| 摘要 |
Provided are a coating material for entry sheets, which has good compatibility with a water-soluble lubricant and is directly spreadable on a thin metal film without using a primer, and a manufacturing method thereof. The coating material for entry sheets comprises 30-90wt% of a water-soluble copolyester resin having a number average molecular weight of 10,000-80,000 and containing sulfonic acid groups, 5-30wt% of a first water-soluble lubricant having a number average molecular weight of 3,000-40,000 and having an acid at the terminal group, and 5-40wt% of a second water-soluble lubricant having a molecular weight of 600-1000 and including ether groups. |
