| 主权项 |
1. A closure on a rectangular container comprising:
at least one panel wall coated with a heat sealable polymer film layer, said wall including a first pair of opposite side walls and a second pair of opposite side walls, said wall connected along a single joint for storing pourable consumer products, a closure formed by four faces, a first and a second of said four faces connected to said first pair of opposite side walls along respective first and second fold lines, a third and a fourth of said four faces connected to said second pair of opposite side walls along respective third and fourth fold lines; each of said first and second faces including a diagonal fold line extending from an end of a respective one of the first and second fold lines to a free edge of the respective first and second faces, said third face including diagonal scoring lines extending from meeting points of the first and third folding lines and the second and third folding lines, respectively to a free edge of the third face, said third face including face section parts; said first and second faces folded inwardly such that the first and second free edges of the first and second faces meet edge to edge at a closure center line, said fourth face is folded over part of the first and second faces and connected thereto by a permanent seal, said third face is connected to the first and second faces by heat sealing with inside sections of said third face being heat sealed onto outwardly folded sections of the first and second faces and with said face section parts secured to the first and second faces, respectively; whereby, when opening the closure, said diagonal scoring lines delaminate and the face section parts are torn and separated from the third face to allow separation of the third face from the first and second faces and formation of a pouring opening partially defined by the outwardly folded sections and the inside sections. |
