Pleating
accordion pleat one of a series of narrow, evenly spaced parallel pleats withalternating raised and recessed folds set into cloth or other material, usually by a commercial pleating machine.
box pleat a double pleat, with the material folded under at each side.
inverted pleat a reverse box pleat, having the flat fold turned in.
knife pleat a sharply creased narrow pleat, usually one of a series folded inthe same direction.
partial pleat softer, less solid pleats.
projecting pleats folds lifted from surface of fabric and and arranged so they stand out from fabric itself.
wrinkled pleats irregular ridges made by securing damp bunched fabric and leaving it to dry
.