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MOULD THEORY

Introduction: The mould is an assembly of parts containing with in it an impression into which hot plasticized material is injected, and then maintained at certain temperature and pressure, then cooled to get a commercially acceptable shape. The impression may therefore as that part of the mould, which imparts shape to the moulding. There are different types of molding process depending on the requirement i) Injection molding ii) Compression & transfer molding iii) Extrusion iv) Blow molding v) Thermoforming vi) Vacuum forming vii) Calendaring In Tool & die making more emphasis is placed on injection molds as the design & fabrication of injection molds requires more skill & comprehension. Working principle: The impression of a mould is formed by two mould members, namely: The cavity portion of the mould, forms the external shape of the moulding The core portion of the mould, forms the internal form of the moulding https://www.facebook.com/injectionmoldingcompany
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