Hair Extension with Linear Base and Individual Knot Attachment

Solution Overview

Problem

Conventional hair extensions, such as tape-in and knot types, often appear unnatural due to fixed ends and excessive volume, especially when attached near the scalp, as they do not allow individual movement of hair strands and can create an unnatural appearance.

Innovation Solution

A hair extension system featuring a linear base member with knot parts and a fixing part that allows each hair strand to move naturally, where the fixing part is attached to the hair part extending from the knot, creating a natural look without excessive volume.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the upper end portions of hairs are integrated with a coating agent component into planar form, then the manufacturing process is simplified, but the hair extensions appear unnatural due to fixed ends and gloss of the coating agent

Engineering Contradiction:

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The invention extracts the coating agent component from the hair attachment structure, eliminating the planar integration method that causes unnatural appearance. By removing the coating agent entirely and using knot-based attachment on a linear base member, the patent resolves the contradiction between manufacturing simplicity and natural appearance.

Inventive Principle:

Principle #2Taking out (Extraction)

2Stability of the object's composition

If the upper end portions of hairs are fixed in planar form to an adhesive agent, then the structure is stable, but the ends of the upper end portions do not move individually creating an unnatural look

Engineering Contradiction:

Core Design Contradiction:

Stability of the object's compositionVSManufacturing precision

Solution Approach 1:

The invention segments the hair attachment structure by using individual knots for each hair strand on a linear base member, rather than fixing multiple hairs together in a planar form. This segmentation allows each hair end to move independently while maintaining attachment stability, resolving the contradiction between stability and natural movement.

Inventive Principle:

Principle #1Segmentation

3Reliability

If the upper end portions of hairs are connected to the wearer's hair near the scalp using planar members, then the attachment is secure, but excessive volume is given to the entire head creating an unnatural appearance

Engineering Contradiction:

Core Design Contradiction:

ReliabilityVSVolume of moving object

Solution Approach 1:

The invention transitions from using planar members (2D) to a linear base member (1D) for attaching hair extensions. This dimensional change allows the extension to be attached securely near the scalp without adding excessive volume to the head, as the linear structure has minimal bulk compared to planar structures.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS11540574B2Hair extension and manufacturing and attaching method of the same

Publication Date: 2023.01.03

AI summary

For obtaining a natural-looking hair without excessive volume compared with traditional hair extensions, there are provided a hair extension and manufacturing & attaching method of the same, comprising a linearly extending base member (200); a plurality of hair extension strands (300) to be provided longitudinally along the base member (200), each of the plurality of hair extension strands (300) including a knot part (310) being a knot formed on the base member (200) and a hair part (330) extending from the knot part (310); and a fixing part (400) to be fixed to a portion of the hair part (330) so as to be adjacent to the base member (200) for connecting the plurality of the hair extension strands (300) to the hair of a subject.