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What is the comb and density of Persian machine carpet?
Each machine carpet has two types of characteristics: transverse and longitudinal
The transverse density of the carpet (comb) is the number of roots (color knots) in one meter of the width of the carpet, which is known as the comb. For example, a 500-comb rug means that 500 roots (color knots) are woven per meter of carpet width.
The combs that are common and on the market today are: 500 combs carpets -700 combs carpets- 1000 combs carpets- 1200 combs carpets- 1500 combs carpets
Persian Carpet length density (density) is the number of roots (color knots) in one meter of carpet length. For example, there are machine-made carpets with a density of 700, i.e. one meter of the length of the carpet is equivalent to 700 roots (dye knots) woven, the densities that are usually on the market are:
300-400-500-600-700-800-900-1000 - 1400-2550-3000-3200 wate.
Also, longitudinal density is different according to different methods of weaving Persian machine carpet)
The number of roots (color knots) per square meter of Persian carpet is called transverse density multiplied by longitudinal density. For example, if the number of color knots in width is equal to 700 knots and in length is equal to 900 color knots. Therefore, the number of roots (color nodes) per square meter is 630,000 = 900x700
Each Persian carpet has two types of density: transverse density and longitudinal density. The transverse density is called the comb. The comb is the number of knots per meter of carpet width. For example, a 700-comb rug means that 700 knots are woven per meter of carpet width. Density means the number of knotted knots per meter of length.
Common combs available in the market are 500-combs, 700-combs, 1000-combs, 1,200-combs and 1,500-combs.
The number of yarns per meter of carpet width is called transverse density or comb. The number of weft yarns per meter of Persian carpet length is called the longitudinal density. For example, a Persian carpet with a density of 1000 has a yarn equivalent to 1000 yarns per meter in length. The higher the density and comb of the carpet, the longer the carpet will last.
Sometimes carpet sellers do not announce the actual density and comb to the buyer just to attract the customer and express it more than the real amount.
Persian Carpet transverse density
The number of roots (color knots) per meter of carpet width is indicated by the comb.
For example, a 350-combs rug means that 350 roots (color knots) are woven per meter of carpet width. The most common combs on the market are 350,440 500-700 combs.
Longitudinal density of the carpet
The number of roots (color knots) in a meter long is called the Longitudinal density of carpet.
Example of a carpet with a density of 500, i.e. in one meter of length, the carpet is woven with the equivalent of 500 roots (color knots).
Longitudinal density differs in different methods of machine carpet weaving).
Number of roots (color knots) per square meter of carpet if the number of color knots in width is equal to 500 knots and in length is equal to 1000 color knots. Therefore, the number of roots (color knots) in one square meter 500000=1000×500.
What is the difference between carpet density and carpet comb?
Simply put, Persian carpets with more combs are finer and more crowded, so they are more similar to hand-woven and are so-called hand-woven.
So the comb of the Persian carpet is related to the design of the carpet. However, density, as its name implies, is related to the compaction and density of the carpet. The higher the density of the carpet, the harder, and heavier the carpet becomes.
Persian Carpet comb detection
The easiest way to identify a machine carpet comb is to count the number of carpet knots per unit width of the machine carpet. That is, there should be 7 knots in every centimeter of 700-combs carpet.
The density in the carpet indicates the compression of the knots together. In fact, the higher the density of a carpet, the heavier, and firmer the carpet is.
Density detection in carpets
The best way to determine the density of the Persian carpet is to count the number of carpet knots per unit length.
A very important point in the density of carpets in machine-made carpets is that the texture of high-density machine-made carpets is one to one; That is, if the density is greater than 2,000, the number of knots per meter of length will be one-third of the density.
For example, in a machine carpet with a density of 2550, there are 850 knots (i.e. one third of 2250) per meter of length of the carpet, in other words, there should be 17 knots in every two centimeters.
In the market of machine-made carpets, there are profiteers who replace machine-made carpets with low density and high-density carpets, and due to low customer awareness of the technical specifications of carpets, they buy these carpets at a lower price.