Weaving

From warp preparation to loom tuning. Explains sheds, beat-up, take-up, and common faults. Includes reed and dent calculations, pick density planning, and productivity improvement with data. This section explains practical decision criteria, typical test methods, and failure modes that matter in real production. Readers get checklists, calculation steps, and case examples connecting specifications to cost, reliability, and compliance. Links map core concepts to upstream inputs and downstream processes so choices remain consistent across sourcing, manufacturing, and end-use performance. Each article includes definitions, diagrams where helpful, and plain-language notes to help newcomers ramp quickly while giving experienced professionals the depth needed to troubleshoot and optimize. Standards references are cited with context, and whenever trade-offs exist, we make them explicit so you can defend decisions.

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Warping Systems and Selvedges and it’s types

The arranging of yarn threads in long parallel lengths of equal tension, onto a beam in preparation for weaving.During the warping process cones of yarn are placed onto a rack called a creel. From this creel yarn passes through tension and spacing devices and through a leasing reed which separates the yarn threads and keeps them in the correct order before being wound onto a warping balloon.Selvedge means the edge of a fabric that is woven so that it will not ravel or fray.

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fabric weaving patterns

Classification of Fabric Weave Patterns

In the simplest weaving arrangement, alternate warp yarns are over or under the shuttle as it moves in one direction and the warp yarn positions are reversed for the return stroke of the shuttle. This weave can be made on a loom with only two harnesses. In other arrangements, several warp yarns may be moved upward or downward together, or several filling picks may take place before the warp yarns change position.

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fabrics

Textile Fabric Types – different types of fabrics and their patterns

Generally, a set number of yarns are used for the formation of fabrics. Also, a number of techniques are used for producing fabrics such as weaving, knitting, and felting. The type of fabrics varies by the fibers, the fabric formation techniques, machinery used for producing them, and finishing techniques. Fabrics can also be made differently based on the application.

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weaving

Weft and warp control of Weaving

The weft stop motion controls the correct insertion of the weft into the shed. Warp and weft stop motions will stop the loom most immediately when a warp end or a pick breaks off. It avoids the faults disturbing the fabric surface. It helps not degrading the fabric quality. The feeders are supplied together with various outfits and adjustment possibilities, which vary according to the yarn type and count and to the insertion system used.

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weft feeders

Weft feeders in Weaving

Weft feeders are feeding devices, which are also called weft storage feeders or weft accumulators, play an important role in the weaving machines where the weft is unwound overhead from the cone and is subjected to abrupt accelerations due to the drawing-off tension exerted by the insertion element. The balloon which is formed at each insertion can cause coil sliding and snarls, owing to the difficulty of braking adequately the yarn and to the high unwinding speed of the yarn from the cone.

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weaving machine

Weaving Equipments

Special equipments to improve efficiency and accuracy of weaving machines, reducing manual work are required. With a view to increase the efficiency and the flexibility of the weaving machines, the manufacturers have made considerable efforts to find solutions capable of simplifying and speeding up the operations and the machine settings at style changing and to permit coping better with particular production requirements.

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Drive and control of weaving machines

Drive and control of weaving machines

The latest weaving machines are equipped with microprocessor or PLC units which ensure continuously the control, the drive and the monitoring of the various machine members and of the various functions. One of the ways to increase production is to design and manufacture particular weaving machines which can offer very high weft insertion rates.

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