초록 ▼

In a vertical form, fill, seal machine that produces liquid-filled stand-up pouches, a flat vertical fill tube is surrounded by an envelope of thermoplastic film that is closed along one longitudinal edge and open along the opposite longitudinal edge. A main drive assembly includes drive members tha

In a vertical form, fill, seal machine that produces liquid-filled stand-up pouches, a flat vertical fill tube is surrounded by an envelope of thermoplastic film that is closed along one longitudinal edge and open along the opposite longitudinal edge. A main drive assembly includes drive members that press opposite sides of the envelope against the flat fill tube. An auxiliary film drive assembly is responsive to film tension. Stand-up base cups are formed seriatim along the closed longitudinal edge of the envelope. Fitments are inserted seriatim into the open longitudinal edge, in correspondence with respective cups, and are sealed to the thermoplastic film, first by a spot-sealer and then by a top sealer. End seal/cut-off assemblies provide a seal transversely of the envelope that is bisected by a knife to release a leading pouch that has been formed, filled, and sealed. Prior to end sealing and cut-off, a predetermined quantity of liquid is dispensed from the bottom of the fill tube into a pouch next to the leading (just-filled) pouch. A deflater assembly evacuates and stabilizes a region of the envelope at which each end seal is formed.

대표청구항 ▼

[ The invention claimed is:] [1.] A vertical form, fill, seal machine for producing filled stand-up pouches, comprising:a vertical fill tube constructed to receive product from a product supply and to dispense a quantity of product from a lower portion of the fill tube;film supply apparatus construc

[ The invention claimed is:] [1.] A vertical form, fill, seal machine for producing filled stand-up pouches, comprising:a vertical fill tube constructed to receive product from a product supply and to dispense a quantity of product from a lower portion of the fill tube;film supply apparatus constructed to provide a vertical film envelope surrounding the fill tube;a drive assembly including a pair of drive members disposed at opposite sides of the envelope and constructed to press respective sides of the envelope against the fill tube;a base-former assembly constructed to transform a portion of the envelope adjacent to a first longitudinal edge thereof into a series of stand-up bases for respective pouches;a top sealer assembly constructed to provide top seals along portions of a second longitudinal edge of the envelope opposite to corresponding bases;an end sealer assembly constructed to provide seals at opposite side edges of each pouch being formed, extending between each top seal and a corresponding base, and to entrap a quantity of product dispensed from the fill tube into each pouch being formed; anda cut-off assembly constructed to separate each product-containing pouch from the envelope.