Polyester yarn · 5 families · 17 yarnsdenier and filament
A yarn’s hand is set by filament count, not denier: at the same denier, more filaments means finer filaments — a softer, more fluid fabric. We opened a single strand into its filaments — see fineness from 36 to 288, then explore the seventeen yarns across five families.
The Fersan polyester yarn catalog has five families: standard textured DTY (50/36, 75/36, 75/72, 100/36, 100/72, 100/96, 150/48, 150/96); microfilament (50/72, 100/144, 150/288 — below ~1.0 dpf, the softest); elastane-covered (gimped) stretch yarn; plied/twisted yarn; and a functional/sustainable family (recycled rPET, chemically regenerated, cationic-dyeable, high-luster). The catalog below lists all seventeen yarns individually.
Capacity & scale
We draw and texture our yarns in our own facility, then continue under the same roof through knitting and dyeing.
Standard textured (DTY) yarns are made by drawing partially-oriented POY and false-twist heat-setting it, locking a permanent, spring-like helical crimp into every filament. That crimp delivers stretch, bulk, fullness and cover — which is why DTY is the backbone of polyester knit apparel. At a fixed total denier, more filaments make each one finer, softening the hand and improving drape. The common luster is semi-dull; bright and full-dull are available on request.
1.39 dpf · 50D/36F
2.08 dpf · 75D/36F
1.04 dpf · 75D/72F
2.78 dpf · 100D/36F
1.39 dpf · 100D/72F
1.04 dpf · 100D/96F
3.13 dpf · 150D/48F
1.56 dpf · 150D/96F
Microfilament yarns are built from very fine filaments below roughly 1.0 denier-per-filament. Because the same total denier is split across far more filaments, each one drops to a silky fineness — giving superior softness, fluid drape and high surface area. These yarns are the basis of the peach-skin and micro-suede surfaces developed by emery sanding / brushing of the finished fabric.
0.69 dpf · 50D/72F
0.69 dpf · 100D/144F
0.52 dpf · 150D/288F
Elastane-covered (gimped) yarn is a composite yarn made by wrapping a pre-tensioned elastane (spandex) core in one or two outer filaments. The sheath protects the bare elastomeric core from abrasion, heat and chemicals while controlling how far it can stretch. The construction (single-cover SCY, double-cover DCY, air-cover ACY, core-spun) sets coverage, hand, balance/torque and end-use.
Plied/twisted yarn is made by twisting two or more single yarns together; this raises linear density, averages out irregularities and — through the amount and direction of twist (S/Z) — tunes strength, abrasion resistance, hand and dimensional stability. Balanced twist (ply twist opposite to the single twist) prevents kinking. The two-for-one (TFO) twister inserts two turns per spindle revolution for high, uniform output.
This family groups specialty polyester yarns positioned around two value levers: sustainability (recycled feedstock) and function/aesthetics (dye behaviour and luster). It covers recycled rPET, chemically-regenerated (“refiber”) polyester, cationic-dyeable polyester and high-luster (“lumine”) yarn. Certifications (OEKO-TEX, GRS/RCS) and recycled content are confirmed on request.
Denier/filament, process (DTY/FDY), luster, cross-section, tenacity and certifications are confirmed on request; contact us for a sample. Fineness (dpf) values are computed as denier ÷ filament count.
| Yarn | Denier / Filament | dpf | Process | Use | Note |
|---|---|---|---|---|---|
| Standard Textured Yarn (DTY) | |||||
| 50/36 Textured Yarn | 50/36 | 1.39 | DTY | Fine jersey & tricot · lightweight linings · light apparel | Crisper/coarser hand than the 72f version; no micro softness. |
| 75/36 Textured Yarn | 75/36 | 2.08 | DTY | General lightweight wovens · linings · basic knits · shirtings | Coarsest hand in this range; no micro / peach-skin development. |
| 75/72 Textured Yarn | 75/72 | 1.04 | DTY | Soft general apparel knits · blouses/shirtings · light sportswear | Not a full microfilament (borderline); not as velvety as 144f. |
| 100/36 Textured Yarn | 100/36 | 2.78 | DTY | Lightweight general apparel knits · linings · basic shirting · entry sportswear | Coarse filament; durability- not softness-led. |
| 100/72 Textured Yarn | 100/72 | 1.39 | DTY | Soft general apparel knits (jersey, interlock, single jersey) · T-shirts · light base layers | Not micro; not the softest class. |
| 100/96 Textured Yarn | 100/96 | 1.04 | DTY | Premium soft-touch apparel & athleisure knits · soft-hand tops | ~1.04 dpf is just above the line — not marketed as microfiber. |
| 150/48 Textured Yarn | 150/48 | 3.13 | DTY | Heavier sportswear · outerwear shells · bottom-weights · upholstery/home textiles | Coarse hand; no softness / peach-skin. |
| 150/96 Textured Yarn | 150/96 | 1.56 | DTY | Softer heavier sportswear and outerwear · drapey home textiles (curtains, bedding face fabrics) | Medium-fine; does not reach microfilament softness. |
| Microfilament | |||||
| 50/72 Micro Textured Yarn | 50/72 | 0.69 | DTY | Lingerie/innerwear · fine jersey · chiffon/georgette · peach-skin base cloth | Price premium vs the 36f version; less body. |
| 100/144 Microfilament Yarn | 100/144 | 0.69 | DTY | Peach-skin and micro-suede apparel · soft athleisure · next-to-skin/intimate knits | Very high filament count optimizes softness but is past the wicking peak (~108f); price premium. |
| 150/288 Ultra-Fine Microfilament Yarn | 150/288 | 0.52 | DTY | Peach-skin sportswear (track-suits, board-shorts) · micro-suede · microfiber cloths/towels · ultra-soft high-absorbency home textiles | Capillaries very tight → wicking declines (softness ≠ best moisture transport); highest price premium. |
| Elastane-Covered (Gimped) Yarn | |||||
| Elastane-Covered (Gimped) Yarn | — | — | Covering/wrapping; core denier typically 20–70D | Activewear (leggings, sports bras) · swimwear · stretch-denim weft · socks/hosiery · seamless/shapewear · waistbands/elastics | Single-cover (SCY) can show residual torque and grin-through under stretch — eliminated by DCY; chlorine/UV resistance comes from the spandex grade, not the covering. |
| Plied / Twisted Yarn | |||||
| Plied / Twisted Yarn | — | — | Plying + twisting | Sewing thread · embroidery · weaving warp/weft · crepe/georgette/voile · high-strength/industrial fabrics · upholstery | For continuous-filament polyester, strength is highest near zero twist and falls as twist rises; unbalanced plying kinks; high twist reduces cover. |
| Functional & Sustainable | |||||
| Recycled Polyester (rPET) | — | — | Mechanical recycling | Apparel and activewear · outerwear · bag/backpack fabrics · linings · home textiles and upholstery | Not biodegradable; sheds microplastics in washing; fiber quality drops each mechanical cycle — we avoid “infinite / closed-loop” claims. |
| Chemically-Regenerated (“Refiber”) Polyester | — | — | Chemical recycling | Premium circular-fashion garments · performance/outdoor wear · take-back/closed-loop collections | Availability and cost differ from mechanical rPET; supply and certification confirmed on request. (Note: “Refibra” is Lenzing’s lyocell brand — distinct from this polyester regeneration.) |
| Cationic-Dyeable Polyester (Cationic / CDP) | — | — | Cationic-dyeable copolymer; CDP | Two-tone and melange fabrics · cross-dye sportswear/fashion knits-wovens · deep brilliant shade and dye-resist (reserve) effects | CDP needs high pressure/temperature; cross-dyeing requires pairing with regular disperse-dyeable polyester. |
| Bright / High-Luster (“Lumine”) Yarn | — | — | As POY/FDY/DTY; bright + trilobal cross-section | Silk-like/satin-effect apparel and eveningwear · linings · decorative high-gloss furnishing · sportswear with sheen · blanket/carpet pile | “Lumine” is a marketing term; the exact definition (bright-trilobal) is confirmed on request. Trilobal carries a soil-hiding ↔ luster trade-off. |
The standard luster is semi-dull — a natural, non-plastic sheen. Silky-bright and full-matte are drawn on request.
Same fineness, the light you want.
Our standard textured (DTY) range covers 50, 75, 100 and 150 denier, with filament counts from 36 up to 288 (e.g. 50/72, 100/144, 150/288 microfilament). We also make elastane-covered (gimped), plied/twisted and functional/sustainable yarns. At the same denier, more filaments mean a finer yarn and a softer fabric.
Most of our denier/filament yarns are DTY (draw-textured), which gives knit apparel bulk, stretch and cover. FDY can also be supplied for flat, lustrous, high-strength uses; the count alone doesn’t fix the process — the end use does.
Yes. We offer recycled (rPET), chemically regenerated, cationic-dyeable (for two-tone/melange effects) and high-luster yarns under the functional & sustainable family. Recycled content and certifications (OEKO-TEX, GRS/RCS) are shared on request.
Of course. We prepare a technical data sheet for each yarn; luster, cross-section, tenacity, shrinkage and certification values are shared on request. Send your sample request via the contact form.
Share your denier/filament, process and luster preferences; we’ll start the sample and quotation process.
