THE FLEXIBLE AND ELASTIC FIBER

The flexible and elastic fiber, like an agile dancer, adapts to every extension and contraction of the body. It unlocks new tactile mechanisms, and realizes a series of innovative combinations, including the isomeric bicomponent composite of bio- based polyamide, the 8-shaped hollow bicomponent composite of bio-based and recycled materials, the PTT bicomponent composite integrating matrix elasticity

and curling elasticity, and the application of ultra-low temperature easy-setting technology. Such combinations showcase a dual style of softness and elasticity, allowing clothing to conform to the body shape while maintaining comfort. Whether engaging in sports or resting, they move freely with you,adapting to your every move.

Bio-based Polyamide PA5X Bicomponent Composite Elastic Fiber

Reasons for recommendation

The bio-based PA5X bicomponent composite endows the fiber with

long-lasting elasticity. The fabric is wear-resistant and skin-friendly,

and aligns with the sustainable fashion concept.

Preparative technique

With bio-based PA5X as the raw material, the specially designed side-by-side spinneret plate and the twin-screw melt spinning process is adopted to produce the bio-based polyamide PA5X bicomponent composite elastic fiber with isomeric structure through wet-heat setting.

Features of fibers and finished products

Filament: 78dtex/24f DTY

Polyamide 6 drawn textured yarn (FZ/T54007-2019)

Properties of fibers and features of finished products

.Bio-based raw material, green and environmentally friendly

.Three-dimensional spiral curling structure, high elasticity.

.Resistant to fatigue and abrasion, good durability.

.Soft and fluffy fabric, high comfort.

.Easy to dye, good dyeing evenness.

Indexes of Bio-based Polyamide PA5X Bicomponent Composite Elastic Fiber

Specifications	Breaking tenacity(cN/dtex)	Elongation at break(%)	Elastic recoveryrate(%)	Wet-heat curling shrinkage rate(%)	Wet-heat curling stability(%)	Color fastness(grade)
78dtex/24f	3.20	36.32	90	55.04	50.77	4~5

The downstream application guidance

Weaving: It is suitable for the weaving of woven and knitted fabrics.

Pre-setting: Process the fabric in boiling water at 100℃ for 10~30

minutes, and ensure that excessive tension is not applied to the

fabric during this process.

Pre-treatment: Preferentially use batch process for oil removal and

desizing.

Dyeing: Dye with dyes specifically for chinlone, Use nylon-specific

dyes such as acid dyes, metal complex dyes, etc., at the dyeing

temperature of 95~100C and the heating rate of 0.5~1℃ /min.

Post-setting: Adopt the setting temperature of 120~160℃, with

appropriate overfeed of the fabric width to avoid elasticity loss

caused by excessively high setting temperatures or stretching processes.

Application of fibers

Clothing textiles:Leisure wear\Sportswear\Down jacket

Q: What unique properties does the bicomponent composite structure bring to the elastic fiber?

A: The bicomponent composite structure takes advantage of the difference in intrinsic shrinkage characteristics between the two components. Through post- treatment, the elastic fiber is imparted with the characteristic of natural and permanent spiral curling. Such curling, stemming from the intrinsic difference in the properties of the fiber, is permanent and therefore provides more stable and long-lasting elasticity. At the same time, this structure also imparts excellent bulkiness and elastic recovery rate to the fiber, and enhances the color fastness

and hand feeling of the fabric, enabling it to provide better wearing comfort and aesthetics in apparel textiles.