Textile Indicator Field Using Wash-Fastness Color Change
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Solution Overview
Problem
Existing textile products, such as cleaning cloths and bed linen, face challenges in determining the end of their useful life due to gradual degradation, making it difficult for users and sales consultants to assess when replacement is necessary, especially as color changes can be subtle and require expensive measuring devices or regular checks.
Innovation Solution
A textile product with an indicator field featuring two areas with different wash fastness properties, where a first color with inferior wash fastness gradually changes to a second color, allowing for simple visual identification of the end of service life through a relative color change, using standard washing processes and detergents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multi-layer structure with different color layers is used to indicate service life through color change, then the service life indication function is provided, but the cost increases and special measuring devices are required
Solution Approach 1:
The patent applies color change principle by using a single color that changes over time during the service life of the textile product. The color serves as a visual indicator of degradation and service life status, eliminating the need for complex multi-layer structures and special measuring devices while maintaining reliable service life indication functionality.
2Measurement precision
If special measuring devices are used to detect color changes, then measurement precision is improved, but the cost and device complexity increase
Solution Approach 1:
The patent uses a color that undergoes noticeable changes during the service life of the textile product, allowing users to visually assess degradation without requiring special measuring devices. The color transformation is designed to be perceptible to the human eye, providing sufficient measurement precision for service life determination while eliminating complex detection equipment.
3Device complexity
If a color scale is used for visual checking, then the cost of measuring devices is reduced, but the color scale can easily get lost and regular checks are required
Solution Approach 1:
The patent merges the service life indication function directly into the textile product by incorporating a color-changing material within the product itself. This integration eliminates the need for separate color scales or external reference materials that can be lost, allowing users to continuously monitor service life without requiring additional components or regular external checks.
Solution Approach 2:
The textile product performs self-monitoring of its service life through the integrated color-changing material. The product automatically indicates its degradation state and service life status without requiring external tools, reference materials, or active user intervention, thereby improving ease of operation and user convenience.
4Duration of action of moving object
If gradual color changes are used to indicate service life, then the service life progression is reflected, but users hardly notice the changes and the end of service life can be missed
Solution Approach 1:
The patent employs a color transformation that progresses through distinct stages during the service life of the textile product, with the final stage providing a clearly visible indication of service life exhaustion. The color change is designed to be perceptible and noticeable to users, ensuring that the end of service life is easily detected without requiring special equipment or expertise.
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
Enables straightforward visual determination of the end of the useful life, ensuring timely replacement without the need for specialized equipment, as the first color approaches the second color after multiple washes, providing clear indication of service life exhaustion.
Implementation Method 1
the wash fastness of the first color is inferior to the wash fastness of the second color. There is thus a relative change between the color of the first area and the color of the second area over the course of the service life and the associated washing processes
Data Source
Figure 1
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AI summary
In an arrangement for indicating an intended end of the period of use of a textile product (1), the textile product (1) or a label (2) of the textile product (1) has an indicator field (3) which, in a first area (3a), has a first colour that changes during the period of use of the textile product (1) and in the course of the associated washes. The indicator field (3) additionally has a second colour in a second area (3b), wherein the wash-fastness of the first colour is less than the wash-fastness of the second colour, and the first colour differs, in the delivery state, from the second colour and, over a number of washes of the textile product (1), increasingly approximates to the second colour.