Water-Based Polychromatic Heat Transfer Labels for Dye-Migration Resistance
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Solution Overview
Problem
Existing heat transfer labels with reflective polychromatic effects suffer from poor wash-fastness, dye migration, and environmental unfriendliness, lacking robustness and requiring dye blockers.
Innovation Solution
A heat transfer label with a polychromatic effects design layer formulated from a water-based ink containing 1-25% polychromatic pigment, which includes a carrier, optional back-up and adhesive layers, and undergoes heat and pressure application to transfer a durable polychromatic feature onto various substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If reflective polychromatic effects labels are used, then color effect is achieved, but wash-fastness deteriorates
Solution Approach 1:
The patent uses a composite ink formulation combining polychromatic effects pigment with specific binders and additives to create a multi-layered material structure that maintains color vibrancy while providing durability against washing, abrasion, and dye migration
Solution Approach 2:
The patent optimizes pigment concentration parameters (1-25% by weight) and ink composition ratios to achieve the desired balance between polychromatic visual effects and wash-fastness performance, transforming the material properties through controlled parameter adjustments
2Illumination intensity
If reflective polychromatic effects labels are used, then color effect is achieved, but dye migration resistance deteriorates
Solution Approach 1:
The patent introduces intermediary substances including binders and barrier layers that act as mediators between the polychromatic pigment and the fabric substrate, preventing direct interaction that causes dye migration while maintaining the visual polychromatic effects
Solution Approach 2:
The composite ink system incorporates multiple functional components that work together to trap and secure the polychromatic pigment particles, preventing their migration to surrounding fabrics while preserving the intended optical effects
3Illumination intensity
If solvent-based inks are used, then polychromatic effects are achieved, but environmental friendliness deteriorates
Solution Approach 1:
The patent fundamentally changes the solvent parameter from organic solvents to water-based formulations, maintaining the polychromatic effects performance while eliminating the environmental harm associated with solvent-based inks
4Illumination intensity
If polychromatic pigment concentration is increased, then color robustness is improved, but ink formulation complexity increases
Solution Approach 1:
The patent establishes optimized parameter ranges for pigment concentration (1-25% by weight) that achieve robust polychromatic effects without requiring excessively complex ink formulations, balancing performance 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 label exhibits robust reflective polychromatic effects, resisting dye migration, maintaining color integrity through 60°C washes, and passing crock and abrasion tests, while being environmentally friendly.
Implementation Method 1
The polychromatic effects feature exhibits robust polychromatic effects on the apparel item
Implementation Method 2
The polychromatic effects heat transfer label is transferred from the carrier to an apparel item
Data Source
AI summary
A polychromatic effects heat transfer label includes a carrier and a polychromatic effects design layer on the carrier. The polychromatic effects design layer is formulated from an ink having a polychromatic effects pigment present in a concentration of about 1 percent to about 25 percent by weight of the ink. The polychromatic effects heat transfer label is transferred from the carrier to an apparel item as a polychromatic effects feature and the polychromatic effects feature exhibits robust polychromatic effects on the item. The polychromatic effects feature exhibits no adhesion failure, no color change, no stain, and no visual change after being subjected to a Nike standard embellishment durability wash tests of an accelerated wash, 5 times at a temperature of 60° C. and an innovation standard wash, 15 times at a temperature of 60° C., and being tumbled dry after each wash and exhibits no color transfer, no abrasion and no visual change after being subjected to an AATCC standard crock test, 10 crocks with an SDLATLAS CM-5 AATCC crockmeter and an TIC crockmeter using 2″×2″ squares. Polychromatic effects heat transfer labels for transfer to plastic, carbon fiber and metal are disclosed.