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Screen printing ink for mobile phone and computer back cover
Professional Screen Printing Ink Solutions for Mobile Phone, Tablet and Laptop Back Cover
Summary:
With the signal transmission requirements imposed by 5G communication technology and the consumer electronics industry’s trend toward thinner and lighter designs, PC/PMMA composite sheets and PET anti-shatter films have become the mainstream choice for mobile terminal back covers. This article provides an in-depth analysis of screen printing ink solutions designed for high-pressure forming, boiling-water resistance and high adhesion requirements, covering the three major core series — mirror silver, release and solid color — to help enhance the aesthetic quality of finished products and mass production stability.
1. Industry Trends, Materials and Process Background
In the consumer electronics sector, in pursuit of a glass-like warm and smooth tactile feel while satisfying wireless charging and 5G signal requirements, PC/acrylic (PMMA) composite sheets and coated PET anti-shatter films are now widely adopted in the back covers of mobile phones, tablet PCs and notebook computers.
Leveraging advantages such as thick ink deposits, high color saturation and strong process flexibility, the screen printing process plays an essential role in back cover logo decoration, functional masking and base color coating. Targeting the stringent downstream processes, including 3D high-pressure forming (IMT/IMD), CNC precision machining and demanding reliability testing, we introduce a high-performance, two-component solvent-based ink series.
2. Core Product Lines: Technical Advantages and Application Analysis
2.1 Mirror Silver Series
Core Models: JM-1800H / JM-1900H (for composite sheets); JM-2300 (for PET anti-shatter film)
Technical Characteristics: This series adopts nano-scale metallic powders, delivering exceptional flatness and gloss.
Performance Advantages:
· High brightness without mirror dulling: Perfectly simulates the metallic reflective effect of vacuum aluminum/chrome plating.
· Printability: Excellent screen passing property ensures fine-line printing without jagged edges or pinholes.
· Post-processing resistance: After downstream high-pressure forming, the mirror reflectance remains at a high level, with no cracking or darkening.
2.2 Release Ink Series
Core Models: HF-HEA (flexible type) / HF-TW (high-durability type)
Technical Characteristics: A two-component functional ink specifically developed for UV transfer processes, balancing surface energy control and adhesion response.
Performance Advantages:
· Stable surface energy: Dyne level is consistently maintained above 38 dyn/cm, ensuring an optimal balance between UV adhesive wetting and release performance.
· Processing toughness: HF-HEA provides excellent elongation, making it suitable for complex curved-surface forming; HF-TW features enhanced alcohol rubbing resistance and boiling-water resistance.
2.3 Solid Color / Opaque Ink Series
Core Models: HF-8800 / HF-WTS series
Technical Characteristics: A full-color-range solution with high hiding power and high adhesion, compatible with both coated and uncoated substrates.
Performance Advantages:
· Multi-substrate compatibility: Perfectly compatible with PC/PMMA composite sheets, coated PET and various plain films.
· Outstanding hiding power: Achieves full light-blocking effect with an extremely thin ink layer, contributing to thinner end-product designs.
· Reliability performance: The cured ink film is dense and easily passes cross-cut adhesion tests, alcohol rub tests and rigorous constant-temperature, constant-humidity water-boil tests.
3. Rigorous Process Adaptability and Quality Assurance
All products in the series comply with halogen-free environmental requirements and are deeply optimized for modern electronics manufacturing workflows:
· Formability: Suitable for 3D high-pressure forming; the ink film does not crack or peel.
· Cutting performance: Capable of withstanding CNC high-speed cutting processes, delivering clean edges without chipping.
· Process window: Offers wide-ranging drying conditions and dilution ratios, adapting to screen printing and pad printing operations in different environments.
4. Conclusion
As a professional ink supplier, we not only provide high-quality consumables, but also are committed to delivering comprehensive technical support to mobile phone and computer back cover manufacturers — covering everything from material selection and process debugging to mass production assurance. For detailed Technical Data Sheets (TDS) or to request sample testing, please contact our Technical Application Center.
Mobile Back Cover Ink, Composite Sheet Screen Printing, Mirror Silver Ink, 3D High Pressure Forming