Patent ID: 7331716

Claim:
A flexible container being openable by tearing comprising: a holding part formed of a flexible material; seal parts formed in the holding part for sealing the holding part and that can be torn to open the holding part; single or plural cuts formed on the seal parts; and a seal-breaking guide provided adhesively in the holding part for giving guidance for a direction of tearing of the holding part, said holding part being torn from the single or plural cuts to be opened, wherein the seal-breaking guide includes: a first reinforcing part and a second reinforcing part which are formed of a flexible material, said first and second reinforcing parts being respectively provided in symmetrical shape while extending over a ridge line of said holding part, said first and second reinforcing parts reinforcing said holding part; an inclined edge part formed in said first and second reinforcing part, said inclined edge part giving said holding part guidance of a direction of tearing generated from said cut toward said ridge line; a first slit formed in said first and second reinforcing parts by extending said inclined edge part, said first slit giving guidance for a direction of tearing of the holding part toward said ridge line so as to restrict a range of tearing of the holding part; and a second slit formed in said first and second reinforcing parts adjacent to but not co-linear with said first slit said second slit giving guidance for an advance of tearing of the holding part from said first slit toward said ridge line so as to restrict a range of tearing of the holding part, wherein said holding part is torn so that a part of said first and second reinforcing parts is broken to form an opening in said holding part, and an edge part of said opening is reinforced by said first and second reinforcing parts.