Low Ignition Propensity Cigarette Paper Coating Composition
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Solution Overview
Problem
The manufacturing process of cigarette paper faces challenges in workability and porosity reduction, which affects the combustion and oxygen inflow during smoking.
Innovation Solution
A coating composition comprising pregelatinized starch, maltodextrin, ethanol, and water, along with optional additives like resistant maltodextrin, inulin, oxidized pregelatinized starch, propylene glycol, and D-sorbitol, is applied to the cigarette paper to improve workability and reduce porosity, thereby controlling oxygen inflow and enhancing combustion characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a coating composition is applied to reduce cigarette paper porosity, then oxygen inflow is reduced and combustion is controlled, but manufacturing workability deteriorates
Solution Approach 1:
The patent applies parameter changes by carefully controlling the composition ratios of pregelatinized starch (5-20 wt%), maltodextrin (5-40 wt%), ethanol (10-40 wt%), and water (30-80 wt%) to achieve optimal balance between manufacturing workability and porosity reduction effect. The viscosity of the coating composition is also controlled within specific ranges to ensure proper application while achieving the desired porosity reduction.
Solution Approach 2:
The patent uses a composite coating composition combining multiple materials with different functions: pregelatinized starch provides film formation and porosity reduction, maltodextrin enhances coating stability and adhesion, ethanol acts as a solvent and drying agent, and water provides the aqueous base. This composite approach allows each component to contribute to different aspects of performance, resolving the contradiction between workability and porosity control.
2Reliability
If porosity is reduced to control oxygen inflow, then combustion strength is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary action by using pregelatinized starch that has already undergone gelatinization treatment before coating application. This pre-processing of the starch ensures proper film formation and porosity reduction without requiring complex in-situ processing equipment or additional manufacturing steps, thereby maintaining manufacturing simplicity while achieving reliable combustion control.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The coating composition enhances the manufacturing process workability, reduces cigarette paper porosity, and improves combustion strength by effectively reducing oxygen inflow, resulting in a low ignition propensity cigarette.
Implementation Method 1
A coating composition of a low ignition propensity cigarette paper, including: pregelatinized starch, maltodextrin, ethanol, and water
Implementation Method 2
the porosity of the coated band is low. Accordingly, when the combustion of a cigarette reaches a band portion, the amount of oxygen inflow to a cut tobacco leaf is reduced
Implementation Method 3
A coating composition comprising pregelatinized starch, maltodextrin, ethanol, and water
Implementation Method 4
the amount of oxygen inflow to a cut tobacco leaf is reduced and thus the cigarette may be extinguished
Data Source
Figure 1~3
AI summary
The coating composition of a low ignition propensity cigarette paper according to an exemplary embodiment includes pregelatinized starch, maltodextrin, resistant maltodextrin and ethanol.