The Effects of Cigarette Design on Delivery
Length: 18 pages
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Discusses (and provides equations for calculating) effects of paper permeability, filter ventilation, circumference, and puff position on delivery. Defines porosity (fraction of open space in a material), permeability (measure of the ability of a material to allow a fluid to pass through it), CORESTA permeability and conversion to Filtrona and Greiner permeability ratings. Describes relationship between cigarette parameters and ventilation, including pressure drop, tipping permeability, rod length and width, tipping paper vent area, circumference, cut width, and denier per filament. Graphs show effects of ventilation on puff count and tar/nicotine ratio. Ventilation reduces pressure drop and tar delivery, increases nicotine content of TPM, and reduces carbon monoxide delivery.
- Low-yield cigarettesModification of low yield products to assure that adequate levels of nicotine delivery are maintained, and effects of yield changes on toxicity and dependence.
- Nicotine transport, transfer, and uptakeDesign changes which alter nicotine delivery or effect how the product causes and maintains dependence, including transfer of nicotine from tobacco to smoke, and uptake into the body.
- Use of filters, paper, and ventilationModification of tobacco products through use of filters, paper, and ventilation, and measuring effects on dependence, behavior, and toxicity.
- Design changes over timeChanges in cigarette design over the past half century.
- Elasticity and Product Control
- Design Basics
- Design Component
- Filter draft (Filter RTD)
- Filter ventilation (Filter vents, air vents)
- Paper porosity (Natural permeability or NP)
- Perforated tipping paper
- Plug wrap (Plugwrap)
- Pressure drop (PD, Resistance to draw (RTD), Flow rate or Draft)
- Rod length
- Tipping paper
- Named Organization
- Coresta 1
- Filtrona 2
- Greiner 3
- Filters (Design)
- Paper (Design)
- Length (Design)
- Circumference (Design)
- Density (Design)
- Ventilation (Design)
- Pressure Drop (Design)
- Burn Rate (Design)
- T/N Ratios (Measures)
- Tar (Measures)
- Smoke Delivery/Transport (Measures)
- Puff Parameters (Measures)
- Puff Count (Measures)
- 1. Coresta Technology/Method
Paper porosity measure: cm/min cbar as measured on Ecusta's Phobos CORESTA instrument, using 100cm2 test area.
- 2. Filtrona Technology/Method
Paper porosity measure: deltaP1 mm H2O at 5cc/second flow rate using 10 cm2 test area.
- 3. Greiner Technology/Method
Paper porosity measure: seconds/50 cc.