Layered Hair Weft Structure for Thin Edges and Higher Volume
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing hair wefts, whether handmade or machine-made, suffer from issues such as thick and visible edges, discomfort due to folded-back hair, poor breathability, and limited hair volume, leading to poor wearing experience and high production costs.
Innovation Solution
A hair weft design comprising a first hair weft unit with a hair transplantation base and a first hair strand, and a second hair weft unit with a second hair strand fixed through quilting lines and glue, combined to form a seamless and layered structure that mimics natural hair growth, with adjustable density and volume.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional handmade or machine-made methods are used to produce hair wefts, then production efficiency can be improved, but the weft edge becomes thick and visible, affecting wearing comfort and natural appearance
Solution Approach 1:
The hair weft is divided into multiple independent layers (first hair weft unit and second hair weft unit), each with its own base and hair strands. This segmentation allows each layer to be thin and invisible individually, while collectively providing sufficient hair volume. The multiple layers are stacked and bonded together, eliminating the need for a single thick weft edge.
Solution Approach 2:
The solution transitions from a single-plane thick weft to a multi-layer stacked structure. By adding the dimension of layering (stacking multiple thin weft units vertically), the patent achieves both thin edges (each layer is invisible) and sufficient hair volume (collective effect of multiple layers), resolving the contradiction between edge thickness and hair quantity.
2Device complexity
If traditional hair weft structures are used, then production process can be simplified, but folded-back hair contacts the scalp during movement, causing tingling sensation and discomfort
Solution Approach 1:
The patent performs preliminary actions during manufacturing: the hair strands are fixed to the base in a specific orientation, and the weft edge is processed to prevent folding. The spacer structure is pre-formed to maintain proper spacing and prevent hair from folding back toward the scalp. These preliminary structural arrangements ensure comfort during wear without requiring complex adjustments later.
Solution Approach 2:
The spacer structure acts as an intermediary element between the hair strands and the weft edge. It maintains proper spacing and positioning, preventing the hair from folding back and contacting the scalp. This intermediary structure simplifies the overall design while solving the comfort issue.
3Ease of manufacture
If traditional single-layer hair weft structure is used, then manufacturing process can be simplified, but hair volume and density are limited
Solution Approach 1:
The hair weft is segmented into multiple layers (first and second hair weft units), each contributing to the total hair volume. This allows the product to achieve greater hair quantity without requiring an overly complex single-layer structure. Each layer can be manufactured using similar processes, maintaining manufacturing simplicity while increasing overall hair volume through stacking.
Solution Approach 2:
Multiple hair weft units are merged by stacking and bonding them together. This combining approach increases the total hair volume and density of the final product while using repeated, standardized manufacturing processes for each unit, thus maintaining ease of manufacture through modular assembly.
4Quantity of substance
If thick weft edge is used to provide sufficient hair volume, then hair quantity can be increased, but wearing comfort deteriorates due to visible edges and scalp irritation
Solution Approach 1:
The total hair volume is distributed across multiple thin layers instead of being concentrated in a single thick layer. Each layer is thin enough to be invisible and comfortable against the scalp, while the collective stacking of multiple layers provides sufficient hair volume. This segmentation eliminates the harmful effect of thick edges while maintaining the desired hair quantity.
Solution Approach 2:
The solution moves from a single-plane thick structure to a multi-dimensional stacked structure. By distributing hair volume across multiple thin planes (layers), the patent achieves sufficient hair quantity without creating visible or irritating thick edges at any single location.
Data Source
AI summary
A hair weft includes a first hair weft unit and a second weft unit, the first hair weft unit includes a first hair strand and a first glue base, wherein the first hair strand is fixed to the first glue base, the second weft unit includes a second hair strand and a second glue base, wherein the second hair strand is fixed to the second glue base, wherein the first glue base is attached to the first glue base.