Industry News: Tunsing DS8303 High-Performance EVA Hot Melt Adhesive Film for 3C and Energy Sector Precision Bonding

[SHENZHEN, April 30, 2026] – As global consumer electronics evolve toward thinner designs and higher integration, precision bonding technology has become a core element for structural stability. Recently, Shenzhen Tunsing Plastic Products Co., Ltd. officially introduced its flagship product, the DS8303 Ethylene Synthesis Modified Hot Melt Adhesive Film.

With its low activation temperature, high adaptability, and superior physical stability, DS8303 provides a highly competitive bonding solution for 3C electronics, battery packaging, and mobile power supplies.

DS8303 is a thermoplastic hot-melt adhesive film supported by a release paper backing. Its unique composition ensures excellent performance under complex industrial conditions:

• Wide Substrate Compatibility: This film demonstrates strong adhesion not only to textiles but also to metals, plastics, and wood. It is specifically optimized for bonding 3C product packaging, battery shells, and power bank materials.

• Low Activation Temperature for Easy Processing: DS8303 features a lower activation temperature, which protects sensitive electronic components from heat damage and significantly improves production efficiency.

• High-Precision Specifications:

  • Color: Amber translucent, balancing aesthetics with discreet bonding.

  • Melting Range: 65-90°C (ISO 11357 standards).

  • Proportion: 1.0±0.02g/cm³, meeting the requirements for lightweight product design.

In the Technical Data Sheet (Version V1.2), Tunsing provides an in-depth look at the dynamic thermodynamic behavior of DS8303 through DSC (Differential Scanning Calorimetry) and rheological curves:

1. Precise Thermal Transition Point: Rigorous DSC testing identifies a significant melting peak for DS8303 at 80.0°C, ensuring rapid liquefaction and wetting upon heating.

2. Viscoelastic State Transition: According to rheological data, the critical transition temperature where the material shifts from a viscoelastic solid to a viscoelastic fluid is approximately 84.2°C. This data serves as a core reference for setting pressure and temperature on automated production lines.

To achieve optimal peel strength, the manufacturer recommends the following lamination process:

• Temperature Range: Mechanical mold temperature should be set between 110°C - 160°C.

• Pressure Control: Maintain a uniform pressure of 0.3-0.6 mpa.

• Time Settings: An initial lamination of 5-15 seconds, followed by a second lamination of 8-25 seconds to enhance molecular chain penetration.

Headquartered in Pingshan District, Shenzhen, Tunsing Plastic Products Co., Ltd. is a high-tech enterprise focusing on the R&D and production of high-performance hot melt adhesive materials. The company is dedicated to providing eco-friendly and efficient bonding solutions for manufacturing customers worldwide.