Method and apparatus for forming double zipper bags

摘要

A method and apparatus for continuously forming and filling slider operated reclosable plastic bags two at a time. A base film of plastic bag making material is horizontally advanced in a longitudinal direction and product is loaded onto the base film in two lines. First and second continuous slider operated zippers are then applied onto the base film between the lines of product and a cover film is placed over the base film covering the lines of product and the zippers. The composite is sealed to the base film along longitudinally extending lines disposed on sides of the product opposite to the two zippers and between the zippers. The base film is then sealed to the cover film along transverse seal sections on opposite sides of each row of product and the thus formed filled packages are separated by longitudinally cutting through the base film between the zippers and cutting through the transverse seal sections.