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Air-Jet Spun Yarn

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Mukhopadhyay A – One of the best experts on this subject based on the ideXlab platform.

  • Blend irregularity and migratory behaviour of blend constituents in AJS polyester-viscose Yarns
    NISCAIR-CSIR India, 1999
    Co-Authors: Punj S K, Mukhopadhyay A

    Abstract:

    247-252Image analyzer has been used to study the
    effect of blend percentage on blend irregularity both in the cross -section and
    on the surface of polyester- viscose blended Air-Jet Spun Yarn. This method is rapid
    and precise enough to determine zone wise number distribution of the blend constituents
    in Yarn cross-section. Within and between zone variance and index of blend irregularity
    values are derived which reflect the extent of blend irregularity for blowroom and
    drawframe blended Yarns. The above parameters are minimum for polyester-viscose
    (67:33) blowroom blended Yarns and higher for extreme blends. Migratory behaviour
    of polyester and viscose fibres with the change in blend proportion has also been
    studied using tracer fibres. Migratory behaviour of fibers is found to get influenced
    by blend proportion apart from the intrinsic characteristics of fibres. In the blended
    Yarns, viscose component migrates from core to surface. Polyester-rich blended Yarn
    possesses maximum wraps/mm and cork-screw type of structure

  • Effect of extension rate and gauge length on tensile behaviour of ring and Air-Jet Spun Yarns
    NISCAIR-CSIR India, 1998
    Co-Authors: Punj S K, Mukhopadhyay A, Chakraborty A

    Abstract:

    19-24A
    comparison of the Yarns Spun on MJS and
    ring spinning system shows that both the tenacity and breaking elongation are
    higher for ring-Spun Yarn at all extension rates and gauge lengths. With the
    increase of polyester fibre content in blend, tenacity and breaking elongation
    increase with greater impact on Air-Jet Spun Yarn in majority of the cases.
    With the increase in extension rate, tenacity increases up to a certain limit
    beyond which a further increase in extension rate causes drop in tenacity. In
    short gauge lengths, the maximum tenacity is obtained at lower rate of
    extension than is tenable from the long gauge lengths. At very long gauge
    length (500 mm), the tenacity of Air-Jet Yarn shows no decrease with the
    increase in extension rate. As the gauge length becomes shorter the tenacity
    and breaking elongation increase for both types of Yarn. The effect of change
    in extension rate and gauge length is more pronounced on Air-Jet Yarn than
    ring-Spun Yarn and the F-ratio values on tenacity also reflect this. Breaking
    elongation increases with corresponding increase in extension rate and decrease
    in gauge length with some exception. Although the F-ratio values for breaking
    elongation show that the effects of change in these parameters are very much
    significant, no specific trend is obtained.

  • Effect of various softeners on the performance of polyester-viscose ring and Air-Jet Spun Yarn fabrics
    NISCAIR-CSIR India, 1998
    Co-Authors: Sharma I C, Mukhopadhyay A, Chatterjee K N, Chattopadhyay D P, Kumar A

    Abstract:

    44-48The
    effects of various softeners, viz. cellulase enzyme, caustic soda, a
    combination of cellulase enzyme and caustic soda, and non-ionic softener on the
    performance of twill fabrics made from polyester-viscose ring and Air-Jet Spun
    Yarns have been investigated in terms of flexural rigidity, tensile strength
    and crease recovery. The influence of pick density on the above properties has
    also been studied. It is observed that crease recovery and flexural rigidity
    improve considerably for the fabrics treated with cellulase enzyme followed by
    caustic soda, reasonably for the fabrics treated individually with the
    cellulase enzyme and caustic soda and marginally for the fabrics treated with
    non-ionic softener. On the other hand, the fabric strength is affected in all
    the above cases to a small extent. The effect of chemical treatment is greater
    on the mechanical properties of Air-Jet Spun Yarn fabrics. With varying pick
    density, the response of Air-Jet Yarn fabrics to chemical agents is different
    than that of ring Yarn fabrics. Improvement increase recovery and flexural
    rigidity is greater for Air-Jet Yarn fabrics at the cost of reduced tensile
    strength.

Punj S K – One of the best experts on this subject based on the ideXlab platform.

  • Influence of material parameters and thermal treatment on structure and properties of polyester Air-Jet Spun Yarn
    'CSIRO Publishing', 2007
    Co-Authors: Mahish, Sudipta S, Punj S K, Singh Gagandeep

    Abstract:

    150-157The effect of thermal treatment (dry and wet) under slack conditions, blend ratio and fibre cross-section on the structure and properties of Air-Jet Spun Yarns has been studied. It is observed that the thermal treatment, particularly in wet condition, increases the linear density, helix angle, helix diameter, breaking extension and abrasion resistance and decreases the mean fibre extent, tenacity and flexural rigidity of the Yarns. The increase in amount of coarser denier fibre exhibits higher helix diameter, mean fibre extent, Yarn tenacity, breaking extension, abrasion resistance and flexural rigidity, and lower helix angle. The increase in trilobal fibre content in the blend shows increased helix diameter and mean fibre extent, and lower helix angle, Yarn tenacity, breaking extension, abrasion resistance and flexural rigidity in the Yarn

  • Blend irregularity and migratory behaviour of blend constituents in AJS polyester-viscose Yarns
    NISCAIR-CSIR India, 1999
    Co-Authors: Punj S K, Mukhopadhyay A

    Abstract:

    247-252Image analyzer has been used to study the
    effect of blend percentage on blend irregularity both in the cross -section and
    on the surface of polyester- viscose blended Air-Jet Spun Yarn. This method is rapid
    and precise enough to determine zone wise number distribution of the blend constituents
    in Yarn cross-section. Within and between zone variance and index of blend irregularity
    values are derived which reflect the extent of blend irregularity for blowroom and
    drawframe blended Yarns. The above parameters are minimum for polyester-viscose
    (67:33) blowroom blended Yarns and higher for extreme blends. Migratory behaviour
    of polyester and viscose fibres with the change in blend proportion has also been
    studied using tracer fibres. Migratory behaviour of fibers is found to get influenced
    by blend proportion apart from the intrinsic characteristics of fibres. In the blended
    Yarns, viscose component migrates from core to surface. Polyester-rich blended Yarn
    possesses maximum wraps/mm and cork-screw type of structure

  • Effect of some machine variables on structure and properties of polyester-viscose Air-Jet Spun Yarn
    NISCAIR-CSIR India, 1998
    Co-Authors: Punj S K, Moitra Koushik, Behera B K

    Abstract:

    85-93The effects of second jet
    pressure, spinning speed and condenser width on the structure and properties of
    polyester-viscose blended jet-Spun Yarn have been studied. Tracer fibre
    technique has been used for the structural analysis of the Yarn and the Yarn
    properties such as tenacity, CSP, flexural rigidity, hairiness, unevenness and
    imperfections have been determined and explained in the light of structural
    parameters. Increase in wraps/mm has been observed with the increase in both
    jet pressure and Spinning speed. Increase in jet pressure increases Yarn
    tenacity and flexural rigidity but decreases Yarn hairiness. Maximum Yarn
    tenacity is obtained at 180m/min spinning speed and at comparatively high
    second jet pressure(4 kg/cm2). Increase in spinning speed increases
    U%, imperfections and hairiness.

Kumar A – One of the best experts on this subject based on the ideXlab platform.

  • Effect of various softeners on the performance of polyester-viscose ring and Air-Jet Spun Yarn fabrics
    NISCAIR-CSIR India, 1998
    Co-Authors: Sharma I C, Mukhopadhyay A, Chatterjee K N, Chattopadhyay D P, Kumar A

    Abstract:

    44-48The
    effects of various softeners, viz. cellulase enzyme, caustic soda, a
    combination of cellulase enzyme and caustic soda, and non-ionic softener on the
    performance of twill fabrics made from polyester-viscose ring and Air-Jet Spun
    Yarns have been investigated in terms of flexural rigidity, tensile strength
    and crease recovery. The influence of pick density on the above properties has
    also been studied. It is observed that crease recovery and flexural rigidity
    improve considerably for the fabrics treated with cellulase enzyme followed by
    caustic soda, reasonably for the fabrics treated individually with the
    cellulase enzyme and caustic soda and marginally for the fabrics treated with
    non-ionic softener. On the other hand, the fabric strength is affected in all
    the above cases to a small extent. The effect of chemical treatment is greater
    on the mechanical properties of Air-Jet Spun Yarn fabrics. With varying pick
    density, the response of Air-Jet Yarn fabrics to chemical agents is different
    than that of ring Yarn fabrics. Improvement increase recovery and flexural
    rigidity is greater for Air-Jet Yarn fabrics at the cost of reduced tensile
    strength.

  • A comparative study of ring and Air-Jet Spun Yarn fabrics in grey and finished state
    NISCAIR-CSIR India, 1997
    Co-Authors: Sharma I C, Mukhopadhyay A, Chatterjee K N, Chattopadhyay D P, Kumar A

    Abstract:

    176-183The effects of finishing
    treatments and constructional parameters such as pick density and weave on the
    appearance (crease recovery and pilling propensity), handle (drapability and
    flexural rigidity) and durability (tensile strength) of ring-Spun and Air-Jet
    Spun Yarn fabrics have been studied. It is observed that after processing,
    pilling propensity, flexural rigidity, crease recovery, drape and tensile
    strength of the fabrics improve considerably. For similar pick density the
    plain woven fabrics have higher pilling resistance and breaking strength but
    exhibit lower crease recovery and flexibility than twill and satin fabrics.