When fired, the projectile sinks into the BALLISTIFLEX material it passes through before ending in the trap. The created hole then immediately closes under the effect of the heat generated by the bullet, the product is said to "self-healing" and up to several impacts in the same place. A bullet or projectile that would ricochet over the trap will be intercepted by the back of the curtain avoiding any return to the firing zone.
The reinforced viscoelastic properties of soft vinyl allow for an average absorption of 35 dB on the human hearing spectrum creating an acoustic barrier against impact noise in the trap and aspirations. The use of curtains also makes possible to confine the lead dust in the trap for better suction of the latter.
Properties | Standard | Unit | Value | Description |
Shore A hardness | EN ISO 868 | Sh A | 76 | Index based on a flat indenter's penetration depth. Scale from 0 (Soft) to 100 (Hard). |
Tearing resistance | DIN 53515 | N/mm | 32 | Minimum tensile stress required to tear a pre-slit sample. |
Tensile strength at break | ASTM D 638 EN ISO 527 | N/mm² | 13 | Maximum tensile stress that a material can be subjected to before break. |
Elongation at break | % | 370 | Elongation of the specimen at the break point under tensile stress. | |
Residual elong. (after break) | % | 72 | Permanent elongation of the specimen measured after rupture in a tensile test. | |
Thermal conductivity | ASTM C 177 | W/m.K | 0,16 | Ability to conduct heat. The Lower it is, the more insulation. |
Vicat softening temp. | EN ISO 306 | °C | 48 | Temperature at which the specimen is penetrated to a depth of 1 mm by a 1 kg flat indenter of 1 sq. mm. |
Specific heat capacity | ISO 11357 | kJ/kg.K | 1,6 | Heat energy required to increase the temperature of one kilogram of the material by one degree Celsius. |
Sound reduction | DIN 52210 | dB | >35 | Average sound level (freq. 0,1 to 3,2 kHz) decreased by a 1,76 sq.m. and 5 mm thick PVC curtain. |
Reaction to fire | EN 13501-1:2007 | - | - | Standard classifications of material self-extinguishing and resistance to combustion. |
Light transmittance | ASTM D 1003 | % | 0 | Visible light rate transmitted through the material. |
UV resistance | ISO4892 | - | Yes | Ability to resist to UV (Sun, welding arc). |
Surface resistivity | ASTM D257 | .1010 Ω/□ | 3 | Material surface electric resistivity measured with a 100 V direct voltage. |
Water absorption | EN ISO 62 | % | -0,2 | Material mass variation after exposure to humid conditions. (<0 if released / >0 if absorbed) |
Density | ASTM D 792 | g/cm3 | 1,18 | Mass per unit volume. |
The data contained in this technical specification is given for information only and is based on our current knowledge of the products concerned.
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