Continuous Wig Strand with Gradient Thickness Sections
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Solution Overview
Problem
Current methods for producing wigs with a multi-step pencil tapering (MS-PT) effect are labor-intensive and result in filament protrusion, poor drapability, and unstable locking, especially in mass production, which affects aesthetic and economic efficiency.
Innovation Solution
A continuous strand for wigs is developed with a structure featuring rotational twisting or cross-twisting of filaments, including amorphous or semi-crystalline organic polymers, with specific cross-sectional shapes and gradient shrinkage patterns to create symmetrical MS-PT sections, reducing filament protrusion and maintaining texture and bulkiness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If multi-step pencil tapering (MS-PT) effect is produced using traditional non-alignment methods, then aesthetic features are improved, but labor intensity increases and production efficiency decreases
Solution Approach 1:
The patent applies preliminary action by pre-forming the pencil tapering effect during the extrusion process itself. The continuous strand is extruded with gradient thickness sections already built-in, eliminating the need for subsequent non-alignment operations. This preliminary formation of the desired shape directly resolves the contradiction by achieving aesthetic features while maintaining high production efficiency.
Solution Approach 2:
The patent replaces the mechanical non-alignment system with an extrusion-based system. Instead of using mechanical means like hackles to create non-alignment and pencil tapering effects after strand formation, the invention uses extrusion geometry to directly produce gradient thickness sections, substituting a complex mechanical process with a more efficient extrusion process.
2Shape
If non-alignment process is used to create pencil tapering effect, then aesthetic features are improved, but filament protrusion occurs
Solution Approach 1:
The patent replaces the mechanical non-alignment process that causes filament protrusion with an extrusion process. The gradient thickness sections are formed during extrusion with controlled geometry, preventing the filament ends from protruding while still achieving the desired pencil tapering aesthetic effect.
Solution Approach 2:
The patent changes the fundamental parameter of how the pencil tapering effect is created - from post-extrusion non-alignment manipulation to controlled extrusion geometry. By changing the thickness profile parameter during extrusion, the invention achieves the aesthetic effect without the harmful filament protrusion that occurs in traditional methods.
3Shape
If non-alignment process is used to create pencil tapering effect, then aesthetic features are improved, but locking stability deteriorates
Solution Approach 1:
The patent replaces the non-alignment mechanical process with an extrusion process that forms gradient thickness sections with controlled geometry. This substitution maintains the pencil tapering aesthetic effect while improving locking stability, as the extruded strands have more uniform and controlled filament arrangement compared to mechanically non-aligned strands.
4Shape
If traditional methods are used to produce wigs with MS-PT effect, then aesthetic features are improved, but manufacturing costs increase
Solution Approach 1:
The patent replaces costly mechanical non-alignment processes with a more economical extrusion process. By forming the pencil tapering effect during extrusion rather than through subsequent mechanical operations, the invention reduces manufacturing steps, labor requirements, and overall production costs while maintaining the desired aesthetic features.
Solution Approach 2:
The patent applies preliminary action by forming the pencil tapering effect during the extrusion process itself, before any additional manufacturing steps are required. This eliminates the need for separate non-alignment operations, reducing both labor costs and manufacturing complexity while achieving the same aesthetic result.
Data Source
AI summary
A continuous strand includes a pencil normal (PN) section, two first pencil tapering (PT) sections, two second PT sections, and two pencil connection (PC) sections. The pencil normal (PN) section extends along a longitudinal direction thereof and having a first cross-sectional area of a constant size. The two first pencil tapering (PT) sections are tapered in such a way that cross-sectional areas decrease. Two second PT sections are tapered in such a way that the decreased cross-sectional areas increase again. The two pencil connection (PC) sections connect a first PT section and a second PT section that are adjacent to each other, and have a second cross-sectional area of a constant size. The continuous strand may implement a multi step-pencil tapering (MS-PT) effect that presents significantly improved aesthetic characteristics for a wig, without resorting to a labor-intensive manual operation.