Long lint or tufting carpet is named based on the type of production that is done by the method of tufting the fibers inside the carpet holding liner. This production method has made it possible to produce carpets with long fibers (up to 20 mm) in tufted carpets, unlike felt carpets. The attractive appearance of this type of carpet and the presence of a rug-like texture in it, along with its high durability and unique features of long lint carpet, has been able to direct the interior decoration of homes, offices, and even commercial centers to use this type of carpet.
Long lint carpet consists of four components: carpet lint, overlay lining, underlay lining, and adhesive. The method of producing tufting carpet is that the fibers are passed through the top lining by the needles of the tufting machine and are held by the hooks under the lining and a loop is created by turning the needles. Depending on the type of carpet, these loops may or may not have been trimmed that divide tufting carpet into three types: tufting loop, tufting cut, and tufting cut-loop, each of which carries a different sense and has slightly different properties. The tufting machine can plan the movement of the needles to create different designs and patterns on the long lint carpet. After weaving the carpet lint in the top liner, it is time to glue the bottom liner to the back of the carpet with a special adhesive. The quality of the adhesive and the used materials are among the factors that affect the strength of the tufting carpet and other issues such as the anti-allergy of the carpet. Tufting machines are used in the production of long lint carpets. Depending on the model, the tufting machine has 120 to 180 rows of needles, each needle being fed separately by a spindle, so the most common scene from a tufting carpet production line is a relatively large space filled with spindles of different colors on multi-stage shelves. Another point that may draw attention in the workshop of long lint carpet production is the large number of tubes that guide the threads from the spindles to the needles of the tufting machine.