MeadWestvaco files Chinese patent application for method of coating dry finish paperboard; process involves creating paperboard without introducing substantial moisture, applying pigmented coating

Aimee Bellah

BEIJING , July 13, 2014 (Packaging & Containers Patent News) – MeadWestvaco Corporation has filed a patent application for method for coating dry finish paperboard. This invention was developed by Gary P Fugitt, Steve G Bushhouse, Jason Richard Hogan, Wei-Hwa Her and Steven Parker.

The patent application number is CN20131505808 20090320. The patent publication number is CN103510426 (A). International Patent Classification code is D21H19/40. Cooperative Patent Classification codes are D21H11/04, D21H17/63, D21H17/67, D21H19/36, D21H19/38, D21H23/30 and D21H25/005.

According to the abstract released by the State Intellectual Property Office of China: "The invention relates to a method for coating a dry finish paperboard. The method for coating a paperboard including the steps of preparing a web of cellulosic fibers, the web having a basis weight of at least about 85 pounds per 3000 ft2, calendering the web at least once to form a paperboard substrate, wherein each of the calendering steps is performed without substantially introducing moisture to the web, and applying a basecoat to at least one surface of the paperboard substrate to form a coated paperboard structure. The basecoat includes at least one pigment. The pigment has a sediment void volume of at least about 45 percent. The coated paperboard structure has a Parker Print Surf smoothness of at most about 3 microns."

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