Liquid packaging board

The barrier coating must hold the liquid and prevent migration of air and flavors through the paperboard.

[1] A liquid packaging board might be up to five plies and is formed on a multi-ply paper machine with online coating.

When induction welding is employed an aluminum foil layer is used for barrier protection and for heating.

Cartons filled with short-shelf-life dairy products use board that are barrier coated on both sides with one layer of low density polyethylene.

[4] Liquid Packaging Board (LPB) is traditionally associated with beverage packaging, including for milk, juiceboxes and other dairy products, but its applications extend beyond just liquids, encompassing a broad range of uses due to its strength, barrier properties, and versatility.