Patent ID: 9167927
Filing Date: 2015-10-27
Classification: A47G,B31B,B65D

Abstract:
1. A method of shaping a side paper of a foldable paper cup that can fold by cutting an intermediate portion of a container side wall and that includes a container side wall that winds the side paper in a cone shape, a curling part that is circularly wound to the outside in an upper end portion of the side wall, and a bottom paper support shaping portion by coupling to enclose a downward bent portion by bending a lower end portion of the side wall to the inside in a state in which a bottom paper having a downward bent portion in which an entire circumference of an outer circumferential surface is bent downward is inserted into a lower end portion of the side paper, the method including: first step of forming a cutting part that divides a portion of a continued original side paper into a side paper upper portion and lower portion; second step of laminating a film and the original side paper and forming a mold-releasing portion in which the original side paper and the film are not bonded in the portion of the side paper upper portion; third step of cutting one end film of the mold-releasing portion and separating a fan-shaped side paper from the original side paper; and fourth step of forming the cone-shaped container side wall by circularly winding and attaching the side paper to a shaping device.