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Technology R & DThe total area of the test center is 3000M2, with more than 50 engineering and technical personnel, more than 60 sets of various experimental and testing instruments and equipment, physical and chemical rooms and physical properties rooms. The full set of performance of various rubber materials, various rubber materials and various products can be basically completed in this test center, which provides accurate data for the control of material quality and the testing of various product characteristics of our company, for our material selection, formula development, product performance improvement has played a major role.
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Standard rubber production process, from tapping to products, natural rubber import knowledge
Natural rubber has excellent physical and chemical properties, and after proper treatment, it also has oil resistance, acid resistance, alkali resistance, heat resistance, cold resistance, wear resistance and other characteristics, so it is widely used. Since the establishment of China's first rubber factory in 1915, China's rubber industry has a history of one hundred years. With the growing consumer demand for natural rubber in China, natural rubber is also positioned as an "important strategic material and industrial raw material".
Basic overview of natural rubber
Natural rubber (Natural Rubber) is a kind of natural polymer compound with rubber hydrocarbon (cis-1, 4-polyisoprene) as the main component, 91% ~ 94% of which is rubber hydrocarbon, and the rest is protein, fatty acid, ash, carbohydrate and other non-rubber substances.
From the point of view of the tariff, natural rubber under tax item 40.01 mainly includes natural rubber latex, tobacco film, technical classification natural rubber (TSNR), balata gum, gutta-po gum, guayule gum, sugar gum and similar natural gums. China's current imports of natural rubber mainly include natural rubber latex, tobacco film and technical classification of natural rubber.
natural latex
Natural rubber latex is mainly a liquid secreted from rubber trees, especially Brazil rubber trees. This liquid consists of rubber (I. e., high molecular weight polyisoprene) with a solid content of 30% to 40% of organic matter and minerals (proteins, fatty acids and their derivatives, salts, sugars and glucosides) dispersed in water to form an aqueous solution. The process flow includes: tapping, collecting, purifying, solidifying, creping, granulating, drying and packaging. The production process of standard glue, from tapping to product:
01 Towing
Latex is stored in the milk ducts of the bark phloem, and when the bark is cut open, milk-like latex will flow out continuously against the turgor of the milk ducts themselves and the thin cells around them. Tipping is usually around 4: 00 a.m. at this time, the temperature is relatively low, the water in the glue tree is full, the swelling and pressure effect of the cells is the largest in the day, and the glue is discharged smoothly, so the yield of tapping is high in the morning.
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