Cross-Linked Polyolefin Foam Sheets
Chemically cross-linked cellular polyolefin foam sheets used for insulation and gaskets, classified in 'Other' per subheading note (a)(3) for chemically modified polymers. Under HTS 3921.19.00 as cellular sheets of other plastics. Provides superior durability and flexibility.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If chemically modified but non-cellular
Non-cellular modified polymers classify based on base monomer in 3920 'Other' subheadings.
If polystyrene copolymer blend
Blends where styrene predominates shift to polystyrene cellular series per note (a)(4).
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Import Tips & Compliance
• Document chemical modification process to support 'Other' classification under subheading note (a)(3)
• Ensure declaration specifies 'cellular' density tests to distinguish from solid polyolefin sheets
• Watch for bulk packaging; retail-packed sheets under 38.1cm width may get Free (B) but verify per US note
Related Products under HTS 3921.19.00
Cellular PVC Foam Board Sheets
Rigid cellular polyvinyl chloride (PVC) foam boards used for signage, displays, and construction panels. Classified under HTS 3921.19.00 as cellular sheets of other plastics (PVC predominates over 95% per subheading note (a)(1)). The foamed structure offers high strength-to-weight ratio and weather resistance.
Cellular Polycarbonate Foam Panels
Lightweight cellular polycarbonate foam panels for aerospace and architectural glazing applications. HTS 3921.19.00 covers cellular sheets of polycarbonate as other plastics (not polyethylene/polystyrene/PU/etc.). Offers transparency and impact resistance.
Cellular Polyamide Foam Sheets
Nylon (polyamide) cellular foam sheets used for impact protection and vibration damping in machinery. HTS 3921.19.00 as cellular polyamide-6 or -6,6 (95%+ monomer per note (a)(1)). High toughness and abrasion resistance.
Cellular Acrylic Foam Tapes Base Sheets
Double-sided cellular acrylic polymer foam sheets serving as carrier for pressure-sensitive adhesive tapes. HTS 3921.19.00 for cellular acrylics not elsewhere specified. Used in automotive and electronics assembly.
Polyimide Cellular Foam Sheets
High-temperature resistant cellular polyimide foam sheets for aerospace thermal insulation. Classified HTS 3921.19.00 as other plastics cellular sheets. Maintains properties up to 300°C.
Expanded Polypropylene (EPP) Foam Sheets
These cellular sheets made from expanded polypropylene are lightweight and impact-resistant, commonly used for protective packaging inserts. They fall under HTS 3921.19.00 as cellular plates, sheets, film, foil, or strip of other plastics, specifically non-polyethylene, non-polystyrene cellular polypropylene. The closed-cell structure provides excellent buoyancy and thermal insulation.