Casein Bookbinding Glue
A traditional protein glue from casein used in bookbinding for spine adhesion and lay-flat properties in hardcover books. It qualifies for HTS 3501.90.20.00 as a casein glue, not covered by printing gelatin products in Chapter 49 per chapter notes.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as part of assembled bookbinding kits
Paper or cellulose-based binding materials in sets classify under Chapter 48, not adhesives alone.
If mixed with enzymes for enhanced flexibility
Enzyme-modified protein glues fall under heading 3507 for other protein preparations.
If packaged for retail painter or glazier use
Retail glazier's putty or painter's fillings shift to Chapter 32 if marketed for non-industrial glue use.
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Import Tips & Compliance
• Provide binding industry end-use letters to distinguish from general purpose glues and support classification
• Ensure no enzymatic pre-treatment additives to avoid overlap with excluded Chapter 34 products
Related Products under HTS 3501.90.20.00
Casein Particle Board Glue
Casein-fortified adhesive for pressing particleboard panels, enhancing moisture resistance in engineered wood products. HTS 3501.90.20.00 applies to this casein glue formulation, distinct from urea-formaldehyde resins.
Casein Plywood Laminate Glue
High-strength casein glue for laminating plywood veneers in aircraft and boat construction, valued for vibration resistance. Fits HTS 3501.90.20.00 as pure casein glue without excluded enzymatic additives.
Casein Model Aircraft Glue
Specialty casein adhesive for hobbyist balsa wood model kits, providing clear drying and sandable finish. Under HTS 3501.90.20.00 for casein glues, not retail toy sets.
Casein Woodworking Glue
A water-based adhesive made from casein protein derived from milk, specifically formulated for bonding wood in furniture and cabinetry applications. It falls under HTS 3501.90.20.00 as a casein glue, distinct from synthetic resin glues, due to its protein-based composition providing strong, reversible bonds ideal for woodworking.
Casein Label Adhesive
An industrial casein-based glue designed for high-speed labeling machines in bottling lines, offering quick tack and water resistance. Classified under HTS 3501.90.20.00 because it is a true casein glue, excluding synthetic or starch additives that would alter its heading.
Casein Furniture Assembly Glue
Heavy-duty casein glue for assembling wooden furniture frames, known for its strength and compatibility with steam bending processes. Under HTS 3501.90.20.00 as a specific casein glue, separate from hardened proteins in 3913.