Using a contoured head for sealing lidding stock

Details Using a contoured head for sealing lidding stock Using a contoured head for sealing lidding stock

1989-07-03

1990-11-13

Dawson, Robert A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156220, 1562739, 1565834, 220359, 2291231, B32B 3120

Patent

active

049699652

ABSTRACT:
A method and plate structure for peelably sealing lidding stock to a sealing flange of a container. The plate structure has a face portion that is configured in cross section to contact the lidding stock and force the same against the flange surface without cutting the sealing layer of the stock and in a manner that indents the stock and flange, and retains sealing material in a sealing area to effect a good but peelable seal between the lidding stock and flange. The face portion includes an indentor made of a material of high thermal conductivity relative to the material of the remainder of the plate structure.

REFERENCES:
patent: 3701699 (1972-10-01), Jackson
patent: 4689099 (1987-08-01), Ito et al.
patent: 4761197 (1988-08-01), Christine et al.

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