| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing a packaging body capable of sealing in a short time period.SOLUTION: A method of manufacturing a packaging body obtained by overlapping sheets respectively having a foam layer and a heat seal layer, and joining peripheral parts of the sheets by means of the heat seal layers includes the steps of: overlapping the foam layers facing each other and forming a decreased thickness parts at the peripheral parts, and thereafter cutting by melting the heat seal layers together at the foam layers of the decreased thickness parts so as to join them. The method alternatively includes overlapping the heat seal layers facing each other, and cutting by melting the heat seal layers together with foam layer so as to join them. |
