Method of forming filter elements

A method of forming a filter element is disclosed comprising introducing a mixture into a feeder, the mixture comprising a plurality of susceptor particles and a plurality of polymeric binder particles. The mixture is advanced through the feeder and into a die comprising an excitation portion where...

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Bibliographische Detailangaben
Hauptverfasser:	CHAMYVELUMANI SATISHKUMAR, WOOD THOMAS L, MEDVED ALEKSANDER, SOLOMON KEITH D, CZAUSZ EDWARD M
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A method of forming a filter element is disclosed comprising introducing a mixture into a feeder, the mixture comprising a plurality of susceptor particles and a plurality of polymeric binder particles. The mixture is advanced through the feeder and into a die comprising an excitation portion where eddy currents are induced in the susceptor particles by subjecting the mixture to a high-frequency electromagnetic field, the eddy currents being sufficient to elevate the temperature of the susceptor particles to cause adjacent polymeric binder particles to be heated to at least a softening point. The susceptor particles bind with the heated polymeric binder particles in the die to form a coherent mass. The coherent mass is advanced out of the die and cooled to form the filter element.