| 摘要 |
PCT No. PCT/CH93/00119 Sec. 371 Date Mar. 2, 1994 Sec. 102(e) Date Mar. 2, 1994 PCT Filed May 12, 1993 PCT Pub. No. WO93/23301 PCT Pub. Date Nov. 25, 1993.A three-dimensional structure of concentric rings forming a container of plastic material. A plurality of concentric ring-shaped wall elements adjoin each other to form an inner surface of the container. Adjacently adjoining wall elements are connected and inclined with respect to each other. The wall elements are connected to each other with a ring-shaped area of reduced wall thickness, forming a film hinge. The wall elements are inclined so that they can be turned down over adjoining elements to collapse the container.
|
