초록 ▼

A method of forming a reclosable gusseted bag is disclosed wherein a carrier tape webs having discrete sections of mating profile separated by profile free sections is introduced between two bag walls and sealed to the bag wall tops or adjacent thereto. The carrier tape webs are sealed to the bag wa

A method of forming a reclosable gusseted bag is disclosed wherein a carrier tape webs having discrete sections of mating profile separated by profile free sections is introduced between two bag walls and sealed to the bag wall tops or adjacent thereto. The carrier tape webs are sealed to the bag wall films and cross seals are made in the bag wall films and carrier tape webs through the profile free sections. Side gussets are formed by pushing a part of the bag walls and the profile free sections of the carrier tape web between the profiles so that when the bag is closed a part of the gussets are captured between the mated profiles. A bottom gusset is formed in the bag bottom and a peel seal may be provided below the profiles.

대표청구항 ▼

1. A method of forming a reclosable gusseted bag comprising the steps of: providing first and second carrier webs with discrete, mating zipper profile sections, said sections being separated from each other by zipper free sections of carrier web; with said profile sections disengaged from one an

1. A method of forming a reclosable gusseted bag comprising the steps of: providing first and second carrier webs with discrete, mating zipper profile sections, said sections being separated from each other by zipper free sections of carrier web; with said profile sections disengaged from one another, attaching said first and second carrier webs respectively to the tops of first and second bag wall films; forming a bottom gusset in said bag; cross sealing said first and second bag wall films, said first and second carrier webs through said zipper free sections of carrier web; cutting transversely through said cross seals to form a bag; and forming side gussets by pushing said zipper free sections of carrier web between said mating zipper sections. 2. The method in accordance with claim 1 wherein said first and second carrier webs are attached to top edges of said first and second bag wall films. 3. The method in accordance with claim 1 wherein said first and second bag wall films are formed from one piece, folded longitudinally and said bottom gusset is formed by reversing said longitudinal fold. 4. The method in accordance with claim 1 wherein said first and second bag wall films are separately formed and further comprising: attaching a bag bottom web between said first and second bag wall film bottoms, and folding said bag bottom web to form said bottom gusset. 5. The method in accordance with claim 1 wherein said first and second carrier webs are provided with said mating zipper profile sections interlocked and further comprising disengaging said profile sections prior to forming said cross seal. 6. The method in accordance with claim 1 wherein discrete windows are cut into said first and second bag wall films and said first and second carrier webs are attached to said first and second bag wall films so that their zipper free sections overlie said windows. 7. The method in accordance with claim 1 comprising the further step of providing a peel seal below said mating zipper profile sections. 8. The method in accordance with claim 1 wherein said formed reclosable bag is filled and said profile sections are interlocked capturing said profile free sections therebetween.