Jin-ammonia stair cloth: full analysis of structure, technology and application trends
Nylon stair cloth is a fancy knitted fabric with nylon fiber as the base and spandex fiber as the elastic carrier. It is named after its surface has a concave and convex stripe texture similar to the steps of a staircase. It combines the wear resistance and smoothness of nylon with the high elasticity and rebound characteristics of spandex. It has a three-dimensional touch and strong fit. It is a specialty fabric in the fields of sportswear, fashionable women's clothing, and underwear.
1. Principles: core logic of stepped texture and elastic support
The core advantage of nylon stair cloth comes from the special coil arrangement structure and the performance synergy of nylon fiber.
Principle of texture forming: During weaving, the alternating "loop-tuck" operation of the needle bed of the knitting machine forms regular convex stripes and concave gaps on the surface of the fabric. The coils in the convex parts are dense and the coils in the concave parts are loose. The two are staggered to form a ladder-like three-dimensional texture without destroying the overall ductility of the fabric.
Principle of elastic support: Spandex fiber is integrated into nylon yarn in the form of core-spun yarn. The high elongation at break of spandex provides the fabric with transverse and longitudinal stretch resilience properties; the high-strength properties of nylon fiber limit the over-stretching of spandex and prevent the fabric from loosening and deforming after long-term use, achieving the dual effect of "three-dimensional texture + stable elasticity".
2. Craftsmanship: the fine process from raw materials to finished products
Raw material ratio: The mainstream ratio is nylon 85%~92% + spandex 8%~15%. The spandex ratio determines the elasticity of the fabric, and the nylon ratio affects the wear resistance and gloss of the fabric, which can be flexibly adjusted according to the application scenario.
Yarn preparation: Spandex yarn is used as the core yarn, and nylon filament is spirally wrapped with the outer layer to make a nylon-spandex core-spun yarn, which not only avoids the stickiness caused by direct contact of spandex with the skin, but also improves the yarn's anti-snagging ability.
Staircase fabric weaving: Use a computer-controlled single-sided or double-sided knitting machine, input the preset ladder pattern program, control the knitting needles to alternately complete looping and looping movements, and accurately shape the spacing and height of the concave and convex stripes; the yarn tension must be strictly controlled during the weaving process to prevent uneven stripe thickness and unbalanced elastic distribution.
Post-finishing process: It goes through pre-shrinking, scouring, dyeing, shaping, softening and other processes in sequence. The pre-shrinking process controls the shrinkage within 3%, the shaping process fixes the stepped texture to prevent collapse after washing, and the soft finishing improves the fabric feel and optimizes the skin-friendliness of the stepped stripes.
3. Application Category: Covering practical scenarios in multiple fields
With its three-dimensional texture and high-elastic fit, jinamine stair cloth has highly targeted application scenarios:
Sportswear field: It is the preferred fabric for yoga wear, fitness pants, and tight-fitting sports jackets. The stepped texture can enhance the breathability of the fabric and skin, reducing the stuffy feeling during exercise. The high elasticity can adapt to large extensions of the limbs. It is also wear-resistant and anti-snagging, extending the service life of clothing.
In the field of fashion women's clothing: used to make tight dresses, high-waisted skirts, bottoming shirts, etc. The three-dimensional stepped texture enhances the design and layering of clothing. The elasticity fits the body shape to show a slimming effect. The gloss of nylon can highlight the texture of clothing.
In the field of intimate underwear: it can be used to make the surface fabric of seamless underwear and thermal underwear. The concave and convex texture has both breathability and massage touch. The double-sided flat back design avoids wearing marks and meets the needs of comfortable fit.
4. Maintenance: maintenance skills to extend the life of fabrics
Washing requirements: It is recommended to wash by hand or machine in cold water (water temperature ≤30℃). When washing in a machine, put it in a laundry bag to avoid mixing with rough clothes such as jeans to prevent the ladder stripes from being snagged or worn; chlorine-containing bleach is prohibited to prevent yellowing of nylon fibers and attenuation of elasticity of spandex.
Drying method: Lay flat in the shade or dry at low temperature on the reverse side to avoid sunlight exposure. Nylon is prone to fading and aging when exposed to the sun for a long time, and spandex exposure will accelerate elasticity failure. Do not wring out hard to prevent step texture deformation and fabric wrinkling.
Ironing and storage: The ironing temperature should be controlled at 120℃~140℃. When ironing, a layer of damp cloth should be placed to avoid direct contact with the fabric at high temperatures. When stored, fold it flat to avoid crushing the convex part of the step due to heavy pressure, and keep away from sharp objects to prevent snagging.
5. Technology: the core breakthrough direction of performance upgrades
The current technical upgrade of jinami stair cloth focuses on three major dimensions:
Texture customization technology: Research and develop high-precision knitting equipment to achieve personalized customization of the spacing, height, and shape of step stripes, support small batch production of special-shaped staircase textures such as wavy and twill shapes, and meet the brand's differentiated design needs.
Functional modification technology: Through antibacterial finishing, cooling finishing, sun protection finishing and other processes, the fabric is given antibacterial, deodorant, contact cooling, UPF50 + sun protection and other functions, and expands applications in outdoor sportswear, medical underwear and other subdivision fields.
Environmentally friendly raw material technology: Use recycled nylon instead of virgin nylon, combined with bio-based spandex to create an environmentally friendly nylon stair cloth; use low-temperature dyeing process to reduce production energy consumption, in line with the trend of green and sustainable development.
6. Trend category: new direction of market development
Personalized customization trend: With the maturity of small-batch flexible production technology, jinami stair cloth has gradually developed in the direction of pattern customization, supporting clothing brands to design exclusive ladder textures on demand and reducing homogeneous competition.
The trend of functional compounding: The nylon stair cloth that combines multiple functions such as moisture wicking, antibacterial, and warmth retention will become the mainstream choice for sports and outdoor clothing, achieving a dual upgrade of "appearance + function".
Trend of lightness and thinness: On the premise of maintaining the ladder texture and elasticity, an ultra-thin nylon stair cloth is developed, which is suitable for summer underwear and light sun protection clothing, and expands the seasonal scope of application of the fabric.
With its unique three-dimensional texture and high-elastic properties, jinami stair cloth is developing steadily in the direction of customization, functionality and environmental protection, driven by consumption upgrades and personalized needs.
