Silver-Cotton Knit Fabric for 50 dB Radiation Shielding
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Solution Overview
Problem
Existing radiation shielding clothing is ineffective in blocking electromagnetic radiation at levels above 40 dB, and current fabrics fail to provide both adequate protection and comfort for everyday consumers.
Innovation Solution
A radiation-blocking fabric composition incorporating a combination of silver fibers, nylon-silver fibers, and cotton, structured in a specific pattern to achieve a surface resistance of 0.01 to 0.5 ohms, functioning as a Faraday shield with a silver content of 48-62% to block electromagnetic radiation up to 50 dB.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing radiation shielding clothing is used, then some radiation blocking is provided, but the attenuation rating is insufficient (below 50 dB)
Solution Approach 1:
The patent applies composite materials by combining silver fibers (48-62% content), nylon fibers, and cotton fibers to create a fabric that achieves 50 dB attenuation. The silver fibers provide the primary radiation shielding capability while nylon and cotton contribute structural integrity and comfort properties, resolving the contradiction between effective radiation blocking and fabric complexity.
2Reliability
If radiation blocking cloth is manufactured to block 50 dB radiation, then effective protection is achieved, but comfort to the wearer is compromised
Solution Approach 1:
The patent applies local quality by incorporating cotton fibers specifically to provide comfort characteristics (softness, breathability) in regions where the fabric contacts the wearer's skin, while silver fibers are distributed throughout to provide uniform radiation protection. This localized differentiation resolves the contradiction between protection level and comfort.
Solution Approach 2:
The composite fabric combines the radiation-blocking properties of silver with the comfort properties of cotton and the structural properties of nylon, allowing the material to simultaneously achieve 50 dB attenuation and wearer comfort that would be impossible with a single material.
3Reliability
If silver content is increased to achieve higher attenuation, then radiation blocking improves, but manufacturing cost and complexity increase
Solution Approach 1:
The patent applies parameter changes by optimizing the silver content to a specific range (48-62%) rather than using pure silver or fixed low concentrations. This parameter optimization achieves the minimum required 50 dB attenuation while maintaining manufacturing feasibility and cost-effectiveness through balanced material composition.
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 fabric effectively blocks electromagnetic radiation with an attenuation rating of at least 50 dB, providing both protection and comfort for the wearer, suitable for manufacturing undergarments and other clothing items.
Implementation Method 1
the pattern of the first fiber, second fiber and third fiber functions as a Faraday shield
Implementation Method 2
Electromagnetic shielding has become a more prominent concern but few options are available for the everyday consumer to protect themselves from radiation exposure
Data Source
AI summary
The present invention comprises a radiation blocking clothing material utilized to construct articles of clothing such as but not limited to undergarments. The radiation blocking clothing material includes a first thread fiber, a second thread fiber and a third thread fiber constructed in a double sided knit structure. The double-sided knit structure promotes the material of the first thread fiber and second thread fiber to be on one side of the body of the radiation blocking clothing. The first thread fiber is a 84 D DTY silver fiber and the second thread fiber is a 90D DTY silver thread fiber and the conductive silver functions to block radiation having Faraday properties. The third thread fiber is manufactured from a cotton or a cotton blend. The composition of the body is operable to include a range of silver content within the range of 48 to 62 percent.