From Fiber to Garment: The Textile Science Behind a Piece of Clothing
— A Glossary Map for the Curious
The clothes we put on every day are far more than just “fabric.” From a single fiber to a finished garment on your back, the journey passes through several disciplines: fiber science, spinning, weaving/knitting, wet processing, and apparel engineering. Below, using the real terminology of the industry, we take that “fabric” apart for you.
1. Fiber: the “Atom” of Textiles
Everything begins with the fiber — a slender, flexible substance whose length-to-diameter ratio typically exceeds 1000:1. By origin, fibers fall into two broad categories:
1. Natural Fiber
- Plant fiber / Cellulose fiber: Cotton (main component: cellulose), and bast fibers such as ramie and linen (higher cellulose content, greater stiffness).
- Animal fiber / Protein fiber: Wool (keratin, with a natural crimp and scale structure) and Silk (fibroin, whose triangular cross-section gives it an elegant sheen).
2. Chemical Fiber
- Regenerated Fiber: reconstituted from natural polymers, e.g. Viscose and Lyocell (e.g. Tencel™, produced via a solvent-based closed-loop process).
- Synthetic Fiber: polymerized from monomers — Polyester (PET, the most dominant), Nylon (PA, highly abrasion-resistant), Spandex (PU, high elasticity, usually only 2%–5% as a covering yarn), and Acrylic (PAN, wool-like).
A basic metric for fibers is linear density, expressed in dtex (decitex, grams per 10,000 meters) or Denier (grams per 9,000 meters); fine-denier and micro-denier fibers feel softer to the touch.
2. Spinning: Turning Fiber into Yarn
Loose fibers must first pass through opening — carding — drawing — roving — spinning to be twisted into continuous filaments or staple yarns.
- Twist: the number of twists per unit length, affecting yarn strength and hand feel.
- Count: indicates fineness. Cotton spinning uses the English count Ne (the number of 840-yard lengths per pound; higher count = finer yarn); wool spinning commonly uses the metric count Nm.
- Process-wise, there is Ring Spun (dense, strong yarn body) versus Open-end / Rotor Spun (high efficiency, fewer protruding hairs).
3. Fabric Formation: From Yarn to Fabric
1. Woven: warp and weft yarns interlace at right angles; the basic weaves are the “three elementary weaves”:
- Plain: the most interlacing points, the most durable (e.g. plain cloth, poplin).
- Twill: diagonal surface lines, soft with a sheen (e.g. khaki, denim).
- Satin: long float lengths, the smoothest and most lustrous (e.g. satin drill).
2. Knitting: yarns form interlocking loops.
- Weft Knitting: e.g. the circular-knit fabric of a T-shirt, with good横向 (course-wise) extensibility.
- Warp Knitting: e.g. swimwear, mesh fabric; dimensionally stable.
3. Nonwoven: fibers are directly web-formed and reinforced (e.g. spunlace, thermal calendering); examples include nonwoven fabric and the core layer of masks.
Fabric weight is expressed by GSM (g/m²); Drape, Air Permeability, and Water Vapor Transmission (WVT) determine wearing comfort.
4. Finishing: Adding Color and Function
Greige fabric must undergo wet processing to become a commercial textile, in four stages:
- Pretreatment: Desizing, Scouring (removing cotton wax impurities), Bleaching.
- Dyeing: dyes are chosen by fiber —
- Cotton/linen use Reactive dyes (covalently bonded to the fiber, good fastness);
- Polyester uses Disperse dyes (applied under high temperature and pressure or thermosol, in a dispersed state);
- Wool/silk use Acid dyes.
Methods include rope, jig, pad-dye, and overflow.
- Printing: direct printing, resist printing, discharge printing, and Digital Printing (inkjet by pattern, less water and paste).
- Finishing: functionality is layered on here — anti-shrink / wrinkle-free (Resin / liquid-ammonia finishing), Flame Retardant (FR), UV protection (UPF), triple-resistant (water-, oil-, and stain-repellent), and soft/stiff finishing, among others.
5. Wear Performance and Quality Evaluation
Professionally, a set of metrics judges “how good it is to wear”:
- Color Fastness: resistance to sunlight, washing, rubbing (dry/wet), and perspiration, graded 1–5, higher being better.
- Pilling: fibers entangle into balls, related to fiber strength, twist, and fabric structure.
- Physical and mechanical indicators such as drape coefficient, wrinkle recovery angle, and tear/burst strength.
- pH value, formaldehyde content, and decomposable carcinogenic aromatic amine dyes fall under eco-textile safety limits (e.g. OEKO-TEX® STANDARD 100, GB 18401).
6. Apparel Engineering: From Fabric to Garment
- Pattern: a 2D development of the 3D human body; Dart removes excess allowance to fit the chest, waist, and hips.
- Grading: based on a base size, enlarging or reducing each size by grade rules.
- Sewing technology: stitch types (e.g. lockstitch 301, chainstitch 401), Stitch Density (SPM / stitches per unit length), and pressing/shaping.
- Trims: lining, interlining (Fusing), zippers, buttons, and sewing thread (polyester thread / bonded thread).
7. Sustainability: Closed-Loop and Recycling
- GRS (Global Recycled Standard) and rPET (recycled polyester, re-pelletized and spun from PET bottle flakes).
- Bio-based fibers: PLA (polylactic acid, fermented from corn starch), and mycelium leather.
- The difficulty lies in blend separation (e.g. cotton-polyester blends are hard to separate cost-effectively), which is a current scientific frontier in textile circularity.