Why are most packaging bags of instant coffee designed to be cylindrical?

This is to facilitate the pouring of coffee powder into the cup, so that the coffee powder will not easily fall out of the cup. In addition, the long cylindrical packaging bag is also convenient to carry. The packaging design of coffee is generally convenient, eye-catching and easy to store. Just like the one-way exhaust valve, the packaging accessory is installed on the coffee bean packaging bag to ensure the flavor of coffee remains unchanged. Because of this one-way valve, the carbon dioxide gas generated by roasting coffee beans can be discharged out of the bag, so as to prevent the coffee bag from bursting, and at the same time, it can also prevent the outside air from entering the bag and causing the coffee beans to oxidize and deteriorate.