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The intertwining of a fabric, the weave.
The weave relationship is a symbolic graphic representation of the complex of threads and wefts beyond which the same evolutions of the weave are repeated. It represents the fundamental cell which, expanding in the sense of the weft and warp, forms the fabric.
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In the symbolism of the weave ratio, the columns of vertical squares represent the warp threads, the rows of horizontal squares represent the weft threads. Each resulting square is the intersection of a thread with a weft, by convention the colored square represents the raising of the thread on the weft while the white square represents the rest of the thread under the weft.
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The basic armor used for the development of the prototypes 120C-01-01 / LETTERING1 and 120F-01-01 / ETNICO1 is identified with the name "batavia da 4" and locally known in the Biella area with the slang term of "casimir" of which we can say to be composed of 4 warp ratio wefts and 4 weft ratio wefts.
This type of weave is widely used in the world of drapery and Biella wool because, while using a yarn with a very high fineness, with the same relative density, it allows to obtain a heavier fabric than weaves such as canvas and twill weave. 3.
This is caused by a particular characteristic that each armor possesses and which is called the "Armor coefficient". It is a calculation that takes into account:
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How many warp threads are included in the warp ratio
How many weft threads are included in the weft ratio
How many times the warp threads of the report cross with the weft threads
How many times the weft threads of the report cross with the warp threads
A "coverage factor" which constitutes a constant to be included in the formula and which depends on the base reinforcement on which the reinforcement in question is built.
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It should be borne in mind that the weaving coefficient of the canvas, considered as basic weave for all the others, is 1; it follows that with the same chain and weft counts, the Batavia 4 weave will need 27% more threads and wefts to obtain the same density balance compared to a similar fabric made in plain weave.
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