Epoxy Resin

In textiles a compound used in durable-press applications for white fabrics. It provides chlorine resistance but causes loss of tensile strength.

Equivalent Single

The number of a plied yarn or cord determined by the standard methods used for singles yarns.

Equivalent Single Yarn Number

See YARN NUMBER EQUIVALET SINGLE. © 2001 Celanese Acetate LLC

Ermine fibre (hair)

Fibre from the ermine (Mustela erminea).

Eskimo

A piece-dyed, double-faced, all-wool over coating with a 5-end satin face and twill back.

Estamenes

A loosely woven 2x2 twill worsted dress fabric with a rough finish.

Ester Interchange

See TRANSESTERIFICATION.

Esterification

The chemical process of combining an acid and an alcohol to form an ester. Cellulose acetate is an ester formed by the reaction of acetic acid and the hydroxyl groups of cellulose. Polyethylene terephthalate the most common fiber-forming polyester is a product of esterification of teraphthalic acid with ethylene glycol.

Esthetics

See AESTHETICS.

Ethylene

A petroleum derivative (C2H4) that is the raw material for polyethylene.

Ethylene Glycol

A viscous sweet colorless liquid (CH2OHCH2OH). Principal uses are as an intermediate in the manufacture of polyester fibers and as automobile antifreeze.

Evenness Testing

Determination of the variation in weight per unit length and thickness of yarns or fibers aggregates such as roving sliver or top.

Excessive Clearer Waste

A higher that normal amount of short and regular fibers that become attached to the drafting rolls and are transferred to the clearer brushes to accumulate in abnormal amounts until they are removed manually.

Exfoliation

All inherent fault in silk only apparent after degumming or dyeing. It is characterized by fine fibrils or fibrillae that become separated from the filament, so giving a speckled, dishevelled appearance.

Exhaustion

The proportion of dye or other substance taken up by a substrate at any stage of a process to the amount originally available.