Maintaining plasticizer temperature in tobacco filter rod formation, and apparatus therefor

摘要

The temperature of the plasticizer material which is applied to a tow band of filter material in a cigarette rod forming operation is maintained at substantially the ambient temperature of the environment in which the forming operation is being carried out thereby to provide substantially constant viscosity of the plasticizer, the temperature being maintained by circulating a cooling fluid through the plasticizer source to maintain it at a temperature of about 70 DEG F. to about 80 DEG F. Apparatus for maintaining the source temperature in the prescribed range also is disclosed.