Abstract:
A tow of synthetic filaments is cooled with an apparatus comprising a cooling element comprising first and second sections and means for contacting said tow with a cooling fluid in said second section, said first section having a surface extending a distance and positioned for receiving said tow and said second section having a surface extending a distance outwardly from said first section.
Abstract:
Hot gases are formed by establishing an electrical discharge in substantially uniform distribution throughout a zone, passing a gas through said zone in the absence of a flame and in contact with said discharge to increase the temperature of said gas, said electrical discharge being distributed substantially uniformly through said gas. High-temperature gases formed by said method are useful in the production of carbon black.