Ear part material for mask, mask, method for producing ear part material for mask, and method for producing mask
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Solution Overview
Problem
Conventional ear hook portions in masks, especially those made of nonwoven fabric, can be excessively stretched and deformed, leading to a loss of their structural integrity and softness, which compromises their functionality.
Innovation Solution
A stretchable ear material for masks is designed with a stretchable member having a first and second surface, each covered by a surface material, where the surface materials are contracted in a predetermined direction with wrinkles, maintaining their original characteristics even when deformed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If ear hook portions are made of nonwoven fabric to provide softness, then comfort is improved, but the material cannot be excessively stretched or deformed without losing its structure and functionality
Solution Approach 1:
The ear material is constructed as a composite structure with a stretchable core layer (providing elasticity and stretchability) sandwiched between two nonwoven fabric layers (providing softness and comfort). This composite design allows the material to simultaneously achieve both comfort through the nonwoven fabric and reliable structural integrity through the stretchable core that prevents excessive deformation.
Solution Approach 2:
Different regions of the ear material have different properties: the core layer provides stretchability and elastic recovery, while the surface nonwoven fabric layers provide softness and comfort. This local differentiation of material properties allows each layer to fulfill its specific function, resolving the contradiction between comfort and structural integrity.
2Adaptability or versatility
If ear hook portions are made stretchable to accommodate various face sizes, then adaptability is improved, but the material may be excessively stretched and deformed leading to loss of characteristics
Solution Approach 1:
The ear material utilizes elastic modulus changes through its stretchable core layer, which can be stretched to accommodate different face sizes and then automatically returns to its original state. This parameter change capability allows the material to adapt to various conditions while maintaining its original characteristics through elastic recovery.
Solution Approach 2:
The ear material is designed to be dynamic rather than static - it can stretch and deform to adapt to different face sizes and wearing conditions, then automatically returns to its original configuration through the elastic properties of the core layer. This dynamic behavior resolves the contradiction between adaptability and stability.
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 stretchable ear material maintains its original characteristics and functionality even when deformed, providing a comfortable and effective fit for various face sizes without compromising softness or flexibility.
Implementation Method 1
a stretchable member including a first surface and a second surface on a side opposite to the first surface
Data Source
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AI summary
An ear material for a mask that includes a stretchable member including a first surface and a second surface on a side opposite to the first surface, a first surface material coupled to the first surface, and a second surface material coupled to the second surface, wherein, in a state before start of use, the stretchable member has a natural length, and the first surface material and the second surface material are contracted in a predetermined direction.