How does the stitch density affect the shrinkage behavior of single and double jersey knit fabrics?

1 Single jersey knit fabric

Single jersey is a type of weft knit fabric that has a smooth surface on the right side and a looped back on the wrong side. It is flexible, soft, and breathable, but it also tends to curl at the edges and shrink more than other knit fabrics. The stitch density of single jersey affects the shrinkage behavior in two ways: first, it determines the degree of loop formation and the amount of yarn used in the fabric; second, it influences the fabric's dimensional stability and elasticity.

A higher stitch density means that the loops are smaller and tighter, and more yarn is used to form the fabric. This results in a thicker, heavier, and more compact fabric that has less tendency to curl at the edges, but also more potential to shrink when exposed to moisture or heat. A lower stitch density means that the loops are larger and looser, and less yarn is used to form the fabric. This results in a thinner, lighter, and more open fabric that has more tendency to curl at the edges, but also less potential to shrink when exposed to moisture or heat.

To control the shrinkage of single jersey knit fabric, you can adjust the stitch density according to the desired fabric properties and the end use of the garment. You can also use pre-shrunk yarns, apply finishing treatments, or follow proper washing and drying instructions.

2 Double jersey knit fabric

Double jersey is a type of weft knit fabric that has a smooth surface on both sides and no loops on the back. It is formed by two sets of needles that knit two layers of fabric together. It is sturdier, firmer, and more resistant to curling and stretching than single jersey, but it also shrinks more than other knit fabrics. The stitch density of double jersey affects the shrinkage behavior in a similar way as single jersey, but with some differences.

A higher stitch density means that the two layers of fabric are more closely knit together, and more yarn is used to form the fabric. This results in a denser, heavier, and more stable fabric that has less tendency to distort or pucker, but also more potential to shrink when exposed to moisture or heat. A lower stitch density means that the two layers of fabric are more loosely knit together, and less yarn is used to form the fabric. This results in a lighter, softer, and more flexible fabric that has more tendency to distort or pucker, but also less potential to shrink when exposed to moisture or heat.

To control the shrinkage of double jersey knit fabric, you can adjust the stitch density according to the desired fabric properties and the end use of the garment. You can also use pre-shrunk yarns, apply finishing treatments, or follow proper washing and drying instructions.

3 Here’s what else to consider

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