WestRock MWV, LLC

A cellulosic substrate includes a first major side and a second major side opposed from the first major side, a single polyolefin aqueous polymer dispersion barrier layer on the first major side of the cellulosic substrate, and at least one non-polyolefin aqueous polymer dispersion barrier layer between the single polyolefin aqueous polymer dispersion barrier layer and the first major side of the cellulosic substrate.

A coated cellulosic substrate includes a cellulosic substrate having a first major side and a second major side, a printable coating on the first major side of the cellulosic substrate, an aqueous overprint water barrier coating on the printable coating, and a moisture vapor barrier coating on the second major side of the cellulosic substrate.

A coated paperboard includes a recycled paperboard substrate having a first side and a second side, a first aqueous barrier coating applied over the first side, and a second aqueous barrier coating applied over the first aqueous barrier coating. The first aqueous barrier coating is formed from a mixture of binder and pigment. The second aqueous barrier coating is formed from a mixture of binder and pigment.

An aqueous coated paperboard is disclosed which exhibits good barrier properties and anti-blocking behavior and is heat sealable.

A blank for a package can include a substrate comprising a recyclable paper, the substrate having a first side and a second side opposite the first side. The blank can include one or more recyclable fluid resistant layers on the first side of the substrate configured to prevent water and/or oxygen from passing through to the substrate. The one or more recyclable fluid resistant layers can be configured to be an outside of the package. The blank can include a recyclable fluid permeable layer disposed on the second side and configured to allow a controlled amount of a fluid transmissibility and/or absorption by or through the fluid permeable layer.

A packaging comprising: (a) a blister having a cavity; (b) a foil disposed over an opening of the cavity and secured to the blister; and (c) a board disposed over the foil having a hole, wherein a shape of the hole is formed by an outer perimeter and the outer perimeter includes an opening feature that pierces or tears the foil during opening of the blister due to a force being applied to the opening feature.

A pulping method includes chemical cooking of softwood chips to retain a high lignin content of about 18% to about 28% by weight and fiberization of the cooked softwood chips to a low residual wood shive content of at most 15% by weight.

A cellulosic structure includes a cellulosic board substrate having a first side and a second side and an outermost heat seal layer on the first side of the cellulosic board substrate. An oxygen barrier resin layer and a metal oxide coated polymer barrier film are between the first side of the cellulosic board substrate and the outermost heat seal layer.

A coated cellulosic structure including a cellulosic substrate having a first major surface and a second major surface and a printability coating on the first major surface of the cellulosic substrate. A moisture vapor barrier coating is disposed on the second major surface of the cellulosic substrate. A primer coating is disposed on the printability coating at a sealing area of the coated cellulosic structure. An overprint water barrier coating is disposed on the printability coating at a non-sealing area of the cellulosic structure.

A coated cellulosic structure includes a cellulosic sheet substrate, a basecoat layer on the cellulosic sheet substrate, and a barrier layer on the basecoat layer. The barrier layer has an average thickness (AT) in a range of from about 1 μm to about 6 μm. The barrier layer has a uniformity in thickness characterized by a coefficient of variation (CV) of 0.7 or less, wherein CV=σ/AT, wherein σ is the standard deviation of the thickness.