Ultra Fine Copolyamide PA Hot Melt Adhesive Powder for Denim Rhinestone Hotfix Wash Resistant Bonding This high-wash copolyamide (PA) powder is made for dense rhinestone and stud decoration on denim, twill and canvas. The crystalline grain melts at 140-160°C and forms a tough, abrasion-resistant bond that keeps heavy stones in place through stone washing and industrial laundering. With a 50-120 micron cut, the powder fills the deep setting of larger stones and gives a strong,