Cebal

Pechiney Recherche

Rene Layre

Alain Jupin

Serge Terroni

Pierre Brugerolle

Richard Bosc

The invention relates to lids of easy-opening cans for perishable foodstuffs, and a method of obtaining them. These lids are composed of a metal foil and a plastics film, the metal foil having a mechanical non-traversing pre-incision corresponding to a tearing line and the thermo-shrinkable plastics film having a continuous depression situated opposite the mechanical pre-incision. The pre-incision and the depression, obtained by the action of heat, makes it possible to avoid the defects known as 'feathering' and the plastics film is less expensive and more resistant to corrosion than is conventional lacquer.

Easy-open metal-plastic laminate can lid

The invention relates to a strip or portion of a strip for deep drawing or drawing and ironing comprising a metallic layer carrying on one surface a surface coating of plastics material and on its other surface a coat of varnish characterized in that: the metallic layer is of aluminum alloy with each surface having a coating of anodic or chemical conversion oxide 20 to 80 nm thick; and the coat of varnish contains a solid lubricant consisting of particles which are harder than the varnish and less hard than the shaping tool or tools, which particles are of an average diameter greater than the thickness of the said coat after firing. The invention also has an object the use of this strip to produce various hollow bodies or containers, particularly with a height:diameter ratio in excess of 2.5 and for producing aerosol or pump distributors. Thus transformed, the strip according to the invention can be applied to various fields such as those of cleaning products, hygiene, foodstuffs, cosmetics and pharmaceuticals.

Growing community of inventors

Grenoble, France

Rene Layre