Water-based printing ink compositions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing inks for personal care products, particularly those exposed to moisture, chemicals, and abrasion, are dominated by solvent-based compositions that are not environmentally friendly, and formulations with high natural material content fail to achieve adequate adhesion, moisture resistance, and chemical resistance.
Innovation Solution
Development of water-based ink and coating compositions comprising greater than 70 wt% natural materials, including natural resins, water, and bio-solvents, which exhibit moisture, chemical, and abrasion resistance, suitable for printing on cotton and synthetic materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solvent-based inks are used, then adhesion and moisture resistance are achieved, but environmental friendliness deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters by replacing petroleum distillates with water as the primary solvent and using naturally derived materials (rosin esters, waxes, oils) for binders and additives. This substitution maintains functional performance while eliminating harmful volatile organic compounds, directly resolving the contradiction between reliability and environmental harm
Solution Approach 2:
The ink composition employs a composite formulation combining multiple natural materials including water, natural resins (rosin esters), natural waxes, plant oils, and natural pigments. This composite approach synergistically achieves adhesion, moisture resistance, and chemical resistance previously only attainable with synthetic solvents, while maintaining environmental compatibility
2Object-affected harmful factors
If high amounts of naturally derived materials are used, then environmental friendliness is improved, but adhesion and moisture resistance deteriorate
Solution Approach 1:
The patent formulates a composite system where naturally derived materials work synergistically: rosin esters provide adhesion and film formation, waxes contribute to moisture barrier properties, plant oils enhance flexibility and bonding, and natural pigments provide coloration. This composite natural material system achieves performance previously only possible with synthetic components
Solution Approach 2:
The patent optimizes the concentration ratios and molecular weight characteristics of natural materials to achieve desired performance. Specifically, it uses modified rosin esters with controlled molecular weights and functional groups, adjusts the ratio of binding agents to solvents, and selects natural materials with specific properties to ensure adequate adhesion and moisture resistance while maintaining high natural material content
3Object-affected harmful factors
If water-based formulations are used, then environmental friendliness is improved, but performance in moisture-exposed applications deteriorates
Solution Approach 1:
The patent modifies the water-based formulation by incorporating hydrophobic natural materials such as waxes and modified rosin esters that create a water-resistant barrier. The molecular structure of these natural materials is selected to provide water repellency while maintaining the water-based nature of the formulation, thus achieving both environmental friendliness and moisture resistance
Solution Approach 2:
The ink combines water-soluble natural binding agents with water-insoluble natural materials (waxes, oils, resins) to create a composite system where the hydrophobic components provide moisture resistance while the hydrophilic components ensure proper application and drying from water-based vehicle
Data Source
AI summary
The present invention provides water-based ink and coating compositions comprising greater than 70 wt % natural materials. The ink and coating compositions of the present invention are suitable for printing on feminine care products, baby care products, and other personal care products.