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The tree is cut during the winter and cut into pieces. These pieces are placed in a steamer and the bark is peeled. It is washed with water and then mixed with lime for 10 or 20 days. When the bark is half softened, it was beaten with a foot hammer or a water wheel grinder. The beating is repeated 3 or 4 times to get the right consistency and the pulp can be used to form the sheets.

Qimin yaoshu treaty or “Main techniques for the welfare of the people”  by Jia sixie (535 AD) and Tiangong Kaiwu or “Creations of nature and work of man”  by Song Yingxing (1637) describe the preparation process.

The leaves are picked at dawn when they are still fresh. They are already crushed to a paste. This paste is pressed in a bag and rinsed to remove the yellow dye; the operation is very long. (The yellow dye can be stored as a basis for other dyes)

Flowers free of  yellow dye are mixed with potash; the mixture is placed on a filter and washed down with water. The filtrate is then mixed with a weak acid (lemon juice, pomegranate juice) to precipitate the coloring material.

The red dye does not require the use of a mordant.

Qimin yaoshu treaty or “Main techniques for the welfare of the people”  by Jia sixie (535 AD) and Tiangong Kaiwu or “Creations of nature and work of man”  by Song Yingxing (1637) describe the preparation process.

The leaves are picked at dawn when they are still fresh. They are already crushed to a paste. This paste is pressed in a bag and rinsed to remove the yellow dye; the operation is very long. (The yellow dye can be stored as a basis for other dyes)

Flowers free of  yellow dye are mixed with potash; the mixture is placed on a filter and washed down with water. The filtrate is then mixed with a weak acid (lemon juice, pomegranate juice) to precipitate the coloring material.

The red dye does not require the use of a mordant.

Qimin yaoshu treaty or “Main techniques for the welfare of the people”  by Jia sixie (535 AD) and Tiangong Kaiwu or “Creations of nature and work of man”  by Song Yingxing (1637) describe the preparation process.

The leaves are picked at dawn when they are still fresh. They are already crushed to a paste. This paste is pressed in a bag and rinsed to remove the yellow dye; the operation is very long. (The yellow dye can be stored as a basis for other dyes)

Flowers free of  yellow dye are mixed with potash; the mixture is placed on a filter and washed down with water. The filtrate is then mixed with a weak acid (lemon juice, pomegranate juice) to precipitate the coloring material.

The red dye does not require the use of a mordant.

Qimin yaoshu treaty or “Main techniques for the welfare of the people”  by Jia sixie (535 AD) and Tiangong Kaiwu or “Creations of nature and work of man”  by Song Yingxing (1637) describe the preparation process.

The leaves are picked at dawn when they are still fresh. They are already crushed to a paste. This paste is pressed in a bag and rinsed to remove the yellow dye; the operation is very long. (The yellow dye can be stored as a basis for other dyes)

Flowers free of  yellow dye are mixed with potash; the mixture is placed on a filter and washed down with water. The filtrate is then mixed with a weak acid (lemon juice, pomegranate juice) to precipitate the coloring material.

The red dye does not require the use of a mordant.

Brown-skin of the roots must be scraped by hand before cooking. Then they are cooked in alkaline lye for half an hour. Beating is performed in a stone mortar with a heavy wooden mallet, for half an hour, two people working together. Then the pulp is dispersed in a bucket of water.
The mould consists of a wooden frame with a stretched fabric. It floats on the surface of the tank filled with water. The pulp is poured into the mould and is distributed evenly by hands. The mould is lifted horizontally to avoid casting the pulp to flow. Then it is left to air dry overnight. The sheet is then detached from the mould.

The tree is cut during the winter and cut into pieces. These pieces are placed in a steamer and the bark is peeled. It is washed with water and then mixed with lime for 10 or 20 days. When the bark is half softened, it was beaten with a foot hammer or a water wheel grinder. The beating is repeated 3 or 4 times to get the right consistency and the pulp can be used to form the sheets.

The tree is cut during the winter and cut into pieces. These pieces are placed in a steamer and the bark is peeled. It is washed with water and then mixed with lime for 10 or 20 days. When the bark is half softened, it was beaten with a foot hammer or a water wheel grinder. The beating is repeated 3 or 4 times to get the right consistency and the pulp can be used to form the sheets.

Brown-skin of the roots must be scraped by hand before cooking. Then they are cooked in alkaline lye for half an hour. Beating is performed in a stone mortar with a heavy wooden mallet, for half an hour, two people working together. Then the pulp is dispersed in a bucket of water.
The mould consists of a wooden frame with a stretched fabric. It floats on the surface of the tank filled with water. The pulp is poured into the mould and is distributed evenly by hands. The mould is lifted horizontally to avoid casting the pulp to flow. Then it is left to air dry overnight. The sheet is then detached from the mould.