Apparatus for applying reclosable fasteners to a web of film

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 turret;
• and
• a 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;
• a label mechanism downstream of said zipper applying station for marking onto said web at any of said zipper positions which do not have a zipper applied thereto;
• and
• a sensing device for sensing the lack of presence of a zipper in a zipper-holding-position and communicating a signal to said label mechanism to label said web at a corresponding zipper position.

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;
• and
• a 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.