Density

Definition and Overview

Density is an indicator of how tightly the thread and stitches that make up a textile are packed together. In woven fabrics, the number of warp threads and weft threads per unit length are generally counted and confirmed as the thread count.

In trading and production settings, these terms are sometimes used to describe density. However, the criteria vary depending on the material, structure, and applications, so the determination should be made not only based on numerical values ​​but also in conjunction with the specifications of the structure and thread.

• The number of threads in the warp direction is called the warp density, and the number of threads in the weft direction is called the weft density.
• One way to express density is by using the number of fibers per unit length.
• In knitting, the density of the fabric is sometimes expressed by the number of rows or columns of stitches.

Impact on texture and performance

Generally, densely textile tend to have a smooth surface and a tightly packed appearance, and may feel firm and resilient. However, the weave structure, thread thickness, twist, and finishing process also affect the texture, so density alone does not determine the feel.

Higher density can make woven fabrics less breathable and less sheerness, even thin ones. On the other hand, it can reduce breathability and drape, and make seam puckering more noticeable.

Main applications

Density is not a specific type of fabric, but rather a factor related to textile design. High-density fabrics are used in shirts, pants, jackets, outerwear, and bags when a fine surface texture and moderate wind resistance are desired.

textile with a relatively low density are often chosen for blouses, dresses, linings, and summer clothing due to their lightness, breathability, and softness. It is important to check the balance between the industry weight and thickness depending on the applications .

How to choose and precautions for handling

When choosing a textile, check the balance between warp and weft density, thread count, weave structure, and industry weight . Even with the same thread count, the thickness, stiffness, and surface texture will differ depending on whether the thread is thick or thin, and whether it is a plain weave or twill weave.

High-density textile may show needle holes, experience stitching slippage, or puckering. When working with thin or high-density materials, choose a needle and thread of appropriate thickness and check the stitch quality with a test stitch. Shrinkage from washing or processing may also alter the fabric's density.

• During the planning stage, we check not only the density but also the industry weight, textile width, and shrinkage rate.
• Before mass production, we test and confirm the cutability, sewability, and appearance after washing.
• For textile that are easily damaged, it may be necessary to adjust the needle and sewing machine settings.

Differences from similar terms

industry weight is an indicator of the mass per unit area of ​​textile. While density focuses on the number of thread or stitches, industry weight focuses on the total weight of the textile. Even if the density is high, using thin thread does not necessarily result in a high industry weight.

Yarn count is an indicator of thread thickness and is different from density. "Weave density," on the other hand, is a practical term used to refer to the density of a fabric, particularly the number of warp and weft threads.

FAQ

Are high-density textile always water-repellent?

High-density textile tend to be less permeable to water due to the small gaps between the thread, but this does not guarantee water repellency. Water-repellent properties depend on factors such as the type of fiber, thread specifications, surface treatment, and coating. If necessary, check for the presence and performance of water-repellent treatment.

Which should I prioritize checking: density or industry weight?

It depends on the desired product performance. When considering surface texture, sheerness, breathability, and sewability, check the density; when considering weight and thickness, check the industry weight. In practice, it is important to check both, including the thread thickness, weave, and finish.