dyeing2026年7月15日

Nagaita Chugata

Nagaita Chugata (長板中形) is a traditional Tokyo technique for dyeing cotton yukata fabric with indigo. Its name describes two defining features: a long board (nagaita) used to support the cloth during paste application, and medium-scale stencil patterns (chugata) between large daimon and small komon designs.

The technique's most demanding feature is double-sided resist work. The artisan stencils the pattern onto both faces of the cloth and aligns them so precisely that the indigo-dyed design reads clearly from either side.

History in Edo and Tokyo

Nagaita Chugata developed from Edo-period stencil-dyeing traditions used for yukata. Cotton bathing garments became everyday summer wear among townspeople, creating demand for patterned indigo cloth that was attractive, washable, and practical.

From the late Meiji period, faster dyeing methods and synthetic dyes reduced demand for labor-intensive Edo Chugata. Preservation efforts in the twentieth century protected the long-board, double-sided technique. Museum collections in Tokyo retain stencils, dyed samples, and materials associated with important artisans, allowing the process and its patterns to be studied.

Materials and tools

Cotton cloth: plain weave, crepe, or figured cotton suitable for yukata.
Long board: traditionally a single fir board about 6.5 meters long and roughly 45 centimeters wide.
Ise Katagami stencil: patterned paper cut for repeated paste application.
Resist paste: applied through the stencil to protect selected areas from indigo.
Soy liquid: used in preparation to help control dyeing and cloth behavior.
Indigo vat: the cloth is immersed repeatedly to build color.
Alignment marks and spatulas: support exact repetition across the full bolt and on both sides.

Production process

Board preparation: the long board is prepared and moistened so the cloth can be attached smoothly.
Cloth mounting: approximately half of a kimono bolt is stretched on the board without distortion.
First-side stenciling: the artisan positions the stencil and spreads resist paste with a spatula, repeating the pattern along the length.
Reverse alignment: after drying, the cloth is turned over and the same design is pasted from the back. The front and back must overlap accurately.
Soy preparation: the cloth receives a preparatory treatment before dyeing.
Indigo dyeing: it is lowered into the vat and exposed to air repeatedly. Oxidation develops the blue color.
Washing: resist paste is removed thoroughly in water.
Drying and inspection: the artisan checks color, repeats, pattern alignment, and unintended dye penetration.

If the two paste layers do not match, indigo can enter from one face and blur the design. Precision across a roughly twelve-meter bolt is therefore central to the craft.

Nagaita Chugata versus chusen

Both techniques can produce yukata patterns visible on both sides, but their processes differ. Nagaita Chugata stretches cloth on a long board and applies resist separately to the front and back before immersion in indigo. Chusen folds cloth in layers, applies paste between folds, and pours dye through the stack. Neither should be marketed as the other.

How to identify Nagaita Chugata

Two-sided pattern: the design is dyed through and carefully aligned on both faces.
Indigo character: color may show the depth and controlled variation of repeated vat dyeing.
Stencil repeats: joins should be skillfully registered across the bolt.
White resist areas: fine motifs remain clear where paste protected the cotton.
Documentation: ask for the artisan, workshop, technique, fiber, dye, and production region.

A reversible-looking print is not proof of Nagaita Chugata. Digital printing, roller printing, and chusen can create different but superficially similar effects.

Buying and care

For an unsewn bolt, confirm length, width, shrinkage preparation, visible flaws, and whether tailoring is included. For a finished yukata, inspect motif placement at seams and confirm that the cloth has been prepared appropriately.

Indigo may transfer when new. Follow the artisan's instructions, wash separately in cool water if washing is permitted, avoid bleach and long soaking, and dry in shade. Store clean and dry away from light. Valuable or historic work should be handled by a textile specialist.

Frequently asked questions

Why is the board so long?

It holds approximately half a kimono bolt flat so the stencil can be repeated accurately along the cloth.

Is the pattern printed?

No. Resist paste blocks the indigo during immersion dyeing. The visible pattern is created by dyed and protected areas of the cotton.

Can both sides be worn?

The careful double-sided process makes the design legible from both faces, an important quality of yukata cloth, although garment construction still determines the intended outside.