20pt Natural Brown SUS Solid Unbleached Sulfate Board for Heavy-Duty Packaging

20pt Natural Brown SUS Solid Unbleached Sulfate Board is a heavy-duty, virgin-fiber kraft board engineered for demanding packaging applications. With a 20pt caliper and natural unbleached brown finish, it delivers high strength, moisture resistance, and reliable runnability on automated converting lines.

• Beverage Packaging: Bottle and can multipacks, beverage carriers.
• Frozen & Dry Food: Frozen food cartons and dry food packaging.
• Heavy-Duty Retail: Hardware, auto parts, and household products.
• Electronics: Protective packaging for consumer electronics.
• Displays & Structural Packaging: Rigid displays and heavy-duty folding cartons.

• High Strength & Durability: Made from virgin unbleached kraft pulp with long softwood fibers, offering superior tear resistance, puncture resistance, and edge-crush strength compared to bleached boards.
• Natural Kraft Appearance: The unbleached core retains a natural brown color, conveying an authentic, eco-friendly, and robust brand image.
• Excellent Wet Strength & Moisture Resistance: Built-in wet strength options make it suitable for cold, damp, or frozen environments.
• Good Stiffness & Runnability: The 20pt caliper provides reliable performance on automated folding, gluing, and die-cutting lines.

• Roll packing with kraft paper and PE film for waterproof and moisture-proof protection, also packed on a strong wood pallet.
• Sheet packing with kraft paper and PE film for waterproof and moisture-proof protection, also packed on a strong wood pallet.
• Custom packing accepted according to customer requirements.
• Jumbo roll sizes are also available, such as 1500mm and 2000mm roll widths.