Introduction:
Leno fabric (also called Leno weave or cross weave) is a weave in which two warp yarns are woven around the weft yarns to provide a strong yet sheer fabric. The standard warp yarn is paired with a skeleton or ‘doup’ yarn; these twisted warp yarns grip tightly to the weft which causes the durability of the fabric. Leno weave produces an open fabric with almost no yarn slippage or misplacement of threads. YUSHENG provides a wide range of specifications leno fabirc, see specification for details.
Specification:
| ITEM /SPEC | UNIT | 210D/1 * 420D/1 | 210D/1 * 420D/1 | 840D/1 * 1260D/1 | 1680D/1 * 2520D/1 | 500D/1 * 500D/1 | 1000D/1 * 1000D/1 | 1000D/1 * 1500D/1 | Method |
|---|---|---|---|---|---|---|---|---|---|
| FABRIC PROPERTIES | |||||||||
| Content | Nylon 6/66 | Nylon 6/66 | Nylon 6/66 | Nylon 6/66 | Polyester | Polyester | Polyester | ||
| Width | cm | TBD | TBD | TBD | TBD | TBD | TBD | TBD | - |
| PHYSICAL AND MECHANICAL PROPERTIES | |||||||||
| Warp Twist | T/m | TBD | TBD | TBD | TBD | TBD | TBD | TBD | GB/T 14345 |
| Weft Twist | T/m | TBD | TBD | TBD | TBD | TBD | TBD | TBD | GB/T 14345 |
| Warp Density | ends/10cm | (33±1)x2 | (54±1)x2 | (41±1)x2 | (32±1)x2 | (40±1)x2 | (40±1)x2 | (33±1)x2 | GB/T 4668 |
| Weft Density | ends/10cm | 50±2 | 70±2 | 40±2 | 36±2 | 40±2 | 40±2 | 34±2 | GB/T 4668 |
| Warp Breaking Load | N/5cm | ≥450 | ≥750 | ≥2500 | ≥3750 | ≥1000 | ≥2600 | ≥2000 | GB/T 32108 |
| Weft Breaking Load | N/5cm | ≥750 | ≥950 | ≥1850 | ≥3050 | ≥500 | ≥1400 | ≥1500 | GB/T 32108 |
| Warp Elongation at break | % | 20±5 | 20±5 | 25±5 | 25±5 | 25±5 | 25±5 | 25±5 | GB/T 32108 |
| Weft Elongation at break | % | 30±5 | 30±5 | 30±5 | 30±5 | 30±5 | 30±5 | 30±5 | GB/T 32108 |
| Dip for Tire Compound | - | RFL | RFL | RFL | RFL | RFL | RFL | RFL | - |
| Adhesion | N/inch | ≥220 | ≥220 | ≥220 | ≥220 | ≥220 | ≥220 | ≥220 | GB/T 6759 |
| Weight | g/m2 | 50±10 | 75±10 | 160±15 | 300±20 | 80±10 | 160±15 | 160±15 | GB/T 4669 |
| Water Content | % | ≤1 | ≤1 | ≤1 | ≤1 | ≤1 | ≤1 | ≤1 | GB/T 6503 |
| Thickness | mm | 0.35±0.05 | 0.35±0.05 | 0.57±0.05 | 0.9±0.05 | 0.5±0.05 | 0.7±0.05 | 0.7±0.05 | GB/T 36020 |
| Shrinkage in hot air 30min@150°C | % | ≤5 | ≤5 | ≤5 | ≤5 | ≤5 | ≤5 | ≤5 | GB/T 36020 |
Application:
Leno fabric, which allows light and air to pass through freely, is used in any area where a sheer, open weave fabric that will not bruise (where the threads shift away from their original positions, disturbing the uniformity of the weave) is required. If a simple in-and-out flat weave were woven very loosely to achieve a sheer fabric, the threads would tend towards this bruising. Leno weaves are often used for window treatments and for sheer layers for fine clothing. When made with glass fibre or other strong yarns or when permeated with a strengthening compound, it can be used as an engineering material in construction. Due to the openness of the fabric, if a solid covering is required in a construction context, it is often used in conjunction with other weave styles.
