Binding - A band or strip sewn over a carpet edge to protect, strengthen or decorate the edge.
Broadloom - A term used to denote carpet produced in widths wider than 6 feet. Broadloom is usually 12 feet wide, but may also be 13'6" and 15 feet wide.
Construction - The manufacturing method (i.e. tufted, woven) and the final arrangement of fiber and backing materials as stated in its specification.
Cushion - Any kind of material placed under carpet to provide softness and adequate support when it is walked upon. Carpet cushion provides a softer feel underfoot and provides added acoustical and insulation benefits and longer wear life for the carpet. In some cases, the carpet cushion is attached to the carpet when it is manufactured. Also referred to as "padding" or "underlay," although "cushion" is the preferred term. Cushion under most residential carpet should be a thickness no greater than 7/16".
Cut Pile - A carpet fabric in which the face is composed of cut ends of pile yarn.
Density - Refers to the amount of pile yarn in the carpet and the closeness of the tufts. In general, the denser the pile, the better the performance.
Frieze - Pronounced "free-zay," this tightly twisted yarn gives carpet a rough, nubby appearance.
Gauge - The distance between two needle points expressed in fractions of an inch. Applies to both knitting and tufting.
Hand - The tactile aesthetic qualities of carpet and textiles, how it feels to the hand.
Heat setting - The process that sets the twist by heat or steam, enabling yarns to hold their twist over time. Important in cut pile carpet. Most nylon, olefin and polyester cut pile carpets are heat-set.
Level Loop - A carpet construction in which the yarn on the face of the carpet forms a loop with both ends anchored into the carpet back. The pile loops are of substantially the same height and uncut, making a smooth, level surface.
Luster - Brightness or sheen of fibers, yarns, carpet or fabrics.
Pile - The visible surface of carpet consisting of yarn tufts in loop and/or cut configuration. Sometimes called "face" or "nap".
Plush - Luxuriously smooth-textured carpet surface in which individual tufts are only minimally visible and the overall visual effect is that of a single level of yarn ends. This finish is normally achieved only on cut-pile carpet produced from non-heat-set singles spun yarns by brushing and shearing. Sometimes called "velvet-plush."
Ply - 1. A single-end component in a plied yarn. 2. The number that tells how many single ends have been ply-twisted together to form a plied yarn, e.g. two-ply or three-ply.
Resilience - Ability of carpet pile or cushion to recover original appearance and thickness after being subjected to compressive forces or crushing under traffic.
Seams - In a carpet installation, the line formed by joining the edge of two pieces of carpet by the use of various seaming tapes, hand sewing or other techniques.
Serging - A method of finishing edges of area rugs by use of heavy, colored yarn sewn around the edges in a close, overcast stitch.
Soil Retardant - A chemical finish applied to fibers or carpet surfaces that inhibits attachment of soil.
Stitches - Stitches per inch. Number of yarn tufts per running inch of a single tuft row in tufted carpet.
Tuft Bind - Force required to pull a tuft from the carpet.
Tufted - Carpet manufactured by the insertion of tufts of yarn through a carpet-backing fabric, creating a pile surface of cut and/or loop ends.
Twist - The winding of the yarn around itself. Should be neat and well-defined. A tighter twist provides enhanced durability.
Yarn Ply - The number of single yarns twisted together to form a plied yarn.