Reactive polyurethane hot melt adhesive and application thereof in bonding of special-shaped curved sponge

The invention belongs to the technical field of special-shaped curved surface sponge compounding, and particularly relates to a reactive polyurethane hot melt adhesive and application thereof in special-shaped curved surface sponge bonding. The reactive polyurethane hot melt adhesive is obtained from a polyurethane hot melt adhesive composition A and a polyurethane hot melt adhesive composition B, wherein the composition A comprises 10-55 parts of polymer polyol, 10-30 parts of isocyanate, 10-30 parts of EVA (Ethylene Vinyl Acetate) resin, 10-20 parts of acrylic resin, 10-40 parts of a tackifier and optional other auxiliaries; and the composition B comprises the following components in parts by weight: 40-90 parts of polymer polyol, 10-60 parts of isocyanate and other optional auxiliaries. According to the invention, cohesion of PUR glue can be reduced, so that the gluing roller is not adhered to sponge; the positioning performance during bonding is good; the bonding surface of the bonding product with the sp