Wig Foundation Net with Segmented Elastic Moduli
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Solution Overview
Problem
Existing wig foundation nets fail to effectively correct sagging and wrinkles on the facial skin while preventing the wig from sliding up, due to inadequate elastic distribution and friction.
Innovation Solution
A wig foundation net design featuring a first elastic net-shaped member, a second elastic net-shaped member with higher elastic modulus, and an elastic belt-shaped member with a friction surface, positioned in order from the top of the head, ensuring the wig remains in place and effectively lifts the facial skin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a lift band is applied to the top of the head to raise sagging and wrinkles, then the facial skin correction is improved, but the wig foundation net and wig slide up due to the force of the lift band
Solution Approach 1:
The wig foundation net is divided into multiple net portions (first, second, third, fourth net portions) with different elastic moduli arranged in specific regions. The first net portion with higher elastic modulus is positioned at the top to provide lifting force, while the second net portion with lower elastic modulus is positioned at the bottom to prevent sliding, segmenting the functional requirements of lifting and stabilizing across different spatial zones.
Solution Approach 2:
Different regions of the wig foundation net are assigned different elastic modulus values to perform different functions. The first net portion at the top has higher elastic modulus for lifting sagging skin, while the second net portion at the bottom has lower elastic modulus to maintain stability and prevent sliding, creating local quality variations that satisfy conflicting requirements in different areas.
2Shape
If an elastic body with maximum elastic modulus is used in the upper layer portion to eliminate sagging and wrinkles, then the facial skin lifting is improved, but the turban slides up due to shrinkage of the upper layer portion
Solution Approach 1:
The head covering is segmented into upper and lower layers with different elastic modulus characteristics. The upper layer contains the first net portion with higher elastic modulus for lifting, while the lower layer contains the second net portion with lower elastic modulus for stability, segmenting the conflicting requirements of lifting force and position stability into separate functional zones.
Solution Approach 2:
The elastic properties are made non-uniform across the head covering structure. The upper region has higher elastic modulus for lifting effect, while the lower region has lower elastic modulus to prevent sliding, creating local quality differences that resolve the contradiction between lifting performance and position stability.
3Ease of manufacture
If a wig foundation net with uniform elastic properties is used, then the manufacturing is simple, but it cannot simultaneously correct sagging and prevent wig sliding
Solution Approach 1:
Instead of using a uniform elastic material throughout, the wig foundation net is segmented into multiple portions with different elastic moduli. This segmentation enables the net to simultaneously provide lifting force in some regions and stability in other regions, achieving multi-function performance while maintaining a relatively simple net structure that can be manufactured using standard techniques.
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 design effectively corrects sagging and wrinkles on the facial skin while preventing the wig from sliding up, providing a secure and lifting effect.
Implementation Method 1
a first net portion formed with a first elastic net-shaped member; a second net portion connected to the first net portion and formed with a second elastic net-shaped member
Implementation Method 2
a position holder connected to the second net portion and formed with an elastic belt-shaped member including a friction surface
Data Source
Figure 1
Figure 2(a)~3(b)
Figure 4(a)~4(c)
AI summary
There is provided a wig foundation net 2 worn under a wig, comprising: a first net portion 4 formed with a first elastic net-shaped member 12; and a second net portion 6 connected to the first net portion 4 and formed with a second elastic net-shaped member 14; and a position holder 8 connected to the second net portion 6 and formed with an elastic belt-shaped member 16 including a friction surface 22. At wearing the wig foundation net 2, the first net portion 4, the second net portion 6 and the position holder 8 are located in the order thereof from a top side of the head, and an elastic modulus of the second elastic net-shaped member 14 is higher than an elastic modulus of the first elastic net-shaped member 12.