Method and apparatus for vacuum packaging

Claim 1

THE METHOD OF AIR EVACUATING PRODUCT-FILLED CONTAINERS CHARACTERIZED AS HAVING A PAIR OF OPPOSED SIDE WALL FLARING LIPS AT THE MOUTH THEREOF ADAPTED FOR REGISTERING WITH AN AIR EVACUATOR DEVICE WHICH HAS CO-ACTING AIR PASSAGES CONNECTABLE WITH A SOURCE OF VACUUM, COMPRISING THE STEPS OF; (A) SPREADING SAID FLARING LIPS APART, (B) DIRECTING SAID SPREAD-APART LIPS OVER A PAIR OF OPPOSED OPENLY-SPACED PRESSURE RESISTING FLEXIBLE MOUTH SUPPORT MEMBERS WITH THE BASE OF SAID LIPS IN REGISTER WITH SAID AIR EVACUATOR DEVICE, (C) OPENING SAID VACUUM SOURCE TO SAID DEVICE, THE AIR SUCTION EFFECT THEREOF INSTANTLY DEVELOPING A HIGH VACUUM IN SAID CONTAINER CAUSING THE ATMOSPHERIC PRESSURE TO COMPRESS SAID CONTAINER WALLS AND TO COMPRESS SAID LIPS CAUSING SAID MOUTH SUPPORT MEMBERS TO YIELD AND FLATLY REGISTER SAID LIPS IN TEMPORARY VACUUM SEALED RELATIONSHIP UPON SELECTIVE AIR PASSAGES OF COINCIDING WALL PORTIONS OF SAID DEVICE, (D) COMPLETING THE EVACUATION OF SAID CONTAINER. (E) SEALING SAID MOUTH OF SAID EVACUATED CONTAINER IN HERMETIC SEAM FORMING RELATIONSHIP.