Sealing "hood" has anti-seal function

Curwood, Inc. (USA), Zip-Pak, an ITW Company (USA), Plumrose USA Inc. (USA) and CFS North America (US) Plumrose/Danola Packaging (HFFS Slider Package) with Zip-Pak Technology A simple and easy way to get products. The sealing “cover” around the zipper has an anti-shut-off function, and when the cover is completely removed, the user can use the zipper without any hindrance. This package uses an extruded PET film technology that allows one to maintain a good shape and stiffness while tearing the film cleanly. It is produced by three thermoforming/filling/sealing equipment.