20pt SUS Solid Unbleached Sulfate Board Brown Virgin Kraft Board

20pt SUS (Solid Unbleached Sulfate) board is an uncoated virgin kraft paperboard produced from high-quality unbleached softwood sulfate pulp. It offers a natural brown color, outstanding stiffness, excellent tear resistance and puncture strength, making it ideal for heavy-duty folding carton applications.

Compared with SBS board, SUS delivers superior mechanical performance at a competitive cost. It runs smoothly on die-cutting, folding and gluing machines, with stable caliper and consistent sheet-to-sheet quality. Eco-friendly, recyclable and plastic-free, it matches the growing demand for sustainable packaging.

• Good stiffness with high tear and burst resistance
• Stable caliper, easy for die cutting, creasing and folding
• Recyclable and food-safe available for dry food contact
• Consistent bulk and reliable converting performance

• Dry food folding cartons (nuts, grains, baked snacks)
• Pet food and pet treat packaging boxes
• Beverage carriers and drink holders
• Hardware, hand tools and accessory packaging
• Eco natural gift boxes

• Sheet or roll format
• Custom sheet size / custom roll width
• Food contact compliant grade upon request
• Other caliper SUS grades: 14pt, 16pt, 18pt, 24pt, 28pt available
• CUK (Coated SUS) version on request

• Free sample provided
• Port of loading: Guangzhou port, Shenzhen port
• MOQ: 3 tons
• EXW, FOB, CIF, CFR, FCA, DDP trade terms are available