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Blast Curtains Thicken

• arclein
Here’s how it works. Each strand of the curtain’s yarn consists of a central stretchy fiber, with a more rigid fiber wound around the outside of it. When put under strain, the rigid outer fiber straightens, squeezing the stretchy inner fiber and causing it to bulge out sideways – the inner fiber doesn’t actually expand, but it does end up taking up more space. Tiny pores open when the material stretches, which are too small to let debris through, but are sufficient to release some of the force of the blast, and keep the curtain from ripping.

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