| 摘要 |
An apparatus and method for engaging both profiles ( 18, 20 ) of an interlocked zipper ( 12 ) as the zipper or fastener strip is guided onto a supply of thermoplastic film ( 16 ) used to make a reclosable bag. A first interlocked profile ( 18 ) of the zipper is engaged by at least one roller ( 24, 26, 36, 38, 40, 42, 44 ) of the roller-type applicator ( 10 ). A disc ( 28 ) mechanically attached to an end section of at least one of the rollers engages a web ( 22 ) of the second interlocked profile ( 20 ) that extends beyond the width of a web of the first profile ( 18 ). By their attachment, the disc ( 28 ) and the roller move the profiles ( 18, 20 ) at the same speed so that the profiles remain aligned as they are moved through the zipper guide ( 14 ). The zipper ( 12 ) is then attached to a surface of the thermoplastic film ( 16 ) used to make the reclosable bag.
|
