Sealing device of packaging device

Details Sealing device of packaging device Sealing device of packaging device

1992-12-30

1994-10-11

Johnson, Linda B.

Package making

Closing packages and filled receptacles

Including provision for pleat of cover overhang

533778, 533873, 1565835, B65B 704, B65B 5118

Patent

active

053535723

ABSTRACT:
The total heating energy to be given to the folded parts of packages (i.e. box-like items) is changed within a short period of time in response to a variation of transferring speed of the box-like items. As the heater moving mechanisms are operated, each of the heater blocks is moved towards or away from the inside parts of each of the package conveying annular belts in synchronization with the transferring speed of the box-like items. The number of heated blocks abutting against the inside parts of each of the annular belts is varied in response to the transferring speed of the box-like items.

REFERENCES:
patent: 3157975 (1964-11-01), Altman
patent: 3829338 (1974-08-01), Hayasi et al.
patent: 4680073 (1987-07-01), Brunner et al.
patent: 4981006 (1991-01-01), Caenazzo et al.
patent: 4999970 (1991-03-01), Bamrungbhuet et al.
patent: 5005473 (1991-04-01), Ishigashi
patent: 5046258 (1991-09-01), Cahill et al.
patent: 5048260 (1991-09-01), Raymond et al.
patent: 5183525 (1993-02-01), Thomas

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