{HEAD ~ The operation} of {TAIL ~ an injection molding device} and the forming of sound carriers in molding cavities bounded by molding plates are known per se and consequently need not be discussed in more detail herein 
of
{ HEAD ~ The operation } of { TAIL ~ an injection molding device } and the forming of sound carriers in molding cavities bounded by molding plates are known per se and consequently need not be discussed in more detail herein
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