Cross section (fiber)

Last updated

The cross section depicts the shape of the various textile fibers. Each textile fiber offers a distinct cross sectional appearance when seen under a microscope. The shapes vary from round to oval and flat, different shapes determines certain characteristics of the textiles. Though the majority of synthetic fibers have a circular cross section, but the shape could be altered or engineered during the manufacturing process. The cross-sectional shape is responsible for certain physical properties of textile fibers such as the luster of textiles. [1] [2]

Contents

Significance

The cross-section of a fiber has an effect on the appearance, hand, drape, flexibility, and moisture wicking properties. [3] The cross sectional shape or form of the fibers specifies their texture. Numerous physical characteristics such as hand, bulkiness, and luster are associated with cross sectional shape. [2] Synthetic fibers with a more regular surface seem brighter than natural fibers with an irregular surface, with the exception of silk, which has a regular surface. [4] [5] [6] [7]

Different shapes have their own significance; for example, the trilobal cross section contributes several physical properties to the fibres, including strength and static properties, in addition to providing brightness.. [8] Furthermore, the trilobal cross sectional shape of filament aids in the reduction of manufacturing defects. [9]

Shapes

Textile fibers come in a variety of shapes and forms. The fiber shape of synthetic fibers is controlled with a device spinneret during manufacturing (extrusion) process, whereas natural fibers conceive their shape with a variety of factors such as cellulose built up in plant fibers, and in silk, the shape of orifice from where the silk fibers are extruded. In hair fibers, it is hair follicle that is responsible for the shape. [2]

Shape of fibers and characteristics [10] :27
ShapeCharacteristics of the fiber
Oval or roundSmooth, soft and slippery feel, reflectance value high, poor covering properties.
Dog boneFeels harsher than round shaped fibers, high luster, covering properties excellent.
FlatReflection of light is higher than that of a round shape.
TrilobalTrilobal fibers have three sides, they feel like silk fibers and reflection of light is higher than that round shaped fibers.
PentalobalPentalobal is a structure resembling a five-sided star. The Pentalobal shaped fibre imparts a subtle sheen and bulkiness.
OctolobalOctolobal, a shape with compressed hexagons. The fibers with Octolobal shape have subdued luster. Flatter sides reflect or disperse the light.
MultilobalMultilobal, a fibre shape characterised by a large number of pentalobal lobes. Each lobe reflects light in some way.

See also

Related Research Articles

<span class="mw-page-title-main">Textile</span> Various fiber-based materials

Textile is an umbrella term that includes various fiber-based materials, including fibers, yarns, filaments, threads, different fabric types, etc. At first, the word "textiles" only referred to woven fabrics. However, weaving is not the only manufacturing method, and many other methods were later developed to form textile structures based on their intended use. Knitting and non-woven are other popular types of fabric manufacturing. In the contemporary world, textiles satisfy the material needs for versatile applications, from simple daily clothing to bulletproof jackets, spacesuits, and doctor's gowns.

<span class="mw-page-title-main">Yarn</span> Long continuous length of interlocked fibres

Yarn is a long continuous length of interlocked fibres, used in sewing, crocheting, knitting, weaving, embroidery, ropemaking, and the production of textiles. Thread is a type of yarn intended for sewing by hand or machine. Modern manufactured sewing threads may be finished with wax or other lubricants to withstand the stresses involved in sewing. Embroidery threads are yarns specifically designed for needlework. Yarn can be made of a number of natural or synthetic materials, and comes in a variety of colors and thicknesses. Although yarn may be dyed different colours, most yarns are solid coloured with a uniform hue.

<span class="mw-page-title-main">Fiber</span> Natural or synthetic substance made of long, thin filaments

Fiber or fibre is a natural or artificial substance that is significantly longer than it is wide. Fibers are often used in the manufacture of other materials. The strongest engineering materials often incorporate fibers, for example carbon fiber and ultra-high-molecular-weight polyethylene.

<span class="mw-page-title-main">Dyeing</span> Process of adding color to textile products

Dyeing is the application of dyes or pigments on textile materials such as fibers, yarns, and fabrics with the goal of achieving color with desired color fastness. Dyeing is normally done in a special solution containing dyes and particular chemical material. Dye molecules are fixed to the fiber by absorption, diffusion, or bonding with temperature and time being key controlling factors. The bond between the dye molecule and fiber may be strong or weak, depending on the dye used. Dyeing and printing are different applications; in printing, color is applied to a localized area with desired patterns. In dyeing, it is applied to the entire textile.

<span class="mw-page-title-main">Ninon</span> Lightweight, transparent sheer fabric

Ninon is a lightweight, sheer fabric made with plain or leno weaving, it is a suitable material for curtains, evening wear and lingerie. Ninon is made with variety of filament yarns such as polyester, silk, rayon or nylon.

A staple fiber is a textile fiber of discrete length. The opposite is a filament fiber, which comes in continuous lengths. Staple length is a characteristic fiber length of a sample of staple fibers. A fiber is made up of natural substances and is known for being longer than it is wide. It is an essential criterion in yarn spinning, and aids in cohesion and twisting. Compared to synthetic fibers, natural fibers tend to have different and shorter lengths. The quality of natural fibers like cotton is categorized into staple length such as short, medium, long staple, and extra-long. Gossypium barbadense, one of several cotton species, produces extra-long staple fibers. The staple fibers may be obtained from natural and synthetic sources. In the case of synthetics and blends, the filament yarns are cut to a predetermined length.

<span class="mw-page-title-main">Textile bleaching</span> Textile wet process that improves whiteness by removing natural color

The textile bleaching is one of the steps in the textile manufacturing process. The objective of bleaching is to remove the natural color for the following steps such as dyeing or printing or to achieve full white. All raw textile materials, when they are in natural form, are known as 'greige' material. They have their natural color, odor and impurities that are not suited to clothing materials. Not only the natural impurities will remain in the greige material, but also the add-ons that were made during its cultivation, growth and manufacture in the form of pesticides, fungicides, worm killers, sizes, lubricants, etc. The removal of these natural coloring matters and add-ons during the previous state of manufacturing is called scouring and bleaching.

<span class="mw-page-title-main">Finishing (textiles)</span> Manufacturing process

In textile manufacturing, finishing refers to the processes that convert the woven or knitted cloth into a usable material and more specifically to any process performed after dyeing the yarn or fabric to improve the look, performance, or "hand" (feel) of the finish textile or clothing. The precise meaning depends on context.

Dimensional stability pertains to a fabric's ability to maintain its initial size and shape even after undergoing wear and care, which is a desirable property. Dimension stability in fabrics or Shrinkage is the change of dimensions in textile products when they are washed or relaxed. The change is always expressed relative to the dimensions before the exposure of washing or relaxing. Shrinkage is also called residual shrinkage and measured in percentage. The major cause of shrinkages is the release of stresses and strains introduced in manufacturing processes. Textile manufacturing is based on the conversion of fiber into yarn, yarn into fabric, includes spinning, weaving, or knitting, etc. The fabric passes through many inevitable changes and mechanical forces during this journey. When the products are immersed in water, the water acts as a relaxing medium, and all stresses and strains are relaxed and the fabric tries to come back to its original state.

Fabric inspection, also known as fabric checking, is a systematic fabric evaluation in which defects are identified. Fabric inspection helps understand quality in terms of color, density, weight, printing, measurement, and other quality criteria prior to garment production. Fabric inspection takes place at various stages of manufacturing, including intermediate and final. "Perching" was another term for fabric inspection.

<span class="mw-page-title-main">Greige goods</span> Woven or knitted fabrics which are not yet dyed or finished.

Greige goods are loom state woven fabrics, or unprocessed knitted fabrics. Greige goods undergo many subsequent processes, for instance, dyeing, printing, bleaching, and finishing, prior to further converting to finished goods such as clothing, or other textile products. "Grey fabrics" is another term to refer to unfinished woven or knitted fabrics.

<span class="mw-page-title-main">Hand feel</span> Feel of the fabrics to the skin or hand

Hand feel is the property of fabrics related to the touch that expresses sensory comfort. It refers to the way fabrics feel against the skin or in the hand and conveys information about the cloth's softness and smoothness. Hand feel is an estimated and subjective property of different fabrics, but nowadays, hand feel could be measured and assessed statistically.

Momie cloth is a pebble-surfaced crêpe structure made of any natural or synthetic yarns. Momie crepe is a light weight material made of cotton.

<span class="mw-page-title-main">Textile performance</span> Fitness for purpose of textiles

Textile performance, also known as fitness for purpose, is a textile's capacity to withstand various conditions, environments, and hazards, qualifying it for particular uses. The performance of textile products influences their appearance, comfort, durability, and protection. Different textile applications require a different set of performance parameters. As a result, the specifications determine the level of performance of a textile product. Textile testing certifies the product's conformity to buying specification. It describes product manufactured for non-aesthetic purposes, where fitness for purpose is the primary criterion. Engineering of high-performance fabrics presents a unique set of challenges.

<span class="mw-page-title-main">Luster (textiles)</span> Physical property of textiles that makes them appear bright, glossy, and shiny.

In textiles, lustre or luster is a physical property that makes them appear bright, glossy, and shiny. The amount of light reflected from the surface of a fiber is referred to as its luster. The level of luster is determined by how light reflects off the surface. For example, round surfaced fiber reflects more light and appears shinier than fiber with an irregular surface. Synthetic fibers with a more regular surface seem brighter than natural fibers with an irregular surface, with the exception of silk, which has a regular surface.

In fibers, trilobal is a cross-section shape with three distinct sides. The shape is advantageous for optical reflective properties and is used in textile fibers. Silk fibers' rounded edges and triangular cross section contribute to their luster; in some cases, synthetic fibers are manufactured to mimic this trilobal shape to give them a silk-like appearance. Filaments with a round cross section have less brilliance than trilobal filaments.

Malimo is a textile manufacturing technique in which warp and weft yarns are sewn together. The method is also referred to as "stitch-bonding." It was invented in Eastern Germany in the 1950s. Malimo is used in a variety of applications, including apparel fabrics, wind turbine wings and isolation fabrics, and aerospace.

A blend is a mixture of two or more fibers. In yarn spinning, different compositions, lengths, diameters, or colors may be combined to create a blend. Blended textiles are fabrics or yarns produced with a combination of two or more types of different fibers, or yarns to obtain desired traits and aesthetics. Blending is possible at various stages of textile manufacturing. The term, blend, refers to spun fibers or a fabric composed of such fibers. There are several synonymous terms: a combination yarn is made up of two strands of different fibers twisted together to form a ply; a mixture or mixed cloth refers to blended cloths in which different types of yarns are used in warp and weft sides.

The surface contour of the fiber characterizes its outer surface along its shaft and may be rough, smooth, scaly, serrated, convoluted, or striated, all of which contribute to the friction, softness, and texture. The property is important for the texture and feel of the fabric that is made. Natural fibers, like cotton and wool, have a staple length and irregular, void-filled surface contours. The rough surface aids in the capture of fine particles. Due to the fact that they are not completely solid, they are more compressible. The fiber's microstructures include its cross section shape and surface contour.

<span class="mw-page-title-main">Aesthetics (textile)</span> Concept of serviceability of textiles

Aesthetics in textiles is one of the basic concepts of serviceability of textiles. It is determined by the perception of touch and sight. Aesthetics imply the appearance and attraction of textile products; it includes the color and texture of the material. It is a statement about the end user (consumer) and the target market. When combined with fabric construction, the finish of the clothing material, garment fit, style, and fashion compatibility, colours create an aesthetic comfort. All of these elements work together to satisfy our visual perception. Aesthetics incorporates the role of evaluation also.

References

  1. Gioello, Debbie Ann (1982). Understanding fabrics : from fiber to finished cloth. Internet Archive. New York : Fairchild Publications. p. 26. ISBN   978-0-87005-377-1.
  2. 1 2 3 Hollen, Norma R.; Saddler, Jane (1968). Textiles. Internet Archive. New York, Macmillan. p. 6.
  3. "Textile Yarn - an overview | ScienceDirect Topics". www.sciencedirect.com. Retrieved 2022-05-05.
  4. Joseph, Marjory L. (1992). Joseph's introductory textile science. Internet Archive. Fort Worth : Harcourt Brace Jovanovich College Publishers. pp. 24, 25. ISBN   978-0-03-050723-6.
  5. Potter, Maurice David; Corbman, Bernard P. (1959). Fiber to Fabric. Gregg Pub. Division., McGraw-Hill. p. 14.
  6. Anstey, H. (Helen) (1997). The Anstey Weston guide to textile terms. Internet Archive. [Great Britain] : Weston. pp. 45, 46. ISBN   978-0-9530130-0-5.
  7. "Luster - an overview | ScienceDirect Topics". www.sciencedirect.com. Retrieved 2021-08-24.
  8. Textiles. British Textile Technology Group. 1991. p. 2.
  9. Buckley, John D.; Edie, Dan D. (2012-12-02). Carbon-Carbon Materials and Composites. William Andrew. p. 62. ISBN   978-0-8155-1629-3.
  10. Gioello, Debbie Ann (1982). Understanding fabrics : from fiber to finished cloth. Internet Archive. New York : Fairchild Publications. ISBN   978-0-87005-377-1.