Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Presses or press platen structures – per se
Patent
1982-04-26
1988-04-05
Czaja, Donald E.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Presses or press platen structures, per se
53450, 53451, 493197, 493202, 493203, B30B 1534
Patent
active
047356758
ABSTRACT:
The present invention is used to heat seal seams, and the like, of item holding means such as plastic bags holding loose fill product like beans, hard candy, pretzels, potato chips, etc. The heating station of the present invention has at least two independently controlled heating positions in each half of a pair of jaws and each heating position is heat insulated from the other and each respectively can provide different amounts of heat to material coming in contact therewith. Accordingly, the bonded areas of item holding means can be manipulated to control local package characteristics, i.e., sealed to have a stronger bond strength at one location that at another location, adjust tear properties to suit marketing methods (such as hole punched top seals) and to control seal integrity.
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patent: 4288965 (1981-09-01), James
Athena Controls Inc.
Cashion Jr. Merrell C.
Cleaver William E.
Czaja Donald E.
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