Basic of Rib Fabric ( Part 2)

  • Sinker timing refers to the synchronization and positioning of the sinker within the knitting process, particularly in relation to the needles.
  • Needle timing in knitting refers to the precise coordination and positioning of the knitting needles within the knitting machine’s cycle. It involves ensuring that the needles move at the correct time to form stitches and manipulate the yarn as required for the specific knitting pattern or fabric being produced. Proper needle timing is crucial for producing high-quality knitted products and preventing issues such as dropped stitches or fabric defects.
  • Rib gating, also known as rib knitting or ribbing, is a common knitting technique used to create a stretchy and textured fabric. It is often used for cuffs, collars, and hems in various garments, including sweaters, socks, and scarves.In rib gating, two different knitting stitches, typically knit stitches (k) and purl stitches (p), are alternated in a specific pattern. The most common ribbing patterns are 1×1 rib and 2×2 rib:
    1×1 Rib: In this pattern, one knit stitch is followed by one purl stitch, creating a uniform and stretchy fabric with alternating vertical columns of knit and purl stitches. Example: k1, p1, k1, p1, and so on.
    2×2 Rib: In this pattern, two knit stitches are followed by two purl stitches, or vice versa, creating a thicker and more textured fabric. Example: k2, p2, k2, p2, and so on.
    Rib gating is known for its elasticity, as the alternating knit and purl stitches allow the fabric to stretch and recover easily. It’s a versatile technique that adds both functional and aesthetic value to knitted items. The choice of ribbing pattern and the number of rows or rounds worked can be adjusted to achieve different effects and textures in the final product.
  • Needle gating, refers to the alignment and synchronization of two beds of knitting needles and their housings in a knitting machine, whether it’s a circular (dial and cylinder) knitting machine or a flat bed knitting machine.
    In knitting machines, there are usually two sets of needles: one set in the dial (cylinder) and another set in the cylinder (dial). These needles work together to create knitted fabric. Proper alignment and synchronization of these two sets of needles are crucial for the knitting process to produce the desired results. This alignment ensures that the needles from both beds interact correctly to form the stitches and patterns in the fabric.
    The term “needle gating” essentially describes the precise coordination and positioning of these two needle beds to achieve the intended knitting pattern and fabric structure. It involves adjusting the timing and spacing of the needles to control various aspects of the knitting process, such as stitch size, fabric tension, and pattern design.
  • Synchronized timing in knitting refers to the specific coordination of the cylinder and dial needles in a knitting machine. When synchronized timing is in place:
    1. The cylinder and dial needles work together to knock over their knitted loops simultaneously.
    2. This synchronization occurs when the two positions align, and the yarn is pulled in alternating directions by the needles, creating high tension during loop formation.
    3. In synchronized timing, the depth at which the cylinder needles knock over their loops must match the depth at which the dial needles do the same.
    4. Synchronized timing is suitable for most knitting machines and can be used for various rib and interlock knitted structures.
    However, it is not suitable for:
    Fabrics with laid-in yarns.
    Knitting patterns that involve simultaneous tucking at both the cylinder and dial needles.
    Rib and interlock-based pile fabrics.
  • Delayed timing in knitting refers to the deliberate timing difference between the dial needles and the corresponding cylinder needles in a knitting machine.
    Here’s how delayed timing works:
    1. In delayed timing, the dial needles knock over their knitted loops later than the cylinder needles.
    2. This delay ensures that the dial knock-over occurs after approximately four-cylinder needles have drawn loops and are slightly rising to relieve the strain.
    3. Dial loops, in this case, are composed of the extended loops drawn over the dial needle stems during cylinder knock-over, with some yarn robbed from the cylinder loops.
    4. As a result, dial loops are larger than cylinder loops, leading to a tighter, more rigid, heavier, and wider fabric.
    5. Additionally, less strain is exerted on the yarn during the stitch formation process.
    Advantages of using delayed timing include:
    1. Tighter fabric structure.
    2. Evenly formed stitches.
    3. Improved fabric rigidity.
    4. Heavier and wider fabric dimensions.
    5. Reduced strain on the yarn during stitch formation.
    6. Longer dial stitches compared to cylinder stitches.
  • Advanced timing in knitting is essentially the opposite of delayed timing. In advanced timing:
    1. The cylinder loops rob yarn from the dial needles, resulting in tighter dial loops.
    2. This advancement typically involves only about one needle.
    3. Advanced timing is occasionally used in the production of figured ripple double jersey fabrics.
    5. In specific applications, selected cylinder needles may rob yarn from all knitting dial needles.
    6. Advanced timing is utilized to achieve specific design effects, especially in fabrics like figured ripple double jersey, where precise control over loop tightness and yarn distribution is crucial to create intricate patterns or textures.
  • Rob yarn refers to the action of one set of needles taking or stealing yarn from another set of needles. This can occur in certain knitting techniques and timing settings, such as delayed timing or advanced timing.
    1. For example, in delayed timing, dial needles may “rob” or take some yarn from the cylinder needles as they create their loops. This action results in tighter dial loops compared to cylinder loops and can impact the overall fabric structure and characteristics.
    2. In advanced timing, the opposite may occur, where cylinder needles rob yarn from the dial needles, leading to tighter dial loops. The specific timing settings and techniques used will determine how much yarn is robbed and from which needles, influencing the final appearance and properties of the knitted fabric.
  • Half Feeder: Lycra is used in the alternative feeder with yarn. Example-If 42 feeders are present then there is needed 42 cotton yarn and 21 lycra yarn.
  • Full Feeder: Lycra is used in every feeder. Like as- 42 feeder need 42 lycra.

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