| 摘要 |
PURPOSE: To provide the title package performing the venting of steam effective ly through the through-hole formed to a part of a packing material formed rapidly by the heating due to an microwave oven, obtained by a simple manufac turing process and hermetically sealing content perfectly. CONSTITUTION: The sheet material 32 covering the opening surface of a container main body part 30 is formed by laminating an outer surface film 36 and an inner surface film 38 to mutually bond them and the degassing passage 40 extending to the end edge of the sheet material to open is formed to the sheet material at a part where the outer and inner surface films are not partially laminated and a conductive material 44 generating heat by the irradiation with microwaves to melt a part of the inner surface film to form a through-hole is bonded at the position corresponding to the part where the degassing passage is formed on the outside of the inner surface. |
