Composite Plugging Member for Stable Aerosol Cavity and Flavor Flow

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Solution Overview

Problem

Existing aerosol generating products face issues with inconsistent hollow cavity lengths, movement of plugging and filtering parts during transportation and smoking, and low production efficiency due to batch filling methods, along with the operational inconveniences and costs associated with multi-hole firmware sections.

Innovation Solution

The aerosol generating product incorporates a composite plugging part with a groove corrugated tube wall and a convergent sheet rod, eliminating the need for multi-hole firmware sections, ensuring stability and airflow channels, and allowing for consistent production through compounding and rolling processes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multi-hole firmware sections are used to block aerosol source-material granules, then granule blocking function is achieved, but manufacturing costs and operational inconveniences increase

Engineering Contradiction:
Improvegranule blocking functionVSAvoidmanufacturing complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent removes the multi-hole firmware section from the system entirely. Instead of using a separate blocking component with multiple holes, the invention uses the natural friction between the granular aerosol source material and the inner wall of the paper tube to achieve granule retention. This extraction of the complex blocking component simplifies the overall device structure and reduces manufacturing complexity while maintaining the granule blocking function.

Inventive Principle:
Principle #2Taking out (Extraction)

2Ease of manufacture

If plugging part and filtering part are fixed only by friction with inner wall, then assembly simplicity is maintained, but part stability deteriorates during transportation and smoking

Engineering Contradiction:
Improveassembly simplicityVSAvoidpart stability
Core Design Contradiction:
Ease of manufactureVSReliability

Solution Approach 1:

The patent applies binder to the outer surfaces of the plugging part and filtering part before assembly, creating a preliminary bonding layer that will adhere to the inner wall of the paper tube during the filling process. This preliminary action ensures that when the components are assembled and filled, they will automatically bond to the tube wall, preventing displacement during transportation and smoking while maintaining relative assembly simplicity.

Inventive Principle:
Principle #10Preliminary action

3Ease of manufacture

If batch filling method is used for individual tubes, then filling process is simple, but production efficiency decreases

Engineering Contradiction:
Improvefilling process simplicityVSAvoidproduction efficiency
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

The patent merges multiple individual tube filling operations into a single continuous filling process. By designing the plugging part and filtering part with binder coating that adheres to the paper tube inner wall during filling, the invention enables simultaneous filling of multiple tubes in a continuous stream, rather than processing each tube individually. This merging of operations significantly increases production efficiency while maintaining the simplicity of the filling process through the self-adhering mechanism.

Inventive Principle:
Principle #5Merging (Combining)

4Reliability

If hollow cavity section is reserved between filtering part and plugging part, then aerosol gathering is enabled, but consistent axial length positioning becomes difficult

Engineering Contradiction:
Improveaerosol gathering functionVSAvoidaxial length consistency
Core Design Contradiction:
ReliabilityVSManufacturing precision

Solution Approach 1:

The patent applies binder to the outer surfaces of the plugging part and filtering part in advance, which creates a bonding mechanism that automatically positions these components at fixed locations on the inner wall of the paper tube during filling. This preliminary bonding preparation ensures that the hollow cavity section between the filtering part and plugging part maintains a consistent axial length across all produced items, as the binder-adhered components are reliably positioned during the filling process rather than requiring post-filling adjustment or complex positioning fixtures.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP4327675B1Aerosol generating product having composite-form blocking member
Publication Date: 2026.02.25 CHINA TOBACCO YUNNAN IND
  • EP4327675B1 patent drawingFigure 1~4

AI summary

The present disclosure discloses an aerosol generating product with a composite plugging part, including an integrated outer sleeve (1), an aerosol generating matrix (6), a plugging part (2), a hollow cavity structure (3) and a filtering part (4) located inside the outer sleeve (1); the plugging part (2) includes a tube wall (21) and a tube cavity (22), the tube wall (21) has a groove corrugated structure, including an outer layer (211), an inner layer (212), and a groove corrugated layer (213) between them; the outer layer (211) limits the outer surface of the plugging part (2), and the inner layer (212) limits the tube cavity (22); a convergent sheet rod (221) is provided inside the tube cavity (22). During smoking, the convergent sheet rod shrinks by heat and blocks part of the central airflow, so that more aerosols contact with aroma-enhancing materials and / or smoking materials on the groove corrugated layer (213), thereby improving the effect of aerosol flavoring and increasing smoke amount.