Flexible Polyester Release Film
Silicone-coated flexible unsaturated polyester film used as release liner in adhesive tape manufacturing. HTS 3920.63.10.00 applies to the base flexible, noncellular unsaturated polyester sheet, with coating not constituting reinforcement per notes. Essential for composite molding and pressure-sensitive applications.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If of vinyl chloride polymers
PVC-based release films fall under 3920.59 series following polymer-specific classification rules.
If reinforced with fabric or scrim
Any support or combination with other materials moves to heading 3921 reinforced plates/sheets.
If rigid rather than flexible
Non-flexible plates/sheets of polymers classify under 3920.10 regardless of polymer type.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Document that surface treatments (e.g
• silicone) do not qualify as 'lamination' or 'support' under heading terms
• Test for flexibility per ASTM standards if questioned by customs to confirm subheading placement
Related Products under HTS 3920.63.10.00
Unsaturated Polyester Shrink Film
Flexible biaxially oriented unsaturated polyester film designed for heat-shrink packaging applications. Classified in HTS 3920.63.10.00 as flexible, noncellular polyester film meeting 95% monomer content rule. Used for tamper-evident packaging on consumer goods.
Flexible Unsaturated Polyester Sheeting
Thin, flexible sheets made from noncellular unsaturated polyester resin, used for protective coverings and packaging applications. Classified under HTS 3920.63.10.00 as flexible plates, sheets, film, foil, or strip of unsaturated polyesters, not reinforced or combined with other materials. Meets subheading note requirements with unsaturated polyester monomers comprising over 95% by weight.
Unsaturated Polyester Graphic Overlay Film
Transparent flexible film from unsaturated polyester used for membrane switches and control panel overlays in electronics. Falls under HTS 3920.63.10.00 due to its noncellular, flexible nature and pure unsaturated polyester composition without reinforcement. Ideal for applications requiring durability and printability.
Clear Flexible Polyester Window Film
Optical-grade flexible unsaturated polyester film for privacy window applications and temporary coverings. Meets HTS 3920.63.10.00 criteria: flexible, noncellular, pure unsaturated polyester composition without lamination. Provides UV protection and clarity.
Unsaturated Polyester Electrical Insulation Film
High dielectric strength flexible film from unsaturated polyester for insulating electrical components and motors. HTS 3920.63.10.00 due to flexible, noncellular construction and polymer meeting 95% purity threshold. Critical for Class F insulation systems.
Flexible Unsaturated Polyester Packaging Foil
Thin gauge flexible foil-like sheets of unsaturated polyester used in food packaging and lidding films. Classified HTS 3920.63.10.00 as noncellular flexible polyester foil, not reinforced, meeting strict monomer content rules. Provides barrier properties for perishables.