Internal wetting agent for use in manufacture of polymeric films and fabrics for disposable absorbent articles
View Patent ↗An improved internal wetting agent is provided for blending with polymeric material, with the formation of apertured films and/or polymeric fibrous webs contemplated. Films and/or nonwoven fabrics of this nature are suited for use in disposable absorbent articles, particularly for the so-called topsheet or facing layer, which contacts the wearer during use. Because polymeric materials from which these types of facing layers are made are typically hydrophobic, the provision of an internal wetting agent facilitates the passage of liquid through the facing layer into an associated absorbent structure.
1. A film comprising a continuously extruded sheet containing a polyolefin polymeric material and a wetting a agent provided in pellet form, wherein said wetting agent consists essentially of about 10% to 13% by weight of a wetting compound consisting of glycerol reacted with lauric acid, and between about 38% to 44% by weight of titanium dioxide (TiO 2 ), and the balance of said wetting agent is a low density polyethylene carrier resin with which said wetting compound and said titanium dioxide are blended, and the film contains 0.2% to 3.0% by weight of said wetting compound.
2. A film according to claim 1 , wherein:
said titanium dioxide is provided in a range of about 38.5% to 40% by weight.
3. A film according to claim 2 , wherein:
the film contains about 0.2% to 1.8% by weight of said wetting compound.
4. A film comprising a continuously extruded sheet containing a polyolefin polymeric material and a wetting agent provided in pellet form, wherein said wetting agent consists essentially of about 12.5% by weight of a wetting compound consisting of glycerol reacted with lauric acid, about 40% titanium dioxide (TiO 2 ), by weight, and about 47.5% by weight of low density polyethylene as a carrier resin, and the film contains about 0.2% to 1.8% by weight of said wetting compound.