초록 ▼

Packages being produced on a form, fill and seal machine as provided with transverse zippers inserted thereinto through a fin seal gap. Pairs of fin sealing bars are separated by a gap to produce the fin seal gap. The fin seal gap is opened, perhaps by vacuum means, and a zipper probe inserts a zipp

Packages being produced on a form, fill and seal machine as provided with transverse zippers inserted thereinto through a fin seal gap. Pairs of fin sealing bars are separated by a gap to produce the fin seal gap. The fin seal gap is opened, perhaps by vacuum means, and a zipper probe inserts a zipper having a web into the tube of plastic sheet material being formed into bags. The web of the zipper is sealed to the plastic sheet material, and the zipper probe withdrawn from the tube. Cross seal jaws seal both transverse ends of the package, a knife separates each package from that previously made, and a fin gap sealer seals the fin seal gap to complete the manufacture.

대표청구항 ▼

A zipper for a reclosable bag or package, said zipper comprising: a male zipper profile and a female zipper profile; said male zipper profile having a male interlocking member, a web extending laterally therefrom; and said female zipper profile having a female interlocking member for snapping engage

A zipper for a reclosable bag or package, said zipper comprising: a male zipper profile and a female zipper profile; said male zipper profile having a male interlocking member, a web extending laterally therefrom; and said female zipper profile having a female interlocking member for snapping engagement with said male interlocking member, a web extending laterally therefrom in the same direction as that in which said web extends from said male interlocking member, wherein a zipper guiding rail extends from behind and in a direction opposite to at least one of said male and female interlocking members on said male and female zipper profiles.