Paper bag is a kind of bag made of paper as the main raw material, it is usually made of kraft paper, white cardboard or other special paper. Paper bags made of kraft paper are tough and have good tear resistance, suitable for loading heavier items; White cardboard is delicate and smooth in texture, and is mostly used to make some paper bags that are more delicate and pay attention to the appearance, such as gift bags. Paper bags have certain breathability, which makes it possible to package some items that need to be breathable, such as bread and other foods. At the same time, paper bags are easy to print, and can display brand image or product information through exquisite patterns and text design, and paper bags also have advantages in environmental protection. It is recyclable and easier to decompose in the natural environment than plastic, so it is a more environmentally friendly packaging choice.