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  • Modern Loom

    EDITED BY

    MD. ARMAN SARKER

    KHONDOKER PAVEL

    SABRINA AKTAR

    DEPARTMENT OF TEXTILE ENGINEERING

  • What is Loom?

    o Device or Machine.

    o Used to Produce Woven Fabric.

    o Central Point of Fabric Production.

  • Modern Loom

    o Shuttle Less loom.

    o Development during 20th century.

    o Driven by Electric power.

    o Complex design.

    o High speed.,

  • Classification of Modern Loom

    Projectile

    Rapier

    Air jet

    Water jet

    Multi phase.

  • Projectile Loom.

    This picking action is accomplished by a series of small bullet projectiles which grip the filing yarn and carry it through the shed and return empty.

  • Features

    Accommodator used reduce tension

    Power consumption is less (3 kw-hr)

    No. of projectile 11 to 17

    Width minimum 190 cm

    Width maximum 540 cm

    Multiple fabric produce

    Application: Double beam single fabric can be produced in projectile.

  • Projectile Loom

    Advantages Fashionable fabric may produce

    Drawing-in pinning of drop wires and knotting are accepted practice

    The weft and warp stop motions actuate first and reliable

    Simple to operate and maintain

    Less noisy then shuttle looms.

    Disadvantages Require skilled personnel

    High initial investment

    High noisy than jet loom

    It lasted long

  • Rapier Loom

  • Rapier Loom

    These loom are competitors to the missille looms.There are two types of rapier looms.

    Long/single rapier

    Double Rapier

    long/single rapier that carries the weft across the width from one side of the loom to another.Double rapier that is one on each side of the loom.

  • Rapier Loom

    Features: Production costly.

    Power consumption moderate

    Simple mechanism

    Suitable for weft patterning

    Standard rapier width 190 cm.

    Application: Fancy fabric produced.

  • Rapier Loom

    Advantages Suitable for weft patterning

    Power consumption moderate

    Simple mechanism Production speed (200-260 ppm)

    Disadvantages Noise level is high then jet loom

    Production speed is less then jet loom.

  • Air jet Loom

  • Air jet Loom

    Air jet weaving loom is that, at which jet of air is used to propel the weft yarn through the shed at a speed of up to 600 ppm.

    They are suitable use with medium weight yarns then very light and very heavy yarn.

  • Air jet Loom

    Features:

    Power consumption less

    Much production std. Fabric and light to medium fabric produced

    Air jet std.width 190 cm.

    Highest weft insertion performance(600 ppm)

    Multi color weft insertion up to 8

    Application :Light and medium fabric has produced.

  • Air jet Loom

    Advantages Air jet standard. width 190 cm.

    Power consumption less

    Highest weft insertion performance(600 ppm)

    Noise levels is lower than missile and rapier loom.

    Disadvantages Due to air resistance there form pile up and buckle tip of yarn

    Some times there is formed loom of weft yarn along weft direction due to variation of air pressure.

    Double pick may occurred

    Excess air pressure of main nozzle cause miss pick or broken pick.

  • Water jet

  • Water jet loom

    A pre measured length of filling yarn is carried across the loom by a jet of water. It can produce superior quality of fabrics.

    Features:

    Less power consumption

    Highest weft insertion (600 ppm)

    weft yarn package weight 3.6-4.1 kg

    Treated water are used by pump nozzle.

    Application: Non absorbent fibre like synthetic fabric

  • Water jet Loom

    Advantages Less power consumption

    Production rate is high

    Noise level is lower then missile and rapier loom

    Disadvantages Not suitable for absorbent fibre like (cotton)

    By hard water may form rust on the yarn.

  • Multi phase Loom

  • Multi phase Loom

    Several sheds are opened simultaneously and weft is inserted in them by several carriers.

    Several phases of the weaving cycle take place at any instant so that several picks are being inserted simultaneously.

  • Multi phase Loom

    Wave shed machines (Weft way multiphase)

    Weft carriers move in straight path

    Circular weaving machines (weft carriers travel in circular path)

    Parallel shed machines (Warp way multiphase)

    Rapier

    Air jet.

  • Multi-phase Loom

    AdvantagesAs the weft carrier enters one portion of the warp the shed is formed ,as the carrier leaves that area, the shed changes.

    The action may occur simultaneously across the width of the warp several times.

    Disadvantages Missing picks cannot be easily repaired.

    Warp and weft threads are not perfectly perpendicular to each other.

  • References

    Textile Learner Blog Spot.com

    NEPTEL

    Google

    Slide Share.com

    Prof.Dr.E Onders Article.

  • Thank you