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Course topics
Performance textiles
A performance textile is selected to deliver one or more defined functions in use. Begin with the wearer, environment, activity and care cycle, then translate broad language such as “breathable,” “stretch,” “waterproof” or “protective” into measurable requirements. Relevant properties may include tensile and tear strength, abrasion, dimensional stability, air or water-vapour permeability, liquid repellency, hydrostatic resistance, thermal behaviour, UV transmission, stretch and recovery.
Performance comes from a system: fibre, yarn, fabric construction, membrane or coating, finish, seam, garment architecture and care all interact. ISO lists standardized methods for fabric elasticity and water absorption, while AATCC distinguishes test procedures for properties such as spray repellency and UV transmission.[1][2][3] Test new and aged specimens because laundering, abrasion, flexing and contamination can change results. Record sampling, pre-conditioning, test atmosphere, specimen direction and equipment calibration so results can be compared and reproduced; ISO’s textile-testing committee specifically covers conditioning atmospheres and physical test methods for fabrics.[15]
- Write a ranked performance specification before sourcing samples.
- Test the final material combination and critical seams, not only the face fabric.
- Balance protection with comfort, mobility, weight and noise.
- Use precise claims tied to a method, condition and result.
Application: Develop a material brief for a lightweight outer layer, specifying required tests, minimum results, care cycles and the garment details needed to preserve performance.
Smart fabrics
Smart fabrics sense, respond or adapt to an environmental change or external signal. ISO/TR 23383 provides definitions, categories, application areas and standardization needs for smart textiles, distinguishing a functional textile from a smart textile system with an intended, exploitable response.[4] A design may integrate conductive yarns, printed circuits, sensors, switches, heating elements, light, shape-memory behaviour, energy storage, antennas or data transmission.
Map the complete signal path: stimulus, sensor, interconnection, processing, power, actuator, feedback and user interface. Integration must survive drape, stretch, sweat, bending, abrasion and care while remaining safe against heat, pressure, sharp components, electrical failure and skin irritation. ISO 24584 illustrates the need for quantitative electrical characterization through sheet-resistance testing of conductive textile structures.[5]
- Place rigid components away from high-flex and high-pressure body zones.
- Design detachable power or electronics when laundering requires removal.
- Test function before, during and after repeated wear and care cycles.
- Address repair, battery handling, data privacy and end-of-life separation.
Application: Prototype a textile interaction with one input and one output. Deliver a circuit map, attachment method, risk assessment, care protocol and failure test.
Knitwear
Knitted fabrics are built from intermeshing loops, giving them extensibility and shape response that differ from woven structures. Identify whether the material is weft or warp knitted, then examine gauge, yarn, loop length, courses, wales, weight, stretch, recovery, opacity, curl, run tendency and dimensional stability. These variables determine silhouette, ease, pattern reduction, seam type, support and care.
CottonWorks describes jersey as a versatile single knit with greater widthwise than lengthwise extension and edges that may curl or run. Rib structures open like an accordion and offer high widthwise stretch, while interlock links two rib structures into a more stable double knit with matching faces and little curl.[6] Stabilize the fabric before pattern cutting and test recovery after repeated extension.
- Record relaxed, extended and recovered dimensions in both directions.
- Use ballpoint or stretch-appropriate needles to reduce yarn damage.
- Select extensible seams that meet the garment’s dressing requirement.
- Support shoulders, openings and closures only where stability is needed.
Application: Compare jersey, rib and interlock for the same fitted top. Recommend ease, seam, hem, stabilization and care settings for each structure.
Woven fabrics
Woven fabric interlaces lengthwise warp and crosswise weft yarns. The relationship among fibre, yarn size and twist, sett, weave, weight and finish controls hand, cover, drape, strength, fraying, wrinkle response and dimensional stability. CottonWorks identifies plain, twill and satin as the three fundamental weave families from which more complex structures are developed.[7]
Plain weave has frequent interlacings and can provide stability; twill creates diagonal progression and often accommodates denser, more pliable constructions; satin uses longer floats for lustre and smoothness but may snag. Inspect true grain, bow, skew, face, nap and repeat before cutting. A garment may require interfacing, stay tape, underlining or seam changes when the selected weave does not supply enough local stability.
- Compare warp, weft and bias behaviour before choosing pattern orientation.
- Test seam slippage, fraying and needle damage on production offcuts.
- Plan matching and one-way requirements into consumption and marker layout.
- Condition and pre-treat fabric according to the intended care method.
Application: Build a weave-analysis sheet for three fabrics, including thread direction, weave diagram, physical behaviour, suitable silhouette and construction risks.
Leather
Leather is a non-uniform sheet material whose strength, stretch, thickness, surface and defects vary across each hide or skin. Specify animal type, grain or split layer, tanning system, finish, temper, substance, colour, usable area and performance requirements. Inspect every hide under consistent light and map scars, holes, loose grain, growth marks, shade variation and directional stretch before nesting patterns.
Construction may require leather-point needles, bonded thread, longer stitch lengths, walking or compound feed, skived overlaps, tapes, adhesives and non-destructive positioning because pin holes remain visible. ASTM maintains dedicated leather tests for tensile strength, elongation, abrasion and finish flexing.[8] For responsible sourcing, the Leather Working Group manufacturer standard covers environmental management, traceability, chemical management, social responsibility and governance.[9]
- Grade hides by usable zones for the specific product, not only total area.
- Pair visible components for shade, grain and directional stretch.
- Test adhesive compatibility, seam strength, edge finish and colour transfer.
- Document origin and chain-of-custody evidence without overstating certification.
Application: Create a hide-nesting plan for a small leather product, marking quality zones, defects, paired components, skiving and reinforcement.
Denim
Denim is commonly a warp-faced twill made with indigo-dyed warp yarns and undyed filling yarns. Construction, yarn count and spinning method, fabric weight, elastane content, dye penetration and finish determine strength, stretch, recovery, shade and ageing. CottonWorks explains that indigo typically ring-dyes the yarn, concentrating colour near the surface around a lighter core; abrasion and washing can therefore reveal high contrast.[10]
Evaluate skew, shrinkage, growth, crocking, shade continuity, seam performance and the exact wash recipe before pattern approval. Heavy or rigid denim may require stronger feeding, needles, threads and reinforcement, while stretch denim needs seams that extend without cracking. Garment finishing can include desizing, enzyme treatment, abrasion, softening, overdyeing, laser or resin processes, each with consequences for appearance, strength, water, chemistry and reproducibility.[11]
- Segregate rolls by shade and identify every cut component by lot.
- Approve measurements after the intended wash, not only in loomstate form.
- Place bartacks or rivets only after testing local thickness and tearing risk.
- Use a controlled wash standard and record processing tolerances.
Application: Develop a denim wash trial with raw, rinsed and finished specimens. Compare shade, hand, shrinkage, skew, strength and garment-measurement change.
Technical textiles
Technical textiles are defined primarily by a technical function rather than decorative value. The category includes materials for protection, medicine, transport, sport, filtration, construction, agriculture and geotechnical use. A European Commission preparatory study describes functions such as reinforcement, filtration, fire resistance, conductivity, insulation, flexibility and absorption, noting that the definition depends on end use rather than a particular fibre or manufacturing technology.[12]
Treat a technical garment or accessory as a system of layers, seams, closures, interfaces and coverage zones. Begin with the applicable hazard or use standard and required performance level; choose material only after the certification and test route is understood. Prototype mobility and compatibility with other equipment, then test the final assembly under relevant conditioning and ageing.
- Define the hazard, exposure, user population and foreseeable misuse.
- Preserve functional zones when cutting, seaming or adding decoration.
- Control traceability for materials, test reports and production lots.
- Never convert a laboratory result into a protection claim outside its scope.
Application: Write a technical-textile specification for one use case, including system layers, standard references, required tests, failure modes and user-care instructions.
Sustainable materials
No fibre is sustainable in every context. Evaluate the production system, geography, feedstock, land and water impacts, chemistry, energy, labour and human rights, animal welfare, traceability, durability, care, recyclability and likely end of life. Compare options within the same intended function and avoid shifting impact—for example, reducing one resource while shortening garment life or creating an unrecyclable blend.
Textile Exchange’s Fiber and Materials Matrix uses a broader LCA+ framework and organizes assessment around climate, nature, people, animals and governance.[13] Its guidance warns against treating a universal preferred-material list as sufficient and emphasizes outcomes within production systems.[14] Require transaction-level evidence where claims depend on certification or chain of custody, and keep marketing language no broader than the evidence.
- Start with lower demand, efficient cutting, durability and repairable design.
- Verify recycled, organic, regenerative or responsible claims through applicable scope.
- Design components for care compatibility and practical disassembly.
- Record trade-offs and uncertainty in the material decision.
Application: Compare three candidate materials for one product using a weighted scorecard covering performance, sourcing evidence, impacts, durability, cost and end-of-life route.
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