| Abstract |
A process for the mechanized production of a spun, multilayered, multifibered cracker fuse for firecrackers, fireworks and the like comprising passing one or more yarns or strands of natural or synthetic material through gun-powder stored in a hopper having a nozzle at the bottom so that these yarns or strands draw the gun-powder along their way through a nozzle forming a fuse to the rotating action of a primary plate, the fuse is then passed through a predetermined size of the nipple for making the fuse more dense, tight and more uniform in diameter and appearance and thereafter again spinning the fuse in opposite direction compared to earlier spinning, with another layer of yarn/s or any other material such as plastic or paper tapes to prevent unwinding of primary layer to give the additional effect to firmly hold the primary layer in place to prevent the fuse from unwinding and keep the powder in its place, if required the product is further wrapped or lapped with one or more suitable thermoplastic tape(s) and the like, the fuse is then painted by passing the fuse through a painting composition comprising a colouring medium, an adhesive such as glue and a filler so that fuse dose not get unwound and it also looks attractive and smooth, the painted fuse/product is then pulled or capstained at a uniform speed, dried, sealed if necessary and collected on a suitable bobbin, reel or drum or in coils. |