KDD VA410H Water-Based High-Temperature Ink Adjusting Oil – Special Product Solution for Glass Screen Printing

Product Positioning: A high-thixotropy, water-washable and eco-friendly sintered ink binder specially designed for high-temperature glass screen printing. It targets core industry pain points including screen clogging, poor dispersion of inorganic black powder, sagging and edge blurring, difficult cleaning and weak adhesion, and adapts to mass-production screen printing working conditions.

I. Application Scenarios

1. Applicable Products

Home appliance tempered glass sintered ink, color crystal glass screen printing slurry, glass high-temperature decorative ink.

2. Applicable Working Conditions

Screen printing for induction cooker and ceramic cooker panel glass as well as tempered decorative glass; compatible with 500~700℃ high-temperature sintering process, continuous mass screen printing, and mass production conditions requiring frequent screen cleaning during production.

3. Core Industry Pain Points (Disadvantages of Traditional Products)

Traditional water-based high-temperature ink binders have poor adaptability and cause multiple problems in production and final product application: First, poor wetting and dispersion capacity for inorganic black powder leads to easy agglomeration, floating and precipitation of black powder, resulting in uneven printing color and inconsistent blackness. Second, insufficient thixotropy causes sagging during printing, leading to severe edge blurring and sawtooth defects on fine patterns and low yield rate. Third, dried screen ink cannot be cleaned with clean water and requires organic solvents, resulting in high environmental protection costs and heavy workshop hazardous waste pressure. Fourth, high pre-baking temperature and long baking time lead to high production energy consumption and low line efficiency. Fifth, the coating has weak bonding force with the substrate after high-temperature sintering, poor acid, alkali and solvent resistance, and is prone to powder falling and cracking, as well as edge bursting and ink peeling during glass cutting and polishing deep processing.

II. Core Technical Solution

1. Applicable Substrates

High borosilicate tempered glass, color crystal glass, home appliance microcrystalline glass.

2. Coating Resin System

Adopts VA410H water-soluble acrylic high-temperature ink adjusting oil, a yellow transparent low-odor liquid with a viscosity of 28~48s at 25℃ standard environment. It adopts an alcohol ether eco-friendly solvent system with benzene-free and low VOC features. Specially adapted to high powder-oil ratio sintered ink with a recommended powder-oil ratio of 100:25~30, meeting the formula requirements of high black powder filling.

3. Curing and Baking Conditions

Low-temperature fast pre-baking: 150~180℃ × 3~5min to quickly remove internal moisture of the ink; followed by 500~700℃ high-temperature sintering to achieve stable film formation with dense and firm coating.

4. Core Key Performances

(1) Excellent Powder Wetting and Dispersion: The molecular structure is equipped with exclusive wetting and dispersion groups for inorganic black powder, enabling rapid and full infiltration of black powder and completely eliminating powder agglomeration, floating and delamination. Formulas with high filling volume have no precipitation during long-term storage, delivering uniform and full printing blackness and excellent color consistency.

(2) Superior Substrate Adhesion: After high-temperature sintering, the resin fully fuses with the glass substrate and glass frit to form an integrated dense film. No powder falling or edge bursting occurs after cutting, polishing and mechanical impact tests, and no peeling or shedding happens under thermal shock environments, adapting to the whole glass deep processing procedure.

(3) Highly Stable Thixotropic Performance: Adopts a high shear thinning thixotropic system. The viscosity decreases under shear force during printing for smooth screen penetration; it thickens rapidly after standing to effectively prevent printing sagging, ensuring fine precision patterns free of plate blurring and sawtooth defects and meeting high-precision screen printing requirements.

(4) Water-Washable Screen Plate: Full water-soluble eco-friendly system. Dried ink on the screen within 3 hours after shutdown can be thoroughly rinsed with clean water without any residue or caking on the screen mesh. No organic solvents such as acetone and ethanol are required, greatly reducing environmental governance costs and workshop safety risks.

III. Product Solution Comparison (VS Traditional Water-Based High-Temperature Binder)

IV. Product Conclusion & Selection Suggestions

1. Product Conclusion

KDD VA410H is a dedicated water-based ink adjusting oil developed for glass high-temperature sintered ink. It optimizes exclusive wetting and dispersing molecular structure for inorganic black powder color matching systems and adopts core high-thixotropy water-based modification technology, solving five major industry pain points at one time: inorganic black powder agglomeration and floating, fine line blurring and sawtooth defects in screen printing, difficult screen cleaning after ink drying, excessive pre-baking energy consumption and poor bonding force after high-temperature sintering. The product supports fast short-time pre-baking at 150~180℃, features full water screen cleaning, low odor, eco-friendly and residue-free performance with no ash residue after high-temperature sintering, and delivers excellent acid, alkali and solvent resistance. The coating withstands harsh deep processing technologies including cutting, polishing and thermal shock without powder falling, delamination or edge bursting. Its comprehensive screen printing processing performance and finished product protection performance fully surpass traditional water-based high-temperature binders.

2. Selection Suggestions

Priority adapted to high-temperature screen printing black ink and high-temperature decorative slurry systems for home appliance microcrystalline panels and color crystal tempered glass; especially suitable for mass continuous screen printing, frequent color change and screen cleaning, export environmental protection standards, fine precision printing, deep processing requiring cutting and edging, and mass production scenarios of glass sintered ink with high-proportion inorganic black powder formula.

V. Enterprise Professional Endorsement

KDD focuses on the research, iteration and application of water-based high-temperature glass ink binders and water-soluble acrylic functional resins, specializing in high-temperature sintering materials for home appliance and decorative glass. We have mature product formula systems and a large number of mass production application cases. We can provide customized formula development, free sample testing and bulk supply services according to customers’ process requirements. With low VOC and benzene-free features, our products fully comply with RoHS, REACH and other international industry standards, meeting export environmental protection requirements for various products.

VI. FAQ

Q1: What is the dispersion effect of VA410H with high-proportion inorganic black powder? Will precipitation or blooming occur?

A: The product is equipped with modified exclusive black powder wetting and dispersing groups to rapidly infiltrate and evenly disperse inorganic black powder and fundamentally avoid powder agglomeration. Under high filling ratio conditions, no obvious delamination, precipitation, floating or blooming occurs after 24-hour ink standing. The printed finished product has uniform and consistent blackness, with no screen clogging or line breaking during long-term continuous machine printing, ensuring extremely high printing stability.

Q2: Can dried ink on the screen after long equipment shutdown be thoroughly cleaned only with clean water?

A: Complete cleaning is achievable. VA410H adopts a full water-soluble eco-friendly system without oily residue or insoluble components. Ink dried on the screen within 3 hours after shutdown can be completely removed by direct clean water flushing without soaking or organic solvents, leaving the screen mesh unobstructed and residue-free. It greatly reduces workshop hazardous waste generation, environmental treatment costs and manual cleaning costs.

Q3: Will the coating peel or burst at the edge after cutting and polishing following short-time 150~180℃ pre-baking and high-temperature sintering?

A: No powder falling, edge bursting or peeling will occur. The 150~180℃, 3~5min pre-baking process can completely remove internal ink moisture and ensure stable early-stage coating drying. Meanwhile, the product resin system has a highly matched thermal expansion coefficient with glass frit, enabling integrated fusion with the glass substrate after high-temperature sintering and forming a stable and dense film structure. It passes strict tests including cutting, edging and high-low temperature thermal shock, fully adapting to the whole glass deep processing workflow.

Service Support: Feel free to contact us for detailed technical parameters, sample testing, customized formula development and supporting process solutions.