How to judge the warp and weft direction of fabric
How to judge the warp and weft direction of fabric
The warp and weft directions of fabrics are generally judged from the following aspects:
(1) If the fabric to be identified has a selvedge, the direction of the yarn parallel to the selvage is the warp direction, and the other direction is the weft direction.
(2) The sizing is in the direction of the warp yarns, and the unsizing is in the direction of the weft yarns.
(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 yarn twist directions of the single yarn fabric are different, 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 significantly different, the yarns with uniform lines and better luster will be in the warp direction.
(8) If the yarns of the fabric have different twists, the ones with higher twist are mostly in the warp direction, and the ones with smaller twist are in the weft direction.
(9) For towel-like fabrics, the direction of the yarn that generates loops is the warp direction, and the direction of the yarn that does not generate loops is the weft direction.
(10) For strip fabrics, the strip direction is usually the warp direction.
(11) If the fabric has a system of yarns with multiple different characteristics, this direction is the warp direction.
(12) For leno fabrics, the direction of the twisted yarn is the warp direction, and the direction of the untwisted yarn is the weft direction.
(13) In interwoven fabrics of different raw materials, generally cotton and wool or cotton and linen interwoven fabrics, cotton is the warp yarn; in wool and silk interwoven fabrics, silk is the warp yarn; in wool and silk and cotton interwoven fabrics, silk and cotton are warp yarns; natural silk In the interweaving of silk and silk, the natural thread is the warp; in the interweaving of natural silk and artificial silk, the natural silk is the warp. Since fabrics have a wide range of uses and varieties, and the requirements for fabric raw materials and organizational structures are also diverse, the judgment must be based on the specific conditions of the fabric. Eif71ovf
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