Package making – Methods – Forming a cover adjunct or application of a cover adjunct to...
Reexamination Certificate
2005-09-06
2005-09-06
Huynh, Louis (Department: 3721)
Package making
Methods
Forming a cover adjunct or application of a cover adjunct to...
C053S476000
Reexamination Certificate
active
06938395
ABSTRACT:
An apparatus for closing a slider-operated zipper on a moving filled package, comprising means for performing the following steps: conveying a package forward in a straight line; guiding a slider on a zippered portion of the package through a channel as the package moves forward; blocking forward movement of the slider at a predetermined position inside the channel as the package continues to move forward; and releasing the slider when the force being exerted by the slider in the forward direction reaches a level substantially equal to a predetermined threshold. This apparatus can be employed in association with a continuous band sealing apparatus. The means for blocking forward movement of the slider at a predetermined position inside the channel are a pair of spring-loaded plungers, e.g., ball plungers. If the slider end stop is weak, the slider will be pulled off the advancing package and will fall onto an ejection ramp.
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Crevier Donald L.
Knight Nigel D.
Huynh Louis
Illinois Tool Works Inc.
Ostrager Chong Flaherty & Broitman P,C
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