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Principle and objectives
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Method
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‘Compounding' or formulation
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Stabilizing the latex --
Strengthening resistance and water-tightness
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Fresh latex is mixed with chemicals - vulcanization accelerators, antioxidants (to prevent degradation)
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Moulding(Coagulation and soaking)
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1. Purifying the surface of the porcelain before applying latex
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Cleaning with acid and/or alkaline solutions
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2 .Coating the surface with coagulant, then drying
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Calcium nitrate + calcium carbonate + wetting agent
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3. Moulding proper
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Soaking in a latex bath
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Pre-vulcanization rinsing (on damp latex)
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Eliminating the previously used additives such as accelerators and proteins
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Washing with water followed by mild drying. The result depends on temperature, duration and water flow
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Vulcanization
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Cis-polyisoprene chain cross-linking using vulcanizing agents to enhance the qualities of the glove
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Exposure in ovens heated to increasing temperatures
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Post-vulcanization rinsing (on dry latex)
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Eliminating the extractible proteins rendered accessible by oven drying
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The same as pre-vulcanization rinsing but on a dry film.The result depends on the duration and temperature
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Mould release
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Releasing from moulds
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