Solid unbleached board

SUB construction:
1 - Coating
2 - Solid Unbleached Board
Not drawn to scale

Solid unbleached board, also known as SUB, is a grade of paperboard typically made of unbleached chemical pulp. Most often it comes with two to three layers of mineral or synthetic pigment coating on the top and one layer on the reverse side. Recycled fibres are sometimes used to replace the unbleached chemical pulp.^[1]

The main end use for this type of board is for packaging of frozen or chilled food, beverage carriers, detergent^[2] cereals, shoes, toys and others.^[3]

References

↑ Stora Enso (2008), Paperboard Guide
↑ Twede, Diana; Selke, Susan E. M. (2004), Cartons, Crates and Corrugated Board: Handbook of Paper and Wood Packaging Technology, Lancaster, PA: DasTech Publications
↑ Pro Carton (2009). "Types of Cartonboard". Retrieved 2009-09-22.

Paper

History Manufacture/Papermaking

Types	Blotting Bond Construction Cotton Rag Crêpe Display Dó Asphalt Glassine India Korean Kraft Laid Manila Newsprint Oatmeal Onionskin Origami Baking Building Rice Rolling Security Seed Copy Tar Thermal Tissue Tracing Transfer Tree-free Wallpaper Washi Waterproof Wax Wood-free Wove Writing

Materials	Fiber crop Paper chemicals Papyrus Wood pulp Algal bloom (Shiro alga carta)

Specifications	Grammage Density Size Units of paper quantity Surface chemistry of paper Wet strength

Manufacture and Process	Bleaching of wood pulp Calender Conical refiner Deinking Paper pollution Environmental impact of paper Hollander beater Kraft process Organosolv Paper cut Paper machine Paper recycling Soda pulping Sulfite process

Industry	Paper mill List of paper mills In Europe In Canada In India In Japan In the United States

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Solid unbleached board

See also

References