| 摘要 |
PROBLEM TO BE SOLVED: To open easily and completely, prevent the occurrence of a meander in a container material during the process of manufacturing a vertically-sealed semi-product from the container material having a container unfolded-form, and obtain the vertical seal having no curves in adhesion. SOLUTION: The container is made of a container material 1 having thermoplastic resin layers on both its front and rear sides, and has a bandlike opening part 17 which laterally goes round a body 3 once. A uniaxially stretched resin film having a characteristic in which its draw ratio in one direction is higher than a draw ratio in a direction orthogonal to it is bonded to the inside of the container material 1 so that the direction of the higher draw ratio matches the direction in which the bandlike opening part 17 is opened. The width of a first body panel part 3a formed on a first panel 6 which has an opening start part 19 for the bandlike opening part 17 is greater than the width of a third body panel 3c formed on a third panel 8 which is opposite the first panel 6. Also, one or more pairs of notches 21 from which the container is opened are formed on the first body panel 3a within a length which does not exceed the seal area where a seal panel 10 is superimposed on the first body panel part 3a. |
