| 摘要 |
<p>The stackable container has parallel and generally flat top and bottom faces for stacking with similar ones. The top and bottom faces each have bosses and recesses so shaped and arranged as to engage under light friction with mating ones in the containers above and below, thus holding the containers together. The bosses and recesses can be distributed over the entire top and bottom faces, and can be of slightly tapering section. The container can be hot-shaped from sheets of synthetic material.</p> |
