Solid unbleached board, also known as SUB, is a grade of
paperboard
Paperboard is a thick paper-based material. While there is no rigid differentiation between paper and paperboard, paperboard is generally thicker (usually over 0.30 mm, 0.012 in, or 12 Inch#equivalences, points) than paper and has certain ...
typically made of unbleached chemical pulp. Most often it comes with two to three layers of mineral or synthetic pigment
coating
A coating is a covering that is applied to the surface of an object, usually referred to as the Substrate (materials science), substrate. The purpose of applying the coating may be decorative, functional, or both. Coatings may be applied as liquid ...
on the top and one layer on the reverse side. Recycled fibres are sometimes used to replace the unbleached chemical pulp.
The main end use for this type of board is for packaging of
frozen or
chilled food Chilled food is food that is stored at refrigeration temperatures, which are at or below . The key requirements for chilled food products are good quality and microbiological safety at the point of consumption. They have been available in the Unite ...
,
beverage
A drink or beverage is a liquid intended for human consumption. In addition to their basic function of satisfying thirst, drinks play important roles in human culture. Common types of drinks include plain drinking water, milk, juice, smoothies a ...
carriers,
detergent
A detergent is a surfactant or a mixture of surfactants with cleansing properties when in dilute solutions. There are a large variety of detergents, a common family being the alkylbenzene sulfonates, which are soap-like compounds that are more ...
cereals
A cereal is any grass cultivated for the edible components of its grain (botanically, a type of fruit called a caryopsis), composed of the endosperm, germ, and bran. Cereal grain crops are grown in greater quantities and provide more food en ...
,
shoes
A shoe is an item of footwear intended to protect and comfort the human foot. They are often worn with a sock. Shoes are also used as an item of decoration and fashion. The design of shoes has varied enormously through time and from culture t ...
,
toys
A toy or plaything is an object that is used primarily to provide entertainment. Simple examples include toy blocks, board games, and dolls. Toys are often designed for use by children, although many are designed specifically for adults and pet ...
and others.
See also
*
Folding boxboard
Folding boxboard, also referred to as FBB or by the DIN Standard 19303 codes of GC or UC, is a paperboard grade made up of multiple layers of chemical and mechanical pulp. This grade is made up of mechanical pulp in between two layers of chemical p ...
*
Solid bleached board
Solid bleached board (SBB) or solid bleached sulphate (SBS) is a virgin fibre grade of paperboard.
This grade is made purely from bleached chemical pulp and usually has a mineral or synthetic pigment coated top surface in one or more layers (C1S ...
*
White lined chipboard
White-lined chipboard (also referred to as WLC, GD, GT or UD) is a grade of paperboard typically made from layers of Paper recycling, waste paper or Recycling, recycled fibers. Most often it comes with two to three layers of coated paper, coating o ...
References
Paperboard
Coated paper
Paper
{{Material-stub