Toupee Fastening Threads for Longer Secure Attachment
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Solution Overview
Problem
Existing toupees experience inevitable loosening due to hair regrowth, necessitating frequent detachment and reattachment, which is unsatisfactory for maintaining a secure fit.
Innovation Solution
Incorporating additional fastening threads that run loosely outside or inside the flat structure, connected to the boundary thread with ends on opposite sides, providing enhanced attachment points for hot-melt bonding to natural hair, thereby improving positional security and extending the time between reattachments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single boundary thread is used for attachment, then the structure is simple, but the fastening security deteriorates due to hair regrowth
Solution Approach 1:
The boundary thread is segmented into multiple independent fastening threads (first boundary fastening thread, second boundary fastening thread, etc.) distributed around the perimeter of the flat structure. Each segment can independently secure the hair replacement piece to different sections of the wearer's hair, providing redundant attachment points that maintain security even when some segments loosen due to regrowth.
Solution Approach 2:
The fastening system transitions from a single circumferential thread to multiple radially distributed threads extending from the center toward the boundary. This dimensional redistribution creates attachment points across different spatial zones, allowing the structure to maintain stability through distributed rather than concentrated fastening.
2Reliability
If the boundary thread runs along the entire circumference, then the attachment coverage is maximized, but the positional security deteriorates due to uniform loosening from regrowth
Solution Approach 1:
Different boundary fastening threads are positioned at specific locations around the perimeter to target areas with different regrowth characteristics. The loose fastening threads provide adjustable local adaptation, allowing customization of attachment strength and position at different zones of the flat structure based on individual regrowth patterns.
Solution Approach 2:
The fastening system incorporates adjustable elements including loose fastening threads that can be repositioned, re-tensioned, or reconfigured. This dynamic capability allows the attachment system to adapt to changing regrowth conditions over time, extending the effective fastening interval by maintaining security despite progressive loosening.
3Reliability
If additional fastening threads are added, then the fastening security is improved, but the device complexity increases
Solution Approach 1:
The boundary threads serve multiple functions: they provide structural support for the flat structure, serve as attachment points for fastening to the wearer's hair, and act as anchoring points for loose fastening threads. This multi-functionality reduces the need for separate dedicated fastening elements, thereby limiting the increase in overall device complexity despite adding multiple fastening threads.
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 additional fastening threads enhance the toupee's fit and stability, allowing for extended intervals between reattachments, even in areas with thinning hair, by securing the toupee to additional hair sections.
Implementation Method 1
a localized thread attachable to one's own hair by hot-melt bonding
Data Source
AI summary
Hair replacement piece (1) consisting of an essentially oval or polygonal flat structure (2) with embedded replacement hairs comprising in the area of its boundary a localized circumferential thread (3) attachable to one's own hair by hot-melt bonding. In order to enhance the seat and prolong the fastening period of the hair replacement piece at least one additional fastening thread (4) is provided which is connected to the thread (3) with at least on of its two ends (5;6) and runs loosely.