| 摘要 |
The present invention can reduce paper materials by improving a paper structure of an outer paper and an inner paper of a container structure of a double structure. The present invention can have sufficient rigidity of the outer paper when a user grips the container structure and applies insulation properties to the outer paper and the inner paper. The double vessel structure comprises the container shaped inner paper in which a first curling unit is formed on the upper part; a bottom paper connected to the lower end of the inner paper; and the outer paper connected to the outside of the inner paper in order to form a space unit between the inner paper and the outer paper. |
