Ink Composition for Wet Glass Marking via Silane Resin
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Solution Overview
Problem
Current ink compositions for continuous deflected jet printing on glass or plastic bottles fail to meet the criteria of rapid drying, wet rub resistance, solubility in alkaline solutions, and long-term property persistence, especially under humid and hot conditions, and are not suitable for marking returnable glass bottles containing carbonated drinks.
Innovation Solution
A liquid ink composition with less than 0.5% water and alcohols by weight, containing insoluble dyes or pigments and a binder resin derived from a reaction between alkoxysilane and hydroxyaromatic resin, specifically hydroxyphenolic resin, which provides excellent adhesion and solubility in alkaline solutions, and maintains properties over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional ink compositions are used for continuous deflected jet printing on glass bottles, then the marking process can be performed, but the ink fails to achieve rapid drying, wet rub resistance, and long-term property persistence
Solution Approach 1:
The patent changes the chemical parameters of the ink composition by using a specific binder resin derived from the reaction between an alkoxysilane and a hydroxyaromatic resin, along with controlled amounts of water and alcohols. This chemical parameter change enables the ink to achieve rapid drying, wet rub resistance, and long-term property persistence while maintaining compatibility with continuous deflected jet printing processes.
Solution Approach 2:
The patent employs a composite binder resin system formed by the reaction between alkoxysilane and hydroxyaromatic resin. This composite material combines the adhesion properties of silane with the hydrophobic and durability characteristics of hydroxyaromatic resin, creating a marking composition that simultaneously achieves rapid drying, wet rub resistance, and alkaline solubility for returnable bottle applications.
2Strength
If the ink is designed to adhere strongly to glass surfaces, then marking quality improves, but the ink becomes difficult to remove during washing of returnable bottles
Solution Approach 1:
The patent applies local quality by designing the binder resin to exhibit different properties under different conditions: under drying conditions, the silane-hydroxyaromatic resin composite provides strong adhesion to glass surfaces, while under alkaline washing conditions, the same composite becomes soluble and allows easy removal of the marking. This conditional property differentiation resolves the contradiction between strong adhesion and easy removability.
3Stability of the object's composition
If the ink contains high levels of water and alcohols for solubility, then the ink remains stable during circulation, but drying time increases and wet rub resistance decreases
Solution Approach 1:
The patent optimizes the water and alcohol content parameters to specific ranges (water: 0.1-5% by weight, alcohols: 0.1-5% by weight) rather than using high concentrations. This parameter optimization maintains sufficient ink stability during circulation while enabling rapid drying and wet rub resistance. The specific binder resin composition compensates for the reduced solvent content, ensuring both stability and drying performance.
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 ink composition achieves rapid drying, excellent adhesion to wet surfaces, resistance to rubbing and immersion in water, and easy removal in alkaline solutions, while maintaining stability and quality over extended storage periods.
Implementation Method 1
The binder, comprising at least 50% by weight, relative to the total weight of the binder, of at least one binder resin capable of being prepared by reaction between at least one alkoxysilane and at least one hydroxyaromatic resin
Implementation Method 2
binder resin capable of being prepared by reaction between at least one alkoxysilane and at least one hydroxyaromatic resin
Implementation Method 3
The piezoelectric crystal, vibrating at a given frequency, causes pressure disturbances in the inkjet, which oscillates and gradually breaks up into spherical droplets
Implementation Method 4
An electrode, placed in the path of the jet, where it breaks up, makes it possible to give these drops an electrostatic charge, if the ink is conductive. The drops thus charged are deflected in an electric field and allow the printing.
Data Source
AI summary
Ink composition for continuous deflected jet printing, that is liquid at ambient temperature, comprising a solvent containing less than 0.5% by weight of water and less than 0.5% by weight of alcohols relative to the total weight of the ink composition; one or more dye(s) and/or pigment (s) that is (are) insoluble in water, and in mixtures of water and of at least one alcohol; and a binder, comprising at least 50% by weight, relative to the total weight of the binder, of at least one binder resin capable of being obtained by reaction between at least one alkoxysilane and at least one hydroxyaromatic resin. Process for preparing this ink composition. Process for marking substrates, supports or objects by spraying this ink composition onto these substrates, supports or objects. Substrate, support or object such as a glass bottle provided with a marking obtained by drying and/or absorption of the ink composition.