It is used to pack food products and made of 100% virgin materials and meet FDA, USDA specification.
Three side seal bag and center seal bag has multi layer steel metal aluminum foil laminated flooring surfaces which can protect food items from moisture and air.
These bags are available in stand up ponches and flat bottom pouches.
Different metarials used like PP, PE, PET, BOPP, Nylon, Foil, CPP etc. Materials need to choose as per need.