Shikon Dyeing
Shikon dyeing is a plant dyeing method that uses shikon, the root of the gromwell plant, as the dye, and expresses hues ranging from reddish purple to deep purple through mordanting and repeated dyeing.
Contents6 sections
Definition and Overview
Shikon dyeing is a dyeing method that uses pigment obtained from the root of the gromwell plant. Because it can refer either to shikon itself or to dyeing with that dye, specifying the process as “shikon dyeing” in purchase orders and specifications helps prevent misunderstandings.
It is not a term that indicates whether the item is woven fabric or knit, or what type of material it is; it is the name of a dyeing method and dye. Even with shikon dyeing, the hue, depth, and colorfastness vary depending on the fiber type, pretreatment, mordant, and number of dyeing cycles.
Color Tone and Texture Characteristics
In general, this dyeing tends to produce calm, complex color tones ranging from purple with a reddish cast to deep purple with a bluish cast. Unlike the uniform colors of chemical dyes, slight differences in depth and shade caused by the fiber and dyeing conditions may be used as part of the expression.
Texture is not determined by the dyeing name alone. The material of the base fabric, weave or knit structure, and the effects of scouring and finishing all have a major impact, so it is important not to judge softness, moisture absorption, or warmth solely from the fact that it is shikon dyeing.
Main Applications
Using the purple tone and the natural expression of plant-based dye, it is used for kimono and obi as well as shirts, blouses, dresses, scarves, and fashion accessories. Depending on the material and fabric thickness, it can be developed for spring/summer through autumn/winter use.
When a deep tone is desired, it may be paired with a design that minimizes decoration or with fabric that has the texture of natural fibers. On the other hand, the lightfastness and resistance to abrasion required for the intended use should be checked individually according to the final product’s actual usage conditions.
Selection and Handling Precautions
During planning, confirm the hue and lot-to-lot variation with physical samples before mass production, and set the required colorfastness tests for the application, such as washing, perspiration, rubbing, and lightfastness. In particular, products with frequent contact, such as combinations with light colors, linings, and bags, also require confirmation of color transfer when wet.
Shrinkage and stretching are not properties unique to shikon dyeing; they are mainly affected by the fiber, fabric design, and pre- and post-processing. Before cutting, relax the fabric roll, perform wetting if necessary, and after confirming the shrinkage rate, reflect it in the pattern and cutting length.
For sewing, make prototypes by combining sewing thread, interfacing, tape, and other materials with the main fabric, and check for color differences and fading around the seams. High-temperature ironing and strong friction can cause color changes, so use a pressing cloth and follow the care label and handling conditions provided by the fabric supplier.
- Agree on the acceptable range for depth and hue using samples.
- Confirm colorfastness to washing, rubbing, perspiration, and light according to the application.
- Evaluate color transfer at contact areas with white or light-colored accessories.
- Confirm the shrinkage rate and standardize the conditions for pre-cutting and pre-sewing treatment.
Differences from Similar Terms
Plant dyeing is a general term for dyeing that uses plant-based and other natural dyes, and shikon dyeing is one type of it. Even when labeled as plant dyeing, the plant used, color tone, mordant conditions, and handling characteristics are not the same.
Madder dyeing and safflower dyeing are also plant-based dyeing methods, but the dye plants used and the color tones that can be obtained are different. Also, while shikon is used as the name of the dye itself, shikon dyeing usually means dyeing performed with that dye.
Frequently Asked Questions
Can shikon dyeing be washed at home?
Whether it can be washed depends on the fabric material, dyeing conditions, and sewing specifications, so the care label takes priority. In general, to avoid color fading and color transfer, it is important to wash it alone for a short time at first and avoid strong friction, long soaking, and drying in direct sunlight.
How can color transfer be prevented with shikon dyeing?
Whether it can be completely prevented depends on the dyeing conditions and the usage environment. Before mass production, confirm colorfastness to wet rubbing, washing, perspiration, and so on, and conduct contact tests with light-colored linings and accessories. For the product, provide care instructions that follow the care label.
Does shikon-dyed fabric need to be wetted before sewing?
It is not always necessary, but for fabrics containing natural fibers and for products that will be washed, it is effective for confirming shrinkage and color changes in advance. Test under the same conditions as mass production, and clearly state in the process instructions whether the fabric roll is relaxed and whether wetting is performed.
