| 摘要 |
A device for application in the art of blasting, by the use of nonelectric devices, and the new concept that employs pyrotechnic mixtures and combinations thereof which are distributed in granular form throughout the inside of a supporting tube. The pyrotechnic mixture applied to the supporting tube having been subjected to a suitable mixing process to ensure cohesive properties so that the mixture will adhere in the proper manner to the inside surface of the supporting tube, and will allow for great flexibility in the density of the surface charge, in addition to allowing for the use of a vast range of chemical substances, as well as the secondary use of these devices as retarder units. |
