| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve a stacking and de-stacking property of a paper cup significantly. <P>SOLUTION: A double wall paper cup capable of being stacked and de-stacked includes: an inner sleeve with a cup bottom; an outer sleeve having a clearance between the inner sleeve and the outer sleeve; a roll processed edge provided at the lower end of the outer sleeve and also arranged on the inner sleeve; and a stopping face for the roll processed edge of the other paper cup stacked in the same way, which is formed in the inner sleeve. Here, the stopping face (5) is designed as a shoulder, the diameter of the inner sleeve (1) is decreased discontinuously from a first point immediately above the shoulder, of the inner sleeve toward a second point immediately below the shoulder, of the inner sleeve, the shoulder is arranged in a range of a lower half of the inner sleeve, and a supporting part (13) of the lower roll processed edge (11) is in contact with the outer surface (25) of the inner sleeve (1) at the level of the cup bottom (4) or below the cup bottom (4). <P>COPYRIGHT: (C)2012,JPO&INPIT |
