| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a tray-shaped composite paper container which is excellent in heat resistance, gas barrier property, sealability by a lid and rigidity and which can be applied to a microwave sterilization process. SOLUTION: The tray-shaped paper composite container comprises an outer vessel having a flange made by press-molding a paper board material and formed with a plurality of fine holes on a base and an inner vessel made by thermo-forming a thermoplastic resin sheet having gas barrier property, wherein the inner vessel is inserted inside the outer vessel and an internal surface of the outer vessel and an external surface of the inner vessel are stuck to each other.</p> |
