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Quality criteria of oriental rug

The key factors which involve the quality of the carpet are as follows:
1. The materials used to weave the carpet. The world's finest carpet is made of silk instead of anything else, i.e. silk warp, weft yarn and silk piles.
2. The density of the carpet. The density is measured by the number of the warp lines per inch. With more lines, the carpet design looks more elegant but it takes longer manufacturing time in return.
3. The workmanship of the weavers. A good weaver can make a qualified carpet whereas a bad weaver can not. Carpet weaving is a work which demands excellent workmanship, otherwise there will be problems occurring i.e. dissymmetry of the designs, etc.
4. The harmony of the colors used on the designs.
Let's take hand-made silk carpet for example. What's important are the material, specification, yarn lines and quality of the workmanship which are the key factors associated with customers' rights and interests. Whether you are purchasing the right product, it depends on if it's 100% silk or if the dimensions and yarn lines are meeting up to the what's the stated on the labels. The yarn lines are directly affect the durability., whereas workmanship defines the value of the carpet and this include the color treatment, surface cutting skills and handling on brightness etc.


Hand made carpet front Machine made carpet front Hand made carpet back Machine made carpet back

How to Identify A Real Silk Oriental Rug?
A
t present, there is still great room for the National Quality Standard to be improved and many faker started to use the chemical fiber or low wool carpet for the pure wool or real silk carpet and put them on sale in the market. Due to the lack of corresponding quality regulations, the customers purchase such inferior products but in most cases their rights for returning or exchanging the cargo would not be guaranteed. It's therefore suggested by the experts that only the large manufacturers with good credit will be the best choice for all the purchase of this silk carpet.
When you're looking at a nicely woven and patterned carpets and you still might be wrong if you think this is the real silk one. Here are three ways which help you for easy identification:
Look carefully at the "silk" rug: it should be tightly woven (with more than 200 knots per sq. inch., and sometimes with 500 or more knots), intricately knitted, and with real silk fringe that is exactly extended from the end of the warp yarns and not sewn on or into the ends of the rug. Artificial silk rugs often use less knots (not more than 250 knots per sq. in., and sometimes even under 150 knots per in.), and are sewn with cotton fringe whereas high quality silk rugs always are tightened with real silk fringe.
How can we identify a carpet woven with real silk? There are three ways.
Rub it! Rub it and the real silk rug feels warm whereas the artificial one feels cool. That can be the easiest way to feel the difference, though it might be not accurate and give you the wrong judgement.
Burn it! This is the best way to test, at least it is helpful. Take off a small piece of the fringe, or pull a knot out of the rug from the back and burn it. Look at the ash and smell the smoke. If the material was cellulose (rayon), the ash is soft and chalky, and the smell is like that of burning paper (most paper is made of cellulose). If it's real silk, the ash should be like a black ball and crispy, and the smell is like that of burning hair (both silk and hair contain protein). You've got to be a little careful with this test to avoid smelling the smoke from the match or, to avoid igniting yourself or the rug dealer's shop.
Dissolve it! The most accurate test is to chemically differentiates protein from cellulose or petrochemicals. At room temperature, mix together a solution of 16 g copper sulfate (CuSO4) in 150 cc of water. Add 8-10 g glycerine and caustic soda (sodium hydroxide: NaOH) until a clear solution is obtained. This solution will dissolve a small sample of natural silk, but will leave cotton, rayon, and nylon unchanged.

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