Advantages of CROWN Acrylic Foam Tape (EPT) for Smartphone Frame Bonding

As electronic devices continue to evolve toward thinner profiles, higher integration, and greater reliability, smartphone structural design is also undergoing continuous upgrades. As a key part of the overall device structure, smartphone frame bonding often involves multiple substrates such as metal, glass, and plastics. The significant differences in surface energy between these materials create greater challenges for bonding. Meanwhile, smartphones must withstand drop impacts and long-term vibration during daily use, placing higher demands on the impact resistance and structural reliability of adhesive materials.

To address these application requirements, CROWN provides acrylic foam tape solutions, including the NC8XXXB series and NC9XXXB series PET-reinforced acrylic foam tapes, delivering stable and reliable bonding performance for smartphone frame bonding and electronic component fixation.

The NC8XXXB series uses high-quality acrylic foam as the carrier with high-performance acrylic adhesive coated on both sides. These products offer strong bonding, excellent vibration resistance, sealing, and compressibility, so they can absorb external impacts and provide reliable cushioning. In addition, the series features strong dynamic bonding strength and push-out resistance, ensuring stable adhesion of structural components under vibration and impact conditions.

The NC9XXXB PET-reinforced acrylic foam tape series integrates a PET reinforcement layer within the foam structure. While maintaining the excellent bonding performance of acrylic foam tapes, it further improves structural stability and processing performance. The product adopts an A/B side design, allowing easy liner removal without tearing or adhesive residue, facilitating rework. It also provides excellent die-cutting performance, making it suitable for automated manufacturing processes in electronic production lines.

The optimized NC9XXXB-6 series offers improved anti-warping performance, enabling close conformity to curved or irregular surfaces to achieve strong and reliable bonding. In addition, the series demonstrates outstanding aging resistance and can withstand high temperatures, UV exposure, humidity, and solvents, making it suitable for demanding application environments.

With its excellent bonding performance and environmental adaptability, CROWN acrylic foam tapes combine structural reliability with reworkability, making them widely used in smartphone frame bonding and structural component fixation in electronic devices. Leveraging strong R&D capabilities and professional project management, CROWN New Materials provides customized bonding solutions and full-process technical support to help consumer electronics manufacturers achieve high-performance applications and continuous innovation.