Bag & Pouch Converter of Cellophane, Polypropylene & Laminated Barrier Films. Back Seam Bags, Three Side Seal Pouches, Chevron Medical Pouches and Stand-Up Bottom Pouches with Zippers. Materials Provide Protection Against Water Vapor Transmission and O2 Permeability. Custom Bag & Pouch Converter of Cellophane, Polypropylene & Laminated Barrier Films; Bags Up to 11 In; X 39 In., Crimp or Folded Bottom, Lap or Fin Back Seals, Thumb Notches, Hole Punches, Gussets; Pouches Up to 36 In; X 90 In., Hole ...