Fiber Properties and Characteristics
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Questions and Answers

Which fiber is known for being one of the lightest synthetic fibers and has excellent elastic recovery?

  • Olefin (correct)
  • Polyester
  • Saran
  • Aramids
  • Which fiber was discovered as a derivative of coal, air, water, and petroleum?

  • Spandex
  • Olefin
  • Saran
  • Polyester (correct)
  • What is a key characteristic of glass fiber?

  • Inherent resistance to flame (correct)
  • High abrasion resistance
  • Low flexibility of weave
  • High moisture absorbency
  • Which fiber is noted for its resemblance to silk in luster and weight?

    <p>Polynude Nylon</p> Signup and view all the answers

    Which fiber is mainly used for outdoor furniture upholstery and screening?

    <p>Saran</p> Signup and view all the answers

    What unique property does spandex have?

    <p>Can be stretched over 500% without breaking</p> Signup and view all the answers

    Which synthetic fiber is incredibly strong, even stronger than comparably sized steel?

    <p>Aramids</p> Signup and view all the answers

    Which fiber is typically used in hospital cubicle curtains due to its washability and drip-dry property?

    <p>Polyester</p> Signup and view all the answers

    Which fiber is frequently blended with other fibers to enhance their performance?

    <p>Polyester</p> Signup and view all the answers

    Which fiber is mainly used as a barrier fabric in seating and in bullet-resistant vests?

    <p>Aramids</p> Signup and view all the answers

    What is a characteristic of circular knit fabric?

    <p>It is made on a circular machine and produces a tubular fabric without seams.</p> Signup and view all the answers

    Which type of knitted fabric has a smooth surface on both sides?

    <p>Interlock knit</p> Signup and view all the answers

    Which knitted fabric is known for its excellent body and stability?

    <p>Double knit</p> Signup and view all the answers

    What is a distinctive feature of Milanese knitted fabric?

    <p>It is lightweight with a fine texture and run-proof.</p> Signup and view all the answers

    Which type of fabric is produced by silver knitting to create a deep pile effect?

    <p>Knit pile</p> Signup and view all the answers

    What does 'tricoter' mean in French, relating to tricot fabric?

    <p>To knit</p> Signup and view all the answers

    Which straw material has a dull finish and is fine and lightweight?

    <p>Baku</p> Signup and view all the answers

    What type of knitted fabric has less body, substance, and stability than double knit?

    <p>Single knit</p> Signup and view all the answers

    What is another name for an Irregular Weave?

    <p>Unbalanced Weave</p> Signup and view all the answers

    Which type of weave has a diagonal texture and results from heavier weft yarn compared to warp yarn?

    <p>Rib Weave</p> Signup and view all the answers

    Which weave emphasizes the continuous weft yarn with minimal warp interruptions, producing a smooth, shiny surface?

    <p>Satin Weave</p> Signup and view all the answers

    In which weave do two or more weft threads interlace with the same number of warp threads?

    <p>Plain Double or Basket Weave</p> Signup and view all the answers

    What is a form of satin weave made from mercerized cotton where filler yarns dominate the face of the textile?

    <p>Sateen</p> Signup and view all the answers

    Which type of weave results in an appearance of a predominantly diagonal pattern offset by one thread from the previous weft thread?

    <p>Twill Weave</p> Signup and view all the answers

    Which weave involves creating loops or piles that stand out from the fabric surface and is woven with three fibers?

    <p>Pile Weave</p> Signup and view all the answers

    Which weave is known for resisting soil, wrinkling less, and being more flexible and drapeable than plain weaves of similar quality?

    <p>Twill Weave</p> Signup and view all the answers

    What is created by lifting the second set of warp yarns into a plain weave to create a solid back?

    <p>Velvet Pile</p> Signup and view all the answers

    Which of the following combines with velvet pile to form a corduroy-like effect?

    <p>Frise</p> Signup and view all the answers

    What is tapestry essentially?

    <p>A plain weave</p> Signup and view all the answers

    Which loom is most commonly used for weaving tapestry?

    <p>Jacquard loom</p> Signup and view all the answers

    Which ancient people are thought to have introduced tapestry weaving to the Egyptians?

    <p>Syrians</p> Signup and view all the answers

    Which early group of Egyptian Christians were known for their tapestry weaving?

    <p>Copts</p> Signup and view all the answers

    In tapestry weaving, what is done to produce shading?

    <p>Cross hatching at right angles to the weave</p> Signup and view all the answers

    Where did the Moors settle to help refine tapestry weaving?

    <p>Creuse Valley</p> Signup and view all the answers

    Which of the following is NOT a country mentioned for producing tapestries of extraordinary loveliness?

    <p>Egypt</p> Signup and view all the answers

    When did the Navajo first transition from weaving blankets to rugs?

    <p>1890</p> Signup and view all the answers

    What determines the fineness of a tapestry?

    <p>The number of wefts to the centimeter</p> Signup and view all the answers

    Which type of loom was considered inferior during the Middle Ages?

    <p>Low-warp loom</p> Signup and view all the answers

    What was the significant improvement made by Vaucanson in 1757?

    <p>Creation of a swinging loom</p> Signup and view all the answers

    What invisible element is often found in tapestry?

    <p>Warps</p> Signup and view all the answers

    In high-warp weaving, how did the weaver monitor the progress of their work?

    <p>Using mirrors placed in front</p> Signup and view all the answers

    What were high-warp looms also known as?

    <p>Vertical looms</p> Signup and view all the answers

    Which material was typically used for the wefts in tapestry?

    <p>Wool</p> Signup and view all the answers

    What was a major disadvantage of the low-warp method?

    <p>Inability to see the work until completed</p> Signup and view all the answers

    What is an example of an extra warp and weft pattern weave?

    <p>Inlay-pattern weaving</p> Signup and view all the answers

    What characterizes the Leno weave?

    <p>A loose weave with warp threads twisted around each other</p> Signup and view all the answers

    What defines a grey or greige fabric?

    <p>Fabric full of impurities and blemishes</p> Signup and view all the answers

    Which type of finish lasts until the fabric is washed or dry-cleaned?

    <p>Temporary finish</p> Signup and view all the answers

    What type of weave is produced by uneven tension in either the weft or warp yarns?

    <p>Tension and texture-related</p> Signup and view all the answers

    What finish category includes changes that affect the texture and appearance of the cloth?

    <p>General</p> Signup and view all the answers

    Which civilization was known to use double-cloth weaves?

    <p>Ancient Peru</p> Signup and view all the answers

    How does a temporary finish compare to a durable finish?

    <p>It is removable by washing or dry-cleaning</p> Signup and view all the answers

    What is the main characteristic of microfibers?

    <p>They are synthetic fibers</p> Signup and view all the answers

    Which method of fabric formation results in a firm, slightly fuzzy cloth with no grain or direction?

    <p>Felting</p> Signup and view all the answers

    What is the main advantage of fabrics produced by knitting compared to weaving?

    <p>Dimensionally stable knit fabrics</p> Signup and view all the answers

    What characteristic of microfibers make them ideal for use in upholsteries?

    <p>Ability to mimic suede</p> Signup and view all the answers

    Which stitch is used to make elastic fabrics?

    <p>Rib Stitches</p> Signup and view all the answers

    What discovery represents the oldest known knitted fabric?

    <p>A pair of heavy, hand-knitted wool socks from Egypt</p> Signup and view all the answers

    Who constructed the first knitting machine?

    <p>An Englishman, Reverend William Lee</p> Signup and view all the answers

    What stitch forms a smooth-face material used in fine, thin, or sheer fabrics?

    <p>Plain Stitches</p> Signup and view all the answers

    What prerequisite technique eliminates the cut-and-sew or sheet stage to produce the finished film product?

    <p>New film techniques</p> Signup and view all the answers

    What are the vertical rows of stitches in knitting called?

    <p>Wales</p> Signup and view all the answers

    What is the purpose of sanforizing?

    <p>To make the fabric dimensionally stable</p> Signup and view all the answers

    Which process is used to remove impurities and unwanted color from yarns or fabrics?

    <p>Bleaching</p> Signup and view all the answers

    What does calendering do to the fabric?

    <p>It makes the fabric smooth and glossy</p> Signup and view all the answers

    Which process involves treating the fabric with a concentrated solution of sodium hydroxide?

    <p>Mercerizing</p> Signup and view all the answers

    What is the main objective of special finishes?

    <p>To impart additional features improving utility and comfort</p> Signup and view all the answers

    Which process is specifically used for enhancing luster, strength, and absorbency in cotton?

    <p>Mercerizing</p> Signup and view all the answers

    What does dry decating involve in its process?

    <p>Padding the cloth with water-soluble gums and passing over a heated cylinder</p> Signup and view all the answers

    Which of the following refers to the formation of small, entangled fiber balls on the fabric surface?

    <p>Pilling</p> Signup and view all the answers

    What is the primary purpose of a mildew-resistant finish on fabrics?

    <p>To prevent the growth of mold and mildew</p> Signup and view all the answers

    Which component is used in an anti-shrink finish to inhibit bacterial growth?

    <p>Biocide</p> Signup and view all the answers

    What type of finish is typically used on synthetic fabrics to prevent static electricity accumulation?

    <p>Antistatic Finish</p> Signup and view all the answers

    Which finish involves treating the fabric with a chemical solution that contains phosphorus or nitrogen?

    <p>Flame-Retardant Finish</p> Signup and view all the answers

    What is the main function of the glaze finish?

    <p>To create a smooth and shiny surface</p> Signup and view all the answers

    Which finish is often used to make fabrics easier to clean?

    <p>Soil-Release Finish</p> Signup and view all the answers

    What chemical is commonly associated with a permanent-press finish?

    <p>Formaldehyde</p> Signup and view all the answers

    In which process are fabrics shaped and passed through a heated machine at a specific temperature to set the cloth?

    <p>Heat-setting</p> Signup and view all the answers

    Which material is made from Teguila sisal primarily in Ecuador?

    <p>Panama</p> Signup and view all the answers

    What is the main characteristic of the Rush material?

    <p>Yellow-stained straw made from special wheat grown in Tuscany</p> Signup and view all the answers

    Which method involves intertwining and knotting of yarns?

    <p>Twisting</p> Signup and view all the answers

    What is the function of a loom in the weaving process?

    <p>To hold the warp threads under tension</p> Signup and view all the answers

    Which type of weave consists of warp and weft threads that are evenly spaced?

    <p>Plain Weave</p> Signup and view all the answers

    What type of loom uses punched cards to control complex patterns?

    <p>Jacquard Loom</p> Signup and view all the answers

    What distinguishes a Damask Weave from other weaves?

    <p>Warp and weft yarns are of different colors interlaced to show figures on one side</p> Signup and view all the answers

    What is the key feature of the Jacquard Mechanism?

    <p>Simplifies weaving by using punched cards for complex patterns</p> Signup and view all the answers

    Study Notes

    Materials of Decoration

    Synthetic Fibers

    • Olefin fibers:
      • Strong, lightweight, and resistant to mildew, rot, moths, and vermin
      • Has excellent elastic recovery
      • Used in airplane seats
    • Polyester:
      • Discovered in 1953
      • Derivative of coal, air, water, and petroleum
      • Resistant to air-borne and oil-borne dirt, low moisture absorbency, wrinkle resistance, high strength, and resiliency
      • Washable and drip-dry, with excellent crease resistance
      • Frequently blended with other fibers to enhance their performance
      • Used in hospital cubicle curtains
    • Glass Fiber:
      • Inherently resistant to flame
      • Strong and does not absorb moisture
      • Low abrasion resistance
      • Can be dyed well
      • Best used as drapery or casement cloth
    • Polynude Nylon:
      • Chemical fiber with similar make-up to nylon
      • Outperforms existing synthetics in washability, wrinkle resistance, and ease of care
      • Does not shrink
      • Resembles silk in luster, weight, color, and feel
    • Saran:
      • Used for outdoor furniture upholstery and screening
      • Unaffected by sunlight, easy to care, wrinkle resistant, and abrasion resistant
      • High crease retention and dyeability
      • Usually blended with rayon and modacrylic
    • Spandex:
      • Manufactured elastomeric fiber
      • Can be repeatedly stretched over 500% without breaking
      • Permits manufacturers to add stretch to fabrics without altering hand or appearance
      • Can be permanent pressed, soil-resistant, washable, and does not discolor
    • Aramids:
      • Unique properties, unaffected by alkalis, acids, and solvents
      • Marketed under trade names Nomex and Kevlar
      • Nomex is a high temperature-resistant fiber used in apparel such as firefighters clothing and space suits
      • Kevlar is a high-temperature-resistant fiber used in bullet-resistant vests

    Microfibers

    • Very fine, smaller than the diameter of a strand of silk
    • Made from polyesters and polyamides
    • Used to make mats, knits, and weaves for apparel, upholstery, cleaning products, etc.
    • Chosen for specific characteristics including softness, toughness, water repellency, electrostatics, and filtering capabilities

    Methods of Fabric Formation

    • Felting:
      • Matting together of fibers to form a web by moisture, pressure, and heat
      • Results in a continuous dense cloth that is firm, slightly fuzzy, and comparatively low in tensile strength
    • Films:
      • Produced originally in sheet forms through extrusion
      • Can be finished in highly varied forms
    • Knitting:
      • Utilizes machinery with blunt rods or needles to form a single continuous yarn into a series of interlocking loops
      • Sometimes faster than weaving and produces dimensionally stable knit fabrics

    History of Knitting

    • Early history of knitting dates back to ancient Egypt and Europe
    • Knitting was perfected in the 15th century
    • First knitting machine was constructed by Reverend William Lee

    Knitting Stitches

    • Plain Stitches:
      • Produce a smooth-face material
      • Used in making fine, thin, or sheer fabrics
    • Rib Stitches:
      • Produce lines of wales on both sides of the fabric
      • Cause the fabric to be very elastic
    • Tuck Stitches:
      • Formed by holding one loop on a needle while taking on one or more additional loops and then casting all of them onto another needle

    Knit Fabric Construction

    • Circular Knit:
      • Made on a circular machine
      • Produces a tubular fabric without seams
    • Ribbed Fabric:
      • Made with two sets of needles to give a ribbed or corrugated surface to the fabric
    • Flat Outerwear:
      • Fabric is made by having the needles arranged in a straight line
    • Flat Underwear:
      • Fabric is made on a machine with only one set of needles

    Types of Knitted Fabric

    • Double Knit:
      • A fabric knitted with a double stitch on a double needle frame
      • Provides a double thickness that is the same on both sides
      • Has excellent body and stability
    • Interlock Knit:
      • A special type of eight-lock knit cloth
      • Has a smooth surface on both sides
    • Jersey:
      • A plain stitch knitted fabric
    • Knit Pile:
      • Fabric produced by silver knitting
      • Provides an exceptionally deep pile effect
    • Milanese Knit:
      • Known for its high gauge, lightweight, fine texture, and appeal in hand
      • Warps always move in the opposite direction with the full threading or color arrangement to produce a run-proof fabric
    • Plated:
      • A knit fabric that has one kind of yarn on the face while another type is found on the back of the goods
    • Rachel Knit:
      • A versatile fabric that can be made from every type of yarn of any type of fiber in any form
    • Single Knit:
      • A fabric knitted on a single-needle machine
      • Has less body, substance, and stability than double knit
    • Tricot:
      • A type of Warp-knitted fabric
      • Has a thin texture since it is made from fine yarn
    • Velour:
      • A popular knit fabric with properties similar to woven velour

    Braiding

    • The interweaving or intertwining of three or more strands of yarn or other material
    • Can produce flat, narrow tapes or strips as well as center-cored rounds or hollow tubes
    • Suitable for shaped articles
    • Notable examples include STRAWS, fabrics made by braiding natural plant fibers

    Weaving

    • Definition: The interlacing of warp (lengthwise) yarns and weft (crosswise) yarns, usually at right angles
    • Six turning points can occur along a single thread, and different arrangements of these points create three general headings: Plain, Twill, and Satin
    • Weaving can be regular or irregular

    Types of Weaves

    • Plain Weave:
      • When the warp and weft threads are balanced and evenly spaced
    • Figured Weave:
      • Also known as a "brocade", this is the simplest of weaves that has two warps, one warp for the figures and a separate warp for the ground
    • Damask Weave:
      • A figured weave in which the warp yarns are of one color and the weft yarns are of another color
    • Satin Weave:
      • A weave in which the warp or weft yarns predominate on the face of the fabric
    • Twill Weave:
      • Each warp yam passes over and then under the weft yarns
      • The sequence is started slightly higher (or lower) on each successive yarn
      • Resists soil, wrinkles less, and is more flexible and drapeable than plain weaves of similar quality
    • Herringbone Weave:
      • A variation of the twill weave
    • Pile Weaves:
      • Refers to fabrics that are woven in such a way as to create loops or piles that stand out from the surface of the fabric
    • Velvet Pile:
      • Created by lifting the second set of warp yarns into a plain weave to create a solid back
      • Warping for the plain weave solid back, and set of warp form loop slightly higher than the backing weave
    • Frise:
      • Combined with the velvet pile, except that the lifted yarns remain uncut
      • May be combined with the velvet pile to form a “corduroy” like effect

    Tapestry

    • Definition: A decorative fabric made by weaving colored weft threads alternatively over and under the warp threads to form a pictorial, or ornamental design
    • History: Known since ancient times, with a rich history of development and refinement
    • Technique: Weft does not pass from selvage to selvage but only as far as the color is required by the pattern
    • Warps are eventually hidden
    • Tapestries were woven on either a high-warp or a low-warp loom
    • The high-warp loom stood upright and warps were manually controlled by harnessed attached to treadles
    • The low-warp loom was placed horizontally
    • Fineness: Judged by the number of wefts to the centimeter
    • Illustrations: Diagrams of Interlocked joint, Slit juncture, and Dovetail joint### Fabric Finishes
    • Fabrics are not ready for consumer use after weaving or knitting and require further processing to change their appearance, texture, and performance.

    Classification of Finishes

    • Finishes can be classified based on their duration, including:
      • Temporary Finish: lasts until the fabric is washed or dry-cleaned
      • Durable Finish: lasts longer than temporary but may become unsatisfactory with time
      • Permanent Finish: lasts until the garment is no longer in service
    • Finishes can also be classified based on their purpose, including:
      • General Finish: affects the texture and appearance of the fabric
      • Special Finish: affects the performance of the fabric and imparts additional features

    General Finishes

    • Sanforizing: a process that makes fabric dimensionally stable, controlling shrinkage by passing the fabric through a hot water and steam chamber and stretching it in width and allowing it to relax in length.
    • Bleaching: removes impurities and unwanted color from yarns or fabrics, using hydrogen peroxide for cotton and removing waxes and foreign matters for synthetics.
    • Calendering: makes fabric smooth and glossy by passing it between heated and polished steel rollers under tension.
    • Decating: a process that improves the appearance, handle, and hand of the material, including Wet Decating and Dry Decating.
    • Mercerizing: improves the luster, strength, and absorbency of cotton yarn and fabrics by treating them with a concentrated solution of sodium hydroxide.
    • Pilling: the formation of small, entangled, fiber balls on the fabric surface, which depends on the type of fiber, yarn structure, fabric construction, and finishing treatment.
    • Shrinkage control: reduces or eliminates shrinkage in woven and knitted fabrics using methods such as relaxation, heat setting, and chemical treatments.

    Special Finishes

    • Anti-Shrink Finish: a chemical treatment that makes a fabric "shrink-resistant" and imparts a self-sanitizing quality.
    • Antistatic Finish: a chemical treatment that prevents the accumulation of static electricity on synthetic fabrics.
    • Crease-Resistant Finish: makes fabrics easier to iron and keeps them looking pressed by applying a resin bath that forms a protective layer on the fibers.
    • Flame-Retardant Finish: makes fabrics less flammable by treating them with a chemical solution containing phosphorus or nitrogen.
    • Glazed Finish: creates a smooth and shiny surface by passing the fabric through heated rollers.
    • Mildew-Resistant Finish: prevents the growth of mold and mildew by treating the fabric with a chemical solution containing copper or zinc.
    • Permanent-Press Finish: makes fabrics wrinkle-resistant and easier to care for by treating them with a chemical solution containing formaldehyde.
    • Soil-Release Finish: makes fabrics easier to clean by treating them with a chemical solution containing silicone or fluorocarbon.
    • Water-Repellent Finish: makes fabrics repel water by treating them with a chemical solution containing a long-chain hydrocarbon.

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    Test your knowledge of various fibers, including their properties, characteristics, and uses. Identify fibers based on their weight, elasticity, and luster.

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