Sealing mechanism

Details Sealing mechanism Sealing mechanism

1997-03-03

1999-02-23

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Presses or press platen structures, per se

156 69, 156 731, 156358, 53477, B29C 6508

Patent

active

058739769

ABSTRACT:
A sealing mechanism for sealing thermoplastic-coated container sealing fins, including a movable sealing jaw and an oppositely disposed fixed sealing jaw. The sealing jaws have parallel, dead-ended grooves formed in the sealing surface thereof, wherein two adjacent grooves cross each other in an X-configuration at their longitudinal mid-point. Engagement of the inter-groove lands against heated outer sealing panels causes the thermoplastic to become molten and flow to the X-configuration area. When cooled, the concentrated thermoplastic serves to seal off the crevice between adjacent folded-over, inner panel segments of the container sealing fin.

REFERENCES:
patent: 3499808 (1970-03-01), Obeda
patent: 3886012 (1975-05-01), Slater
patent: 3912576 (1975-10-01), Braun
patent: 3971300 (1976-07-01), Bachner
patent: 4007671 (1977-02-01), Duncan
patent: 4572753 (1986-02-01), Bach
patent: 4767492 (1988-08-01), Fukusima et al.

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