Air-tight box forming a container for various products
AssigneePlastigord "Plastiques du Perigord"
InventorAlbert H. F. Mazoin
Life of this patent
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Abstract
The box forming a container comprises a body forming a flange at a distance of the upper edge. A lid encases the body of the box and has a flange which is soldered typically through ultra-sounds, the soldered area extending not exactly up to breakage grooves.
Claims19
A box forming a container for various products, particularly alimentary products, comprising a body forming a peripheral flange and a lid, said lid having peripheral portion bearing on the peripheral flange and soldered to said peripheral flange on a soldered area, wherein the soldered area extends over a width smaller than the width of the peripheral flange, and means, provided on at least one of said peripheral flange and said peripheral portion of the lid, for breaking at least a part of the peripheral portion of said lid away from the container periphery, said breaking means comprising a groove extending about one of the peripheral flange and the peripheral portion of the lid, said soldered area being formed along the outer periphery of said groove.
Dependencies are inferred from the claim text.