Ab Akerlund & Rausing

Lars-Eric Piltz

Folke Kiellarson

Bo T Quist

Bengt Nilsson

Siwer Mansson

Jan-Bertil Jeppsson

A method for manufacturing retortable cans is taught which includes the step of cable extruding a tube of plastic. Subsequently, a substantially gas-tight material is laminated to the outside of the tube and a plastic layer is laminated to the layer of substantially gas-tight material. Preferably, the gas-tight material comprises a metallic foil.

Method of manufacturing containers

An opening device is taught for packages comprising a substantially rigid outer wall portion and an inner layer of substantially gas-tight material (preferably a metallic foil), wherein the outer wall portion includes a first tearing notch defining an opening and a second tearing notch defining a grip tongue. The outer wall and the inner wall being interconnected substantially over their total surfaces facing each other with said outer wall portion and said inner layer being separated within an area substantially under said grip tongue. Preferably, the grip tongue is located completely within the opening defined by said first tearing notch.

Tear opening device for containers

A method for manufacturing an opening device for a package is disclosed. The opening device comprises an outer wall portion an an inner layer of substantially gas-tight material, the outer wall portion including a first tearing notch defining an opening and a second tearing notch defining a grip tongue, and the outer wall and the inner layer being interconnected substantially over their total surfaces facing each other with the outer wall portion and the inner layer being separated within an area substantially under the grip tongue. The method comprises the steps of coating the inner layer with an adhesion preventing coating within an area corresponding to said grip tongue, and connecting the inner layer to the substantially rigid outer wall portion.

Method of making tear opening devices for containers

A closure is provided and includes a sealing member and a cover for sealing and closing a container opening. The sealing member is sealed to the inner and outer walls of the container, and in one embodiment, an annular, ring-shaped element is provided for supporting the sealing member on the inside surface of the cover. In all embodiments, the cover includes a flange sealed to the external wall of the container, with the flange including a line of perforations forming a tear strip for removing the cover from the container. In the preferred embodiment, the removal of the cover causes the ring-shaped element to penetrate the sealing member and to form an annular opening in the sealing member so that the contents may be smoothly poured from the container.

Growing community of inventors

Dalby, Sweden

Lars-Eric Piltz