Fibre Tressée © 2026 — updated 2026-10-30.
**At the outset:** Toray indicates that small tows (1,000 to 6,000 filaments) suit tight fabrics and prepregs that require good drapability, while standard tows (12K to 36K) serve high-throughput applications. The Laws of Badminton limit the racket to 680 mm in overall length and 230 mm in width, and the strung area to 280 mm by 220 mm, but they do not require any particular material: the “T700 carbon” label is the manufacturer’s choice, not a regulatory requirement. Toray notes that its carbon fibers show little thermal deformation, with a coefficient of thermal expansion along the fiber axis of about −0.4 to −1.0 × 10⁻⁶/K, as well as electrical conductivity and good chemical resistance.
**At the outset:** The Laws of Badminton limit the racket to 680 mm in overall length and 230 mm in width, and the strung area to 280 mm by 220 mm, but they do not require any particular material: the “T700 carbon” label is the manufacturer’s choice, not a regulatory requirement. Toray presents the T700S as a standard-modulus, high tensile strength fiber, with processing characteristics suited to filament winding, weaving, and prepreg. The Toray T700S carbon fiber has a tensile strength of 711 ksi, or 4,900 MPa.
**At the outset:** the feathers of a regulation shuttlecock have a uniform length of between 62 and 70 mm, and their tips form a circle 58 to 68 mm in diameter. The base of a regulation shuttlecock measures 25 to 28 mm in diameter, and the shuttlecock weighs 4.74 to 5.50 grams. The USA Pickleball spin test uses PaddleVision, a two-camera system developed by the Swedish company Image Systems, and sets a threshold of 2,100 rpm that must not be exceeded.
