The present invention relates to a vacuum packaging machine for vacuum sealing by putting food into a vacuum packaging bag, removing air from the vacuum packaging bag, and sealing an open portion of the vacuum packaging bag, and a system for controlling the vacuum packaging machine. The vacuum packaging machine includes a housing (10), a hood (20) and a separation unit (60). The housing (10) has a cover (11b) with a rubber packing (12) attached to a border thereof and an outlet (110b) formed therein, and a heater (16) for sealing a vacuum packaging bag. The hood (20) is hingedly connected to the housing (10) to selectively open and close a top of the housing (10), and has a rubber packing (22). The separation unit (60) communicates with the outlet (110b) through a communicating member and is connected to a vacuum pump. The vacuum packaging machine forms a vacuum through the vacuum pump when the rubber packings (22 and 12) of both the hood (20) and the housing (10) come into contact with each other. The separation unit (60) communicates with a filter means (80) having a filter casing (82) for filtering impurities or oil contained in the vacuum packaging bag, a filter (84) inserted into the filter casing (82) to remove the impurities, and a filter casing cover (86).

A packaging mechanism has a loading bed moveable between a loading position and a second position. A plate-like member is moveable with respect to the loading bed between a retracted position for loading and a second position for package sealing. The plate-like member has a hinged portion. A sealing member is positioned at an end of the hinged portion. The sealing member seals a wrap about a sequenced group of product to form a package when the plate-like member is positioned over the loading bed. A clamping, cutting and serrate mechanism is positioned proximate to the loading bed when the loading bed is in the first position. The clamping, cutting and serrate mechanism clamps, cuts and serrates the wrap. A method of packaging is also provided.

A system for sealing thermoplastic film includes one or more bag sealing units, each comprising a lower vacuum platen and a vacuum chamber cover adapted for sealing engagement on the platen to form a vacuum chamber. A sealing bar assembly includes a sealing bar designed for constant heated operation and a pair of cooling plates which function as heat sinks. The sealing bar assembly is pneumatically reciprocated between a raised, disengaged position and a lowered position with the sealing bar engaging the neck of a bag for hermetically sealing same. The cooling plates clamp the bag neck against a sealing support assembly. A method of sealing a thermoplastic film bag includes the steps of placing a packaging object in a thermoplastic bag and placing the bag on a cradle with the bag neck extending over a bag support assembly. A vacuum chamber cover is placed on the platen and evacuated to form a vacuum chamber. A sealing bar assembly melds the thermoplastic to form a sealed area across the bag neck. A cutoff knife blade severs the end of the bag beyond a sealed area, which extends across its neck.

A system for sealing thermoplastic film includes one or more bag sealing units, each comprising a lower vacuum platen and a vacuum chamber cover adapted for sealing engagement on the platen to form a vacuum chamber. A sealing bar assembly includes a sealing bar designed for constant heated operation and a pair of cooling plates which function as heat sinks. The sealing bar assembly is pneumatically reciprocated between a raised, disengaged position and a lowered position with the sealing bar engaging the neck of a bag for hermetically sealing same. The cooling plates clamp the bag neck against a sealing support assembly. A method of sealing a thermoplastic film bag includes the steps of placing a packaging object in a thermoplastic bag and placing the bag on a cradle with the bag neck extending over a bag support assembly. Avacuum chamber cover is placed on the platen and evacuated to form a vacuum chamber. A sealing bar assembly melds the thermoplastic to form a sealed area across the bag neck. A cutoff knife blade severs the end of the bag beyond a sealed area, which extends across its neck.

An apparatus is provided for packaging and taking away packaged sequenced product such as mail pieces. The apparatus includes a packaging device having an output end, and adapted to package sequenced products. A clamping device is adjacent to the output end of the packaging device. A conveying system is downstream from the clamping device. The conveying system incrementally moves a drop off tray. The clamping device holds one of a plurality of packaged sequenced products such that the drop off tray is in a position to stack multiple packaged sequenced products of the plurality of packaged sequenced products into the drop off tray. In one embodiment, this allows the packages not to hit the drop off tray during the stacking process. A method of packaging is also provided.