Importance

Loading Importance Indicators...

Abstract

A multiple-ply paperboard material having improved oil and grease resistance properties, and improved stain masking properties to minimize the appearance of oil and grease stains in the paperboard material, and a method for forming same. The multiple-ply paperboard includes a substantially paperboard substrate having at least two plies, including at least a top ply and a bottom ply formed of substantially paperboard material, a grease resistant coating, a pigment-based pre-coating and a pigment-based top coating. The grease resistant coating includes a fluorochemical component applied to the outer surface of the top ply and to the outer surface of the bottom ply to hinder the penetration and migration of grease and oil into said substantially paperboard substrate through both the top ply and the bottom ply. The pigment-based pre-coating is applied to the top ply over the grease resistant coating, while the top coating is applied over the pre-coating. The pre-coating and top coating both include an opacity enhancing component, such as titanium dioxide, to minimize the appearance of grease and oil stains in the paperboard material. A separate masking agent may also be coated onto the top ply, integrated into the grease resistant coating and/or added to at least one of the pigment based coatings to help mask grease and oil stains.

Loading the Abstract Image...

First Claim