Primacord
Appearance
Primacord is a registered trademark of detonating cord used in blasting, originally manufactured by the Ensign-Bickford Company. Ensign Bickford sold the trademark to Dyno Nobel Inc in 2003 and it is now manufactured in Graham, Kentucky. Primacord consists of a core of pure powdered PETN in an outer textile jacket (sometimes waxed), and is produced in 8 strengths:
Name | Loading g/m (gr/ft) | Colour |
---|---|---|
Primacord 1 | 1.5 (7.5) | Yellow |
Primacord 2 | 2.1 (10) | Orange |
Primacord 3 | 3.2 (15) | Red |
Primacord 4Y | 3.6 (18) | Yellow |
Primacord 4R | 3.6 (18) | Red |
Primacord 5 | 5.3 (25) | Red |
Primacord 8 | 8.6 (40) | Red |
Primacord 10 | 10.6 (50) | Yellow |
Primaline is a related product differing principally in having a plastic jacket instead of textile. Primaline is also available in higher loadings, up to 85 g/m (400 gr/ft):
Name | Loading g/m (gr/ft) | Colour |
---|---|---|
Primaline 4D | 3.6 (18) | Orange |
Primaline 4HS | 3.6 (18) | Clear with blue stripe |
Primaline 5 | 5.3 (25) | Orange with wax coating |
Primaline 5D | 5.3 (25) | Orange |
Primaline 5NF | 5.3 (25) | Yellow |
Primaline 8D | 8.6 (40) | Orange |
Primaline 8HS | 8.6 (40) | Clear with black stripe |
Primaline 10HS | 10.6 (50) | Clear with red stripe |
Primaline 21 | 21.3 (100) | Clear |
Primaline 32 | 31.9 (150) | Clear |
Primaline 42 | 42.5 (200) | Clear |
Primaline 85 | 85 (400) | Light green |
"Primacord" is frequently used as a synonym for any detonating cord; c.f. genericized trademark.
See also