Textile Dictionary ,WORDS V

V

1. VARIANT: A manufactured fiber modified in polymer configuration or by additive during manufacture, leading to a change within the properties of the fiber. Examples are flame-retardant variants, deep-dyeing variants, high-tenacity variants, low-pilling variants, and cotton-blending or wool-blending variants.

2. V-BED FLAT-KNITTING MACHINE: A latch-needle weft-knitting machine with two needlebeds at a 90° angle to every other within the sort of an inverted V. Each needlebed is at a 45° angle to the horizontal. These machines are used primarily to supply collars, sleeves, sweater strips, and rib trims.

3. VECTRAN FIBER: Manufactured fiber spun from Celanese Vectra® liquid polymer. These fibers have high-temperature resistance, high strength and modulus, and high resistance to moisture and chemicals, with good property retention in hostile environments. they're used as matrix fibers for advanced composites and as reinforcing fibers in advanced composites, ropes and cables, and in electronics applications.

4. VEGETABLE FIBER: A textile fiber of vegetable origin, like cotton, kapok, jute, ramie, and flax.

5. VELOUR: 1. Generally, a soft, closely woven fabric with a brief , thick pile, weighting about 10 to twenty ounces per yard and made during a plain or weave . Velour is typically made from cotton or wool, or with a cotton warp in wool, silk, or mohair velour. it's also made in blends of spun manufactured fiber and wool. Velours are used for coats, draperies, upholstery, powder puffs, and other pile items. 2. A felt with velvet-like texture used for men’s and women’s hats.

6. VELVET CARPET: A woven carpet during which the pile ends are lifted over wires that are inserted within the same manner because the filling which cut the pile as they're withdrawn.

7. VELVETEEN: a cloth with a coffee filling pile made by cutting an additional set of filling yarns woven during a float formation and sure to the rear of the fabric at intervals by weaving over and under one or more warp ends.

8. VELVET FABRIC: A warp-pile woven fabric with short, dense cut pile that produces an upscale fabric appearance and soft texture. Two methods are used for weaving velvets. within the double-cloth method, two fabrics are woven face to face with the pile ends interlocking. A reciprocating knife cuts through these pile ends to supply two separate pieces of velvet. within the second method, pile ends are lifted over cutting wires that are inserted with the filling which are withdrawn to chop the pile. Velvet is produced during a wide selection of constructions and kinds . Originally made from silk, but now also of cotton or manufactured fibers giving fabrics that are sometimes washable. the material are often specially finished to form it crush-resistant and water-repellent or it's going to be embossed or patterned by burn-out printing.

9. VIBROSCOPE: An instrument for determining the mass per unit length of a fiber.

10. VINAL FIBER: A manufactured fiber during which the fiber-forming substance is any long chain synthetic polymer composed of a minimum of 50% by weight of vinyl alcohol units and during which the entire of the vinyl alcohol units and anybody or more of the varied acetal units is a minimum of 85% by weight of the fiber. Vinal fibers show good chemical resistance but soften at comparatively low temperatures. Vinal fibers are used for attire , industrial goods, and fishnets.

11. VINYL: A univalent radical, (CH2=CH-), derived from ethylene.

12. VINYLIDENE CHLORIDE: A chemical material obtained from ethylene, a petroleum product, and from chlorine. it's used for the manufacture of textile monofilaments and film. 

13. VINYON FIBER: A manufactured fiber during which the fiber-forming substance is any long chain synthetic polymer composed of a minimum of 85% by weight of vinyl chloride units.

14. VISCOMETER: a tool designed to live the viscosity (resistance to flow) of the fluid. many sorts exist from simple calibrated glass tubes to extensively instrumented, on-line shear viscometers.

15. VISCOSE PROCESS: 1. one among the methods of manufacturing rayon. 2. The chemical change utilized in the manufacture of cellophane. 

16. VISCOSE RAYON: One sort of rayon. it's produced in far greater quantity than cuprammonium rayon, the opposite commercial type. 

17. VISCOSE SOLUTION: the answer obtained by dissolving viscose in sodium hydroxide , from which viscose filaments and cellophane are produced.

18. VISCOSITY: the interior flow resistance of a fluid. 

19. VOILE FABRIC: A sheer spun cloth that's lightweight and soft. it's usually made with cylindrical, combed yarn. Voile is employed for blouses, children’s wear, draperies, bedspreads, etc.

20. VOLATILE: Readily vaporized at a comparatively coldness .

21. VOLATILITY: Property of getting a coffee boiling point or temperature of sublimation at normal pressure. Likewise, having a high vapour pressure at ambient conditions.

22. VOLUME RESISTIVITY: The ration of the potential gradient parallel to the direction of current flow during a compound to the present density after a specified time of voltage application.