Unbleached Board

Solid Unbleached Board (SUB) is a type of paperboard generally produced from unbleached chemical pulp. It usually features two to three layers of mineral or synthetic pigment coating on the front side, with a single coating layer on the back. In some cases, recycled fibers are incorporated to substitute the unbleached chemical pulp.

Known for its natural brown color and high strength, Solid Unbleached Sulphate (SUB) is widely used in packaging applications where durability, sustainability, and cost-effectiveness are key considerations.

Its strength and resilience make it ideal for heavy-duty packaging, while its eco-friendly nature appeals to brands and consumers focused on sustainability. This board is primarily used in packaging for products such as frozen or refrigerated foods, beverage carriers, detergents, cereals, shoes, toys, and more.

Specifications:

Size (Sheet & Roll): Fully customizable
Material grade (GSM)/Grammage (Basis Weight): 220 GSM to 450 GSM
Thickness: 0.4 mm to 1.0 mm, depending on the grammage
Stiffness in Machine Direction (MD): 300 to 1000 mN
Stiffness in Cross Direction (CD): 150 to 500 mN
Tensile Strength in Machine Direction (MD): 4.0 to 8.0 kN/m
Tensile Strength in Cross Direction (CD): 2.0 to 5.0 kN/m
Burst Strength: 200 to 600 kPa, which ensures the board can withstand pressure
Moisture Content: 6% to 9%
Brightness: Generally lower than bleached boards, around 70% to 85%
Porosity: Low porosity to ensure quality printing with minimal ink absorption
Material: Unbleached virgin wood pulp
Applications: Frozen & Chilled Food Packaging, Beverage Carriers, Detergent & Cereal Boxes
Recyclability: Fully recyclable and biodegradable
Origin: India/China

Duplex board coated uncoated with white and grey back in reels and sheets in standard sizes

Stock lots and Job lots of Fluting paper, Kraft liner boards,Chromo paper, Art paper, Lwc paper, Coated and uncoated SBS, Thermal paper, Release paper. Uncoated wood free

We produce high quality insulation pressboard (or called transformer board, pre-compressed pressboard), which is mainly applied to produce oil-immersed transformer as insulation material.

Specification:
Item no: h4, h41
Thickness (mm): 1.0 1.5 2.0 2.5 3.0 4.0 5.0 6.0 7.0 8.0
Standard size (mm): 4400x2200 (customer size is available)
Rated voltage: 110kv-1000kv
Quality standard: iec 60641-2:2004
Package: pallet

Usage:
As insulation material, it is widely used in oil-immersed transformer, reactor, capacitor, mutual inductor, etc.

Our unique advantages:

1. High purity raw material:
Canada 100% unbleached sulfate wood pulp

2. Most advanced technology in china:
* expert: we hired authoritative japanese expert of 36 years of insulation pressboard production experience. And also we engaged famous expert in china.
* machine: hot-press machine, stainless steel production line, on-line metallics detector are most advanced in china.
* water treatment: iec standard, electrical conductivity<15ªs/cm

3. Strict quality control:
* thickness can be accurately control (1.6mm board less than ª5%)
* best index in china: high density/mechanical strength/ electrical strength low compression coefficient
* we use the same detecting instrument with national quality certification authority, and we test every batch.

4. Reasonable price:
(welcome to quote!)

5. First-rate service:


Wood pallet, 3000kg/pallet

Kraft Liner & White Top Kraft Liner Graphic Board

Kraft Liner is defined as one of the types of packaging paper or paperboard, whose fiber content has no less than 80% Virgin fibers obtained by the chemical sulfate or soda processes. Kraftliner is a cardboard with a minimal presence of secondary origin fibers in its structure. Universally, kraftliner composed entirely of kraft pulp, is commonly called topliner. In addition to the abovementioned types of two-layer corrugated fiberboard, there is one more type â?? testliner.
Kraft paper is a strong, durable and reliable material that has many purposes and is widely used across many different industries. Some of the most common uses for kraft paper include wrapping individual products for protection, economical void fill, palette lining and more.
White top kraftliner is a two-ply product. Top ply consists of pure bleached hardwood kraft fibres and the base ply is made of unbleached softwood kraft fibres. This grade offers excellent printability characteristics