Method for forming paper-wrapped emulsion explosive cartridges

Details Method for forming paper-wrapped emulsion explosive cartridges Method for forming paper-wrapped emulsion explosive cartridges

1994-03-30

1995-08-29

Nelson, Peter A.

86 10, 86 11, 86 32, F42B 702

Patent

active

054450594

ABSTRACT:
The invention is a novel method for forming paper-wrapped cartridges of gassed emulsion explosive comprising the steps of (a) forming a water-in-oil emulsion at an elevated temperature, (b) chemically gassing the emulsion to form a sensitizing, uniform distribution of gas bubbles throughout the emulsion, (c) shaping the chemically gassed emulsion into a continuous rod of emulsion, (d) continuously wrapping the rod of emulsion with a paper packaging material that is shaped circumferentially around the rod and sealed longitudinally with an adhesive that can withstand the elevated temperature of the emulsion and is water-resistant, (e) cutting the paper-wrapped emulsion rod into individual cartridges, and (f) cooling the cartridges by contacting them with a liquid, preferably water, at a temperature below the elevated temperature of the emulsion.

REFERENCES:
patent: 2327885 (1943-08-01), Grace et al.
patent: 2564695 (1951-08-01), Johnson, Jr. et al.
patent: 3282146 (1966-11-01), Baker
patent: 3783735 (1974-03-01), Murphy
patent: 4790890 (1988-12-01), Miller
patent: 4867920 (1989-09-01), Sudweeks et al.

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