초록

A compact form-fill-seal machine for producing sealed cups and other sealed package structures, including dispenser packages for flowable substances having a fault line extending over a stress concentrating protrusion member.

대표청구항 ▼

A machine for automatically simultaneously producing a predetermined number of filled and sealed finished packages, including: pneumatically driven adjustable indexing drive means driving a main shaft member; sprocket means mounted to said main shaft engaging and adapted to intermittently advance an

A machine for automatically simultaneously producing a predetermined number of filled and sealed finished packages, including: pneumatically driven adjustable indexing drive means driving a main shaft member; sprocket means mounted to said main shaft engaging and adapted to intermittently advance and rest a pair of web transporting roller chains in response to movement of said main shaft; said web transporting roller chains including a series of upstanding pin members; rotary impaler cylinder means driven by said roller chains; roller means transporting a bottom thermoformable web material from a supply roll to said impaler cylinder, said impaler cylinder impaling each of the opposed lateral edges of said bottom web onto said roller chain pin members; means intermittently indexing said bottom web material to a heating station where said web is heated to thermoformability; means intermittently indexing said heated web to a forming station, said forming station including retractable forming die means forming a series of cup-like pockets in said bottom web; means intermittently indexing the formed bottom web to a filler station, said filler station including means filling each of said cup-like pockets with an equal amount of a product supplied to said filler station; driven roller means simultaneously advancing a thermoformable top web material in timed sequence with the intermittent advance, forming and filling of said bottom web member; said top web driven roller means transporting said top web into substantially parallel closely adjacent proximity to said bottom web after the cup-like pockets formed therein are filled; means intermittently indexing both said bottom web and said top web together to a sealing station, said sealing station including retractable heat sealing die and clamping means heat sealing the top and bottom webs together; means intermittently indexing said sealed top and bottom web members to a punch station, said station including a series of punch dies which punch rounded openings in the sealed web members at the location of the corners of the individual packages to be formed; means intermittently indexing and pulling said sealed top and bottom web members to a longitudinal cutting station wherein knife means slit said top and bottom web members along first opposed sides of said cup-like pockets and adjacent the pin engaging edge portions of said bottom web; transverse cutting means slitting said top and bottom web members along second opposed sides of said cup-like pockets to thereby separate the individual finished packages from one another; means transporting said finished packages away from said machine; and take up roller means removing the bottom web trim from said roller chain pins.