Black Coffee Bean Sacks Pouch Packaging Bag use Matte BOPP+PET aluminum foil+food-grade PE,Three-tier design make it stronger, block light, keeps coffee from odor or moisture,ensure the taste of coffee or powder in the bag, and can also be transported over long distances.

Keep Coffee Beans Fresh:The coffee bean sacks one-way air valve keeps the coffee beans and roasted coffee fresh. Excess gas flows from the inside to the outside without returning gas, keeping the food in the coffee pouch packaging fresh.

Black Coffee Bag Operation Instructions: 1.Put the items to be stored 2.Must use sealing machine(not include) to seal the top of the bag（occasionally not completely sealed,can turn the bag over,heat seal again） 3.Squeeze out the air from the bag through the degassing valve.