Cellulose Acate Cooling Element Grooves for Heat-Not-Burn
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Solution Overview
Problem
Conventional PLA segments in tobacco heated and heat-not-burn products face limitations in availability, manufacturing capability, filtration properties, sensation, firmness, biodegradability, and appearance, which affect their cooling performance and consumer experience.
Innovation Solution
A cooling element featuring a longitudinally extending core of thermoformed cellulose acetate material with a profiled outer surface comprising C-shaped or U-shaped grooves or channels, optionally wrapped with paper, providing effective cooling while maintaining a cigarette-like appearance and feel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If PLA segments are used for cooling, then cooling function is provided, but availability and manufacturing capability are limited
Solution Approach 1:
The patent changes the material parameter from PLA to cellulose acetate, which has better manufacturing availability and capability while maintaining the cooling function. The grooves are formed through standard molding processes with controlled depth parameters (0.5-2.6mm) that are easier to manufacture than PLA segments.
2Temperature
If PLA segments are used for cooling, then cooling function is provided, but filtration properties are insufficient
Solution Approach 1:
The patent uses cellulose acetate material that combines cooling functionality with improved filtration properties. The material itself provides filtration capability while the added grooves enhance the cooling function, creating a composite structure that addresses both requirements simultaneously.
3Temperature
If PLA segments are used for cooling, then cooling function is provided, but appearance and feel are inadequate
Solution Approach 1:
The patent segments the cooling element into a core structure with external grooves, allowing the outer surface to be shaped and wrapped to match cigarette appearance. The grooves are positioned and sized to provide cooling while the outer wrapper restores the traditional cigarette-like appearance and tactile feel.
4Temperature
If PLA segments are used for cooling, then cooling function is provided, but biodegradability is poor
Solution Approach 1:
The patent changes the material composition from synthetic PLA to natural cellulose acetate, which is biodegradable. This material substitution maintains the cooling function through the groove structure while improving environmental compatibility and biodegradability.
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 cellulose acetate cooling element effectively cools vapors, offering a biodegradable alternative that surpasses conventional PLA segments in performance, providing adequate cooling pathways for vapor flow and matching the aesthetic and tactile experience of traditional products.
Implementation Method 1
a cooling element featuring a longitudinally extending core of thermoformed cellulose acetate material with a profiled outer surface comprising C-shaped or U-shaped grooves or channels... providing effective cooling while maintaining a cigarette-like appearance and feel
Data Source
AI summary
The present invention provides a cooling element (4) with a longitudinally extending core of cellulose acetate material having a profiled outer surface including a plurality of grooves or channels (9) which extend the full length of the core for use with a smoking article such as a tobacco heated product (1) or heat-not-burn product (1).