Output Explorer

Sidestream Smoke Chamber - An instrument has been received to monitor CO and CO, from
mainstream smoke in conjunction with the normal chamber sidestream operation. It was
designed to our specifications to measure CO, and CO in the 0-10% range.
The multigas calibration/zero-air system has been installed. The system design provides
required levels of ozone, carbon monoxide, non-methane hydrocarbons, sulfur dioxide, nitric
oxide and nitrogen dioxide to perform zero, span checks and multiport calibration of our
current Thermo Environmental instruments.
New Expansion Processes - Stress relaxation and recovery tests were carried out with bright
lamina to simulate expansion and collapse using the Dynastat instrument. The lamina were.
conditioned to 75% RH (16% OV) and then stretched by 50-100% using the "zero span"
technique. The strain was then maintained constant and the time dependence of the stress was
monitored. The stress relaxation rates were found to be very rapid with the stress falling to
33% of its initial value within one second. The relaxation rate did not appear to be a strong
function of the initial strain.
Tower exit expanded tobacco was reordered to OV values ranging from 5 to 35%. Both the
reordering rates and the final OV values varied during the process. The resulting SV values
were found to decrease in an approximately sigmoidal fashion as the final OV increased. The
steepest portion of the curve appears to be around 60% RH (11.5 to 12% OV). The results:
indicate the collapse is sensitive to both the reordering rate and the final OV value.
FILTER RESEARCH AND DEVELOPMENT
Concentric Filters - MEGA look-a-like test (concentric) and control (CA mono) models were
made with MFUL filler. The test delivered 8.8 mg of tar and the control 8.6. These models
were evaluated for subjective quality by Flavor Development. The only comments from the
panelists were that the control had slightly increased impact and was more peppery than the
test.
Samples of FTR-produced Mega cigarettes with CA mono and the current concentric filter
have been received. The cigarettes are currently being analytically tested.
Web Filter Development - Sample webs were produced at the University of Maine using 75%
1/8" cut CA staple and 25% softwood fiber. Various refining levels were evaluated and CMC
and PVA binders were used to improve elongation. Sample bobbins are currently being
evaluated for filter making machinability and cigarettes will be produced for analytical and
subjective evaluation.
2022156401
-2-
Source: https://www.industrydocuments.ucsf.edu/docs/hjxj0037

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