Method of forming side paper of a foldable paper cup, and foldable paper cup

摘要

The present invention relates to a paper cup, and more particularly, to a foldable paper cup in which a volume of a container is variable, and a method of manufacturing a side paper of the foldable paper cup. The method of manufacturing the side paper of the foldable paper cup includes: a first step of forming a cutting part for dividing a portion of a continuous side paper source paper into upper and lower portions of the side paper; a second step of providing a release part to which the side paper source paper and a film do not adhere on a portion of the upper portion of the side paper so as to laminate the film and the side paper source paper; a third step of cutting a film on one end of the release part and separating the side paper from the side paper source paper in a fan shape; and a fourth step of rolling up the side paper around a forming mechanism to form a container sidewall having a cone shape. A curling part is formed on the entire circumference of an upper end of the side paper of the foldable paper cup manufactured so that upper and lower portions of the container are separated so as to fold a boundary between the upper and lower portions. Here, a bottom paper support part, for supporting a bottom paper inserted into the entire circumference of the lower end of the side paper, is formed. Thus, in the method of manufacturing the foldable paper cup of the present invention, an additional process is performed prior to an existing manufacturing process to utilize the existing process of manufacturing the paper cup as-is. Also, since the manufacturing processes are simplified, additional costs required for manufacturing the foldable paper cup may be inexpensive. In the foldable paper cup of the present invention, the volume of a container of a cup ramen may be reduced to reduce distribution costs in stages of distribution. Also, the foldable paper cup may be easily portable. When the foldable paper cup is used, the foldable paper cup may provide a container having a large volume similar to that of the container of a conventional cup ramen and may also be firm.

主权项

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.