Industrialization And Modernization To Bolster Asia Dewaxed Bleached Shellac Industry: Ken Research
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According to the study “Asia Dewaxed Bleached Shellac Industry Situation and Prospects Research report”, shellac is manufacture in various forms so that they can be used as food grade or pharmaceutical grade. In food industry, aqueous shellac solutions are prepared that can be formulated with oils or waxes and can be used in confectionary. Pharmaceutical grade shellac is used for glazes and gloss due to narrow specification and constant quality. It is used as a controlled release coating for nutritional supplements for tablets and soft and hard capsules. The major applications of dewaxed bleached shellac are in food, agriculture, confectionery, chewing gum, pharmaceutical, nutritional supplements, wood treatment, textiles, leather, printing, packaging, industrial, glazing agents, edible surface coatings, binding agents, varnish, polish, non-edible coatings, technical and other applications. The pharmaceutical industry uses dewaxed bleached shellac in the coating of capsules, pills and tablets, to protect internal ingredients. It is also used in cosmetics, food packaging, chocolate coatings, foils and laminated papers, ink, flexografics, hairlaquer, insulating varnishes, leather dressing, electrical, electronic and rubber compounds.
• Lac is the raw material form which shellac is derived and is a natural resin. It is the resinous secretion of a tiny scale insect known as kerria lacca. It is a parasitic on certain host trees existing in India. The resins are of different colours due to different insect strains and with varied chemical compositions. The selection of lac or seedlac is important to ensure uniformity and consistent quality of the final product. Bleaching process is performed to produce refined dewaxed bleached shellac. After bleaching process, the so obtained solution is later filtered to remove any insoluble material and wax. This solution is again bleached with sodium hypochlorite to remove any colour present. The so obtained shellac is then precipitated from the solution by adding dilute sulphuric acid, before being filtered, washed with water and dried. Dewaxed bleached shellac is colourless powder and contains very less quantities of wax which is soluble in alcohol and aqueous alkaline solutions.
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Few manufacturers use solely light coloured kushmi seedlac which requires only a moderate amount of bleaching that result in a relatively low acid value and less impact on the molecular structure of shellac. This process offers dewaxed bleached shellac with high and constant quality. This product when dissolved in an alcohol or an aqueous alkaline solution, appears clear, transparent and has good film forming properties, providing a high gloss coating with good surface adhesion. Dewaxed bleached shellac is stored in cold-storage godowns or in air conditioning rooms or in cool places to maintain its powder form. Asian dewaxed bleached shellac is categorised based on types such as dynamic method and static method. The leading players in dewaxed bleached shellac market in Asia are Hind Suter Shellac Pvt. Ltd., Aadhya International, AF Suter & Co Ltd, Kunming FrontSeeker Tech Co., Ltd., Tajna Shellac Pvt. Ltd., Vishnu Shellac, Paras International, Shri Gopal Shellac Industries and Jamnadas International. Geographically, bleached shellac market in Asia is spread across China, Japan, Korea, India, Saudi Arabia and other regions. The ever-increasing population, demand for various food products, evolution in pharmaceuticals and cosmetic sector coupled with steady growth in various industries will surely drive the growth of dewaxed bleached shellac industry in Asia.
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