Composite Wick for Fragrance Release Systems
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Solution Overview
Problem
Diffusion-driven fragrance release systems face challenges in achieving both adequate mechanical stability and substance transport rate, as wicks often soften and bend when absorbing liquid fragrance, compromising their ability to remain free-standing and effectively release fragrance.
Innovation Solution
A fragrance release system featuring a wick composed of two different plant-based fibrous materials, where the core material has a low contact angle with water and the surrounding material has a higher contact angle, providing enhanced mechanical stability and substance transport, along with a diffuser that increases the fragrance release surface area, and an optional dye reservoir for coloration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a wick absorbs liquid fragrance preparation, then the substance transport rate is improved, but the mechanical stability deteriorates as the wick softens and bends
Solution Approach 1:
The wick is constructed as a composite material system with an inner core made of highly absorbent material (cotton or cellulose) and an outer sheath made of mechanically stronger material (Aeschynomene aspera). This composite structure allows the inner core to provide high substance transport rate through capillary action while the outer sheath provides mechanical stability to prevent softening and bending when the wick absorbs liquid fragrance preparation.
2Productivity
If the wick material is highly absorbent to improve fragrance transport, then the substance transport rate is improved, but the mechanical stability deteriorates due to softening
Solution Approach 1:
The wick combines an inner core of highly absorbent material (cotton or cellulose with capillary diameter 1-10 μm) with an outer sheath of mechanically stronger material (Aeschynomene aspera). The inner core ensures high fragrance transport rate through its superior capillary properties, while the outer sheath maintains mechanical strength and prevents softening when the wick becomes saturated with liquid fragrance preparation.
3Area of stationary object
If a diffuser is added to increase fragrance release surface area, then the fragrance release is improved, but the device complexity increases
Solution Approach 1:
The diffuser is merged with the wick structure by directly connecting it to the upper end of the wick. The diffuser serves as an extension of the wick, providing a larger surface area for fragrance release while being structurally integrated into the existing wick-container system. This merging approach increases fragrance release efficiency without significantly increasing device complexity.
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 system achieves improved mechanical stability and fragrance transport efficiency while allowing for increased fragrance release and environmentally friendly disposal through the use of natural materials, with the diffuser expanding the surface area for fragrance release and the dye reservoir enhancing visibility during use.
Implementation Method 1
the preparation is transported to the surfaces of the wick against the direction of gravity owing to the capillary forces of the wick
Implementation Method 2
from where the fragrance transported in this way is released to the environment, usually via evaporation
Implementation Method 3
the first material with a cotton fiber content of more than 20% forming the core of the wick... the core material having the small contact angle, preferably between 0° and 90°, relative to water
Data Source
AI summary
The apparatus comprises a fragrance release system comprising a wick, at least one diffuser, the surface area of the diffuser in contact with ambient air being larger than the surface area of the wick in contact with ambient air, and a container to hold the wick, a fragrance preparation that is stored in the container, the fragrance preparation being transported through the wick to the diffuser by capillary action against the direction of gravity when the wick is housed in the container, wherein the substantially cylindrical wick is formed from at least two mutually different plant-based fibrous materials, the first material forming a core and the second material surrounding this core, and the difference between the contact angle of the core material and that of the material surrounding the core relative to water being at least 10°, the core material having the small contact angle, preferably between 0° and 90°, relative to water.