Starch-Based Cooling Material for Heat-Not-Burn Cigarettes
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Solution Overview
Problem
Existing cooling materials for heat-not-burn cigarettes fail to achieve strong cooling while minimizing smoke filtration, leading to high smoke temperatures and an irritating smoking experience.
Innovation Solution
A starch-based cooling material composed of 5.0 to 15.0 parts of starch, 0.2 to 5.0 parts of polylactic acid as a phase change material, and 0.3 to 3.0 parts of glycerol as a polyol, processed through twin-screw extrusion and stretching to create a multi-channel airflow unit, which effectively reduces smoke temperature and improves adhesion and molding stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If polylactic acid film is used as cooling material, then cooling effect is achieved, but the film shrinks when heated
Solution Approach 1:
The patent uses a composite material system consisting of polylactic acid phase change material embedded in a porous substrate matrix. This composite structure combines the cooling capability of polylactic acid with the dimensional stability of the porous substrate, resolving the contradiction between achieving strong cooling effect and maintaining structural stability during heating.
2Temperature
If phase change materials are added into cigarette filter stick, then smoke temperature is reduced, but smoke is intercepted
Solution Approach 1:
The patent employs a porous substrate as the carrier for the phase change material. The porous structure allows smoke to pass through freely while providing large surface area for heat absorption, thus reducing smoke temperature without intercepting or blocking the smoke flow, resolving the contradiction between cooling effectiveness and smoke transmission.
3Temperature
If straight-through groove is used for heat radiation, then cooling effect is improved, but strong cooling effect of material itself is not enhanced
Solution Approach 1:
The patent applies local quality by creating a porous structure with specific pore size distribution and phase change material placement within the cooling material. This localized optimization enhances the intrinsic cooling capability of the material itself through improved heat absorption at the material level, rather than relying solely on macroscopic heat radiation structures.
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 starch-based cooling material achieves a significant cooling effect, reducing smoke temperature to 70°C to 120°C, enhancing smoking comfort, and maintaining aroma substances while being environmentally friendly due to its biodegradable components.
Implementation Method 1
the phase change material has the effects of absorbing and storing heat, reducing an air flow temperature
Implementation Method 2
the phase change material has the effects of absorbing and storing heat
Implementation Method 3
Under the condition of swelling by water, the starch has the characteristic of self-adhesion
Implementation Method 4
The addition of the polyol softens the starch-based cooling material and improves fluidity
Implementation Method 5
heating and melting a polylactic acid, controlling temperature in four temperature zones
Implementation Method 6
heating and melting a polylactic acid, controlling temperature in four temperature zones
Data Source
AI summary
The invention discloses a starch-based cooling material and an application thereof. The starch-based cooling material of the invention is prepared by 8.0 to 9.0 parts of a starch, 0.5 to 1.0 part of a phase change material, and 0.5 to 1.0 a part of polyol. The starch-based cooling material of the invention is prepared by coordination of the starch, the phase change material and the polyol, wherein the phase change material has effects of absorbing and storing heat, a temperature of smoke can be significantly reduced, an effect of fast and strong cooling is realized, and a cooling effect can reach 70°C to 120°C. All the raw materials for preparing are biodegradable materials, and a prepared heat-not-burn cigarette filter stick can be degraded after use, which is environmental friendly, and can be widely used in the field of preparing heat-not-burning cigarette products. The starch-based cooling material has an excellent thermoplastic performance, is convenient in processing and molding, and effectively reduces interception of aroma constituents in the cigarette smoke.