Ab Akerlund & Rausing

Folke Kiellarson

Lars-Eric Piltz

Bo T Quist

Bengt Nilsson

Siwer Mansson

Sven Roos

Thomas Quist

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

The invention concerns packaging a food product in an atmosphere of steam into a container one part of which is cupped, the cupping of the package being effected by means of steam. The invention also relates to an apparatus for carrying out the packaging method.

Growing community of inventors

Barseback, Sweden

Folke Kiellarson