Protective clothing
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Solution Overview
Problem
Existing protective clothing lacks a balance between high dust-proof properties, air permeability, moisture permeability, and suitability for thread sewing, particularly when handling powder dust containing radioactive materials, leading to discomfort and reduced efficiency during summer work.
Innovation Solution
A dust-proof clothing material comprising a fiber layer and an electret nonwoven fabric layer, with an adhesion area ratio between 5% and 10%, using a hot-melt adhesive, and containing hindered amine or triazine additives, which provides excellent dust-proofing, air permeability, and moisture management while being suitable for sewing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If chemical protective clothing is made from polyethylene or polypropylene to prevent powder dust entry, then dust-proof property is improved, but air permeability and moisture permeability are reduced causing discomfort and heat stress
Solution Approach 1:
The protective clothing is divided into multiple functional layers: an outer layer for dust-proof protection and an inner layer for moisture management and comfort. This segmentation allows each layer to specialize in one function, resolving the contradiction between dust-proof property and wearer comfort by preventing dust entry while maintaining breathability and moisture wicking.
Solution Approach 2:
The invention uses composite material structures combining different fabrics with distinct properties - typically a nonwoven fabric or coated fabric for dust barrier functionality paired with a breathable, moisture-wicking fabric for comfort. This composite approach enables simultaneous achievement of high dust-proof performance and adequate air/moisture permeability.
2Reliability
If electret nonwoven fabric is used to achieve high collection efficiency for powder dust, then dust-proof property is improved, but strength and abrasion resistance are insufficient for practical protective clothing
Solution Approach 1:
The invention merges electret nonwoven fabric layers with strong supporting fabric layers to create a composite structure. The electret layer provides high collection efficiency for powder dust particles, while the supporting fabric layer contributes tensile strength, abrasion resistance, and structural integrity, allowing the clothing to withstand practical use conditions.
Solution Approach 2:
By creating a composite material system where electret nonwoven fabric is combined with durable base fabrics through lamination or coating techniques, the invention achieves both high dust collection efficiency and sufficient mechanical strength for protective clothing applications.
3Reliability
If adhesive tape is used to fix space between protectors and chemical protective clothing to prevent outside air flow, then dust-proof property is improved, but humidity and temperature increase causing heat stress
Solution Approach 1:
The protective clothing system is segmented into multiple functional layers that work together: an outer dust barrier layer, intermediate filtration layers, and an inner moisture management layer. This layered segmentation eliminates the need for adhesive sealing while maintaining dust-proof performance and allowing breathability through the layered structure, thereby controlling internal temperature and humidity.
Solution Approach 2:
The invention employs porous fabric structures with controlled porosity that allow air and moisture vapor transmission while blocking powder dust particles. The porous structure enables passive breathability without requiring adhesive sealing, thus preventing heat and moisture accumulation inside the clothing.
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 solution results in protective clothing that is effective in preventing dust entry, maintains wearer comfort by allowing air and moisture permeability, and is suitable for thread sewing, enhancing both performance and usability.
Implementation Method 1
an electret nonwoven fabric layer... high collection efficiency for powder dust
Implementation Method 2
The dust-proof material has a fiber layer and an electret nonwoven fabric layer... high dust proof property which prevents powder dust from entering into clothing
Implementation Method 3
using a hot-melt adhesive
Implementation Method 4
the fiber layer and the electret nonwoven fabric layer, which are adjacent to each other, are adhered at an adhesion area ratio of 5% or more and 10% or less
Data Source
Figure 1
Figure 2a
Figure 2b
AI summary
The present invention provides a protective clothing having high dust proof property which prevents powder dust from entering into the clothing and having high air permeability for comfortable work, in which the temperature does not rise easily even in summer. A dust-proof clothing using the following dust-proof material, wherein i) the dust-proof material has a fiber layer and an electret nonwoven fabric layer, and a total number of the fiber layer and the electret nonwoven fabric layer is 2 or more; and ii) in the dust-proof material, the fiber layer and the electret nonwoven fabric layer, which are adjacent to each other, are adhered on a region having an area ratio of 5% or more and 10% or less.