Abstract: A method of compressing & heat sealing a container closure “junction” of a 180° folded polymer coated, medium to heavy gauge, paperboard panel edge, between a polymer coated paperboard panel and a polymer coated film element edge, liquid proof.

Abstract: A closure on a rectangular container with a square or rectangular cross section with the closure easily opened into a pour spout. The container closure can be resealed. The new container provides a consumer friendly container design, reduced materials consumption, high efficiency from production capacity and distribution view points.

Abstract: A closure on a rectangular container with a square or rectangular cross section with the closure easily opened into a pour spout. The container closure can be resealed. The new container provides a consumer friendly container design, reduced materials consumption, high efficiency from production capacity and distribution view points.

Abstract: A closure on a rectangular container for storing liquid, having a continuous folding line as the lower limitation of the closure and similar first and second faces, as well as third and fourth faces, the faces having a free edge and being connected with each other and protruding from the continuous folding line, the first and second faces both including folding lines extending from the ends of the continuous folding line on each face to the middle of the free edge of the faces, whereby the fourth face is sealingly connected with the first and second faces, and the third face is adapted to be folded over a remaining part of the first and second faces, whereby the length of the fourth face perpendicular to the continuous folding line is shorter than half of the distance between the corresponding opposite sides of the container, thereby providing an air opening to the interior of the container between the free edge of the fourth face and inwardly protruding peaks of the first and second faces, the free edge of t