Container and method for manufacturing thereof

A method of manufacturing a manually openable container of a collapsible type for fluid contents, comprising

• joining, from a web of material comprising two opposite side-wall-forming portions, said two side-wall-forming portions along a connecting portion to provide a container with a defined compartment,
• a top corner portion of the container defining a product channel to be used when emptying the container of its contents,
• forming an opening initiation which extends across said product channel, along which opening initiation a tab is to be separated for opening of the container, said opening initiation comprising a starting portion, a stop portion and a terminating portion,
• the starting portion defining an extent in the connecting portion on a first side of the product channel and providing for separating of the tab from the container along that part of the opening initiation along which extends the starting portion, by a first separating force, and
• providing the terminating portion, at a distance from the starting portion, for separating the tab from the container along that part of the opening initiation along which extends the terminating part, by a second separating force (F2),
• whereby the distance between the starting portion and the terminating portion forming a space which is said stop portion, which is provided so that, for separating the tab from the container along that part of the opening initiation along which extends the stop portion, a third separating force is required, said third separating force being greater than the first and the second separating force,
• forming said web of material with a folded, bottom-wall-forming portion arranged between the side-wall-forming portions so that the compartment of the completed container is defined by two opposite side walls and a bottom wall, the volume of the compartment being dependent on the relative position of the walls,
• providing the terminating portion an extent in the connecting portion on a second side, opposite the first side of the product channel and in the product channel, and
• forming the terminating portion as weakenings of the container material.