To obtain easy peelability even if sealing is made with sufficient sealing strength by forming a transparent polystyrene resin sheet with a polyethylene easily peelable layer, and using low-priced ordinary lid material.
A multi-layer sheet induces a peelable layer A composed of low-density polyethylene, a glue line B in contact with the layer A, and a polystyrene resin layer C. The adhesion strength between the peelable layer A and glue line B is 2.0kg/25mm or more, and the adhesion strength between the glue line B and the polystyrene resin layer C is 0.8-1.2kg/25mm. A container has multi-layer construction of the multi-layer sheet, a recess part having an aperture, and an aperture circumference for sealing the lid maderial circularly. And the seal surface on the circumference constitutes a peelable layer A.
TAKAHASHI HIROYUKI
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