| 摘要 |
A packaging with improved reclosable opening is disclosed having a packaging body. The packaging body has an upper front main packaging sheet; a lower front main packaging sheet and a back main packaging sheet which are sealed together to form an edge-to-edge sealing. A reclosable opening is provided for inserting objects into the packaging. A diverting is means predisposed in such a manner and has a dimension sufficient to cover the reclosable opening to direct airflow away from the reclosable opening when there is an increase in internal air pressure. A weakened sealing is formed at a part of the edge-to-edge sealing wherein the weakened sealing ruptures when the increase in internal air pressure has build up to a critical point. When increased internal air pressure has build up to a critical point, the weakened sealing ruptures to allow air to vent through. The critical point is reached when the internal pressure is greater than external pressure to a sufficient extent to rupture the weakened sealing. The weakened sealing can be created by using a heat sealing temperature which is lower than the sealing temperature used for forming the rest of the edge-to-edge sealing, having a designated sealing area smaller than the sealing area of the rest of the edge-to-edge sealing, forming a notch on part of the edge-to-edge sealing, or disposing a film between the front and back main packaging sheets on part of the edge-to-edge sealing, wherein the film is made of a second material. |
