Nantong blue printed cloth is handmade and has the characteristics of broken knife. The product has ice cracks naturally formed during the dyeing process; the color flowers are relatively complete, the pattern is natural, beautiful and the distribution is reasonable; slight color difference is allowed, no obvious color matching , concentrated small color points and the exposed bottom that affects the appearance.

Nantong blue printed cloth quality technical requirements First, raw materials 1. Grey cloth: White cotton fabric with flat cloth, white color and tight texture, cut into 12.5m per section. 2. You can do it. Second, the process 1. Process: degreasing → crepe paper → engraved version → upper tung oil → scraping anti-staining → dyeing → drying → finishing. 2. Dried after the pulp. (2) crepe paper: It is made of 3 to 5 layers of paper. The paper used is 2 to 3 layers of Guiyang paper or mulberry paper, 1 to 2 layers of Korean paper, and 1 layer of ordinary white paper. 1 engraved version: divided into blue and white flowers and white blue flowers. The engraving method includes a blue-and-white-white engraving method, a white-and-blue-and-white-and-white engraving method, and a blue-and-white combination engraving method. 2 Tung oil: Smooth the back surface of the engraved flower plate with smooth pebbles and brush the tung oil repeatedly. For the first time, the oil is small and thin, and then brushed after drying. The brush is repeatedly brushed 2 times to 3 times on the front and back sides. (3) Scratch and anti-staining slurry: When the water is evenly sprinkled on the grey cloth to semi-dry and semi-wet, the cloth is wound up and then squeegeed. The anti-staining slurry is made of soy flour and added with lime powder (the ratio of soy flour and lime powder is 1:0.7 in summer and 1:1 in winter), and the mixed raw materials are continuously stirred until the viscosity is moderate. The fine pattern can be used as anti-staining paste after steaming the glutinous rice flour. (4) Scraping and drying: The dyed cloth is picked out and placed on the dyeing tank to be drained and then aired outside. After drying, immerse in 3% to 5% acetic acid in acid water for 30 minutes to 35 minutes to fix the color, take out the drain and wash 3 times and then dry. After the loose mortar is piled up, the mortar is scraped off, dried and rolled to be flat and stored. Third, the quality characteristics Sensory features: blue printed cloth is handmade, the pattern has broken knife characteristics, the product has ice cracks naturally formed during the dyeing process; the color flowers are relatively complete, the pattern is natural, beautiful, and the distribution is reasonable; slight color difference is allowed, no obvious Color, concentrated small color points and the bottom that affects the appearance. 2. 3. Safety and other quality technical requirements: Product safety and other quality technical requirements must comply with relevant national regulations.

Apply to：
Producers within the scope of the production of Nantong blue printed fabrics may submit an application to the Quality and Technical Supervision Bureau of Nantong City, Jiangsu Province for the use of the “Special Mark for Geographical Indication Products”, which shall be reviewed by the Jiangsu Provincial Bureau of Quality and Technical Supervision and announced to the General Administration of Quality Supervision, Inspection and Quarantine for approval. . The inspection mechanism of Nantong Blue Printed Fabric is selected by the Jiangsu Provincial Bureau of Quality and Technical Supervision in the inspection institutions that meet the qualification requirements.