I can probably work with the spanish name as well, I personally work with aluminium and pyramid rubber (because it has a pyramid pattern on top) It's not bulletproof, no. But combine it with a 1,2 mm hard plastic base and rivet it together you get something that will definitely stop a blade and maybe a hammer.
Okay, I suppose I had a similar material. Still didn't get past the shoulder protection though. Attaching it is a problem and wearing it like I wanted is hard too. I got a leather coat I want to wear under the shoulder pads and above the other protection, but the modular system makes it harder to move in it of course.