This part of 9073 specifies a test method to examine the ability of diaper coverstock to resist the transport back onto the skin of a liquid which has already penetrated the coverstock.
This test correponds with the repeated liquid strike-through time descirbed in ISO 9073-13.
This test method is intended for quality control and is designed for comparison of wetback for different nonwoven coverstrock and treatments. It does not simulate in-use conditions for finished products.