Intermittent Pattern

A pattern occurring in interrupted sequence.

Internal Dye Variability

The change from point to point in dye uniformity across the diameter and along the length of the individual filaments. Affects appearance of the dyed product and is a function of fiber dye dyeing process and dyebath characteristics.

International Gray Scale

A scale distributed through AATCC that is used as a comparison standard to rate degrees of fading from 5 (negligible or no change) to 1 (severe change). The term is sometimes applied to any scale of quality in which 5 is excellent and 1 is poor.

Intimate Blend

A technique of mixing two or more dissimiliar fibers in a very uniform mixture. Usually the stock is mixed before or at the picker.

Intrinsic Viscosity

Ratio of the specific viscosity (R.V.-1) of a solution of known concentration to the concentration of solute extrapolated to zero concentration. Also called the limiting viscosity number. It is directly proportional to the polymer-average molecular weight.

Inturned welt

A welt consisting of a double fold of plain fabric made on a circular stocking machine. Sinker loops from one of the first few courses are retained while the welt fabric is knitted and are later intermeshed with alternate needle loops of a subsequent course. (sub category of welt (knitting))

Inverted pleat

Two opposed pleats meeting on the face of the material.(sub category pleats)

Invoice mass

The mass, however determined, of a consignment of a textile material, which is declared on the invoice. It is usually numerically equivalent to the commercial mass.

Ionomer

A polymer having covalent bonds between the constituents of the long-chain molecules and ionic bonds between the chains.

Irish lawn

A lawn fabric produced from fine linen yarns.

Irish linen

A woven fabric produced in Ireland from 100% flax yam.

Irish linen yarn

100% flax yam spun in Ireland.

Irish poplin

A poplin made from a dyed pure silk organzine warp and a three-fold genapped fine worsted weft. It is a silk-face and silk-back fabric, the weft being completely covered by the warp. The fabric is usually handwoven and is frequently given a moir'e finish.

Islands-In-The-Sea

A type of component fiber described as multipleinterface or filament-in-matrix. The “island” are fibrils of one or more polymers imbedded in the “sea” (or matrix) consisting of another polymer. The matrix is often dissolved away to leave filaments of very low denier per filament. These © 2001 Celanese Acetate LLC fibers have been used in ion-exchange products and in imitation fur products as well as to produce textile products with a different hand.

Islands-in-the-sea bicomponent fibre

This configuration has similar uses to the core-sheath type or may be used as an intermediate in the production of other specialized types of fibre such as microfibres or porous fibres where one component is dissolved away leaving the other (Sub Category of bicomponent fibre)