Copolyamide Hot Melt Adhesive Powder for Elastic Knitwear Hotfix Rhinestone Transfer This copolyamide (PA) hot melt powder is engineered for decorating stretch garments with rhinestones, studs and motifs. Its fine 0-80 micron grain and 110-130°C activation window let the stones set before the knit is scorched, so cotton jersey, polyester spandex and viscose blends keep their stretch and softness after pressing. Unlike brittle high-melt powders, the cured bond flexes with the