PULP AND PAPER DICTIONARY
This page contains definitions of the terms, words and phrase commonly used in pulp and papermaking, printing, converting and paper trading.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
NATIVE LIGNIN The lignin as it exists in the lignocellulosic complex before separation.
NEUTRAL DETERGENT FIBER (NDF) Organic matter that is not dissolved after one hour of refluxing in a neutral detergent consisting of sodium lauryl sulphate and EDTA at pH 7. NDF includes hemicellulose, cellulose, and lignin.
NESTED EMBOSSING / LAMINATING nested embossing / laminating - One of several ways in which two layers or plies of embossed product are brought together in a laminating nip for a general process known as double-nip embossing laminating. Nested lamination means that the raised elements of each layer fit between each other, as in interdigitating , so that the tops of each element come into contact with the recessed area (or floor) of the opposing layer. Although it is theoretically possible to cause the embossing rollers to engage with each other (as in a nip) with nested embossing, most laminators run with a significant gap between the engraved embossing rollers to prevent any possible interference between the raised elements, just in case the rollers were not installed correctly. In normal practice, an adhesive glue is applied to the tips of the raised elements of only one of the two layers, and those tips are bonded to the floor of the other layer. Other versions of embossing laminating are pin-to-pin , and random registration.
NESTING inside a roll of product or a stack of product - Nesting is when the embossing elements of one layer in the product fit into the embossing elements of the layer below it, similar to the way that bowls are stacked on a shelf, which causes them to take up less space. This is normally a disadvantage in a consumer product. In a roll product, this usually occurs in alternating bands of nesting and anti-nesting
NEWSPRINT A paper manufactured mostly from mechanical pulps specifically for the printing of newspaper.
NIP Point where two rolls on the paper machine come in contact.
NITRATION PULPS High purity pulps that are reacted with nitric acid to form a class of chemical derivatives called cellulose nitrates. Cellulose nitrates are used in applications ranging from solvents to smokeless (gunpowder) propellants.
NON WOOD FIBRES Papermaking fibres derived from plants other than trees such as cotton, hemp, bagasse, jute, bamboo or straws.
NONWOVEN Fabric-like material made from long fibres, bonded together by chemical, mechanical, heat or solvent treatment.