Wick Strand Color Patterning With Tensioned Spray Application
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Solution Overview
Problem
Existing methods for coloring wick strands made of loosely assembled hair and fibers require frequent cleaning of relief pressure rollers and are limited in the number of dyeings per hair, leading to suboptimal quality and efficiency.
Innovation Solution
A device with a transport wheel and guideway system that applies tension to the wick strand, combined with a contactless coloring mechanism using spraying nozzles, allowing for precise and increased color application without physical contact, enabling multiple dyeings per hair and preventing color loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If relief pressure rollers are used for printing, then the pattern can be applied to the wick strand, but frequent cleaning is necessary to maintain quality standards
Solution Approach 1:
The invention extracts the harmful contact between the printing device and the wick strand by replacing relief pressure rollers with a spray application device. The color is applied through a spray nozzle that does not physically touch the wick strand, eliminating the contamination and cleaning requirements associated with contact-based relief printing while maintaining pattern application quality.
2Manufacturing precision
If the number of dyeings per hair is increased, then the quality level of the finished cloth improves, but technological limits are reached with prior methods
Solution Approach 1:
The invention replaces the mechanical relief pressure roller system with a spray-based application device. This substitution allows for precise control of color application through spray parameters (pressure, nozzle distance, spray pattern) rather than mechanical pressure, enabling multiple dyeings per hair without the technological constraints of the mechanical system.
3Loss of time
If contactless color application is used, then cleaning frequency is reduced, but the precision of pattern application may be compromised
Solution Approach 1:
The invention uses a spray nozzle system that applies color through a fluid (spray) mechanism. The spray is directed onto the wick strand with precise control over spray pressure, nozzle-to-strand distance, and spray pattern, achieving accurate pattern application without physical contact. This pneumatic/hydraulic approach maintains precision while eliminating the cleaning issues associated with contact-based mechanical printing.
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 device enables precise and efficient application of multiple colors to wick strands, reducing the need for frequent cleaning and increasing the number of dyeings per hair, while ensuring full color absorption and maintaining high-quality patterns.
Implementation Method 1
the transport device has a delay device, which puts the wick strand moved by the transport device under tension. The tensile stress or prestressing of the wick strand achieved by means of the retarding device causes the wick strand to rest snugly on the transport device, as a result of which a certain strength is achieved in the application zone
Implementation Method 2
the coloring device is designed for applying, preferably spraying, color onto and/or into the wick strand, without any physical contact between the wick strand and the coloring device being provided for this purpose
Implementation Method 3
the applied color is fully adsorbed by the yarns, which means that there is no loss of color
Data Source
Figure 1~4
AI summary
Device for the superimposition of color patterns onto at least one candlewick thread (1) from loosely jointed or thread-like spun hairs and/or fibers and/or textiles with a dyeing device (2) and a transport device (3) for the movement of the candlewick thread relative to the dyeing device, with the device having a delay mechanism (4) that staggers the candlewick thread (1) that is moved by the transport device by means of nominal tensile stress.