| 摘要 |
<p>Open container made from synthetic thermoplastic sheet. Consiting of a tronconic wall of which the top edge forms the opening of the container and has a larger circumference than the bottom edge, the plane base fixed firmly to the wall and surrounded by a rim, the lateral edges of the sheet forming the conical sides, the base being in the form of a dish whose rim is set at the same angle to the horizontal as the container walls. The external face of the rim may be fixed inside or outside the container walls. The container is formed from synthetic thermoplastic material, preferably unplasticised polyvinyl chloride. Such a container has a tight bond between the base and the walls and may be assembled simply without complicated welding apparatus.</p> |
