| 摘要 |
PURPOSE: A paper tube and a manufacturing method thereof are provided to reduce the manufacturing costs of the paper tube. CONSTITUTION: A paper tube (400) comprises a tube body (420) and multiple corrugations (440). The tube body is made of a layer of a soft material, and both ends thereof are welded to each other to be formed in a cylindrical shape. The corrugations separated from each other are formed on the tube body to fold and unfold the tube body in a circumference direction. |
