Manufacturing container or tube from paper; or other manufacturi – Securing
Reexamination Certificate
2007-05-01
2007-05-01
Tawfik, Sameh H. (Department: 3721)
Manufacturing container or tube from paper; or other manufacturi
Securing
C493S213000, C493S214000, C493S927000
Reexamination Certificate
active
10964258
ABSTRACT:
A method of making slider-actuated string-zippered packages. The method can be applied on a form-fill-seal machine or a machine that makes packages without filling, and involves transverse application of string zipper material on packaging film. One disclosed method comprises the following steps: (a) interlocking respective lengths of first and second flangeless zipper strips to each other; (b) advancing a first web in a machine direction; (c) joining a back of at least a major portion of the length of first flangeless zipper strip to the first web of packaging film along a zone that is oriented transverse to the machine direction; (d) laying a second web over the first web with the major portion of the length of first flangeless zipper strip and a major portion the length of second flangeless zipper strip disposed between the first and second webs; (e) joining a back of at least the major portion of the length of second flangeless zipper strip to the second web; (f) joining the second web to the first web to form a pocket having a mouth that is closed to the extent the major portions of the lengths of first and second flangeless zipper strips are interlocked; (g) cutting the first and second webs along respective lines close to the lengths of first and second flangeless zipper strips respectively; and (h) inserting a slider on the lengths of first and second flangeless zipper strips with the first and second webs joined thereto.
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Illinois Tool Works Inc.
Ostrager Chong & Flaherty & Broitman P.C.
Tawfik Sameh H.
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