Seal bars having asymmetric surface features

Details Seal bars having asymmetric surface features Seal bars having asymmetric surface features

1991-03-05

1991-12-31

Culver, Horace M.

Package making

Progressively seamed cover web or web folds

With closing of web between package units

533742, 533745, 533746, 533748, 156581, 1565831, B65B 5130, B65B 5114

Patent

active

050760408

ABSTRACT:
A seal for a pouch packaging machine as, for instance, a form, fill and seal packaging machine, includes first and second seal bars each having a sealing surface thereon. The seal bars are located on the machine in positions locating the sealing surfaces on the respective seal bars opposed to one another. In cross section the respective sealing surfaces on the seal bars each include a plurality of concave and convex surface features. The convex surface features have a radius of curvature that is less than the radius of curvature of the concave surface features thus rendering the sealing surfaces asymmetrical.

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