wood pulp


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wood pulp:

see paperpaper,
thin, flat sheet or tissue made usually from plant fiber but also from rags and other fibrous materials. It is used principally for printing and writing on but has many other applications. The term also includes various types of paperboard, such as cardboard and wallboard.
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Wood Pulp

 

a fibrous mass obtained by mechanically abrading pulpwood or chips on the revolving stone of a pulper or other grinding equipment and adding water. It is a semifinished product in the manufacture of paper, cardboard, and wood-fiber boards. Wood pulp was first produced in the 1840’s by the German weaver F. G. Keller, and it is called white, brown, or chemical, depending on how it is produced. White wood pulp is obtained from wood without further processing; brown pulp is first steamed under pressure in boilers; and chemical wood pulp is made from wood processed by solutions of caustic soda, monosulfite, or sodium bicarbonate (sometimes under pressure and at temperatures of up to 150°C). Wood pulp is widely used because of its low cost in comparison with cellulose or semipulp made from rags and also because of its ability to enhance the printing properties of paper (smoothness, opacity, ink absorption). Among the disadvantages of wood pulp are its relatively low mechanical strength and insufficient whiteness, as well as the inability of these properties to withstand the effects of sunlight, moisture, and heat.

A. V. VASENKO

wood pulp

[′wu̇d ‚pəlp]
(anatomy)

wood pulp

1. wood that has been ground to a fine pulp for use in making newsprint and other cheap forms of paper, and in the production of hardboard
2. finely pulped wood that has been digested by a chemical, such as caustic soda, and sometimes bleached: used in making paper
References in periodicals archive ?
A carded web pre-bonded by spunlacing in a first processing stage, or respectively not prebonded in the case of other product applications, is sprayed with wood pulp according to the airlaid technology by means of a DanWeb-forming head.
This recommendation, a so-called chlorine "ban," was widely viewed as a bow to Greenpeace and other environmental groups that are strongly against the use of chlorine as a bleaching agent for wood pulp.
Mechanical market wood pulps are also poised for further growth in volume terms.
In fact, the review was so broad that two other federal government agencies, the FDA and the Consumer Product Safety Commission (CPSC), were called upon to develop risk assessments for products that contain chlorine bleached paper and/or wood pulp.
AFE is likely to assume the upgrading scheme of US$500m for the modernization of the 270km route between Montevideo and Paso de Los Toros in order to build capacity to annually transport wood pulp of 2 million tonnes.
Already a common flooring component, wood pulp contains tiny cellulose nanofibers.
Yes, cellulose can come from wood pulp but it can also come from asparagus or any plant material.
Production and consumption trends of China's pulp and paper products are discussed as well as imports of two principal raw materials: wood pulp and recovered paper.
A bodily fluid-absorbent structure, comprising liquid-absorbent material formed of an aggregation of fluff wood pulp fibers and having an inner surface and an outer surface, a liquid-pervious sheet covering said inner surface, and a liquid-pervious or liquid-impervious sheet covering said outer surface, wherein said aggregation has a basis mass in a range of 150 to 500g/[m.
Black liquor is the term for the waste product from the kraft process of wood pulp milling.
Wood pulp, even near its historical high price, *still costs less than 50% of the least expensive petroleum-based fiber used in wipes.