| 摘要 |
<p>An apparatus for applying strip fastener elements or zippers to web material includes an unwind stand (24) holding a roll of film material (26), an infeed dancer arrangement of rollers (36), a zipper apparatus (200) which conditions zipper material, cuts zippers and delivers zippers to a zipper feed apparatus. The zipper feed apparatus (200) loads zippers into a sealing platen (326) of a rotating turret (308). The rotating turret carries the zippers successively to a position adjacent a surface of the film and a seal bar (352) presses the film to successive zippers to seal the zippers thereto while a new zipper is being received in a sealing platen of the turret at a loading station at a rotational position at a distance from the sealing station. The film with zippers attached is drawn downstream of the turret to a rewind dancer roll assembly (501) and thereafter to a rewind stand (600) for winding into a roll of zippered film (602).</p> |
