Coiled material transfer printing powder coating and preparation method thereof

The invention provides a coiled material transfer printing powder coating and a preparation method thereof. The coiled material transfer printing powder coating is prepared from the following raw materials in parts by mass: 55-85 parts of modified carboxyl-terminated polyester resin, 5-15 parts of a curing agent, 0-5 parts of triphenylphosphine, 0-35 parts of a filler, 0-10 parts of a pigment, 0-8 parts of an auxiliary agent and 1-5 parts of a surfactant; wherein the modified carboxyl-terminated polyester resin is obtained through a reaction of 35-45% of dihydric alcohol, 1.5-3.0% of polyhydric alcohol, 42-52% of aromatic dibasic acid, 1.8-12% of fatty dibasic acid, 0.5-2% of ethyltriphenylphosphine, 1-2% of esterification catalyst and 1-2% of acidolysis agent. After the powder coating iscured for 20-40 s, a clear and obvious transfer pattern can be obtained in a coating through rapid transfer printing for 20-40 s, so that rapid curing and rapid transfer printing can be achieved at the same time, and paper is