Nanchong Silk has a long history, and the rich silk culture has given Nanchong silk excellent quality. Its most prominent features are: silky color, uniform density, clear texture, soft and gorgeous. The spinning fabric feels fine; the crepe fabric is very elastic; the light fabric is like a flap, light and elegant; the heavy fabric has a strong hair feel and is quite full and full.

Product Features Nanchong Silk is one of the traditional silk weaving crafts of the Han nationality. It is named after it is produced in Nanchong City, Sichuan Province. Nanchong is located in the northeast of the Sichuan Basin and the middle reaches of the Jialing River. The terrain is dominated by hills. The climate is mild and the rainfall is abundant. It is suitable for planting mulberry and sericulture. It has a sericulture history of more than 3,000 years. It is known as the “Basang Humanities Resort, Qin Han Silk and Jinbang State”, 2005. In April, he was awarded the title of “China Silk Capital” by the China Silk Association. On March 13, 2012, the General Administration of Quality Supervision, Inspection and Quarantine approved the implementation of the protection of geographical indication products for Nanchong Silk. Sensory characteristics 1. Color silk: less 颣 、, good gloss consistency; fabric surface smooth, less scattering, uniform color, soft hand, good elasticity, plain fabric is not easy to wrinkle. 2, spinning: plain weave, warp and weft or weak sputum, the use of poetry silk or half-dyed technology, fine texture, silk surface flat, uniform gloss, smooth hand. 3, silk: plain or plain change structure, warp and weft woven points, smooth silk surface, well-balanced color. 4, satin: satin texture, clear lines, soft color, smooth and bright. 5, scorpion: plain or plain weave change structure, warp and weft respectively or at the same time strengthen the sputum, very flexible, the silk surface shows a clear and stable sputum effect. Advantages of Origin Nanchong is located in the northeast of the Sichuan Basin and in the middle reaches of the Jialing River. Ancient is the land of silkworms, Zhou belongs to Pakistan, Qin belongs to Ba County, Tang set to Guozhou, Pengzhou, Zhangzhou, Song set Shunqing House, Baoning House, and the Republic of China set up an administrative inspectorate. The terrain is dominated by hills and belongs to the subtropical monsoon humid climate zone. It is rich in light, heat and water resources. The soil has good natural fertility and has unique natural conditions for the development of silk production. Since ancient times, it has silk raw material resources, processing capacity and technical strength. The four traditional advantages of Mingte products are one of the four major sericulture production bases in the country and one of the fifteen major silk production and export bases, and enjoy high reputation at home and abroad. Product Honor Nanchong is one of the country's four major sericulture production bases and one of the fifteen major silk production and export bases. It is the largest silk industrial center in Sichuan, and the silk industry plays a pivotal role in the Nanchong area. As early as the Western Han Dynasty, Nanchong silk became a tribute, and silk silk was spread all over the city. In the Tang and Song Dynasties, silk fabrics were well-received in the capital and sold well in the Silk Road. The east of Fuzhou, Fuzhou, was collected by the Emperor of Japan as a national treasure. In 1915, Nanchong Silk won the gold medal at the Panama International Fair. In the 1940s, the world's largest silk reeling factory and the largest woven silk factory in southwestern China were all produced in Nanchong. Nanchong is also the region with the largest number of domestic sericulture bases. History of development Nanchong silk originated in ancient times. The earliest local chronicle "Huayang Guozhi" (Jin, Chang Yi) recorded the earliest history of Nanchong silk. "Huayang Guozhi" volume one "Ba Zhi" has such a record: "The princes of the princes will be in Huiji, and the singer will be the king of the country, and the squad will be smashed." 帛: Silk; Ba: Pakistan. It means: Daxie convened all the princes in the Kuaiji, including many princes including Pakistan and Laos, and brought jade and silk. According to "Critical Sources": "Pak, the name of the ancient country, located in the area of ​​Chongqing and the eastern part of Sichuan Province." The current Nanchong belongs to the country of Pakistan at that time. The city of Langzhong in the Nanchong area is the former capital of Pakistan. "Nanchong City" and "Nan Chong Silk" made a more detailed account of the development of Nanchong Silk. At the beginning of the week, Nanchong, Xichong, the south, and the middle of the sang, mulberry, silkworm, hemp, and scorpion have become tributes to the Zhou Dynasty. Nanchong silk culture has a long history and is well-known in China and abroad. During the Tang and Song Dynasties, Nanchong Silk Dongdu Fusang was regarded as a treasure collection by the Japanese royal family. There is a state red dragonfly now in the Japanese warehouse. In 1915, Nanchong Silk crossed the ocean and won the first prize at the Panama International Fair. Silk is the soul of Nanchong, silk culture is the root of Nanchong culture, Nanchong is loud because of silk, and is famous for its silk. Nanchong Silk Culture In recent years, Nanchong has vigorously promoted the mutual penetration and integration of silk culture, silk tourism and silk economy, and actively planned and built “One Road” (Sidu Avenue), “One Garden” (Silk Culture Park) and “One Square”. Silk culture facilities such as “The First Silk Mill”, “One Center” (茧 Silk Trading Center), “One Pavilion” (Silk Enterprise Boutique Exhibition Hall), and elaborately rehearsed a large-scale silk and dance drama. Jiashui Silk Rhyme not only highlights the long-standing silk culture of Nanchong City, but also enriches the connotation of “Chinese Silk Capital” and greatly enhances the popularity and reputation of Nanchong Silk.

Nanchong silk quality technical requirements (1) mulberry leaf production. 1. Mulberry varieties: Jialing No. 20, Tasang, Xiang 7920. 2. Sangyuan site conditions: the soil is reddish brown purple, dark purple loam, pH 6.5 to 8, organic matter content ≥ 1.5%. 3. Seedling: use asexual reproduction. 4. Mulberry planting: ≤15,000 plants per hectare. 5. Fertilization: Apply 20,000 tons of organic fertilizer per hectare per year. 6. Environmental and safety requirements: The use of pesticides, fertilizers, etc. must comply with relevant national regulations and must not pollute the environment. (2) Silkworm breeding. 1. Variety: 871×872, Jingsong × Haoyue, Dongting × Blue Wave. 2. Breeding time: 4 batches of three seasons in one year. Spring silkworms are from early May to early June, summer silkworms are in mid-June to mid-July, autumn silkworms are in mid-August to mid-September, and late autumn silkworms are in mid-September to mid-September. (3) Silk. 1. The process of raw silk production is: mixing → peeling → selection → steaming pre-infiltration → boiling → twisting → re-shaking → initial inspection → knitting; packaging → color matching → inspection into pieces. 2. The raw denier den is: 13/15 (14.43/16.65), 20/22 (22.20/24.42), 28/30 (31.08/33.30), 40/44 (44.40/48.84). 3. Number of raw silk glutinous grains: 13/15den 6 to 7 capsules, 20/22den 8 to 9 capsules, 28/30den 10 to 12 capsules, 40/44 den 17 to 19 capsules. 4. Raw silk fineness deviation, uniformity change, cleanliness and cleanliness, breaking strength, elongation at break, and cohesion index are better than above. (4) Weaving. It is strictly forbidden to use chemical additives with banned substances to impregnate. The impregnated raw silk is moderately dehydrated and dried. The moisture regain rate is controlled at: 9% to 11% weak, 11.5% to 13% strong; during the processing, ambient temperature To maintain between 22 ° C and 32 ° C, the relative humidity is 65% to 80%. The raw silk content of the silk white fabric is ≥90%, and the raw silk is all made from locally produced 13den to 44den raw materials. (5) Refinement. 1. Use soft water for the refining process. 2. The process flow is: determine bath ratio → blank silk pretreatment (pH 10.8 to 11.2, temperature 45 ° C to 60 ° C) → initial training (pH 9.5 to 10) → re-training (pH 9.5 to 10) → washing (75 ° C to 85 ° C) → water wash (60 ° C to 70 ° C) → water wash (40 ° C to 50 ° C) → weak acid treatment → water rolling → finishing (in a pile or reel) → practice white silk. (6) Color silk (dyed silk and printed silk). 1. Dyeing: The process flow is: color card proofing → pre-treatment of blank silk → selection of dyes → determination of process parameters → dyeing → washing → fixing → washing → rolling → drying. 2. Printing: The process flow is: color design → black and white draft → photosensitive plate making → color matching → modulation printing paste → printing → finishing. (7) Quality characteristics. 1. Sensory features: (1) Color silk: less 颣 、, good gloss consistency; fabric surface smooth, less scattering, uniform color, soft hand, good elasticity, plain fabric is not easy to wrinkle. 1 Spinning: plain weave, warp and weft, or weak weft, using raw silk or half-dyed technology, fine weaving, smooth silk surface, uniform gloss, smooth hand feeling; 2 silk: plain or plain weave, warp and weft Tight, smooth silk and well-balanced color. 3 satin: satin texture, clear lines, soft color, smooth and bright; 4 绉 class: plain or plain weave change structure, warp and weft respectively or at the same time strengthen the 捻, very elastic, the silk surface shows a clear and stable 绉 effect. 2. Physical and chemical indicators: the first-grade product width deviation of the project grade superior product ±1%±1.5% density deviation ±2.5%±3.5% mass deviation±2.5%±3.5% washing dimensional change rate spinning, silk fabrics practicing white warp direction 2.0%～-3.0%2.0%～-5.0% latitude 2.0%～-1.0%2.0%～-1.5% printing and dyeing direction 1.5%～-2.5%2.0%～-3.5% latitude 1.0%～-1.0%1.0 %～-1.0% 绉 fabrics whitening 2.0%～-5.0%2.0%～-8.0% latitude 1.5%～-3.0%1.5%～-4.5% printing and dyeing 2.0%～-3.0%2.0%～ -4.0% latitudinal 2.0%～-2.5%2.0%～-4.0% satin fabric whitening direction 1.5%～-3.0%2.0%～-4.5% latitude 2.0%～-2.0%2.0%～-2.0% Printing and dyeing direction 2.0% ~ -3.0%2.0% ~ -4.0% latitudinal 1.0% ~ -1.0% 1.0% ~ -1.5% color fastness grade washable water and perspiration resistant stain ≥ 4 ≥ 3 staining ≥ 3 ≥ 3 resistant Dry friction ≥4≥4 Moisture resistance ≥3≥3 Lightfast light color 3/Dark color 43 Appearance point, width 160cm and below ≤0.5 m≤0.8 m Width 160cm or more ≤0.6 m≤0.9 m3. 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 Nanchong Silk's production area may apply to the Nanchong City Quality and Technical Supervision Bureau of Sichuan Province for the use of the “Special Mark for Geographical Indication Products”, which shall be reviewed by the Sichuan Provincial Bureau of Quality and Technical Supervision and reported to the AQSIQ for approval. The legal inspection agency of Nanchong Silk is designated by the Sichuan Provincial Bureau of Quality and Technical Supervision.