3920.91.00.00 - Of poly(vinyl butyral)

This HTS category, 3920.91.00.00, specifically classifies plates, sheets, film, foil, and strip made from poly(vinyl butyral). These materials are noncellular and are not reinforced, laminated, supported, or otherwise combined with other materials, adhering to the broader scope of Heading 3920 which covers such plastic articles. Poly(vinyl butyral) is a thermoplastic resin derived from polyvinyl alcohol and butyraldehyde, known for its adhesive properties and flexibility, often utilized in applications requiring good bonding and impact resistance.

Distinguishing this category from its siblings is crucial for accurate classification. While all fall under "Of other plastics" within the "Other plates, sheets, film, foil and strip, of plastics" heading, the specific polymer differentiates them. For instance, 3920.92.00.00 covers articles of polyamides (like nylon), 3920.93.00.00 pertains to amino-resins (such as melamine or urea resins), and 3920.94.00.00 applies to phenolic resins. Therefore, the primary determinant for classification under 3920.91.00.00 is the presence of poly(vinyl butyral) as the sole or primary plastic component in the specified forms.

As a leaf node, this HTS code does not have further subcategories. Classification within 3920.91.00.00 is final for products meeting the criteria of being made of poly(vinyl butyral) in the form of plates, sheets, film, foil, or strip, and not otherwise combined with other materials. Examples of goods that would fall here include flexible films of poly(vinyl butyral) used as interlayers in safety glass or as specialty adhesive tapes where the film itself is the primary component.