Side Gusset Bags

Side gusset bags are a flexible packaging format with folded sides that expand to create a rectangular block. Common structures include flat bottom, stand up, and three-side-seal pouches, often made from PET/AL/PE, PET/NY/PE, kraft paper laminates, or mono-material PE and PP recyclable films. They protect contents from moisture, oxygen, and light, which suits coffee, tea, nuts, and pet food. Buyers who need shelf presence and stacking efficiency choose them. A trade-off is that the side folds can be harder to fill on standard vertical form-fill-seal lines, so you may need to adjust your packing setup.