Rigid

Definition and Overview

Rigid is a term used for a processing or product condition, mainly in denim. In general, it refers to a state that has not been washed after indigo dyeing, or has been finished only minimally, and is characterized by a deep color and a firm feel.

Since it is not a material name or a weave structure name, it may also be used for materials other than cotton-based twill denim. However, in practice, it is often handled to mean rigid denim or raw denim.

Texture and Visual Characteristics

Because no softening or faded effect from washing has been added, it has body and firmness, and the surface is likely to appear dark and even. As it is worn and washed repeatedly, the color tone and texture change, especially in areas subject to friction.

Rigid denim dyed with indigo may release dye from the surface easily. Consider color transfer to clothing, bags, shoes, chairs, and so on, and take particular care when combining it with light-colored materials.

Main Applications

It is used for jeans, denim jackets, work jackets, skirts, overalls, and more. Depending on fabric thickness, density, and blend ratio, it is also suitable for fashion accessories such as bags and hats.

Seasonality changes depending on fabric weight and tailoring. A typical medium-weight to heavy rigid denim is suitable for autumn and winter or year-round bottoms, while lighter weights can also be used for spring and summer shirts and lightweight garments.

Selection and Handling Notes

When planning, allow for shrinkage and twisting after washing, and confirm the finished dimensions. Because the pattern dimensions and sewing specifications change depending on whether shrink-resistant finishing is applied, the fabric shrinkage rate, and whether product washing is performed, it is important to conduct trial sewing and washing tests in advance.

In sewing, adjust needle size, thread size, and stitch density to match the fabric thickness and firmness. Overlapped areas tend to become thick, so check whether the specification can prevent needle breakage, skipped stitches, and puckering at stepped sections.

When washing, it is common to wash separately or with dark-colored items and turn the item inside out to reduce friction. Whether home washing is allowed and the drying method vary depending on the blend ratio and processing conditions, so always follow the care label for each fabric or product.

• Check shrinkage separately in the warp direction and the weft direction.
• Assume color transfer and confirm rubbing fastness and washing fastness.
• Before mass production, confirm post-wash dimensions, skew, and seam condition using the actual fabric.

Differences from Similar Terms

Non-wash is used almost synonymously with rigid as a term meaning a state with no washing process. However, since it is not a unified definition covering the fabric finishing process or the scope of shrink-resistant treatment, the processing details should be stated specifically in specifications.

One-wash refers to a product or fabric that has been washed once. Compared with rigid, it has less firmness and starch-like feel, and shrinkage and excess dye loss have been confirmed to some extent in advance. Used processing and stone wash are processes intentionally added to create fading and puckering, and they differ from rigid.

Frequently Asked Questions