公开(公告)号：US4697518A

公开(公告)日：1987-10-06

申请号：US011071

申请日：1987-02-05

申请人： Nam S. Lau ,  Yick J. Lau

发明人： Nam S. Lau ,  Yick J. Lau

IPC分类号： F42B4/04 ,  F42B4/00

CPC分类号： F42B4/04

摘要： A pyrotechnic device having a maximum explosive effect with a minimum quantity of explosive composition. The device is in the form of a polyurethane plastic foam body molded about a firecracker tube. The firecracker tube contains a small explosive composition charge therein and into which a fuse extends. The tube is sealed at each end by packing means. A polyurethane sealant coating is provided over the tube to seal any openings in the tube and any openings in any interface between the tube, the packing means and the fuse. The sealant serves as a good engaging surface to which the body portion of plastic foam will adhere when molded. When completed, the plastic foam body has a predetermined shape, such as cylindrical, generally spherical, or multifaceted.

摘要翻译： 具有最小爆炸成分的最大爆炸作用的烟火装置。 该装置是围绕一个爆竹管模制的聚氨酯塑料泡沫体的形式。 爆竹管中含有一个小的炸药组合物，其中保险丝延伸到其中。 管通过包装装置在每一端密封。 在管上方提供聚氨酯密封剂涂层以密封管中的任何开口以及管，填料装置和保险丝之间任何界面中的任何开口。 密封剂作为良好的接合表面，当模制时塑料泡沫的主体部分将粘附到该接合表面上。 当完成时，塑料泡沫体具有预定的形状，例如圆柱形，通常为球形或多面的。