Knit Denim

Definition and Overview

Knit denim is a knitted fabric that incorporates the blue-toned coloring, uneven texture, and twill-like surface seen in denim as design elements. The material, knitting structure, and dyeing method are not fixed, and some versions use jersey or fleece as the base.

While ordinary denim is a woven fabric made by weaving warp and weft yarns, knit denim is a knit made by continuously forming loops. Therefore, even if the name includes denim, it is considered a knit in terms of structure and handling during sewing.

Texture and Function

Compared with woven denim, it is characterized by its easier stretch, softness, and ability to conform to the body. Depending on the thickness and knitting structure, it can maintain a casual denim-like appearance while offering a lighter wearing feel.

The appearance varies depending on indigo-style dyeing, heather effects, printing, and surface finishing. Stretch is not determined only by the inclusion of polyurethane; the knitting structure itself also provides stretch, so it is important to check stretch and recovery in each direction.

Main Applications

It is used for cut-and-sew items, shirts, outer layers, dresses, skirts, and pants. It is also suitable for kids' wear that takes advantage of easy movement, relaxed sets, and casual jackets.

Lightweight types are suited to spring and summer tops and shirts, while heavier types are suited to fall and winter pants, sweatshirt-like outer layers, and outerwear. However, warmth and breathability vary depending on thickness, blended fibers, and the structure of the back side.

Selection and Handling Notes

Depending on the application, check the industry weight, thickness, rebound, denim-like appearance on the surface, and sheerness. For pants and stressed areas such as the knees and elbows, verify how much the fabric returns after being stretched, and check through testing or sewing samples whether there is pilling from friction or color transfer.

Knit fabrics may stretch or the edges may curl during cutting and sewing. Align the grain and spread the fabric flat before cutting, and consider sewing specifications that accommodate differential feed and stretch. Use anti-stretch reinforcement as needed at shoulder seams, pocket openings, front edges, and similar areas.

The degree of shrinkage, twisting, fading, and color bleeding caused by washing differs by fabric. In particular, dark denim-style fabrics require handling based on the product's care label and test results, such as washing separately, washing inside out, and avoiding leaving the item wet for long periods.

• Check the shrinkage rate and twisting after washing before mass production.
• Let the fabric rest before cutting, and check for waviness or twisting.
• To prevent seam breakage and thread breakage, check how the fabric behaves when sewn with stretch.
• Check colorfastness to rubbing for dark colors, and be careful when combining with light-colored products.

Differences from Denim

Denim generally refers to a woven fabric made in twill weave. It has a firm texture and the stability characteristic of woven fabrics, and is distinguished by the twill lines formed by the crossing of warp and weft yarns. Knit denim is a knit with a denim-like appearance, and its structural classification is different.

Because knit denim stretches easily, it is easier to design for wearing comfort, but dimensional stability, sewing stretch, and changes after washing need to be checked more carefully than with woven denim. Do not choose it based only on a denim-like appearance; select it based on the required durability and silhouette.

Frequently Asked Questions