초록 ▼

An apparatus for applying strip fastener elements or zippers to web material includes an unwind stand holding a roll of film material, an infeed dancer arrangement of rollers, a zipper apparatus which conditions zipper material, cuts zippers and delivers zippers to a zipper feed apparatus. The zippe

An apparatus for applying strip fastener elements or zippers to web material includes an unwind stand holding a roll of film material, an infeed dancer arrangement of rollers, a zipper apparatus which conditions zipper material, cuts zippers and delivers zippers to a zipper feed apparatus. The zipper feed apparatus loads zippers into a sealing platen of a rotating turret. The rotating turret carries the zippers successively to a position adjacent a surface of the film and a seal bar 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 and thereafter to a rewind stand for winding into a roll of zippered film.

대표청구항 ▼

[ The invention claimed is:] [19.] An apparatus for applying zippers to a web, comprising:a draw roll for pulling a length of web past a zipper applying station;a turret located at said zipper applying station and arranged adjacent said web, said turret having an outer surface thereof with zipper-ho

[ The invention claimed is:] [19.] An apparatus for applying zippers to a web, comprising:a draw roll for pulling a length of web past a zipper applying station;a turret located at said zipper applying station and arranged adjacent said web, said turret having an outer surface thereof with zipper-holding-positions spaced apart around said outer surface, said turret driven in rotation to position said zipper-holding-positions across a surface of said web spaced apart at zipper positions along said length of said web;a zipper placing mechanism for placing successive zippers onto said zipper-holding-positions of said rotating turret; anda zipper feed mechanism for indexing a length of zipper material from a supply of zipper material into said zipper placing mechanism, said length of zipper material corresponding to one zipper;wherein said zipper feed mechanism is configured to index a zipper material which comprises interlocked male and female profile fastener strips each carried on a respective one film flange strip.