Method for forming paper-wrapped emulsion explosive cartridges
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United States of America Patent
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Aug 29, 1995
Grant Date -
N/A
app pub date -
Mar 30, 1994
filing date -
Mar 30, 1994
priority date (Note) -
Expired
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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.
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