Cortec Corporation established EcoShield Barrier Coating, an environmentally friendly alternative to polyethylene and wax paper coatings for the manufacturing of moisture-resistant paper and corrugated boxes. EcoShield Barrier Coating is a water-borne barrier coating that is recyclable and 100% repulpable. It eliminates the need to use traditional wax and polyethylene coatings.
The coating can be used, on kraft and recycled paper, as well as onliners for corrugated boxes, providing a waterproof moisture barrier with excellent oil and grease resistance. When tested according to ASTM E-96, paper coated with EcoShield Barrier Coating showed good water vapor barrier properties compared to polyethylene-coated paper and commercial waxed paper.
Papers coated with EcoShield Barrier Coating also have better physical properties such as burst, tear, tensile strength, elongation, folding endurance, coefficient of friction, and smoothness.
EcoShield Barrier Coating is formulated in compliance with the FDA Code of Federal Regulations Title 21:
• §176.170-Components of paper and paperboard in contact with aqueous and fatty foods
• §176.180-Components of paper and paperboard in contact with dry food
It can be applied by most common paper roll coaters, including gravure, flex, air-knife, reverse-roll, etc. The drying temperature is 180-200 °F (82-93 °C), and suggested paperweights are 8-11 lb/ream (3,000 ft²) (13-18 g/m²).
