Free-flowing pressure sensitive adhesives

Hot melt adhesive consisting of a pressure sensitive adhesive comprising at least one polymer selected from polyester, polyacrylate, polyolefin, polyurethane, ethylene vinyl acetate polymers, styrene blockcopolymers or mixtures, at least one tackifier and additives the adhesives having the form of pellets, each pellet of adhesive has an outer shell of a film forming material, whereby i)the adhesive has a softening point of 80 to 150 DEG C and has at 25 DEG C a tacky surface, ii) the film forming material is a thermoplastic polymer with a melting point of less than 120 DEG C, iii) each pellet being completely surrounded by the film material, so that the pellets have a non-blocking surface and are free flowing at a temperature of less then 45DEG C. Such pellets can be used as feed for automated feeder devices for the supply hot melt application systems. 本发明涉及自由流动的压敏粘合剂，由压敏粘合剂核、至少种增粘剂和任选存在的添加剂组成，所述压敏粘合剂包括选自聚酯、聚丙烯酸酯、聚烯烃、聚氨酯、乙烯-乙酸乙烯酯聚合物、苯乙烯嵌段共聚物或它们的任意混合物的至少种聚合物，核材料的软化点为80-150℃并在25℃下具有粘性表面，所述热熔性粘合剂具有颗粒的形式，每个粘合剂颗粒均具