(7) Very complete basic knowledge of fabrics worth learning – the difference between the warp and weft directions of fabrics, and the identification of front and back sides
(1) If the fabric to be identified has a selvedge, the direction of the spinning yarn parallel to the selvedge is the warp direction, and the other direction is the weft direction.
(2). The sizing is in the direction of the warp yarn, and the sizing is in the direction of the weft yarn.
(3). Generally, the fabric with higher density is in the warp direction, and the fabric with lower density is in the weft direction.
(4) For fabrics with obvious reed marks, the direction of the reed marks is the warp direction.
(5) For half-thread fabrics, the strand direction is usually the warp direction and the single yarn direction is the weft direction.
(6). If the yarns of the single yarn fabric are twisted at different times, the Z twist direction is the warp direction and the S twist direction is the weft direction.
(7). If the warp and weft yarn characteristics, twist direction, and twist degree of the fabric are not very different, the yarn with uniform yarn lines and better luster will be in the warp direction.
(8) If the yarn twists of the fabric are different, the twist will be greater in the warp direction and the twist will be smaller in the weft direction.
(9) For towel fabrics, the spinning direction of terry-like fabrics is the warp direction, and those without terry yarn are in the weft direction.
(10), strip fabric, the strip direction is usually in the warp direction.
(11). If the fabric has a system of spinning yarns with multiple different characteristics, this direction is the warp direction.
(12). For leno fabrics, the direction of twisted yarns is the warp direction, and the direction of untwisted yarns is the weft direction.
(13) In the interlaced fabrics of different raw materials, generally cotton wool or cotton and linen interlaced fabrics, cotton is the warp yarn; in the interlaced wool and silk fabrics, the silk is the warp yarn; in the interlaced fabrics of wool, silk and cotton, then Silk and cotton are warp yarns; in the interlacing of natural silk and spun silk, the natural thread is the warp yarn; in the interlacing of natural silk and rayon, the natural silk is the warp yarn. Since fabrics have a wide range of uses and varieties, and the requirements for fabric raw materials and organizational structures are also diverse, the inference must be based on the specific conditions of the fabric.
3. The difference between the front and back of the fabric
(1) Generally, the pattern and color on the front side of fabric are clearer and more beautiful than the back side.
(2) For fabrics with special stripes and color-matching pattern fabrics, the front pattern must be clear and pleasing to the eye.
(3), convex and concave-convex fabrics, the front side is tight and delicate, with stripes or patterned ridges; while the reverse side is rougher, with longer floating lines.
(4). Raised fabric: Fabric with one side raised, with the raised side being the front. Fabrics that are raised on both sides are finished with pile.��The neat side is the front of the fabric.
(5). Look at the edge of the fabric. The side with a clean and neat edge is the front of the fabric.
(6) For double-layer or multi-layer fabrics, if the warp and weft densities of the front and back sides are different, the front side will generally have a higher density or the front material will be better.
(7) Leno fabric: The side with clear lines and protruding twisted warps is the front.
(8) Towel fabric: The side with higher terry density is the front side.
(9) Printed fabric: The side with clear pattern and brighter color is the front.
(10). The whole piece of fabric: Except for export products, those with instructions (trademarks) and factory inspection stamps are usually on the reverse side. For most fabrics, there are obvious differences between the front and back sides, but there are also many fabrics whose front and back sides are very similar and can be used on both sides. Therefore, it is not necessary to distinguish the front and back sides of such fabrics.
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