 343. When the package vessel is opened, the adhesive layer is exposed, and the package vessel can be re-sealed by re-bonding the exposed adhesive layer. COPYRIGHT: (C)2008,JPO&INPIT
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