Non-woven carpets are a special type of fabric, divided into two categories: tufting and acupuncture. The tufted carpet is mainly made up of a needle and a spigot machine of a high-speed tufting machine. The carpet yarn is inserted into the polypropylene base fabric to form a loop layer of a certain height, or cut into a short velvet surface layer. The needle-punched carpet is obtained by applying a lancet having a front fork, and splicing the fibers of the carded web by the up-and-down motion, and the pattern of the geometric pattern is needled by the needle-punching machine.
Although the two carpets are made in different processes, they must be coated with an adhesive for backing, so a non-woven carpet back coating line will be needed, because carpeting is one of the important processes in carpet processing.The carpet processed by the non-woven carpet back coating line can not only fix the pile to the base fabric, but also fix the fibers to prevent the fibers from falling off.
It also keeps the size of the carpet stable; makes the carpet stiff and thick, improves the body bone; prevents the carpet from slipping, improves the grounding, prevents the corners from being rolled in the paving; and improves the strength and service life of the carpet. Among the sizing components used in the non-woven carpet back coating line, there are mainly adhesives, fillers, thickeners, accelerators and defoamers.
The main process of the non-woven carpet back coating line is sizing and baking, which requires uniform thickness and prevents the rubber from seeping out to the front of the carpet. It should be fully dried after gluing, and the tufted carpet must be glued a second time, not necessarily very dry, to increase the adhesion between the secondary gluing layers. The oven temperature is controlled at 160-170*C during baking, the actual temperature on the carpet is 140-150C, and the baking time is about 10 minutes.