Low-residue metal middle frame protection ink

The invention provides low-residue metal middle frame protection ink. The low-residue metal middle frame protection ink is prepared from the following components in parts by mass: 40 to 60 parts of polyester acrylate, 10 to 20 parts of water-soluble epoxy bifunctional acrylate oligomer, 3 to 6 parts of photoinitiator, 20 to 35 parts of filler, 0.3 to 0.6 part of color paste and the balance of ethanol. By reasonably compounding the polyester acrylate, the water-soluble epoxy bifunctional acrylate oligomer, the photoinitiator, the filler, the color paste and the ethanol, the removal difficulty of protective ink at the bonding position of metal and plastic on the metal middle frame can be effectively reduced, residues are reduced, the deinking efficiency is improved, and subsequent further processing and application of the metal middle frame are facilitated. 本发明提供一种低残留金属中框保护油墨，所述低残留金属中框保护油墨包括以下质量份数的各组分：聚酯丙烯酸酯40-60份，水溶性环氧双官能度丙烯酸酯低聚物10-20份，光引发剂3-6份，填料20-35份，色浆0.3-0.6份以及乙醇余量。通过合理复配聚酯丙烯酸酯、水溶性环氧双官能度丙烯酸酯低聚物、光引发剂、填料、色浆