Segmented Aerosol-Generating Substrate Rod for High-Porosity Smoke Release
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Solution Overview
Problem
Existing methods for producing aerosol generating substrate rods in heated cigarettes face issues such as low production efficiency, high defect rates, and poor aerosol release due to excessive adhesive use, leading to low porosity and uneven bonding of tobacco particles.
Innovation Solution
Aerosol generating substrate rods are prepared using a spray gluing method that applies adhesive only to the tops of tobacco particles, ensuring partial gluing without adhesive on sides or bottoms, combined with intermittent spraying and dropping to form short rod sections at ends and scattered sections in the middle, enhancing porosity and axial ventilation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a large amount of adhesive is added during stirring and mixing to bind loose smoke producing particles, then the bonding strength of tobacco particles is improved, but the porosity and axial permeability of the aerosol generating substrate rod deteriorate due to cooled adhesive filling gaps between particles
Solution Approach 1:
The patent applies adhesive locally only at the ends of the aerosol generating substrate rod rather than uniformly throughout. The ends are coated with adhesive and then rolled in tobacco particles, creating a localized bonding zone. This ensures particles at the ends are firmly bonded while maintaining porosity in the central region where no adhesive is present, thus resolving the contradiction between bonding strength and porosity.
2Quantity of substance
If a small amount of adhesive is added during stirring and mixing to avoid filling gaps, then the porosity is maintained, but the adhesive disperses unevenly and fails to bond tobacco particles effectively
Solution Approach 1:
The patent applies adhesive to the ends of the substrate rod before adding tobacco particles. This preliminary action ensures the adhesive is in place and can effectively bond particles when they are added and pressed. The adhesive is applied in advance at specific locations rather than being mixed with particles, ensuring both adequate bonding and maintained porosity.
3Stability of the object's composition
If adhesive is applied to bond scattered tobacco particles, then the structural integrity is improved, but aerosol release deteriorates due to adhesive coating on particle surfaces
Solution Approach 1:
The patent applies adhesive only at the ends of the substrate rod where structural integrity is needed for handling and assembly. The central region containing the bulk of tobacco particles remains free of adhesive, allowing optimal aerosol release. This localized application strategy satisfies both structural requirements and aerosol generation performance.
4Stability of the object's composition
If loose smoke producing particles are loaded into an outer tube with sealing paper and plugging parts, then the particles are fixed and prevented from scattering, but production efficiency decreases and defect rate increases
Solution Approach 1:
The patent removes the complex sealing paper and plugging parts from the traditional loose particle filling method. Instead, it uses a simplified approach where adhesive-coated ends contain the tobacco particles in the central region. This extraction of unnecessary components streamlines the manufacturing process, improving production efficiency while reducing defects.
Solution Approach 2:
The patent creates a composite structure where adhesive-coated end regions combine with central tobacco particle regions. The adhesive-tobacco particle composite at the ends provides both structural integrity and particle containment without requiring separate sealing components, thus simplifying the overall structure and improving manufacturing efficiency.
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
This method ensures high porosity and smoke release, reduces adhesive residue, and maintains structural integrity, improving the aerosol generating product's performance and simplifying its structure.
Implementation Method 1
Aerosol generating substrate rods are prepared using a spray gluing method that applies adhesive only to the tops of tobacco particles, ensuring partial gluing without adhesive on sides or bottoms
Implementation Method 2
the conveyor belt carries the anti-seepage cigarette paper and the tobacco particles at a fixed speed to run
Data Source
Figure 1~3
Figure 4~5
AI summary
The present invention discloses an aerosol generating product with a sectional aerosol generating substrate rod, characterized in that the aerosol generating product includes a smoke producing core material section (1), a breathable hollow section (2), and a filtering section (3); the smoke producing core material section (1) includes a sectional aerosol generating substrate rod and anti-seepage/heat-conduction cigarette paper wrapped around the sectional aerosol generating substrate rod, two ends of the sectional aerosol generating substrate rod are short rod sections (11) formed by bonding of glued tobacco particles, and a middle is a scattered particle section (12) formed by non-glued tobacco particles; and the breathable hollow section (2) and the filtering section (3) are wrapped with forming paper (5) to form a mouthpiece, and the smoke producing core material section (1) and the mouthpiece are tipped by tipping paper (4). The short rod sections (11) at the two ends of the present invention may ensure that the unbound tobacco particles in the middle do not fall or scatter, and there is no adhesive on surfaces and gaps of the unbound tobacco particles in the middle, which further ensures an axial ventilation capacity, porosity, and a smoke release amount of the aerosol generating substrate rod. A smoke core with high porosity can not only increase a smoke producing amount, but also simplify a structure of the aerosol generating product.