Eco Waterbased Screen Printing Ink
Eco Waterbased Screen Printing Ink is an environmentally friendly ink that uses water as the main solvent. It achieves a balance between high performance and sustainability through innovative formulation and process design.
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Product Introduction
Additive system
pH stabilizer: maintains the pH value of the ink at 8.0-9.5 to prevent abnormal changes in viscosity.
Thickener: such as cellulose ethers or polyurethanes, adjusts rheological properties to prevent flow during printing.
Slow-drying agent: controls the drying speed to prevent screen clogging. The amount usually does not exceed 10% of the total ink volume.
Optimization of printing conditions
Screen selection: 40-100T polyester screen is recommended. For high-precision printing (such as dots), 200-300T mesh can be used with 65-70 degree polyester squeegee.
Equipment compatibility: Compatible with traditional screen printers, but infrared drying module needs to be installed to improve efficiency. Some inks support wet-on-wet printing to reduce downtime.
Environmental control
Temperature and humidity management: The ideal environment is 20-25℃ and 50%-60% humidity. Excessive humidity may cause delayed drying or color smearing.
Cleaning and maintenance: The equipment can be cleaned with clean water or weak alkaline solution to avoid organic solvent residue and reduce maintenance costs.
Quality control
Viscosity adjustment: Before printing, the viscosity needs to be measured with a coating - 4 cup (20-60 seconds/25℃). If necessary, add water or thickener to adjust.
Curing test: Confirm adhesion through peel test (3M tape method) to ensure that the ink is fully cross-linked and cured.
Screen Printing Ink
FAQ:
What are the differences in the printing process of this water-based ink on textiles and metal materials? What parameters need special attention?
Textile printing needs to focus on feel and breathability. It is recommended to use a 40-80T screen with a 65-degree soft squeegee. After printing, it is naturally dried for 30 minutes or dried with 80℃ hot air for 10 seconds to avoid high temperature causing fiber embrittlement; metal printing needs to enhance adhesion, and a 100-150T high-tension screen needs to be selected. The substrate needs to be phosphated before printing, and the drying temperature is increased to 120-150℃ to promote resin cross-linking, and the salt spray performance needs to be tested (such as the GS-07 model can pass the 500-hour salt spray test). The key parameter differences are: textile printing controls the pH value of 8.0-8.5 to prevent dye bleeding, and metal printing needs to adjust the viscosity to 40-50 seconds (coating - 4 cups) to avoid sagging.
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