摘要 |
<p>PROBLEM TO BE SOLVED: To provide a formed paper tray having a flanged part, using stretchable paper, having the high degree of freedom of a shape, and excellent in barrier properties with high sealing properties. SOLUTION: A thermoplastic resin layer (3) is laminated on a recess/ protrusion-forming surface of stretchable paper (2) provided with line-like recesses and protrusions formed in advance at least in one direction, and a laminate (1) is thus formed. After heating the laminate (1) from the side of the thermoplastic resin layer face thereof, it is formed into a paper tray by a forming method of any one of a pressure forming method, a vacuum forming method, a vacuum pressure forming method, or a pressing method. By using a thermoplastic resin having gas barrier properties for a part of the thermoplastic resin layer (3), barrier properties are imparted to the paper tray.</p> |