Continuous Weft Hair Extension Spools for Waste-Free Dispensing

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Solution Overview

Problem

Existing weft hair extension packaging is not customizable, leading to material waste and increased costs due to discarded unused portions, inefficient inventory management, and environmental impact from repeated shipping and packaging.

Innovation Solution

A continuous weft hair extension dispenser device with interchangeable spools and cartridges that allow stylists to dispense specific widths of hair extensions needed, reducing waste and enabling efficient inventory management and customizable styles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If pre-cut weft hair extensions are used in packages, then inventory management is simplified, but material waste increases due to discarded unused portions

Engineering Contradiction:

Improveinventory managementVSAvoidhair material waste

Core Design Contradiction:

Ease of manufactureVSLoss of substance

Solution Approach 1:

The continuous weft hair extension is divided into multiple detachable cartridges, each containing a specific length of hair. This allows stylists to use only the needed portion while keeping remaining cartridges for future use, eliminating waste without complicating inventory management.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of discarding unused portions of pre-cut wefts, the system allows recovery and reuse of remaining hair extensions by storing them in cartridges. The continuous weft can be dispensed incrementally, and unused portions are retained for later use, converting what would be waste into recoverable resources.

Inventive Principle:

Principle #34Discarding and recovering

2Quantity of substance

If multiple pre-cut weft packages are used for thick or long hair, then sufficient volume is achieved, but cost increases due to purchasing and discarding unused portions

Engineering Contradiction:

Improvehair volumeVSAvoidhair material waste

Core Design Contradiction:

Quantity of substanceVSLoss of substance

Solution Approach 1:

The continuous weft system allows hair extensions to be dispensed continuously in the exact quantity needed, rather than using discrete pre-cut packages. This ensures that the full quantity of purchased hair material is utilized, eliminating the 10-20% waste associated with pre-cut wefts while maintaining sufficient volume for thick or long hair.

Inventive Principle:

Principle #20Continuity of useful action

3Ease of manufacture

If pre-cut weft hair extensions are used, then packaging and shipping are simplified, but environmental impact increases due to repeated shipping and packaging waste

Engineering Contradiction:

Improvepackaging efficiencyVSAvoidenvironmental impact

Core Design Contradiction:

Ease of manufactureVSObject-affected harmful factors

Solution Approach 1:

By segmenting the continuous weft into interchangeable cartridges, the system reduces the need for repeated shipping of multiple pre-cut weft packages. Salons can purchase larger quantities less frequently, as the continuous format allows incremental usage without requiring frequent reordering and repackaging, thereby reducing environmental impact.

Inventive Principle:

Principle #1Segmentation

4Volume of stationary object

If pre-cut weft hair extensions are used, then storage space is reduced, but handling efficiency decreases due to tangling and difficulty in sorting

Engineering Contradiction:

Improvestorage spaceVSAvoidhandling efficiency

Core Design Contradiction:

Volume of stationary objectVSEase of operation

Solution Approach 1:

The continuous weft is divided into manageable cartridge segments that are easier to handle than long continuous hair extensions. Each cartridge is self-contained and organized, preventing tangling while maintaining compact storage. The segmented design allows stylists to quickly access and switch between different hair colors and lengths without the difficulty of sorting and handling loose pre-cut wefts.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS12514317B1Continuous weft hair extension dispensing device and components thereof

Publication Date: 2026.01.06 BOWDEN CONSULTING LLC

AI summary

A device for storing a weft hair extension includes a base, a spool with a body having an outer surface around which the weft hair extension is wrapped, and a basin positioned below the spool and configured to receive ends of the strands of hair of the weft hair extension held by the spool, such that the ends of the strands of hair are contained within the basin.