... Product Structure: leakage barrier, surface layer Non-woven cloth, flow-guiding layer, upper layer Tissue, Bottom Film 1 (PE film ... Adopt Double-screw SAP feeding Device. <2>. One-body Shape for cotton core and SAP, ensure ... from upper and lower (it can add one layer of wet strength paper in the middle), ... tri-fold or Bi-fold).(22). Flow-guiding layer Non-woven, Hydrophilic Non-woven, Hydrophobic Non- ...