Now You Know Causes and Remedies of Sewing Problems

Causes and Remedies of Sewing Problems
Mayedul Islam
Merchandiser at Fashion Xpress Buying House.
Badda, Dhaka, Bangladesh.
Email: mayedul.islam66@gmail.com

Sewing Problems:
garments manufacturing. Lots of problems occur during sewing operation. In this article I will discuss on various causes of sewing problems and their remedies.

Sewing problems

Common Causes and Remedies of Sewing Problems:

A. Problems of stitch formation

i) Slipped stitch: Missing of interloping or interlacing between top and bottom threads.

Causes: 

• Looper or hook and needle are not properly placed.
• Irregular thread tension.
• Needle deflection.
• Needle threads loop size too small.

Remedies: 

• Proper placement of needle and looper or hook.
• Accurate tension maintaining.
• Needle can be changed.

ii) Staggered stitch: Stitch is not parallel produced by needle.

Causes: 

• Needle deflection.
• Due to wrong needle point.
• Defected motion of feed dog.
• Wrong adjustment of needle and thread size.

Remedies: 

• Increase needle size.
• Needle size and thread size to be altered.
• Motion of feed dog to be adjusted.

iii) Unbalance Stitch: Improper interlacement of threads especially in lock stitch machine.

Causes: 

• Wrong tension of sewing thread.
• Used wrong thread path.
• Snagging of needle with bobbing case.

Remedies: 

• Setting of proper tension to the sewing threads.
• Use of right thread path.
• Bobbin case to be smooth.

iv) Variable stitch density: Number of stitch per unit length is not equal.

Causes:

• Improper unwinding of thread from package during sewing.
• Twisting of needle thread in the bottom of thread package.
• Snarling of thread before tension disk.
• Use of broken check spring.
• Fraying of thread in the needle.

Remedies: 

• The position of thread guide must be 2.5 times higher than the position of thread package.
• Foam pad must be used to the bottom of thread package.
• Winding of more threads in the thread guide.
• Check spring need to be changed.
• Finer threads must be used or to be used heavy needle.

v) Frequent thread breakage: Thread breaking frequently during sewing.

Causes: 

• More tension to the bobbin threads or more rotating of bobbin.
• Wrong fitting of bobbin case.

Remedies: 

• Proper winding of threads on to the bobbin.
• The tension must be adjusted to the bobbin threads.
• Checking out the damaging case.

B. Problem of puckers:

Causes: 

• Variable or uneven stretch on fabric plies.
• Fabric dimensional instability.
• Extension of sewing thread.
• Sewing threads shrinkage.
• Fabric construction
• Mismatched patterns.

Remedies: 

• Proper feed mechanism should be used with equal ply stretch.
• Fabric shrinkage property must be almost equal.
• Using less tension to the thread.
• Fabric and sewing thread shrinkage% should be equal.
• By reducing stitch density for heavy fabric.
• Pattern should be matched properly.

C. Damage of fabrics on seam line: 
Fabrics or threads are damaged along the seam line during sewing.

Causes: 

• Mechanical damage. 
• Needle heating damage.

Remedies: 

• By using perfect size and shape of needle and needle point.
• By testing sew ability before sewing fabrics.
• By flowing cool air on the needle during sewing.
• By using lubricant to the needle and fabrics to the sewing line. 

 

Sumber http://textilelearner.blogspot.com

Share this post