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Abstract：
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The faceblank is an important functional assembly in the overall design of the facepiece,which puts other functional assemblies,such as eyepieces,breathing system,voice transmitter and nosecup etc.together as a whole, and is involved over ten technical properties.The structural features of the faceblank and the nosecup and their moulds for a respirator with one-piece facial visor were introduced.Designed according to the Chinese standard dummy head, the faceblank had a dually internal peripheral seal.The faceblank had the features of broad vision,high resistance to impact and scratch,geometric symmetry in the shape,compactness in the configuration,rationality in the arrangement of the functional assemblies.The general structural design of the moulds,the selection of the separating surfaces,the determination of the way of the fixer and the design of the mountings were discussed in detail.
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AuthorIntro：
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Reference：
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