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