Adsorbent Filter Media Structure Without Adhesive Pore Blocking
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Solution Overview
Problem
Existing filter media using adsorbents like activated carbon face issues with adhesive usage, which can reduce porosity, lead to delamination, and affect overall performance due to pore plugging and environmental sensitivity.
Innovation Solution
A fibrous container structure with an open phase and a second phase, utilizing a combination of thicker and thinner fibers, allows for increased adsorbent loading without adhesive, maintaining porosity and enhancing filtration performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If adhesive is used to adhere the carbon layer to the fibrous substrate, then the adsorbent is retained in the filter media, but the porosity decreases and overall effectiveness is reduced
Solution Approach 1:
The patent removes the adhesive component from the filter media system entirely. Instead of using adhesive to bind the adsorbent layer to the substrate, the adsorbent particles are directly embedded within the fibrous substrate matrix, eliminating the harmful adhesive substance while maintaining structural integrity and adsorbent retention.
Solution Approach 2:
The patent creates a composite structure where the adsorbent particles are integrated directly into the fibrous substrate matrix. This composite approach combines the mechanical retention capability of the fiber network with the adsorption functionality of the adsorbent particles, eliminating the need for separate adhesive bonding while maintaining both structural strength and porosity.
2Reliability
If high amounts of adhesive are used to prevent adsorbent escape, then adsorbent retention improves, but porosity and filtration effectiveness decrease
Solution Approach 1:
The patent eliminates the adhesive substance from the system, removing the trade-off between retention and effectiveness. The adsorbent is retained through physical embedding in the fiber matrix rather than chemical bonding via adhesive, allowing high filtration effectiveness to be maintained while achieving adequate adsorbent retention.
Solution Approach 2:
The patent utilizes the porous structure of the fibrous substrate to physically trap and retain adsorbent particles. The interstitial spaces between fibers provide both retention mechanisms and maintained porosity for fluid flow, eliminating the need for adhesive that would block pores and reduce filtration effectiveness.
3Reliability
If adhesive is applied to the fibrous substrate, then the adsorbent layer is secured, but the adhesive may clog pores and lower adsorbent performance
Solution Approach 1:
The patent removes the adhesive substance entirely from the filter media construction. The adsorbent layer is secured through the mechanical interlocking of adsorbent particles within the fibrous substrate matrix, eliminating the pore-clogging adhesive while maintaining layer stability through the three-dimensional fiber network structure.
4Quantity of substance
If a distinct layer of adsorbent is formed on the fibrous substrate, then adsorbent loading is achieved, but delamination may occur under environmental conditions
Solution Approach 1:
The patent merges the adsorbent layer with the fibrous substrate by directly embedding adsorbent particles within the fiber matrix during substrate formation. This integration eliminates the separate adsorbent layer that would otherwise delaminate, creating a unified composite structure where adsorbent particles are distributed throughout the substrate volume rather than forming a detachable surface layer.
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 fibrous container design enables higher adsorbent loading and improved filtration efficiency by retaining adsorbents within the structure, minimizing adhesive use, and optimizing surface area utilization.
Implementation Method 1
Filter media which contain absorbents remove contaminants from fluids via surface adsorption, where the contaminants are attracted to the surface of the adsorbent and held therein via physical attraction and/or a chemical bond.
Data Source
AI summary
A filter medium including a fibrous container including an open phase, and a second phase on the open phase; and an adsorbent within the fibrous container, wherein each of the open phase and the second phase comprise thicker fibers and thinner fibers, and wherein an average diameter of fiber in the open phase is greater than an average diameter of fibers in the second phase.