Aggregated wood pulp has a good capillary shape, which can produce high infusion dispersion. But it needs to reach a certain size to build up a three-dimensional structure to play an absorbent role, so the diaper will be thicker. Wood pulp and highly absorbent resin, two properties have complementary effects, one absorbent, one retains a large amount of water, so the diaper chip composed of the appropriate ratio and mix can achieve the best absorption rate and water absorption rate. Generally, the ratio is 15-25:1, with about 20 parts absorbent resin and 1 part wood pulp.