Patent ID: 7300547
Filing Date: 2007-11-27
Classification: B32B,D06M,D21H,Y10T

Abstract:
1. A method of making an absorbent cellulosic web resistant to moisture penetration comprising: (a) wetting at least one surface of the web with an aqueous dispersion including a wax and an emulsifier; and (b) heating the web above the melting temperature of the wax to fuse the wax of the dispersion and to provide a hydrophobic surface on the web, the wax being disposed in the web so that the open interstitial microstructure between fibers in the web is substantially preserved and the web has a laterally hydrophobic surface which exhibits a moisture penetration delay of at least about 2 seconds as well as a contact angle with water of at least 50 degrees at one minute of contact time with the web.