Machine-made rugs are woven on power looms operated either by hand, machine, or computer. The design and colors are determined, and a computer card is created which tells the computer which size and color it needs to produce. The loom is strung with a warp of jute, or sometimes cotton.
The rug is then woven using wool, nylon, polypropylene, olefin, or any other yarn suitable. Wool is the most durable and easiest to clean, as well as the most expensive. Some of the common synthetic materials are olefin, which is resilient and if heat set, is not as shiny as many others; polypropylene, which