Fabric Dyeing with Controlled pH for Random Pattern Formation
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Solution Overview
Problem
Conventional dyeing methods for producing carpet and carpet tiles result in uniform, consistent appearances, making it expensive to create unique patterns and designs, as they require specialized machinery and controlled conditions.
Innovation Solution
A process involving immersing fabric in an aqueous liquid dyeing bath at an elevated temperature and acidic pH, introducing anionic dye at a controlled rate, which allows for random dye migration and unique pattern creation without the need for specialized machinery or user-provided designs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional dyeing methods are used to ensure uniform dye distribution and constant color, then manufacturing precision and reliability are improved, but design versatility and adaptability deteriorate
Solution Approach 1:
The patent applies dynamics by transitioning from static, controlled pH conditions to dynamic pH fluctuation. The pH value is intentionally varied during the dyeing process to create random dye migration patterns, transforming a static uniform dyeing process into a dynamic pattern-forming process. This resolves the contradiction by making the dyeing system adaptive rather than purely precision-controlled.
Solution Approach 2:
The patent changes the pH parameter from a constant controlled value to a fluctuating variable. By adjusting pH levels during the dyeing process, the dye's migration behavior changes, enabling pattern formation while maintaining dye uptake. This parameter change allows the system to achieve both uniform dye absorption and unique visual patterns.
2Adaptability or versatility
If specialized machinery is used to produce patterned carpets, then design versatility is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent applies self-service by allowing the dyeing system to automatically generate patterns through controlled pH fluctuation and dye diffusion, without requiring external pattern transfer mechanisms or specialized equipment. The fabric itself becomes the medium for pattern formation through chemical-physical processes, eliminating the need for complex mechanical pattern application devices.
Solution Approach 2:
The patent replaces mechanical pattern transfer systems with a chemical-physical process. Instead of using mechanical means to apply patterns (such as screen printing or digital printing machinery), the invention uses pH-controlled dye migration and diffusion to create patterns automatically, substituting a complex mechanical system with a simpler chemical process.
3Manufacturing precision
If pH is controlled to ensure even dye absorption, then manufacturing precision is improved, but design flexibility deteriorates
Solution Approach 1:
The patent applies periodic action by introducing controlled pH fluctuations during the dyeing process. The pH value is varied in a periodic or semi-periodic manner, creating cycles of dye migration and settling that result in layered visual effects. This periodic pH action maintains sufficient dye absorption while generating diverse visual patterns through repeated cycles of concentration and diffusion.
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 the production of unique, non-repeating dye patterns and varying appearances using conventional dyeing machines, reducing production costs and increasing design flexibility.
Implementation Method 1
the random migration of the dye in the aqueous liquid dyeing bath can produce dye patterns having differing, random levels of dye depth of the dye color
Implementation Method 2
contacting the dyeable fibrous material with the dye solution for a dyeing period sufficient to dye at least a portion of the dyeable fibrous material
Data Source
AI summary
In one aspect, the invention relates to methods for dyeing greige goods to produce a random dye pattern, compositions and articles produced therefrom. In a further aspect, the invention relates to methods of methods for dyeing greige goods to produce a random dye pattern using a dyeing machine. In still a further aspect, the invention relates to methods of producing unique dye patterns for greige goods. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.