HY-2A Water-based Machine-Printable 3D Gloss Varnish: A High-Performance Solution Designed for Thick-Plate Screen Printing‌

In the field of packaging printing, clear and long-lasting 3D effects are key to elevating product quality. The HY-2A water-based machine-printable 3D gloss varnish, introduced by Sanqi International, is specifically developed to meet the stringent demands of machine screen printing on thick plates—balancing quality and efficiency. With its well-balanced and reliable performance, this product provides solid support for high-efficiency production.

‌Core Performance: Meeting Stable Production Requirements‌

HY-2A appears as a fine, milky white paste. Its key parameters are designed pragmatically to ensure smooth printing processes and durable finished products.

• ‌Flexibility and Adhesion‌:
  The product withstands up to 100,000 bending cycles at room temperature and maintains performance at 60,000 cycles even under low-temperature conditions (–20 °C), adapting to various climatic environments and effectively reducing the risk of pattern cracking.

  Explanation: "Bending cycles" refers to repeated flexing tests used to evaluate a coating’s resistance to cracking under mechanical stress. This is especially important for packaging that may be folded or handled frequently during transport or use.
  Similar context: In flexible packaging (e.g., cosmetic boxes or folding cartons), coatings must resist cracking when folded. A high number of bending cycles indicates superior flexibility.

• ‌Physical Strength‌:
  Tensile strength exceeds 3.5 kg, ensuring crisp and well-defined 3D edges of printed patterns remain intact during transportation and daily handling.

  Explanation: "Tensile strength" measures how much pulling force a dried film can withstand before breaking. High tensile strength means the printed layer won’t easily peel or tear.
  Example use case: For luxury gift boxes with embossed logos, high tensile strength prevents edge chipping during shipping.

• ‌Reliable Durability‌:
  Yellowing resistance reaches Grade 4 (on a 1–5 scale), helping printed patterns retain their original color over time. Solid content ranges between 50–55%, offering good 3D build and efficient drying. The product also demonstrates excellent hydrolysis resistance and can withstand hot pressing at 150 °C, facilitating downstream processing.

  Explanation: "Yellowing resistance" is critical for white or light-colored prints exposed to UV light or heat. Grade 4 means only slight discoloration after accelerated aging.
  Typical scenario: Used in display boxes stored under bright retail lighting for long periods.

• ‌Film Formation‌:
  After drying, the coating forms a transparent film that fully reveals the underlying color and gloss, achieving an ideal decorative effect.

  Explanation: Transparency ensures no dulling or cloudiness, preserving design integrity. This is essential for premium packaging where visual clarity is paramount.

‌Excellent Process Compatibility: Enhancing Production Efficiency‌

Designed specifically for machine screen printing on thick plates, HY-2A has been optimized for process compatibility.

• ‌Viscosity‌: Maintained stably between 70,000–83,000 cps, suitable for machine printing requirements such as leveling and mesh passage, contributing to clear pattern reproduction and reduced screen clogging.

  Explanation: Viscosity (measured in centipoise, cps) affects how smoothly ink flows through the screen. Too low = bleeding; too high = poor transfer. This range is ideal for thick-film applications.
  Example: Similar viscosity is used in industrial screen printing for tactile braille or raised logos.

• ‌pH Value‌: Neutral (7.5–8.5), which is gentle on screen meshes and helps extend screen life.

  Explanation: Extreme pH levels can corrode metal screens. A neutral pH reduces maintenance costs and downtime.

• ‌Fineness‌: Controlled below 50 μm, resulting in a smooth print surface with excellent gloss.

  Explanation: "Fineness" refers to particle size in the formulation. Smaller particles yield smoother surfaces and finer detail reproduction.

These characteristics work together to enhance printing stability and overall production efficiency.

‌Environmentally Friendly Water-Based System: Safer to Use‌

Formulated with a water-based system, HY-2A emits low odor and minimal VOCs (volatile organic compounds) during production and application, providing a more comfortable working environment in the workshop. It also aligns with current trends toward green and sustainable manufacturing.

Explanation: VOCs are harmful chemicals released from solvents. Water-based systems significantly reduce these emissions, improving air quality and worker safety.
Regulatory context: Complies with environmental standards such as REACH, RoHS, and GB/T 33372-2020 (China's limit on VOCs in adhesives and coatings).

‌Suitable for Various High-End Packaging Applications‌

This product is ideal for packaging applications requiring prominent 3D texture and premium feel, including:

• Luxury gift boxes
• Tobacco and alcohol packaging
• Decorative elements for electronic products
• Premium labels

It effectively enhances both the visual appeal and tactile experience of the final product.

‌Summary: Key Advantages of HY-2A‌

• Well-balanced and reliable performance, meeting long-term durability requirements
• Parameters optimized for machine screen printing on thick plates, supporting stable and consistent production
• Environmentally friendly water-based formulation, safer for operators and the environment

Sanqi International’s HY-2A is committed to providing printing enterprises with a stable, easy-to-control 3D printing material that enables high-quality results without compromising production efficiency.

For more information or to request sample testing, please contact us.