Six-Layer Cigarette Filter with Activated Carbon and Silica Gel
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Solution Overview
Problem
Current cigarette filters cannot completely eliminate serious carcinogens and harmful substances from cigarette smoke, and they lack antimicrobial and air-purifying properties.
Innovation Solution
A six-layer cigarette filter is developed, comprising filter cotton, activated carbon, five-hole glue, filter particles, filter fluid, and a silica gel cover, injection molded using non-toxic polycarbonate or polymethylmethacrylate, with specific raw materials for the filter particles and fluid that include nano-grade diatomaceous earth, activated carbon, and other additives for enhanced filtration and thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional filter cotton is used, then the structure is simple and easy to manufacture, but it cannot completely filter out serious carcinogens and harmful substances
Solution Approach 1:
The filter is divided into six distinct layers, each with specific functions: first layer (filter cotton with activated carbon) for initial filtration, second layer (five-hole glue) for structural support, third layer (filter cotton) for additional filtering, fourth layer (filter particles) for carcinogen adsorption, fifth layer (filter cotton with filter fluid) for chemical filtration, and sixth layer (silica gel cover) for thermal insulation and final filtration. This segmentation allows each layer to target specific harmful substances, achieving comprehensive carcinogen removal while maintaining manufacturability through modular construction
Solution Approach 2:
The filter combines multiple materials with complementary properties: activated carbon for adsorption of volatile organic compounds, filter particles containing nano-grade diatomaceous earth and other additives for enhanced carcinogen capture, filter fluid for chemical neutralization of harmful substances, and silica gel for thermal insulation and moisture control. This composite material approach enables the filter to address multiple types of harmful factors simultaneously without requiring excessive structural complexity
2Object-affected harmful factors
If more filter layers and materials are added to improve filtration, then carcinogen removal improves, but manufacturing complexity and cost increase
Solution Approach 1:
By segmenting the filter into six standardized layers with clearly defined functions and material compositions, the manufacturing process becomes more manageable. Each layer can be prepared and quality-checked independently before assembly, reducing overall production complexity despite the increased number of components. The segmentation allows for specialized equipment to be used for each layer type, improving efficiency
Solution Approach 2:
Filter cotton serves multiple functions across different layers: mechanical filtration in the third layer, carrier for activated carbon in the first layer, and carrier for filter fluid in the fifth layer. This multi-functionality reduces the need for separate specialized components, simplifying the overall manufacturing process while maintaining comprehensive harmful substance removal capabilities
3Adaptability or versatility
If traditional filters are used, then the structure is simple, but they lack antimicrobial and air-purifying properties
Solution Approach 1:
The filter incorporates materials with inherent antimicrobial and air-purifying properties: activated carbon provides adsorption of volatile organic compounds and some antimicrobial activity, filter particles containing various additives enhance biological filtration capabilities, and filter fluid provides chemical antimicrobial action. These composite materials enable the filter to perform multiple functions (carcinogen removal, antimicrobial protection, air purification) within the existing six-layer structure without requiring additional complexity
Solution Approach 2:
The filter cotton and filter particles are designed to serve multiple purposes: mechanical filtration of particulates, adsorption of gases and vapors, antimicrobial protection through embedded agents, and air purification through catalytic or biological mechanisms. This multi-functionality allows a single filter structure to address diverse harmful factors including carcinogens, bacteria, and air pollutants without needing separate specialized components for each function
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 filter effectively adsorbs tar and nicotine, reduces smoking-related harm, and demonstrates good thermal insulation, antimicrobial, and air-purifying properties, significantly decreasing the tar and nicotine content in cigarette smoke.
Implementation Method 1
a first layer includes filter cotton with an activated carbon... has good adsorption effect on tar and nicotine
Implementation Method 2
decompose and convert benzopyrene, nitrosamine, carbon monoxide, hydrogen cyanide, ammonia and other carcinogens and gases
Implementation Method 3
The nano aerogel has a very low thermal conductivity of 0.020 watt per meter kelvin (W/m·K) at room temperature, so it has a good thermal insulation effect
Implementation Method 4
the sixth layer includes a silica gel cover... demonstrates good thermal insulation, antimicrobial, and air-purifying properties
Data Source
AI summary
A harm-reducing cigarette filter, a method for preparing the cigarette filter and an application of the cigarette filter are disclosed, and the cigarette filter includes six layers from outside to inside: a first layer includes filter cotton with an activated carbon, a second layer includes a five-hole glue, a third layer includes filter cotton, a fourth layer includes filter particles, a fifth layer includes filter cotton with filter fluid, and a sixth layer includes a silica gel cover. The cigarette filter is injection molded by utilizing non-toxic polycarbonate (PC) or polymethylmethacrylate (PMMA). The experimental research shows that the cigarette filter has good adsorption effect on tar and nicotine, and reduces smoking people to absorb harmful substance.