1.中间封合结构，成型简单，生产成本低 2.袋面完整无侧边封条，印刷版面更大 3.热封牢固，阻隔防潮保鲜性能稳定 4.尺寸灵活，适合面粉、茶叶、膨化食品等

Made by folding film and heat-sealing at the center with one middle sealing line. Flat and neat pouch body. Supports vacuum, high-barrier, color printing and retort techniques, widely used for powder, granule and strip food with favorable price.