Tipping Paper Plasma Perforation for CO Diffusion Control
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Solution Overview
Problem
Existing methods for perforating mouthpiece lining paper do not effectively consider the diffusion of carbon monoxide, leading to suboptimal reduction of CO concentrations in cigarette smoke, despite efforts to maintain constant permeability and flavor.
Innovation Solution
A regulated perforating method that measures and controls hole size and count in real-time using plasma perforation to maximize carbon monoxide diffusion while maintaining constant permeability, achieved by minimizing hole diameter and adjusting the number of perforation holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional perforation methods are used to maintain constant permeability, then permeability stability is improved, but carbon monoxide diffusion is insufficient
Solution Approach 1:
The invention changes the physical parameters of the perforation holes (minimizing diameter while maximizing count) to optimize CO diffusion. By controlling hole diameter to be as small as possible and hole count to achieve required permeability, the total edge area for diffusion is maximized, enabling effective CO reduction while maintaining constant permeability
Solution Approach 2:
The invention creates an optimized porous structure in the mouthpiece lining paper by establishing numerous small perforation holes. This porous configuration increases the surface area available for CO diffusion while maintaining the required permeability characteristics, thereby reducing CO concentration without compromising permeability stability
2Object-generated harmful factors
If hole diameter is minimized to maximize diffusion area, then carbon monoxide diffusion is improved, but manufacturing precision requirements increase
Solution Approach 1:
The invention implements feedback control by measuring the actual hole size and count after perforation, comparing these measurements against target values, and adjusting perforation parameters accordingly. This closed-loop control system ensures that hole diameter is minimized while maintaining manufacturing precision and achieving the required permeability
Solution Approach 2:
The invention replaces conventional mechanical perforation methods with plasma perforation technology. This substitution enables more precise control over hole formation, allowing for consistent small hole diameters and accurate hole count control, thereby minimizing manufacturing precision challenges while maximizing CO diffusion
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 approach significantly reduces carbon monoxide concentration in cigarette smoke without affecting drag resistance or flavor, achieving a maximum reduction of CO while adhering to specified permeability standards.
Implementation Method 1
perforating a mouthpiece lining paper web (4) with a regulated perforating device (20), wherein diffusivity and permeability of the perforated mouthpiece lining paper are determined inline
Implementation Method 2
plasma perforation makes extremely small hole diameters possible
Implementation Method 3
diffusion of the carbon monoxide through the pores or the holes which have been established by perforating, respectively, from the interior of the cigarette to the outside
Data Source
AI summary
A method for producing a diffusion-optimized tipping paper for tobacco products, especially filter cigarettes, by plasma perforation of the web of tipping paper for the purpose of maximum carbon monoxide reduction, wherein the diffusivity and the permeability P of the perforated tipping paper are measured in-line and diffusivity is maximized by controlling the perforation parameters, the definable target permeability Psoll being maintained at all times.