A pillow pouch is usually supplied as a back seal bag. The integrity and aesthetics of the patterns on the front of the pouch can be ensured due to it has no side seals. From the perspective of applicability, the pouch with no seals on side is able to withstand higher pressure, so that pouch breakage rate will be greatly reduced. Pillow pouches can be widely used as candy packaging bags, dried fruit packaging bags, and puffed food packaging bags, etc.