Develop a comprehensive understanding of:
Technical data help you choose the most suitable fibre for a design brief.
| Material | Source | Key Properties (typical values) |
Typical Uses | Sustainability Notes |
|---|---|---|---|---|
| Cotton (Upland) | Plant – seed fibre | Denier: 1.2–2.0 g/9 km; Tensile strength: 300–500 MPa; Moisture regain: 7–8 % | Casual wear, t‑shirts, denim, shirting | High water & pesticide demand; organic cotton cuts water use by ~50 % and eliminates synthetic chemicals. |
| Wool (Sheep) | Animal – fleece | Denier: 1.5–3.0 g/9 km; Tensile strength: 250–400 MPa; Thermal conductivity: 0.04 W m⁻¹ K⁻¹ | Sweaters, coats, suits, technical outerwear | Renewable & biodegradable; low impact when sourced from responsibly managed flocks. |
| Silk (Bombyx mori) | Animal – cocoon protein fibre | Denier: 1.0–1.5 g/9 km; Tensile strength: 400–600 MPa; Elongation: 15–20 % | Evening gowns, scarves, linings, luxury accessories | Biodegradable; production can be water‑intensive and labour‑intensive – consider “peace silk” or certified sericulture. |
| Linen (Flax) | Plant – bast fibre | Denier: 0.8–1.5 g/9 km; Tensile strength: 300–500 MPa; Moisture regain: 9–12 % | Summer garments, table‑linens, upholstery | Low pesticide use; fully biodegradable; high water use is offset by low chemical inputs. |
| Polyester (PET) | Synthetic – petroleum‑based | Denier: 0.5–1.0 g/9 km; Tensile strength: 500–800 MPa; Water repellency: high | Activewear, blends, outerwear, fast‑fashion basics | Non‑biodegradable; high CO₂ footprint; recyclable (r‑PET) reduces impact by ~60 %. |
| Viscose / Rayon (Regenerated cellulose) | Semi‑synthetic – wood pulp | Denier: 1.0–2.0 g/9 km; Tensile strength: 250–350 MPa; Drape: excellent | Blouses, dresses, linings, drapery | Chemical‑intensive; closed‑loop processes (e.g., Lenzing Tencel) dramatically lower water and solvent use. |
| Recycled Polyester (r‑PET) | Post‑consumer PET bottles or reclaimed garments | Same mechanical properties as virgin PET; CO₂ reduction ≈ 60 % | Sportswear, jackets, blended fabrics | Diverts waste from landfill; lower energy demand; still non‑biodegradable. |
| Up‑cycled Denim | Pre‑used cotton denim | Retains original cotton strength; variable wear resistance depending on prior use | Patchwork garments, accessories, sustainable fashion pieces | Extends product life; minimal new resource input; can be combined with natural dyes for added value. |
| Smart Textiles (e.g., conductive yarn, phase‑change fibres) | Hybrid – synthetic blends with functional additives | Conductivity: 10⁻⁶ S m⁻¹; Thermal regulation: ±5 °C around body temperature | Wearable tech, sports monitoring, adaptive outerwear | Emerging sustainability issues – modular design aids recycling; energy‑harvesting fibres can offset carbon use. |
Copy the simple diagram below into your design notebook and fill in each stage with specific details for your project.
| Stage | What to Record |
|---|---|
| Fibre Extraction | Source, fibre type, sustainability notes. |
| Spinning / Filament Production | Yarn count, twist, any special treatments. |
| Fabric Construction | Weave/knit structure, density (ends‑per‑inch, courses‑per‑inch). |
| Finishing & Dyeing | Dye type, colour codes, mechanical/chemical finishes. |
| Garment Assembly | Pattern pieces, seam types, fasteners, finishing trims. |
| Material | Water Use (L kg⁻¹ fibre) | CO₂ Emissions (kg CO₂ eq kg⁻¹) | Social Sustainability | End‑of‑Life Options |
|---|---|---|---|---|
| Cotton (conventional) | ≈ 10 000 | ≈ 5.5 | Often grown on large farms with high pesticide use; labour standards vary. | Biodegradable; compostable; can be up‑cycled. |
| Organic Cotton | ≈ 5 000 | ≈ 3.5 | Certified farms follow strict labour and environmental standards. | Biodegradable; compostable; suitable for circular schemes. |
| Polyester (virgin PET) | ≈ 30 | ≈ 9.5 | Derived from fossil fuels; production often in regions with lax worker protections. | Non‑biodegradable; recyclable if collected in proper streams. |
| Recycled Polyester (r‑PET) | ≈ 30 | ≈ 3.5 | Reduces demand for virgin petro‑resources; recycling facilities may have better health & safety standards. | Re‑recyclable; reduces landfill volume. |
| Wool | ≈ 2 500 | ≈ 2.0 | Often sourced from farms with animal‑welfare certifications; fair‑trade options available. | Biodegradable; can be up‑cycled into insulation or felt. |
| Silk | ≈ 2 000 | ≈ 2.5 | Traditional sericulture can be labour‑intensive; “peace silk” offers a cruelty‑free alternative. | Biodegradable; limited recycling options. |
When selecting a material, balance performance, environmental impact, and social considerations. Design strategies such as zero‑waste pattern making, modular construction, and planned‑end‑of‑life (re‑use, recycling, composting) help improve overall sustainability.
Use this checklist in your sketchbook when researching a craft. Record both visual and contextual information.
| Aspect | What to Capture |
|---|---|
| Historical Context | Origin date, evolution, cultural significance; annotate with dates and key events. |
| Materials & Tools | Fibre type, dye sources, loom/needle/printing tools; include close‑up sketches or photographs. |
| Symbolic Meanings | Colour codes, motif language, ceremonial uses; create a legend in the margin. |
| Technique Demonstration | Step‑by‑step diagram of the process (e.g., shibori binding, block‑printing sequence). |
| Contemporary Adaptations | Designer collaborations, market positioning, modern material substitutions. |
| Ethical Considerations | Intellectual‑property rights, fair‑trade certification, community benefits. |
Choose at least two techniques, document the process, and reflect on how each influences the final aesthetic and sustainability of your design.
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