Sweing problem and remedies

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Sweing problem and remedies

  1. 1. SEWINGPROBLEMS ANDREMEDIESBY:VANDANATRIPATHI
  2. 2. Problem: NEEDLE THREAD BREAKAGECAUSE REMEDY1. Excessive tension in needlethreadUse stronger thread or adjust tension2. Thread fraying at needle Use finer thread or coarser needle3. Thread trapped at thread guide Re guide the thread properly4. Thread trapping at the base ofconeReduce cone stand height to avoid vibration which cancause thread trapping5. Snarling before tension disc. Increase thread guides and reduce disc tension.6. Improper off winding from coneThe overhead guide should be directly above cone or thethread package. Also ensure that thread packageshouldn’t get tilted during off winding.7. Sharp edges on throat plate,hook point, needle guard, bobbinneedle groove or eyePolish rough edges, replace. Replace needle, use betterquality.8. Excessive needle heat, grooveor eye blocked with melted fabric.Change to better needle or throw compressed air to cooldown the needle.
  3. 3. Problem :SKIPPED STITCHESCAUSE REMEDY1. Failure of needle to enter loop atcorrect timeCheck needles is inserted and aligned correctly. Machineclearance and timings.2. Needle deflection or bent needle Replace the needle3. Thread loop failure due toincorrect needle size for thread sizeChange needle size in accordance with thread size.Kindly refer to recommended needle numbers againstspecified articles.4. Incorrect sewing tension in theneedleRe adjust the thread tension5. Thread loop failure due toincorrect setting of thread controlmechanismReset to standard and check loop formation through jogmechanism.6. Flagging of fabric due to poorpresser foot controlRe adjust presser foot pressure
  4. 4. Problem : BOBBIN THREAD BREAKAGECAUSE REMEDY1. Bobbin tension too light Adjust bobbin case tension by turning screw.2. Badly wound thread on bobbin Check bobbin winder alignment and adjust it properly.3. Bobbin case not fitted correctly Check size / type of bobbin check bobbin case4. Sharp edges on bobbin casePolish edges and contact surfaces. Change bobbincase if necessary.
  5. 5. Problems : UNBALANCED VARIABLESTITCHINGCAUSE REMEDY1. Improper thread tension Increase thread tension.2. Unbalanced threadcheck for snarling; opt for better qualitythread3 Variable tensions due to poor quality threadChange to better quality thread with consistentquality.4. Incorrect threading Re-guide the thread on machine.5. Poor fabric feed control Increase presser foot pressure6. Differential fabric feed Improve fabric feed mechanism.
  6. 6. Problem : STAGGERED STITCHINGCAUSE REMEDY1. Incorrect needle to thread size relationshipChange needle or thread size as appropriate.Kindly refer to recommended needle sizeagainst specified articles.2. Deflected or blunt needle point Change the needle.3. Needle vibrating or deflectingIncrease needle size or change to a reinforcedor tapered needle.4. Feed dog sway Tighten feed dog.5. Poor and variable control Reset presser foot.
  7. 7. SOMEOTHERPROBLEMS

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