Anti-see-through and Antii- ultraviolet Recycled Polyester Fiber

Reasons for recommendation

The functionalized recycled polyester fiber, combining anti-ultraviolet property and comfort, is highly practical for lightweight and anti-see-through white summer clothing application scenarios.

Preparative technique

The highly-dispersive anti-ultraviolet functional master batches are blended with the recycled polyester pellets prepared through physical or chemical methods, and then processed through a deformed spinneret plate to produce the fiber through the melt spinning technique.

Features of fibers and finished products

Main Specifications

Staple (Regenerated by physical method) : 1.11dtexX38mm

Filament ( Regenerated by chemical method): 84dtex/36f,

84dtex/72f, 111dtex/36f, ll1dtex/96f, l11dtex/144f, 167dtex/48f,

167dtex/96f, 167dtex/144f, 167dtex/288f, 333dtex/96f DTY

Relative Standards

Recycled polyester staple fiber (FZ/T 52010-2014)

Recycled polycethylene terephthalate drawn textured yarn (FZ/T54047-2020)

Properties of fibers and features of finished products

.Recycling, green and environmentally friendly.

.Excellent anti-ultraviolet and anti-see-through performance.

.Cotton-like softness, fluffiness, and air permeability.

Performance indexes of anti-see-through and anti-ultraviolet recycled polyester fiber

Specifications	BreakingStrength(cN/dtex)	Elongation at break (%)		Curl Amount(Pc/25mm)	Curlingshrinkage rate(%)	Thread density deviation rate(%)	Length deviationrate (%)	Defect content(mg/100mg)	Dry-thermal shrinkage(%)
1.11dtexX38mm	5.1	21.7		12	12.0	2.3	-2.4	2.4	7.1
84dtex/72f	3.68	20.93		–	12.52	2.50	–	–	–
		Fabric testing (100% this fiber)
		Anti-ultraviolet performance			Anti-see-through grade (grade)		Anti-see-through index		Color fastness to light yellowing (grade)
		UPF: 1300 UVA:0.60 UVB:0.05			5		99.6		4
		UPF : 1300 UVA:0.60 UVB:0.05			5		96.5		4

The downstream application guidance

Guide on the applications of staple fiber

Spinning:When using staple fiber for spinning, it is recommended to use yam 20~60s.

Weaving:When blending with staple fibers, it is recommended that the fiber content is≥30%.

Guide on the applications of filament yarn

Pre-setting: The pre-setting temperature should be 160~170℃, with an appropriate increase in overfeed and a slight narrowing of fabric width.

Pre-treatment: De-oil as clean as possible before putting it into the vat, and enter the next process as soon as possible to avoid oil slick sticking to the fabric surface to form a dyeing defect; for pre-treatment in the vat, add vat softener to prevent fabric scraping.

Dyeing: Follow the conventional dyeing process for dacron, with an appropriate reduction in water flow rate; for fabrics containing elastane, the gentle temperature treatment must be adopted, and it is necessary to prevent dispersed dyes from staining the elastane component, which may lead to reduced fastness.

Post-finishing:The recommended temperature for post-setting is 160-170℃.

Examples of downstrean applications for anti-see-through and anti-ultraviolet recycled polyester fiber

Terminal field	Raw material ratio	Fiber specification	Properties of the product
Woven fabric	42% chinlon /31% anti-see-through and anti-ultraviolet recycled polyester fiber/15% viscose fiber/12% elastane	Full-dull 1.11dtexx38mm	Four-way elasticity, anti-see-through and anti-wrinkle, super-soft hand feeling, and appropriate cool feeling
	100% anti-see-through and anti-ultraviolet recycled polyester fiber	Full-dull 1.11dtexx38mm	Anti-ultraviolet,moisture-absorption and quick-drying, anti-see-through and anti-wrinkle
Knitted fabric	87% anti-see-through and anti-ultraviolet recycled polyester fiber /13% elastane	Semi-dull 84dtex/72f	Anti-see-through, anti-ultraviolet, moisture absorption and perspiration

Application of fibers

Clothing textiles:Swimsuit\Shirt\White pants\Nurse uniform

Home textiles:Curtain

Q: Do you know the competitive advantages of anti-see-through and anti-ultraviolet recycled polyester fiber?

A: It solves the technical challenge of evenly dispersing functional powders in fibers, and realizes the addition of a high proportion of functional powders. This not only enhances functionality but also meets the physical and chemical properties required for textile weaving and apparel applications. Given the inherent anti-ultraviolet and anti-see-through properties of the fiber, the fabric can achieve

effects superior to those of commonly coated fabrics without the need for coating treatment. Additionally, it possesses excellent washability. The production of high-quality differentiated fibers with recycled polyester as raw material aligns with the concept of sustainable development.