Containers cold-formed from plastic and metal laminate

Claim 1

IN A LAMINATED CONTAINER OF THE TYPE INCLUDING A CONTAINER BODY TERMINATING IN ANINTEGRAL BOTTOM WALL, SAID CONTAINER BODY BEING FORMED FROM AT LEAST TWO LAMINATED SHEETS OF MATERIAL, SAID CONTAINER BODY BEING OF A DEFINITE AND STABLE SHAPE AND VOLUME AT ROOM TEMPERATURE AND ATMOSPHERIC PRESSURE, A FIRST OF SAID SHEETS BEING ADAPTED FOR THE DIRECT APPLICATION OF HEAT AGAINST A SURFACE THEREOF AND A SECOND OF SAID SHEETS BEING ADAPTED TO PREVENT THE DIRECT APPLICATION OF HEAT TO THE SURFACE OF THE FIRST OF SAID SHEETS; THE IMPROVEMENT COMPRISING: CONSTRUCTING SAID FIRST SHEET FROM POLYMERIC PLASTIC MATERIAL AND SAID SECOND SHEET FROM RELATIVELY IMPERMEABLE METALLIC MATERIAL WHEREBY THE SECOND SHEET PERVENTS THE DIRECT APPLICATION OF HEAT AGAINST A SURFACE OF THE PLASTIC MATERIAL AND A RELATIVE IMPERMEABILITY OF THE SECOND SHEET PREVENTS OXYGEN PERMEATION OF THE PLASTIC MATERIAL AT TEMPERATURES IN EXCESS OF THE MELTING-TEMPERATURE RANGE OF SAID PLASTIC MATERIAL, THE PLASTIC MATERIAL HAVING A PREDETERMINED MELTING-TEMPERATURE RANGE, SAID LAMINATED CONTAINER BODY MAINTAINING ITS INTEGRITY AND DIMENSIONAL STABILITY AT TEMPERATURES SUBSTANTIALLY IN EXCESS OF THE MELTING-TEMPERATURE RANGE OF THE PLASTIC MATERIAL, THE THICKNESS OF THE FIRST SHEET IS BETWEEN THE RANGE OF .002 TO .02 INCH AND THE THICKNESS OF THE SECOND SHEET IS BETWEEN THE RANGE OF .0003-.015 INCH.