Last updated on September 5th, 2023 at 11:13 am
The weave shows the interlacing pattern of warp and weft. Each weave consists of the following parts or fields.
These are the contact points between warp and weft crossing at right angle. The number of contact fields always equals the product of the number of warp and weft threads. Contact field = RNwa X RNwe = 3 X 3 = 9
These are the points where a yarn of one system of threads changes its position in relation to the other system. A distinction is made between single and double interlacing fields.
Single Interlacing Field
The yarn bends from the top of the fabric to the bottom and covers two or more yarns.
Double Interlacing Field
The yarn bends, cover a following yarn, bends again and reappears at the same fabric side.
Interlacing fields are active fields since they provide the fabric cohesion.
These are the zones where the warp and weft yarns do not touch and do not change fabric side. Because of the free field floats are formed and the yarns in the weave may shift.
These are zones where neither warps nor weft threads occur. The number of open field is important, for example for air and water permeability.
Open field = RNwa X RNwe = 3 X 3 = 9, same as contact field
Where, RN = Repeat number
Wa = warp and We= Weft
It is one kind of short-hand system representing the weaving of warp or weft yarn. It gives the successive floats. The number of floats always equals the number of figures in the formula number. The warp floats coming up are put above the fraction line, the warp floats going down are put under the fraction line.
FNwa = Formula number for the warp and FNwe = Formula number for the weft.
It indicates the number of warp and weft yarns in the repeat. The repeat number for the warp equals the sum of the figures in the formula number for the weft and vice versa.
The interlacing ratio of a fabric is the ratio between the actual number of interlacing fields and the maximum number of interlacing fields. The degree of interlacing is the interlacing ratio expressed as percentage.
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