Package making – With contents treating – Vacuum or inert atmosphere
Reexamination Certificate
2007-09-25
2007-09-25
Gerrity, Stephen F. (Department: 3721)
Package making
With contents treating
Vacuum or inert atmosphere
C053S329300
Reexamination Certificate
active
11354655
ABSTRACT:
An improved sealing gasket for a vacuum-sealing station of a vacuum packaging machine which is made such that the outer perimetric portion thereof is made of a greater hardness than the rest of the sealing gasket, whereby the sealing heat-elements of a reciprocal heating element only substantially contacts against the softer material of the sealing gasket, allowing this softer material to conform to the uneven or non-level condition of the heating element. In the preferred embodiment, the outer-most perimeter of the sealing gasket is made of a greater hardness in the approximate durometer-hardness range of between 60-85 Shore A, while the remainder of sealing gasket is made of less hardness in the approximate durometer-hardness range of between 30-50 Shore A.
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