3921.90.25.10 - Over 70 percent by weight of plastics

This HTS classification, 3921.90.25.10, specifically covers "Other plates, sheets, film, foil and strip, of plastics" that are combined with textile materials and weigh more than 1.492 kg/m². The key distinguishing factor for this subcategory is that the textile component is predominantly composed of man-made fibers by weight, exceeding any other single type of textile fiber. These products are essentially composite materials where the plastic film or sheet is laminated or otherwise combined with a textile backing or reinforcement.

This category is distinct from its sibling, 3921.90.25.50, which is designated as "Other" and would likely encompass composite plastic sheets and films combined with textile materials that do not meet the specific man-made fiber predominance criteria by weight. The 1.492 kg/m² weight threshold is a critical determinant, ensuring these are substantial composite materials rather than lighter constructions.

As this is a leaf node in the HTS database, there are no further subcategories. Classification under this heading signifies that the product has met all preceding criteria: it is an "other" plate, sheet, film, foil, or strip of plastic (not specifically covered by earlier headings within 3921), it is combined with textile materials, its weight exceeds 1.492 kg/m², and the textile component is primarily man-made fibers. Examples might include heavy-duty reinforced tarpaulins, certain types of industrial membranes, or specialized coated fabrics where the plastic element is significant and the textile reinforcement is predominantly synthetic.