Method for making container lid fitting

Claim 1

A CONTINUOUS METHOD OF PROVIDING A PROGRESSION OF FILED AND COSED-OFF CONTAINER ASSEMBLIES WHICH COMPRISES, SUCCESSIVELY BLOW-FORMING OPEN-MOUTH RESIN CONTAINERS FROM EXPANDED RESIN MATERIALS, SUCCESSIVELY FILLING EACH CONTAINER WITH A SUITABLE MATERIAL UP TO BUT BELOW A LIP EDGE OF THE OPEN MOUTH THEREOF, SUCCESSIVELY SOMEWHAT LOOSELY PLACING A CLOSURE LID WITHIN THE OPEN MOUTH OF EACH CONTAINER TO RESET ON ITS UNDERSIDE UPON THE MATERIAL; AND WHILE EMPOLYING THE MATERIAL TO SUPPORT THE LID IN POSITION WITHIN THE CONTAINER, SUCCESSIVELY APPLYING A LOCALIZED HEAT ABOUT THE OPEN MOUTH WALL AREA OF EACH CONTAINER TO EXPAND THE RESIN MATERIAL IN SUCH LOCALIZED WALL AREA, WITHOUT THE APPLICATION OF AN EXTERNAL DEFORMING PRESSURE AND WITHOUT CONFINING TO THE LOCALIZED WALL AREA THICKENING THE RESIN MATERIAL IN SUCH HEATED LOCALIZED WALL AREA AND INWARDLY-DEFORMING IT FROM THE CLOSURE LID TOWARD THE LIP EDGE, AND COOLING THE HEATED LOCALIZED WALL AREA TO SECURELY SEAL AND LOCK THE CLOSURE LID IN POSITION WITHIN THE CONTAINER AND UPON THE MATERIAL CONTAINED THEREIN.