The carpet is produced on a loom quite similar to woven fabric. The pile can be plush or Berber. Plush carpet is a cut pile and Berber carpet is a loop pile. There are new styles of carpet combining the two styles called cut and loop carpeting. Normally many colored yarns are used and this process is capable of producing intricate patterns from predetermined designs. These carpets are usually the most expensive due to the relatively slow speed of the manufacturing process.
On a knotted pile carpet, the structural weft threads alternate with a supplementary weft that rises at right angles to the surface of the weave.Both vertical and horizontal looms have been used in the production of European and oriental carpets. The warp threads are set up on the frame of the loom before weaving begins. A number of weavers may work together on the same carpet. A row of knots is completed and cut. The knots are secured with rows of weft. The warp in woven carpet is usually cotton and the weft is jute