Flat bottom bags, also known as block-bottom or quad-seal pouches, are box-shaped flexible bags with a fully sealed flat base that allows them to stand firmly on shelves. Made from multi-layer composites including PET/PE, aluminum foil, and kraft paper laminates, they provide superior barrier against moisture, oxygen, and light. The rigid rectangular shape offers excellent stackability and large printable surfaces on five panels. Optional features include degassing valves, resealable zippers, and hang holes for versatile packaging needs. They are widely used for coffee, snacks, nuts, and dry goods.
·Multi‑layer composite structures (PET/PE, PA/PE, aluminum foil, metallized film) deliver outstanding barrier properties against oxygen, moisture, and UV light, significantly extending product shelf life.
·Flat sealed bottom creates a stable box‑like form that stands upright without external support, preventing tipping on supermarket shelves.
·Five large printable panels (front, back, two side gussets, and bottom) provide ample space for brand logos, vibrant graphics, and detailed product specifications.
·Reinforced multi‑edge sealing ensures excellent pressure resistance and leak‑proof performance, suitable for heavy‑weight contents such as bulk coffee beans, nuts, and grains.
·Optional one‑way degassing valve (for coffee) allows CO₂ release while blocking external oxygen, maintaining product freshness and preventing bag swelling.
·Resealable zipper closure (optional) enables convenient repeated opening and closing, keeping leftover contents fresh.
·Available in a variety of surface finishes including matte, glossy, soft‑touch, hot stamping gold/silver, and partial UV, for premium brand presentation.
·Lightweight yet rigid structure reduces shipping and storage costs compared to rigid containers, while empty bags can be shipped flat to save space.
Perfect for roasted coffee beans and ground coffee, premium snacks, nuts, dried fruits, tea leaves, pet food, herbal medicines, and gift specialties. Widely used in coffee roasteries, specialty food brands, supermarket retail, online e‑commerce, and bulk wholesale packaging for dry foods.