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Fabric Structure

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T
Tanvir Moin

Almost all fibres are some form of chemical polymer. Polymers are chemical molecules with repeating units of the structure.

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TANVIR SIDDIKE MOIN
Woven Knitted Non-woven
To create woven fabric, two or more sets of yarns are interlaced at right angles to each other. The warp yarns run the length of the fabric and the weft yarns run across the width of the fabric (left to right). Warp yarns are often stronger than weft yarns because they are wound onto the loom first and have tension applied.
Fabric Structure
 The design of the fabric and resulting properties depend on the order in which warp and weft yarns are interlaced (woven together).  The selvedge is the reinforced edge of the fabric that does not fray. The warp yarns run parallel to the selvedge.  The grain of the fabric is the direction in which the yarns run; the lengthwise grain is parallel to the selvedge.  The bias is the diagonal direction across the grain.
Fabric Structure
Fabric Structure
Step 1: Shedding  The warp yarns are first attached to the loom.  Shedding is the process of raising some of the warp yarns. This is done by the heddles on the loom. The space between the raised and lowered threads is called the shed.
Step 2: Picking  The process of inserting the weft yarns through the shed using a shuttle. The raised warp yarns are then lowered by the heddle and the previously lowered warp yarns are raised. This allows the weft yarns to become interlaced, forming a woven fabric.
Step 3: Beating up Is the process of pushing the weft yarns firmly together. This is done by the reed.
Step 4: Taking up and letting off To allow a length of fabric to be formed, the woven fabric must be wound onto the cloth beam and warp yarns must be gradually released from the warp beam.
The properties of woven fabrics are determined by the: Types and quality of fibre used Type, strength and degree of twist of the yarn used Type of weave used in fabric construction

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Fabric Structure

  • 3. To create woven fabric, two or more sets of yarns are interlaced at right angles to each other. The warp yarns run the length of the fabric and the weft yarns run across the width of the fabric (left to right). Warp yarns are often stronger than weft yarns because they are wound onto the loom first and have tension applied.
  • 5.  The design of the fabric and resulting properties depend on the order in which warp and weft yarns are interlaced (woven together).  The selvedge is the reinforced edge of the fabric that does not fray. The warp yarns run parallel to the selvedge.  The grain of the fabric is the direction in which the yarns run; the lengthwise grain is parallel to the selvedge.  The bias is the diagonal direction across the grain.
  • 8. Step 1: Shedding  The warp yarns are first attached to the loom.  Shedding is the process of raising some of the warp yarns. This is done by the heddles on the loom. The space between the raised and lowered threads is called the shed.
  • 9. Step 2: Picking  The process of inserting the weft yarns through the shed using a shuttle. The raised warp yarns are then lowered by the heddle and the previously lowered warp yarns are raised. This allows the weft yarns to become interlaced, forming a woven fabric.
  • 10. Step 3: Beating up Is the process of pushing the weft yarns firmly together. This is done by the reed.
  • 11. Step 4: Taking up and letting off To allow a length of fabric to be formed, the woven fabric must be wound onto the cloth beam and warp yarns must be gradually released from the warp beam.
  • 12. The properties of woven fabrics are determined by the: Types and quality of fibre used Type, strength and degree of twist of the yarn used Type of weave used in fabric construction