DS318 Analyzing How DS318 Balances High Adhesion with Thermal Sensitivity Protection EVA hot melt adheisive rolls

[Shenzhen, April 23, 2026] — As 3C electronic products rapidly evolve toward thinner profiles and higher integration, the requirements for bonding materials in packaging and assembly have reached rigorous standards. Shenzhen Tunsing Plastic Products Co., Ltd. (Tunsing), a leading provider of adhesive solutions, today highlights its flagship product specifically engineered for the 3C sector—the DS318 Hot Melt Adhesive Film. With its outstanding performance in battery packaging, mobile power, and precision electronics, DS318 is becoming the preferred solution for improving structural strength and process aesthetics.

DS318 is a thermoplastic hot melt adhesive film based on ethylene synthesis modification technology. It demonstrates excellent compatibility and adhesion across various materials commonly found in 3C products, such as metal casings, plastic frames, wood, and various textiles.

Key advantages include:

• Low-Temperature Activation to Protect Precision Components: The activation temperature for DS318 is set above 75°C, with a melting range of 65-90°C. This allows manufacturers to operate at lower temperatures, effectively avoiding potential heat damage to sensitive electronic components and maintaining battery thermal stability.

• Ideal Viscoelastic Transition: Rheological testing shows that the film transitions from a solid state to a fluid state with excellent wetting properties at approximately 84.2°C. This precise phase change point ensures the adhesive fully penetrates the substrate surface, forming high-strength, bubble-free molecular bonds.

In the high-efficiency 3C supply chain, DS318 helps enterprises achieve production breakthroughs by optimizing processing parameters:

• Rapid Response: The recommended second lamination time is only 8-25 seconds. This significantly shortens the cycle time for automated production lines.

• Physical Stability: A stable proportion of $1.0pm0.02g/cm^{3}$ combined with glassine release paper protection ensures high flatness and non-stick edges during die-cutting and automated pickup processes.

To ensure reliability under the extreme usage environments of 3C products, the Tunsing R&D team conducted multi-dimensional testing using precision instruments like the NETZSCH DSC 214. Tests prove that DS318 has a significant endothermic peak near 80.0°C, ensuring melting uniformity. Its controlled melt flow index (27±10cm³/10min) guarantees high consistency in bonding quality during large-scale production.

Shenzhen Tunsing Plastic Products Co., Ltd. is dedicated to providing high-performance hot melt adhesive solutions for global manufacturing. Through continuous product iteration and laboratory data support, Tunsing DS318 is now widely used in core fields such as mobile communications, smart wearables, and energy storage power supplies