Flat Face Mask with Preformed Nose Contour for Orientation
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Solution Overview
Problem
Existing flat face masks often fail to be properly oriented when worn, leading to incorrect layer placement, as the inner and outer layers are frequently confused due to similar colors or lack of clear differentiation, resulting in improper donning even with color differentiation or 'inside' labels.
Innovation Solution
A flat face mask design featuring a preformed nose contour that bows outward, allowing for correct orientation by aligning the nose contour with the nose, eliminating the need for labels or color recognition, and maintaining flexibility through areas without thermal bonding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the inner and outer layers are made of the same color, then manufacturing cost is reduced, but identification of proper orientation becomes difficult
Solution Approach 1:
The nose strip is formed with an asymmetric contour that creates a convex outer surface and a concave inner surface. This asymmetric geometry provides a clear visual and tactile cue for proper orientation without requiring different colors or additional labeling, thus maintaining manufacturing simplicity while solving the orientation identification problem.
2Ease of operation
If the nose strip is pressed into a contour, then proper orientation is clearly indicated, but the flat shape of the mask is altered
Solution Approach 1:
Only the nose strip portion of the mask is formed with a contoured shape, while the rest of the mask body remains flat. This localized contouring provides orientation indication without significantly altering the overall flat shape and packability of the mask.
3Strength
If the mask is made entirely of thermally bonded material, then structural integrity is improved, but flexibility is reduced
Solution Approach 1:
Different regions of the mask are treated differently: the nose strip area is thermally bonded to maintain structural integrity and shape retention, while other portions of the mask body are left unbonded or lightly bonded to preserve flexibility and comfort against the skin.
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
Ensures proper layer orientation upon donning, preventing inside-out wear and enhancing usability by providing a clear visual cue for correct placement, thus ensuring the effectiveness of fluid-resistant and anti-microbial layers.
Implementation Method 1
The nose strip is pressed into a contour, with the outside of the contour being convex and the inside of the contour being concave
Implementation Method 2
The face mask has an area without thermal bonding so as to retain flexibility
Data Source
AI summary
A face mask has mask material and ties or ear loops coupled to the mask material. The face mask is flat until worn. The mask material has an outside and an inside, which inside is designed to be against the wearer's face when the mask is worn. A deformable nose strip is provided near a top edge of the mask material. The nose strip is preformed into a contour for fitting about a nose. The contour bows out from the inside to the outside. A wearer donning the mask intuitively knows to orient the contour to the wearer's nose, wherein the inside is automatically positioned against the wearer's face.