公开(公告)号：US4387491A

公开(公告)日：1983-06-14

申请号：US288630

申请日：1981-07-30

申请人： Cecil F. Schaaf ,  Craig R. Schaaf ,  James E. Van Linden ,  Kirk S. Van Linden

发明人： Cecil F. Schaaf ,  Craig R. Schaaf ,  James E. Van Linden ,  Kirk S. Van Linden

IPC分类号： A61G17/00 ,  E04H13/00

CPC分类号： E04H13/00 ,  A61G17/00 ,  A61G17/007

摘要： A container, which may be a burial casket or a toxic waste container, is protectively sealed by enclosing it in an initially open-topped receptacle, which may be a burial vault or similar outer container or a grave, spacing the container from the bottom of the receptacle, partially filling the receptacle with a foamable plastic still in its liquid form, and, following completion of the foaming of such initial charge, supplying sufficient additional foamable plastic in one or more additional steps to completely cover and surround the container with the resulting plastic foam. In the preferred method, a film-like plastic sheet is placed over the open-topped receptacle after the final charge of liquid foamable plastic is applied, and held in place around the edges of the opening by a collar which permits the sheet to yield upwardly as the foam expands, thereby partially confining the expanding foam to assure full filling of all voids in the receptacle. Fine-grained perlite is preferably mixed with the liquid foamable plastic to improve its properties.

摘要翻译： 一个可能是埋葬棺材或有毒废物容器的容器通过将其封闭在初始敞开的容器中而被保护性密封，该容器可以是埋葬库或类似的外部容器或坟墓，将容器与底部隔开 容器部分地用可发泡塑料部分地填充容器，并且在完成这种初始装料的发泡之后，在一个或多个附加步骤中提供足够的可发泡塑料以完全覆盖和围绕容器，从而产生 塑料泡沫 在优选的方法中，在施加液体可发泡塑料的最终装料之后，将膜状塑料片放置在敞开的容器上，并且通过使得片材向上屈服的套环保持在开口的边缘周围的位置 因为泡沫膨胀，从而部分地限制膨胀的泡沫，以确保充分填充容器中的所有空隙。 细粒珍珠岩优选与液体可发泡塑料混合以改善其性质。