- A blade having high and/or low butts used to actuate the movement of latch knitting needles.
- Part of a dobby head designed to serve as a lever in the operation of the harness of a loom.
- A woven or felted tubular sleeve for covering and shrinking on a machine roll.
- A short coat.
- In polymer manufacture, an external shell around a reaction vessel. For example, jacketed vessels are used when heat-transfer medium is circulated around the vessel.
JACQUARD: A system of weaving that utilizes a highly versatile pattern mechanism to permit the production of large, intricate designs. The weave pattern is achieved by a series of punched cards. Each card perforation controls the action of one warp thread for the passage of one pick. The machine may carry a large number of cards, depending upon the design, because there is a separate card for each pick in the pattern. Jacquard weaving is used for tapestry, brocade, damask, brocatelle, figured necktie and dress fabrics, and some floor coverings. A similar device is used for the production of figured patterns on some knit goods.
- A fabric used for suiting, draperies, or upholstery characterized by a series of faint stripes formed by dark, medium, and light yarns of the same color.
- A term describing carpets having a faint striped effect.
J-CUT: In tufting cut-pile carpet constructions, uneven cutting of the loops caused by poor adjustment of knives and hooks or excessive tension.
JEAN: Cotton twill fabric, similar to denim, but lighter and finer, in a 2/1 weave for sportswear and linings.
JERK-BACK: See PULLED-IN FILLING.
JERKED-IN FILLING: See PULLED-IN FILLING.
- A circular-knit or flat-knit fabric made with a plain stitch in which the loops intermesh in only one direction. As a result, the appearance of the face and the back of a jersey fabric is wholly different.
- A tricot fabric made with a simple stitch, characterized by excellent drape and wrinkle recovery properties.
- A device used to bulk yarns by introducing curls, coils, and loops that are formed by the action of a high velocity stream, usually of air or steam. (Also see TEXTURING, Air Jet Method.)
- See SPINNERET.
JET LOOM: A shuttleless loom that employs a jet of water or air to carry the filling yarn through the shed. (Also WEFT INSERTION.)
JUTE: A bast fiber used for sacking, burlap, and twine as a backing material for tufted carpets.
JUTE BUTT: The flaggy lower end of jute fiber that is cut off in preparing jute for market. The fibers are 0.4 to 1 inch in length. Jute butts are used in twines and coarse bagging.
JUTE COUNT: The weight in pounds of a spindle of 14,400 yards of yarn.