Coats Industrial


Seam puckering can be caused by many factors. These can contribute individually or in combination. The most significant are:

The fabric density, weight and elongation properties the seam type, needles, machine condition, machine settings, the stitch type, the operator and the sewing thread.

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  • Chapter 1

    Understanding seam puckering

    We outline the factors that can cause to seam puckering problems and highlight the most common.

  • Chapter 2

    Assessing the causes

    Before a solution can be developed to resolve a seam puckering problem it is important to understand the cause. In this chapter, we show you how to work out which factor or combination of factors could be causing your seam puckering.

  • Chapter 3

    Most common causes

    We look at the most common causes in more detail, explaining why some types of fabric can be more prone to seam puckering. 

  • Chapter 4

    Seam type

    How you can use top stitching, seam bias and alter stitch density to reduce seam puckering.

  • Chapter 5


    The selection of the needle size as well as its point style can influence the level of seam puckering.

  • Chapter 6


    How to ensure you have the correct hook timing on a lockstitch machine.

  • Chapter 7

    Feed systems

    Examples of different fabric feeding mechanisms in action.

  • Chapter 8

    Machine maintenance and settings

    We examine how wear and tear around critical areas the sewing machine causes a range of problems including seam puckering.

  • Chapter 9

    The operator

    The sewing machine operator can make a difference to seam pucker through simple routines and knowledge of the correct settings and usage.

  • Chapter 10

    Sewing threads

    Sewing thread type, size and application conditions can have a significant impact on the performance of a seam, including seam puckering.