A rug with rate of 1.5 has the following characteristics:

• There is a repetition of cylinder at most two cards or one cm.

• Size of pattern is complete.

• It as a good hand-touching.

• Difference of rug length in comparison with standards is 5%

• Amount of used starch per m2 is standard.

• Difference of pile height is 20%.

• These are no rough cutting.  

• Lock of pile in simple background is at most 3mm and in patterned back ground is at most 5mm.

• There is no pile burnings.

• At most there are 4 rows complete torn out  pile

• There is no tearing and holes.

• It has at most 10cm darning

• It has no patch.

• There is no latex on the carpet front.

• There is no tearing in warps.

• There are at most 3 rows designing fault.

• At most up to 3 rows cards in different places, there is problem in simple weaving card.

• At most there is loosely yarn at the back.

• There is not problem in roots and zigzag

A second rate rug has the following characteristics

• There is repetition in cylinder  at most 5cm or 10 cards

• Patterns are replaces a little.

• There is a satisfactory hand-touching.

• Distance of rug's length in comparison with standards is up to 10%.

• Amount of used starch per m2 is satisfactory according to standards.

• The least height of  pile  is 4mm (if there is a difference in height of       pile)

• Difference in height of   pile   is up to 50%.

• It has little rough cutting edges.

• There is lack of pile at most 1 cm in width.

• There are at most 10 complete rows of extra pile.   

• There is a little pile burnings.

• There is at most 15cm darning

• There is no patch.

• There is a little latex on the carpet front

• There is at most 5 cm warp tearing.

• There is a problem in simple-wearing card at most up to 6 cards in different parts.

• There is loosely yarn at most at the back.

• There is small problem in roots and zigzag.

A third rate rug has the following characteristics.

• There is repetition in cylinder   more than 10 cards    or 5cm.

• Patterns are replaced a lot.

• There is a satisfactory hand-touching.

• Distance of rug's length in comparison with standards is _+   35%.

• Amount of used starch per m2 is satisfactory according to standards.

• If there is a difference in height of pile   , the least height of pile is 4mm.

• Difference in height of pile is up to 50%.

• It has little rough cutting edges.    

• There is lack of   pile   more than one cm in width.

• There are more than 10 complete rows of extra pile   .

• There is a lot pile burnings.

• There is more than 7 rows complete tearing in pile.

• There is no tearing or hole.

• There is more than 15cm darning.

• There is a small patch.

• There is latex on the carpet front.

• There is more than 5cm tearing in warp.

• There is a problem in designing for more than 6 rows.

• There are problems in simple-weaving card in different parts.

• There is   loosely yarn in all the back of rug.

• Root and zigzag have a little problem.

• In case of extra yarn between two margins, if only due to one yarn the patterns replace, the rug will be considered as rate of 1.5 or 2.

Forth rate rugs are those rugs which the difference of their length is more than   25% and usually cut a doormats and cushions in the following sizes:

• 90   x   70cm

• 75   x   50cm

Cushions in following sized:

• 75   x    100cm

• 10    x    70cm

Fifth rate rugs are those in which their width is 5cm less than standard and they are considered as damages

Machine-made rugs which come out of factories should have the label including the following information:

• Sizes: a machine-made rug, ignoring the size and shape, should have special sizes in metric systems and about 1.5cm tolerance.

• Production: In the label it should be noted that this is a machine- made carpet as well as name of the production machine.

• Specifying the yarns: the yarn in pile or background should be noted in percent.

If the yarns are artificial, the name of root and the commercial name should be inserted too. The percentages should have 0.3 tolerance in comparison with the weight of all yarns and in calculation related to pile or background, the gross material should not exceed than 3%.

• Guide for washing

In the following cases, some guides are necessary.

• Washing guide.

• Kinds of suitable material for washing.

• Permissible faults and rating of machine-made rugs

Faults which are possible in rug are the following:

• Empty space

Empty space happens when pile is torn and the worker didn't pay attention, so the place of that yarn will be empty and it will continue unless the worker finds that.

It the empty space is horizontal, it will be because of lack of performance in hurnish sticks.

• Extra yarn

This fault occurs when the blade which is going to raise some of hurnish will be stuck to other sticks and raise them too or while raising one of hurnish next   hurnish too. In these cases you will see that on a complete blue background there should be some red yarns.

• Repetition in cylinder

When the pattern cards  is placed on the  cylinder   in order to order the needles, after pressing the needles for several times, cylinder  doesn't turn so in this case  secondary hurnish  according to the order, will go up and down and pattern doesn't move so repetition in patter occurred which is called repetition in cylinder .

• Fault in designing

If happens due to problem is design or settling the pattern wrongly.

• Tearing:

This fault is when the cuttings blade for which is moving between two rugs will beat the rug and tears it or the rug may be stuck to a part of machinery or even while transporting, a piece of if become torn.

• Difference in color party

This problem is due to replacing of bobbin from one color instead of another color in the shelf in the back of the machinery and also the double-coloring is due to using different shades of one color.

• rough cutting  

The distance between two rugs on the machinery is a fixed amount, for example 22mm which has been divided into two equal parts by a blade and separating of the above and beneath rugs are as the result. Now if the blade cut one pile smaller, this is called rough cutting edges. Moreover, rough cutting edges can be produced due to distance change between two rugs. That is may bring down or up the pile    and the two rugs go closer but the blade always move from the middle and the displaced rug will come down or up and then the pile  will be shortened andrough cutting edges  will produced.

• Latex on the carpet front

This fault occurs when the used starch is more than necessary and too much starch will enter the yarns and hand-touching will face a problem.

• Striping of width because of cutting stage.

This problem is due to disarrangement of   cutting    blade, when somewhere in the rug will get more pile and somewhere else get less, therefore you will see the rug striped.

• Double- weft is when the weft tears while weaving and the extra yarn should be brought out. Now if the weft tears and moving shuttle from the side in which the yarn has been torn isn't done, two wefts will place next to each other

• Tearing the warp

When the warp tears and the worker doesn't pay attention, therefore weavers will continue this job and after finishing the rug it will be visible from the back of rug .

• Shelf

While some hurnish are stuck and don't move and some parts of rug for example 2 cm will be without pile.

• pile burnings

When in a rug, different kinds of yarns (for example wool and Acrylic) should be used and in finishing stages without paying attention to the differences, the job will finish.So, one of the yarns may burn and it is visible in the rug.

• Loosely yarn at the back

This fault is while carpet back cutting and the reason is disarrangement of machine and due to this, the back of the rug bad cutting and you can see the yarns heads a lot.

• Problem in roots and zigzag

This problem is due to disarrangement of root or zigzag wheel and as a result the root are not produce in fixed distances in a direct line or the zigzag is not done in the specified place and it decreases the quality of rug.

• Characteristics of wool machine-made rugs

The wool rugs consist of those rugs which have three kinds of yarn as the following:

• Warp is 100% cotton

• Weft is 100% cannabis

• Pile is 100% pure anti-moth wool

In addition to these three Kinds of yarns, there are other yarns such as root yarns and sewing yarns but usually those three yarns are used.

• Important characteristics of machine-made rugsg according to standards

If the accumulation of warps or wefts related to the machines changes with accumulation of 400 and 500, these rugs at least should have characteristics of produced rugs with accumulation of 350 wefts and this shows the fineness.

• The average force for extracting pile from the carpet is 8.5 N.

• Return ability of rug after the pressure toward the first thickness is at least 72%.

• Thickness of rug after 1000 beating mechanical charge in comparison with the first thickness is 75%.

• Sizes of rugs should be as the following:(But the limit of tolerance is _+  1% in width and  _+  1.5 in length )

  • 300  x 2400 cm  

  • 100 x  2400 cm

  • 250 x 2350 cm

  • 100 x 2300 cm

  • 200 x 2300 cm

  • 100 x 2180 cm

  • 150 x  2225 cm

  • 145 x  2150 cm

  • 125 x  2200 cm         

•  The number of zigzag in 10cm is at least 20.

• The weight of the yarn per m is 2.68 to 3.10 gr.

• Comparison between 100% pure Acrylic rug and a mixed carpet co: the B.C.F

• In respect of durability Acrylic rug has a longer life and is more durable.

• In respect of shrinking Acrylic rugs shrink so little but low-qualified rugs usually shrink too much In respect of light stability, washing and rubbing Acrylic rugs are much more resistant than BCF rugs

• Absorbing in nature Acrylic rugs cannot be absorbed by nature but BCF will change to powder and will be absorbed by nature.

• In respect of appearance and beauty Acrylic rug will be changed in long time and on the contrary BCF change very much.

• Comparison between hand-made rugs and machine- made rugs

• Although it seems most of machine- made rugs have been woven   by beautiful and suitable designs and because they are cheap, you cannot compare these two.

• A machine- made rug after while if cannot be used but hand-made rugs even if it is low-qualified, it will be much or beautiful and precious.

• If you look at the back of machine-made rugs, you will see that the warps and wefts are in order and also while touching you will touch it.

• In machine-made rugs, the designs are so symmetric in regard with rug axes and this is usually when the fine hand- made rugs are woven

• On the contrary of hand-made rugs which their patters is the surface or of the back of the rug seems equal but in machine- made rugs, the detail of pattern at the back of the rug are visible.

• The roots of hand-made rugs are the continuants of warps, but in most of machine-made rugs, roots are woven separately and then connected to the rug or some of rugs without roots. In addition, the selvedge of machine-made rugs are so fixed and in order and they the easily recognizable

• Whenever you fold a machine-made rug in the width, pile will be so tidy in horizontal rows and the distance between rows are completely direct and this is not seen in hand- made rugs and the last item is that pile of machine- made rugs are sponge- like and they are lighter in comparison with the hand- made rugs.

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