HI BULK
Kappa Board — Rigid Box

HI BULK

Maximum bulk. Minimum weight.

HI BULK is a high-bulk greyboard engineered for rigid box making and premium packaging. Its exceptional bulk-to-weight ratio delivers structural rigidity without adding unnecessary mass — ideal for luxury packaging converters.

Engineered for performance

HI BULK is formulated with a carefully controlled fibre blend to achieve maximum bulk at a given grammage. This means your rigid boxes are lighter, easier to handle, and more cost-effective — without sacrificing the structural integrity your brand demands.

The board's surface is optimised for lamination and foiling, making it the preferred choice for luxury cosmetics, confectionery, and gift packaging converters across India.

Available in a comprehensive range of thicknesses from 1.0 mm to 4.0 mm, HI BULK is produced under strict caliper and moisture controls at our Mangundampatti facility.

Key Features

  • High bulk-to-weight ratio for lightweight rigid boxes
  • Excellent surface for lamination, foiling, and embossing
  • Consistent caliper across the full sheet
  • Low moisture content for stable converting performance
  • Suitable for high-speed die-cutting and creasing
  • Available in custom sheet sizes
  • ISO 9001 aligned quality management
  • Manufactured from recycled fibre blends
SKU catalogue

Order by SKU / Thickness

SKUThicknessGSMSizeSheets/PackWeight/Pack
BU10341.0 mm6501040 × 790 mm10053.4 kg
BU12341.2 mm7801040 × 790 mm8554.5 kg
BU14341.4 mm9101040 × 790 mm7052.3 kg
BU15341.5 mm9751040 × 790 mm6552.0 kg
BU18341.8 mm11701040 × 790 mm5552.9 kg
BU20342.0 mm13001040 × 790 mm5053.4 kg
BU22342.2 mm14301040 × 790 mm4552.9 kg
BU24342.4 mm15601040 × 790 mm4051.3 kg
BU25342.5 mm16251040 × 790 mm4053.4 kg
BU28342.8 mm18201040 × 790 mm3552.3 kg
BU30343.0 mm19501040 × 790 mm3556.0 kg
BU35343.5 mm22751040 × 790 mm3056.0 kg

Standard size: 31×41 inches (790×1040 mm). Custom sizes available on bulk order.

Applications

Where HI BULK performs best

Luxury Rigid Boxes

Luxury Rigid Boxes

Premium gift boxes for cosmetics, jewellery, and fashion brands.

Confectionery Packaging

Confectionery Packaging

Chocolate and sweet boxes requiring structural rigidity.

Photo Albums

Photo Albums

Hard cover boards for photo albums and memory books.

Display Packaging

Display Packaging

Retail display boxes and point-of-sale packaging.

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
Base Grammage (IS 1060 / ISO 536)670 gsm/mm (bulk grade basis)
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%
SurfaceNatural grey, uncoated — lamination and foiling ready
Sheet SizeCustom cut to order
PackingShrink-wrapped pallets
MOQ1 MT

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

Interested in HI BULK?

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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