Materials (fabrics or yarns) comprising the back of the carpet as opposed to the carpet pile or face.
(1) Primary back-in tufting, a woven or nonwoven fabric in which the pile yarn is inserted by the tufting needles. Usually woven or nonwoven polypropylene or woven jute for carpet and often cotton duck for scatter rugs.
(2) Secondary back-Fabric laminated to the back of carpet to reinforce and increase dimensional stability. Usually woven jute or woven or non- woven polypropylene.
(3) Backings of woven carpets are the “construction yarns” comprising chain warp, stuffer warp, and shot or fill which are interwoven with the face yarn during carpet fabric formation.
