4807.00 - Composite paper and paperboard (made by sticking flat layers of paper or paperboard together with an adhesive), not surface-coated or impregnated, whether or not internally reinforced, in rolls or sheets:

HTS code 4807.00 classifies composite paper and paperboard specifically constructed by adhering multiple flat layers of paper or paperboard together with an adhesive. This category excludes products that are surface-coated or impregnated with other materials, or those that are internally reinforced unless this reinforcement is integral to the paper structure itself. The key characteristic here is the lamination of paper layers without additional surface treatments, distinguishing it from coated or impregnated papers that fall under different classifications.

Within the broader Chapter 48, which covers all paper and paperboard products, 4807.00 stands apart from single-ply papers, creped papers, or papers produced by other distinct manufacturing processes. Its focus on a laminated structure using adhesives as the primary means of construction is the defining feature. Unlike many other paper categories, the inherent strength and barrier properties are derived solely from the multiple adhered layers of cellulosic material.

The subcategories within 4807.00 further refine this classification based on specific material treatments. For instance, 4807.00.10.00 specifically addresses composite paper and paperboard that have been internally laminated with bitumen, tar, or asphalt, indicating a specialized application. The "Other" subcategory typically encompasses all composite papers and paperboards that do not meet the specific criteria of the preceding subcategories, providing a catch-all for the remaining products within this composite paper classification.