Swiss Aluminium Ltd.

Ciba-geigy Corporation

Oldrich Stanek

Werner Festag

Hans-Ueli Muller

Siegfried Bloeck

Peter Bahler

A process for manufacturing a lid having at least one outlet opening wherein a closure strip is sealed onto the lid covering the outlet opening comprising heating the closure strip to a temperature range of approximately 115.degree.-170.degree. C. within 10-15 seconds prior to sealing the closure strip onto the lid.

Process of heat sealing a closure strip to a can lid

Lids made of aluminum alloys or ferrous material such as tin plate or tin free steel having at least one stamped out pouring hole and, if desired, at least one hole for air have hot sealed pull-off strips covering the said holes. On the inner side of the lids the region around the holes is pre-treated with an adhesive primer and then coated with a plastisol layer thus providing the cut edges at the holes with protection against attack by the contents of the can.

Process for manufacturing lids with a closure strip covering at least

A closure system for containers, particularly semi-rigid containers has inlet- and outlet opening which can be varied in size, and can be covered by an adhesive strip. A tongue is formed by an essentially U-shaped cut in the container wall and may be raised up for opening the filling opening of the container, and on the innermost side of the container wall, on the area beyond the hinge line of the tongue, a piece of foil is adhesively fixed or sealed on which--on opening the closure system by tearing further the tongue cut line at its ends to form a larger emptying opening--is suitable for guiding the tear along its edge and thus determines the course of the tear lines.

Closure system for containers, in particular for non-returnable

A non-returnable container is made from at least two dish-shaped parts which have outward facing flanges joined together by a sealed seam and is intended for holding liquid and/or pasty, granular and/or powdery substances. The flanges of the dish-shaped parts, which are made of a metal-plastic composite are joined together by means of at least one sealed seam and are held in a bent position by means of a holding device.

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Schaffhausen, Switzerland

Oldrich Stanek