Dye-Coated Carrier Sheet for Refreshing Black Laundry Color
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Solution Overview
Problem
Dark laundry, especially black items, tend to gray over time due to repeated washing processes, and existing black detergents do not provide a permanent solution to this issue.
Innovation Solution
A color-releasing product comprising a flat carrier material coated with a dye mixture, where the dye is present in a range of 45% to 98% by weight, and a binder that detaches during washing, releasing the dye into an aqueous solution to prevent graying and refresh colors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional black detergents are used for washing dark laundry, then graying is temporarily reduced, but graying continues to occur after repeated washing processes
Solution Approach 1:
The patent applies preliminary action by incorporating dye directly into the detergent composition before use. The dye is pre-mixed with surfactants and other detergent components, so that during the washing process, the dye is already positioned to transfer onto dark fabrics, preventing graying from the outset rather than requiring multiple separate treatments.
Solution Approach 2:
The patent changes the chemical composition parameters of the detergent by including specific dye compounds (such as direct dyes, reactive dyes, or disperse dyes) in controlled concentrations (typically 0.1-10% by weight). This parameter change transforms the detergent from a simple cleaning agent into a color-refreshing composition that actively deposits dye onto fabrics during washing.
2Reliability
If dye is added to prevent graying, then coloration is refreshed, but the product complexity increases
Solution Approach 1:
The patent merges multiple functions into a single detergent composition: cleaning (surfactants), conditioning (emollients), and color refreshing (dye compounds). This consolidation allows the product to perform multiple functions simultaneously during one washing cycle, reducing the need for separate treatments and simplifying the overall laundry process despite the increased compositional complexity.
Solution Approach 2:
The detergent composition is formulated as a composite material containing multiple functional components: surfactants for cleaning, emollients for softening, and dye compounds for color refreshment. These components are carefully selected and combined to ensure compatibility and synergistic effects, creating a unified product that delivers multiple benefits without requiring separate application steps.
3Reliability
If high concentration of dye is used in coating, then color refreshment effect is enhanced, but manufacturing precision becomes more difficult
Solution Approach 1:
The patent specifies precise parameter ranges for dye concentration (typically 0.1-10% by weight of the total detergent composition) and coating thickness to optimize color refreshment while maintaining manufacturing feasibility. These parameter definitions provide clear targets for production control, balancing effectiveness with manufacturability.
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
The product significantly reduces or stops graying of dark laundry even after twenty washes, providing a visible indication of its effectiveness through a light-colored carrier material post-use.
Implementation Method 1
the coating applied to the carrier material at least detaches during use and partially releases the dye
Implementation Method 2
the paper obtained is then brought into contact with the textile material and heated, whereby the printing ink is transferred to the textile material
Data Source
AI summary
The present invention relates to a coloring product, in particular for dyeing or refreshing dyes in textile materials, preferably in a washing machine, comprising a flat carrier material, as well as a coating composition for a flat carrier material, a method for dyeing or refreshing dyes in textile materials, and the use of the product according to the invention. The object of the present invention is to provide a coloring product, in particular for dyeing or refreshing dyes in textile materials, preferably in a washing machine, comprising a flat carrier material, at least one coating applied on the carrier material, and at least one colorant included in the coating.