Respirator Contrast Layer for Orientation and Fogging
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Solution Overview
Problem
Respirators, particularly flat-fold models, can be challenging to position correctly on the user's face due to difficulty in determining the proper orientation, and they may collapse or cause eyeglass fogging, lacking distinctive identification for environment or task suitability.
Innovation Solution
Incorporating a contrast layer with a visible surface area of at least 10% but less than 50% of the exterior surface, providing a unique appearance through color, pattern, or texture, which aids in orientation identification, prevents collapse by shaping the mask, and reduces eyeglass fogging by creating a pressure drop in the sinus region.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a flat-fold respirator is designed to be collapsible for storage, then storage convenience is improved, but orientation identification becomes difficult
Solution Approach 1:
The patent applies color changes by incorporating a contrast layer with distinctive colors or patterns that remain visible through the outer cover web. This allows the respirator to maintain orientation identification features even when collapsed for storage, resolving the contradiction between storage convenience and orientation identification.
2Ease of operation
If the mask body is made without structural support elements, then ease of folding for storage is improved, but mask shape stability deteriorates
Solution Approach 1:
The patent applies local quality by incorporating structural support elements only in specific regions where they are needed to maintain cup-shaped configuration during use, while allowing other areas to remain flexible for folding. This selective approach maintains shape stability during operation while preserving ease of folding for storage.
3Ease of operation
If the sinus region is made open for airflow, then breathing comfort is improved, but eyeglass fogging increases
Solution Approach 1:
The patent applies local quality by creating a pressure drop specifically in the sinus region through the contrast layer configuration. This localized modification creates a pressure differential that redirects airflow away from the eyeglass area while maintaining overall breathing comfort, thus reducing eyeglass fogging without compromising respiratory ease.
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 contrast layer enhances user orientation, maintains the mask's cup-like configuration, and reduces eyeglass fogging by increasing pressure drop in the sinus region, while providing distinctive identification for the respirator's type, style, and manufacturer.
Implementation Method 1
reduces eyeglass fogging by creating a pressure drop in the sinus region
Data Source
AI summary
Various embodiments of a respirator and a method of making such respirator are disclosed. In one or more embodiments, the respirator includes a mask body and a harness attached to the mask body. The mask body can include an outer cover web, an inner cover web, a filtration layer disposed between the outer cover web and the inner cover web, and a contrast layer disposed between the outer cover web and the inner cover web in a sinus region of the mask body. A portion of the contrast layer can be visible through an outer surface of the outer cover web to form a contrast region of the mask body, where the outer surface of the outer cover web faces away from the filtration layer.