B-grade refers to diapers sorted out by automated inspection machines due to visual or cosmetic defects, such as:
Printing errors
Surface stains
Tape misalignment
These account for roughly 3%–5% of total production.
Super Thin Baby Diaper Pants, soft clothlike flim with customized design printed, super soft non woven fabric topsheet, absorption core is Sandia and Sumitomo SAP with air-laid paper.