| 摘要 |
PURPOSE: Air-tight sealing packages are provided to obtain complete airtight envelope by preventing the generation of a ventilation path caused by the distortion of a fastener in the heating-pressure. CONSTITUTION: A pair of fasteners(12) include male/female fastener units, and a fastener end portion(18) is adjacent to an outer edge. The end portion of the fastener is become open to the dotted lines(24,26) due to the heating-pressure between the both sidewalls of the envelope. The end portion of the fastener forms an integrated bonding portion, and a portion(28) adjacent to the inner portion of the envelope is melted through the heating of a mold. Accordingly, the melted fastener is integrated with the film.
|
