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WestRock Liquid Pack Base Stock

Multi-layer extrusion coated bleached solid bleached sulphate (SBS) board with a caliper of 0.34 mm and a weight of 290 g/m², used for spout pouch beverage containers and frozen juice packs. The engineered surface supports high-quality flexographic printing and heat sealing. This product is classified under tariff item 4811.51.00 as bleached paperboard coated with plastics, exceeding 150 g/m².

Import Duty Rates by Country of Origin

Origin CountryMFN TariffSurtaxesTotal Effective Rate
🇨🇳ChinaFree—Free
🇲🇽MexicoFree—Free
🇺🇸United StatesFree—Free
🇩🇪GermanyFree—Free
🇯🇵JapanFree—Free

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

4811.59.00Same rate: Free

If the board is not bleached or weighs 150 g/m² or less

This subheading covers other plastic-coated paperboard not meeting the specific criteria of 4811.51.

4810.92.00Same rate: Free

If the coating is primarily inorganic (e.g., clay) rather than plastic

Inorganic-coated paperboard is classified under heading 48.10.

Not sure which classification is right?

The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.

Import Tips & Compliance

• Confirm the extrusion coating is entirely plastic; if it includes other layers, the tariff classification may differ

• Keep records of the base paperboard's bleaching and weight to support the 4811.51.00 classification

• Check with CBSA if the product is intended for food contact, as additional documentation may be required

Related Products under Tariff item 4811.51.00

Barrier-Coated Paperboard for Microwavable Plates

Bleached heavy paperboard weighing over 150 g/m² and at least 0.3 mm thick, with a multi-layer plastic barrier coating, supplied in rectangular sheets exceeding size minima. This product is used for microwave-safe plates and bowls, providing heat and moisture resistance. It falls under tariff item 4811.51.00 as bleached paperboard coated with plastics, weighing more than 150 g/m².

Barrier-Coated White Board for Retail Folding Cartons

Bleached white paperboard with a multi-layer plastic barrier coating, weighing over 150 g/m² and at least 0.3 mm thick, supplied in square sheets with sides exceeding 36 cm. This product is used for retail folding cartons for consumer goods, providing a barrier against moisture and grease. It falls under tariff item 4811.51.00 as bleached paperboard coated with plastics, weighing more than 150 g/m².

Barrier PE-Coated Bleached Board for Medical Packaging

This is high-barrier polyethylene-coated bleached paperboard weighing more than 150 g/m² and at least 0.3 mm thick, designed for sterile medical device trays and pharmaceutical boxes. It provides microbial protection and moisture resistance. The plastic coating ensures a sterile barrier for medical applications.

Biaxially Oriented Polypropylene Coated Board

Bleached paperboard weighing 180 g/m², extrusion-coated with biaxially oriented polypropylene (BOPP) film, with a total thickness of 0.38 mm, supplied in large rectangular sheets for premium folding cartons. The plastic coating is not an adhesive, and the product is bleached and exceeds 150 g/m², meeting the criteria of tariff item 4811.51.00.

Biaxially-Oriented PP Coated Paperboard Sheets

This is thick bleached paperboard weighing more than 150 g/m² with a thickness of 0.3 mm or more, coated with biaxially-oriented polypropylene (BOPP) film for high-gloss packaging like cosmetics boxes. The plastic coating enhances printability and barrier properties. It provides a premium finish for luxury packaging.

Bleached LDPE-Coated Board for Liquid Cartons

Bleached multi-ply paperboard weighing 180 g/m² with low-density polyethylene coating on both sides, 0.32 mm thick, in sheets exceeding 36 cm per side. This product is used as base stock for aseptic liquid packaging like juice boxes. It falls under tariff item 4811.51.00 as bleached paperboard coated with plastics, weighing more than 150 g/m².