US 7,017,796 B2 · Method of manufacturing paper packaging container and paper packaging container

Abstract

A paper packaging container is obtained by tube forming with a longitudinal seal of web-shaped packaging material. The package is filled with liquid food, and a transverse seal of the tube packaging material is made to form a pillow-shaped preliminary shape container. The preliminary shape container is then cut, and a final shape container having a top, side walls and a bottom is formed by folding the packaging material along crease lines. Flaps are formed during the forming of the top of the container and are folded outwardly and downwardly onto side wall faces of the container. The top of the container is formed as a shed roof shape. The method of folding the flaps outwardly from the top of the container and the resulting shaped container allows attachment of a large spout with a wide mouth on the top, while achieving high speed manufacturability without subjecting the paper packaging material to high stresses.

Claims20

Dependent claims

A method of manufacturing a paper packaging container comprises:

forming a web-shaped packaging material having crease lines into a tube with a longitudinal seal,
filling contents in said tube-formed packaging material,
forming said tube packaging material as a pillow-shaped preliminary shape container with a transverse seal in a transverse direction,
cutting an individual preliminary shape container,
forming a final shape container having a top, side walls and a bottom by folding said packaging material along said crease lines, wherein during said forming of the final shape, a body part of said preliminary shape container is pushed to inflate a part for said top and then said preliminary shape container is folded along said crease lines with flaps formed during forming of the top each being folded along an axis of slanted top ridgelines of said container on faces of said side walls to form said top as a shed roof shape.

2 more elements

A method of manufacturing a paper packaging container, comprising:

providing web-shaped packaging material with crease lines that define panels of a packaging container;
forming said web-shaped packaging material into a tube-shaped container by sealing said packaging material along a longitudinal seal;
filling contents into said tube-shaped container;
forming said tube-shaped container into a preliminary pillow-shape by forming a transverse seal in said packaging material;
cutting said tube-shaped container into one or more individual containers having said preliminary shape;
forming each of said one or more individual containers having a preliminary shape into a container having a final shape with a top, sides and a bottom by folding said packaging material along said crease lines, a part of said container being pushed to cause said packaging material in the top of said container to move outwardly along said crease lines, with flaps being formed by crease lines in the top of said container, and said flaps being folded outwardly and downwardly onto said sides of said container, with one of said crease lines in the top of said container along which a flap is folded forming a slanted ridgeline of the top of the container, with the top of the container being in the shape of a shed roof.

3 more elements

A method of manufacturing a paper packaging container, comprising:

providing web-shaped packaging material with crease lines that define panels of a packaging container;
forming said web-shaped packaging material into a tube-shaped container by sealing said packaging material along a longitudinal seal;
filling contents into said tube-shaped container;
forming said tube-shaped container into a preliminary pillow-shape by forming a transverse seal in said packaging material;
cutting said tube-shaped container into one or more individual containers having said preliminary shape;
forming each of said one or more individual containers having a preliminary shape into a container having a final shape with a top panel, front panel, back panel, side panels, a bottom panel and top and bottom flaps, by folding said packaging material along said crease lines, a part of said container being pushed to cause said packaging material in a top of said container to move outwardly along said crease lines, with said top flaps being formed by crease lines on both sides of the top panel of said container, and said top flaps being folded outwardly and downwardly onto said side panels of said container such that said top panel is slanted at an angle greater than 90 degrees relative to said front panel, and said top flaps being adhered to said side panels of said container.

3 more elements

Dependencies are inferred from the claim text.

Method of manufacturing paper packaging container and paper packaging container

Life of this patent

Method of manufacturing paper packaging container and paper packaging container

Life of this patent

Abstract

Claims20