RTB Sheet Manufacturing with Fine Tobacco Particles for Flavor Transfer
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Solution Overview
Problem
Heat-not-burn smoking products using reconstituted tobacco binder (RTB) sheets often result in an incomplete tobacco taste due to the evaporation of binders at low temperatures, leading to a lack of flavor intensity compared to traditional cigarettes.
Innovation Solution
A method for manufacturing RTB sheets with tobacco particles of 30 µm or less average size, combined with a binding agent and a liquid medium, is applied to the raw tobacco material layer, allowing for enhanced flavor molecule transfer and retention, using a conveyer belt and forming heads in a process that includes drying and optional fleece integration for improved structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If tobacco particles with small average size (≤30 μm) are used in the RTB sheet, then the surface area for flavor molecule transfer increases, but the manufacturing complexity and processing difficulty increase
Solution Approach 1:
The patent applies parameter changes by specifying a precise particle size range (≤30 μm) for tobacco particles to optimize the surface area for flavor molecule transfer. This parameter optimization enables effective flavor release while maintaining compatibility with standard manufacturing processes, resolving the contradiction between improved flavor transfer and manufacturing complexity
Solution Approach 2:
The patent applies preliminary action by pre-processing tobacco material into particles of the specified size range before incorporating them into the RTB sheet formulation. This pre-prepared tobacco particle material can be directly used in conventional RTB manufacturing equipment, avoiding the need for specialized processing equipment while ensuring optimal flavor transfer characteristics
2Quantity of substance
If tobacco particles are ground to smaller size to enhance flavor, then flavor molecule migration improves, but flavoring molecules may decompose due to high shear energy
Solution Approach 1:
The patent applies partial action by grinding tobacco particles to a specific size range (≤30 μm) rather than extremely fine sizes. This partial grinding achieves sufficient surface area for flavor molecule transfer while avoiding the excessive shear energy that would decompose flavoring molecules, thus optimizing the balance between flavor release and molecule preservation
Solution Approach 2:
The patent maintains continuity of useful action by implementing a controlled grinding process that continuously produces particles within the optimal size range without subjecting the material to repeated harsh processing cycles. This continuous gentle processing preserves flavoring molecules while achieving the desired particle size for effective flavor transfer
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 method enhances the tobacco flavor experience by ensuring the migration of flavor molecules to the aerosol stream, maintaining nicotine and flavor integrity, and allowing for adjustable tobacco taste enhancement through varying particle sizes and application methods.
Implementation Method 1
The particle size allows migration of bigger and smaller molecules from an internal volume of the particles to their surface from which these molecules could pass over to the aerosol stream
Implementation Method 2
When heated up to 250°C, the binder evaporates, and the resulting vapor is inhaled by consumer
Implementation Method 3
the binding agent is subsequently applied on the raw tobacco material layer and then dried in a drying process
Data Source
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AI summary
The invention relates to a method for manufacturing a reconstituted tobacco binder (RTB) sheet, comprising a raw tobacco material and a binding agent. The raw tobacco material is positioned on a conveyer belt, which moves in a forward direction. The raw tobacco material is formed by at least one forming head to a raw tobacco material layer, wherein the binding agent is subsequently applied on the raw tobacco material layer and then dried in a drying process, thereby creating the RTB sheet. The method for manufacturing a RTB sheet is characterized in that a tobacco product comprising tobacco particles and a liquid medium is applied on the raw tobacco material layer and/or the RTB sheet during the manufacturing, wherein the tobacco particles are having an average particle size of 30 μm or less.