| 摘要 |
A method for dual manufacture of reclosable packages on a horizontal-form, vertical fill machine. The method comprising the following steps: extending a web of bag making film under tension in a machine direction; joining one zipper tape to the web along a first zone of joinder generally aligned with the machine direction; joining another zipper tape to the web along a second zone of joinder generally parallel to the first zone of joinder and spaced apart therefrom; and folding the web in first, second and third mutually parallel zones extending in the machine direction. The first zone of folding is disposed between a first edge of the web and the one zipper tape, the second zone of folding is disposed between the two zipper tapes, and the third zone of folding is disposed between the other zipper tape and a second edge of the web. The resulting folded web with attached zippers has a generally W-shaped profile. The two halves of the W-shaped web are cross-sealed, filled, and then top-sealed to form respective chains of filled receptacles. The completed packages are then severed from the respective chains of receptacles.
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