Machine for sealing cups with film

Details Machine for sealing cups with film Machine for sealing cups with film

1989-12-22

1991-02-05

Spruill, Robert L.

Package making

Closing packages and filled receptacles

Separate closure applying

53296, 53329, 83554, B65B 728, B26D 508

Patent

active

049893939

ABSTRACT:
A web of heat-sealable film is advanced in overlying relation with filled cups to a sealing station where both the web and the cups dwell momentarily. During the dwell period, sealing heads advance downwardly and seal the web to the upper end portions of the cups. The heads are advanced downwardly with a two-step stroke, the heads first advancing in unision with a carriage and then being individually advanced by individual pneumatic actuators which are mounted on the carriage. After being sealed, the cups are indexed to a cutting station where annular knives are advanced downwardly to cut through the web and leave each cup with a circular sealing membrane. The knives are advanced with a two-step stroke similar to that of the sealing head.

REFERENCES:
patent: 3354604 (1967-11-01), Amberg et al.
patent: 3587372 (1971-06-01), Prew
patent: 3712023 (1973-01-01), Bryan, Jr. et al.
patent: 3792567 (1974-02-01), Balcome
patent: 3838550 (1974-10-01), Mueller
patent: 3927506 (1975-12-01), Abd-Alla
patent: 4176507 (1979-12-01), Mancini

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