Wet Machine Battery Separator Board
High-purity wet machine board exceeding 225 g/m² used as separator material between battery electrodes. Meets HTS 4805.93.40.15 criteria for uncoated paperboard produced by wet machine process in rolls or sheets. Provides electrical insulation and electrolyte permeability essential for battery performance.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If impregnated with insulating compounds
Chemically treated insulating materials for electrical apparatus fall in Chapter 85.
If fluting paper for corrugation with specific CMT resistance
Corrugated medium paper with defined crush resistance goes to 4805.11.
If in rectangular sheets with embossing
Worked paperboard with embossing or patterns beyond note 3 moves to heading 4820.
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Import Tips & Compliance
• Include chemical composition analysis showing paper pulp dominance over plastic materials
• Document Mullen burst strength if questioned on structural paperboard classification
• Ensure no impregnation treatments that would classify as coated under 4811
Related Products under HTS 4805.93.40.15
Wet Machine Board for Ceiling Tiles
Wet machine board is a heavy uncoated paperboard weighing over 225 g/m², produced by wet forming process, used as the base material for manufacturing acoustic ceiling tiles. It falls under HTS 4805.93.40.15 as other uncoated paperboard in rolls or sheets, not further worked, meeting the weight threshold and wet machine production method. This board provides structural support and sound absorption properties in construction applications.
Wet Laid Nonwoven Board for Filtration
Specialty wet machine board, over 225 g/m², designed for industrial air and liquid filtration media substrates. Classified in HTS 4805.93.40.15 as uncoated wet machine board not further processed beyond chapter note 3 specifications. The wet laying process creates uniform fiber distribution ideal for high-efficiency filters.
Wet Laid Technical Board for Gaskets
Wet machine board over 225 g/m² serving as base material for manufacturing industrial gaskets and seals. Classified under HTS 4805.93.40.15 as other uncoated heavy paperboard not further worked per chapter specifications. Offers compressibility and sealability when combined with subsequent processing.
Wet Machine Board for Wall Coverings
Heavyweight wet machine board >225 g/m² used as liner or substrate for decorative wall covering materials. Falls under HTS 4805.93.40.15 as uncoated paperboard in rolls, suitable for building applications requiring moisture resistance. Provides smooth surface for vinyl or textile wallcoverings.
Wet Laid Absorbent Core Board
Wet machine board designed for absorbent cores in hygiene products, weighing more than 225 g/m² uncoated. HTS 4805.93.40.15 covers this as other heavy paperboard produced by wet process in rolls or sheets. High absorbency from specialized pulp blends for disposable applications.
Wet Machine Electrical Insulation Board
Uncoated wet machine board >225 g/m² for electrical insulation in transformers and motors. Precisely classified HTS 4805.93.40.15 as heavy other paperboard not further worked. High dielectric strength from purified wood pulp composition.