LYCRA® is a man-made elastic fibre invented and produced only by DuPont . It is INVISTA’s trademark for a synthetic fabric material with elastic properties of the sort known generically as “spandex”. Lycra is commonly used in athletic or active clothing. Lycra as a clothing material is fetishized by some people, perhaps on the basis that the garment forms a “second skin” that acts as a fetishistic surrogate for the wearer’s own skin. This is known as lycra fetishism. Lycra is normally one of…
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Tag: Introduction
Introduction of Lycra | Properties of Lycra Yarn | Application/Uses of Lycra Yarn
Introduction of Textile Testing and Quality Control
Testing : Testing is the procedure or process to determines the standard of the product.
Quality : The expression standard pertains the quality of the product. Whenever you state the standard of the product is wise . We mean which the product is advantageous for the cause for that it was produced.
Control : To check or check plus therefore to control.
Quality Control : Quality control is the artificial plus usual control of the varying that affect the standard of the product.
The operational techniques plus…
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Introduction of Under Lap | Closed Lap | Open Lap
The Under Lap The underlap shog happens over the side of the needles remote within the hooks found on the front of single-needle bar, plus inside the centre of double-needle bar, warp knitting machines. It supplies the warp yarn between 1 overlap as well as the upcoming (Fig.A).The underlap shog usually ranges from 0 with 3 needle spaces, however it may be 14 needle spaces or even more depending on the shape of the machine as well as the cloth structure (though efficiency plus manufacturing speed is correspondingly…
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Introduction of Glass Fiber | Types of Glass Fiber | Properties of Glass Fiber | Manufacturing Processes of Glass Fiber | Uses of Glass Fiber or Glass Yarn
Glass fiber
Glass fiber also known as fiberglass. It is information made of very fine materials of glass Fiberglass is a lightweight, very sturdy, plus robust information. Although strength qualities are somewhat lower than carbon fiber plus it’s less stiff, the information is usually far less brittle, as well as the raw components are a lot less pricey. Its bulk strength plus fat qualities are moreover really positive compared to metals, plus it may be conveniently created utilizing molding processes. Glass…
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Introduction of Direct Dyes | Classification of Direct Dye | Application of Direct Dyes | Aftertreatment of Direct Dye
Direct Dye is a class of dyestuffs which are used straight with the substrate inside a neutral or alkaline shower. They make full shades about cotton plus linen without mordanting plus may furthermore be used with rayon, silk, plus wool. Direct dyes provide bright shades yet display bad washfastness. Various aftertreatments are utilized with enhance the washfastness of direct dyes, plus these dyes are called “aftertreated direct hues.”Direct Dyes are molecules which follow the cloth molecules without aid…
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Introduction of Blowroom Section | Objects of Blow-room | Basic Operations in the Blowroom
Blowroom
Blowroom consists a amount of machines employed about succession with open plus clean the cotton fibre. Because the tuft size of cotton becomes small plus small, the needed intensities of processing necessitates different machine configuration.
Objects of Blowroom:
1. Opening: a) To open the compressed bales of fibres.b) To result in the cotton tuft because little because far because potential.
2. Cleaning:To eliminate dirt, dust, broken seeds, broken leaves, plus alternative foreign components from…
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Introduction of Nanofibers | Properties of Nanofibers | Uses of Nanofibers
Nanofibers are an exciting new class of material used for several value added applications such as medical, filtration, barrier, wipes, personal care, composite, garments, insulation, and energy storage. Special properties of nanofibers make them suitable for a wide range of applications from medical to consumer products and industrial to high-tech applications for aerospace, capacitors, transistors, drug delivery systems, battery separators, energy storage, fuel cells, and information technology.
Usually, polymeric nanofibers are yielded by an electrospinning process (Figure 1). Electrospinning is a procedure which spins materials of diameters ranging from 10nm with many 100 nanometers. This way has been acknowledged because 1934 whenever the initial patent about electrospinning was filed. Fiber attributes rely about field uniformity, polymer viscosity, electrical field strength plus DCD (distance between nozzle plus collector). Advancements inside microscopy like scanning electron microscopy has enabled you with greater recognize the structure plus morphology of nanofibers. At present the creation rate of the task is low plus calculated inside grams per hr.
Another technique for producing nanofibers is spinning bi-component materials like Islands-In-The-Sea materials inside 1-3 denier filaments with from 240 with perhaps because much because 1120 filaments encircled by dissolvable polymer. Dissolving the polymer leaves the matrix of nanofibers, that is further separated by stretching or mechanical agitation.
The most frequently utilized materials inside this technique are nylon, polystyrene, polyacrylonitrile, polycarbonate, PEO, PET plus water-soluble polymers. The polymer ratio is usually 80% islands plus 20% sea. The resulting nanofibers following dissolving the sea polymer component have a diameter of around 300 nm. Compared with electrospinning, nanofibers yielded with this technique usually have a quite narrow diameter range however, are coarser .
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| Figure 1. Schematic representation of electrospinning process |
Properties of Nanofibers
Nanofibers display unique attributes mostly due with very excellent surface with weight ratio compared with traditional nonwovens.
Lower density, big surface location with mass, excellent pore amount, plus tight pore size result in the nanofiber nonwoven appropriate for a variety of filtration applications [9].
Figure 3 shows how much small nanofibers are compared with a human hair, that is 50-150 µm plus Figure 4 shows the scale of the pollen particle compared with nanofibers. The elastic modulus of polymeric nanofibers of lower than 350 nm is found with be 1.0±0.2 Gpa.
Application of Nanofibers
Filtration
Nanofibers have significant applications in the area of filtration since their surface area is substantially greater and have smaller micropores than melt blown (MB) webs. High porous structure with high surface area makes them ideally suited for many filtration applications. Nanofibers are ideally suited for filtering submicron particles from air or water.
Medical Application
Electrospun fibers have diameters three or more times smaller than that of MB fibers. This leads to a corresponding increase in surface area and decrease in basis weight.
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| Figure . Comparison of red blood cell with nanofibers web |
