Nonelastic Woven Tape

A woven narrow fabric weighing less than 15 ounces per square yard made principally of natural and/or manufactured fibers including monofilaments but not containing rubber or other similar elastic stands.

Nonflammable

Not capable of burning with a flame under specified test conditions.

Nonionic dye

A dye that does not dissociate electrolytically in aqueous solution.

Nonwoven

Opinions vary as to the range of fabrics to be classified as nonwovens. In general, they can be defined as textile structures made directly from fibre rather than yarn. These fabrics are normally made from continuous filaments or from fibre webs or batts strengthened by bonding using various techniques: these include adhesive bonding, mechanical interlocking by needling or fluid jet entanglement, thermal bonding and stitch bonding. (See also non-woven (carpets).)The controversial areas are:
(i) wet-laid fabrics, containing wood pulp, in which the boundary with paper is not clear;
(ii) stitch-bonded fabrics which contain some yarn for bonding purposes;(iii) needled fabrics containing reinforcing fabric.There are two standard definitions:1. Nonwovens are defined under ISO 9092:1988 as: 'A manufactured sheet, web or batt of directionally or randomly orientated fibres, bonded by friction, and/or cohesion and/or adhesion, excluding paper (see Note 1) and products which are woven, knitted, tufted, stitch-bonded incorporating binding yams or filaments, or felted by wet-milling, whether or not additionally needled (see Note 2). The fibres may be of natural or manufactured origin. They may be staple or continuous filaments or be formed in situ (see Note 3).
Note 1: To distinguish wet-laid nonwovens from wet-laid papers, a material shall be regarded as a nonwoven if
(i) more than 50% by mass of its fibrous content is made up of fibres (excluding chemically digested vegetable fibres) with a length to diameter ratio greater than 300; or, if the conditions in (i) do not apply, then
(ii) if the following conditions are fulfilled: (a) more than 30% by mass of its fibrous content is made up of fibres (excluding chemically digested vegetable fibres) with a length to diameter ratio greater than 300 and (b) its density is less than 0,40 g/CM3.
Note 2: The commonly used term neediefeit has given rise to some confusion since it restrictively associates needling with feiting or felt-like products. In fact, needling (mechanical interlocking of fibres by specially designed needles or barbs) is a major bonding method of nonwovens in its own right and is frequently the only consolidation route for nonwovens ranging from medical/hygienic disposables to spunlaid geotextiles.
Note 3.. The appearance of a relatively new group of products such as split-films, extruded meshes and nets, etc., presents a further borderline case between nonwovens and related technologies (in this case, plastics). For the purpose of this International Standard, products shall be regarded as nonwovens if they meet the requirements of the core definition above and where their main structural element can be regarded as fibrous, however derived.
Note 4: Viscose is not considered to be a chemically digested vegetable fibre.
Note 5.. Density may be determined using the methods specified in ISO 9073-1 and ISO 9073-2.'2. Nonwoven fabric is defined under ASTM D 1117-80 as: 'A textile structure produced by bonding or interlocking of fibers, or both, accomplished by mechanical, chemical, thermal, or solvent means and combinations thereof. Discussion: The term does not include paper or fabrics that are woven, knitted, or tufted.'

Nonwoven fabric

Opinions vary as to the range of fabrics to be classified as nonwovens. In general, they can be defined as textile structures made directly from fibre rather than yarn. These fabrics are normally made from continuous filaments or from fibre webs or batts strengthened by bonding using various techniques: these include adhesive bonding, mechanical interlocking by needling or fluid jet entanglement, thermal bonding and stitch bonding. (See also non-woven (carpets).)The controversial areas are:
(i) wet-laid fabrics, containing wood pulp, in which the boundary with paper is not clear;
(ii) stitch-bonded fabrics which contain some yarn for bonding purposes;(iii) needled fabrics containing reinforcing fabric.There are two standard definitions:1. Nonwovens are defined under ISO 9092:1988 as: 'A manufactured sheet, web or batt of directionally or randomly orientated fibres, bonded by friction, and/or cohesion and/or adhesion, excluding paper (see Note 1) and products which are woven, knitted, tufted, stitch-bonded incorporating binding yams or filaments, or felted by wet-milling, whether or not additionally needled (see Note 2). The fibres may be of natural or manufactured origin. They may be staple or continuous filaments or be formed in situ (see Note 3).
Note 1: To distinguish wet-laid nonwovens from wet-laid papers, a material shall be regarded as a nonwoven if
(i) more than 50% by mass of its fibrous content is made up of fibres (excluding chemically digested vegetable fibres) with a length to diameter ratio greater than 300; or, if the conditions in (i) do not apply, then
(ii) if the following conditions are fulfilled: (a) more than 30% by mass of its fibrous content is made up of fibres (excluding chemically digested vegetable fibres) with a length to diameter ratio greater than 300 and (b) its density is less than 0,40 g/CM3.
Note 2: The commonly used term neediefeit has given rise to some confusion since it restrictively associates needling with feiting or felt-like products. In fact, needling (mechanical interlocking of fibres by specially designed needles or barbs) is a major bonding method of nonwovens in its own right and is frequently the only consolidation route for nonwovens ranging from medical/hygienic disposables to spunlaid geotextiles.
Note 3.. The appearance of a relatively new group of products such as split-films, extruded meshes and nets, etc., presents a further borderline case between nonwovens and related technologies (in this case, plastics). For the purpose of this International Standard, products shall be regarded as nonwovens if they meet the requirements of the core definition above and where their main structural element can be regarded as fibrous, however derived.
Note 4: Viscose is not considered to be a chemically digested vegetable fibre.
Note 5.. Density may be determined using the methods specified in ISO 9073-1 and ISO 9073-2.'2. Nonwoven fabric is defined under ASTM D 1117-80 as: 'A textile structure produced by bonding or interlocking of fibers, or both, accomplished by mechanical, chemical, thermal, or solvent means and combinations thereof. Discussion: The term does not include paper or fabrics that are woven, knitted, or tufted.'

Notch

A small cut made on the edge of a garment part which is used as a guide during assembly . Notches may indicate the positions of darts, pleats, pockets, seams, style features, zips, gathers and balance marks.

Novelty Yarn

A yarn produced for a special effect. Novelty yarns are usually uneven in size varied in color or modified in appearance by the presence of irregularities deliberately produced during their formation. In singles yarns the irregularities may be caused by inclusion of knots loops curls slubs and the like. In plied yarns the irregularities may be effected by variable delivery of one or more yarn components or by twisting together dissimilar singles yarns. Nub and slub are examples of novelty yarns.

Novoloid (fibre) (generic name U.S.A.)

A manufactured fibre containing at least 85% by weight of a cross-linked novolac. (See also Classification Table, p.401.)
Note.. A novolac is a phenol-formaldehyde condensate of low molecular weight made using an excess of the phenol.

Novoloid Fiber

A manufactured fiber containing at least 85% by weight of a cross-linked novolac (FTC definition). Novoloid is flame resistant and nonmelting. Its primary use is in flame-protective garments and products.

Nozzle

1. The spout through which something is discharged i.e. oil in finish application or fibers in web laying. 2. A term sometimes used to refer to spinnerets.

Nub Yarn

A novelty yarn containing slubs beads or lumps introduced intentionally.

Nucleation

A process by which crystals are formed. Crystals form initially on minute traces of foreign substances that act as the nucleus then grow by external addition.

Nun's veiling

A light-weight, clear-finished, plain-weave fabric, usually made of worsted, silk, or cotton yarns and usually dyed black.

Nun’s Veiling

A soft lightweight plain-weave fabric that usually comes in black and white nun’s veiling is a rather flimsy open fabric but always of high quality. It may be made from fine woolen yarn or yarns spun from manufactured fibers such as nylon acrylic or polyester.

Nurse cloth

A coloured, woven, plain, matt or twill fabric, principally in stripes of blue and white, having approximately 27x20 threads/em with 25 tex cotton warp and weft. It is used for overalls and nurses' uniforms.