SOWJI DUO TONE promotional box application
Kappa Board

DUO TONE

Two-tone surface. One exceptional board.

DUO TONE is a premium kappa board engineered with a distinctive two-tone surface finish — one side bright white, the other natural grey. Designed for packaging converters and brand owners who demand visual contrast, superior printability, and consistent caliper in every sheet.

1.0–4.0 mm
Thickness Range
700–1500 gsm
Grammage Range
White / Grey
Surface Finish
ISO 9001
Quality Standard

Engineered for contrast and performance

DUO TONE combines a bright white coated top surface with a natural grey reverse — giving packaging designers the flexibility to use both sides creatively. The white surface delivers excellent ink holdout and lamination adhesion, while the grey reverse provides a premium uncoated feel.

Manufactured at our Sivakasi facility using virgin and recycled fibre blends, DUO TONE boards are produced under strict caliper and moisture controls to ensure consistent performance on high-speed converting lines.

Available in a wide range of thicknesses and grammages, DUO TONE is the preferred choice for rigid box makers, premium retail packaging, and display board applications.

Key Features

  • Bright white coated top surface for superior printability
  • Natural grey uncoated reverse for premium tactile feel
  • Excellent lamination adhesion on both surfaces
  • Consistent caliper across the full sheet
  • Low moisture content for stable converting performance
  • Available in custom sheet sizes and thicknesses
  • Manufactured under ISO 9001 quality management
  • Suitable for high-speed die-cutting and creasing
Applications

Where DUO TONE performs best

Promotional Boxes

Promotional Boxes

Premium rigid boxes for cosmetics, confectionery, and gifting.

Photo Albums

Photo Albums

Hard cover boards for photo albums and memory books.

Display Hangers

Display Hangers

Retail display cards and product hangers for point-of-sale.

Slip Sheets

Slip Sheets

Interleaving and slip sheet applications in converting lines.

Specifications

Technical Specifications

PropertyValue
Thickness Range (IS 1060 Cl. 5.1)1.0 mm – 4.0 mm
Grammage (IS 1060 / ISO 536)700 – 1500 gsm
Caliper Tolerance (IS 1060 Cl. 5.1 / ISO 534)± 0.05 mm
Top SurfaceBright White (coated) — CIE Whiteness ≥ 80
Top Surface Smoothness (ISO 5627 / Bekk)≥ 50 s — excellent ink holdout
Reverse SurfaceNatural Grey (uncoated)
Burst Factor (IS 1060 Cl. 5.3 / ISO 2758)≥ 14 kPa·m²/g
Taber Stiffness — MD (ISO 2493)≥ 10 mN·m (1.0 mm); ≥ 25 mN·m (2.0 mm)
Moisture Content (IS 1060 Cl. 5.5)6% – 9%
Ash Content (IS 1060 Cl. 5.6)≤ 20%
Sheet SizeCustom cut to order
PackingShrink-wrapped pallets
MOQ1 MT

All specifications are indicative. Contact our technical team for application-specific requirements.

Interested in DUO TONE?

Request a sample pack or speak to our technical team about your specific requirements.

Sowji Papers

India's trusted manufacturer of kappa boards and greyboards for industrial and export markets.

Head Office

4/703 D, Kongalapuram,
Sivakasi – 626189,
Tamil Nadu, India

Factory

5/311/15, OPR Nagar,
Near Indian Oil Petrol Pump,
Mangundampatti – 626131,
Sivakasi, Tamil Nadu, India

Certifications & Registrations

Make in India
Make in India
FSC
FSC
ISO 9001
ISO 9001
MSME
MSME
ZED
ZED
Udyam
Udyam
D-U-N-S
D-U-N-S
FIEO
FIEO
GST
GST
IEC
IEC

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