The real situation of folk blue printed cotton cloth is

The statement about folk blue printed cloth is correct: it belongs to the dye-proof printing process, which was called "gray valerian" in ancient times; Also known as indigo calico, commonly known as medicinal patch and watering cloth; Blue printed cloth has a wide range of use value and is applied in all parts of the country.

Blue calico is a handicraft of Han nationality, also called indigo calico, commonly known as medicinal patch, blue calico and so on. It is a traditional printing and dyeing product in China with a history of 1300 years. The main producing areas include Nantong City, Jiangsu Province, Tongxiang City, Zhejiang Province, Shaoyang City, Hunan Province and Lanling County, Shandong Province.

At first, blue grass was used as dye for printing and dyeing. Blue calico is baked with synthetic mortar made of lime and soybean powder, and made of cotton, hand-woven, carved and scraped.

Overview:

Blue printed cotton cloth in a broad sense:

Including tie dyeing, batik dyeing, pad dyeing and natural dyeing. Traditional tie dyeing, batik dyeing, pad dyeing and natural dyeing mostly use indigo as dye. Although the anti-dyeing methods are different, the finished products are all blue and white calico, so they can be collectively called blue calico. The same point is that the material is cloth (or hand-woven fabric) and the dye is plant indigo, and the production process is manual operation.

Blue printed cotton cloth in a narrow sense:

For a long time, people used to call the gray-dyed blue-and-white cloth with bluegrass as the dye, soybean powder and lime powder as the slurry, carved paper as the plate, and filter pulp leakage as the blue printed cloth as the blue printed cloth.