Japanese paper manufacturers developed waterproof cardboard boxes. The demand for the boxes is expanding as it reduces the amount of plastic waste that increases every year. The use of boxes, which can store liquid and ice for 3 days, is becoming widespread in daily life, especially in the food sector. It is estimated that the new boxes, which differ from the milk and juice boxes currently used in the market by not containing polyethylene, will completely replace plastic boxes in the near future.