Leading the Way in Efficient and Eco-Friendly Bonding DS809 High-Performance Polyurethane Hot Melt Adhesive Film

Shenzhen, China — Amidst the growing demand for lightweight, high-efficiency, and environmentally friendly manufacturing, Shenzhen Tunsing Plastic Products Co., Ltd. has officially launched its flagship product to the market — the DS809 Hot Melt Adhesive Film. As a high-performance thermoplastic polyurethane (TPU) hot melt adhesive film, DS809 features a low operating temperature, rapid curing, exceptional cold resistance, and broad substrate compatibility, bringing a brand-new breakthrough to bonding processes in industries such as apparel, footwear, luggage, and electronic materials.

1. Low-Temperature and High-Efficiency for Enhanced Productivity

   DS809 features a low activation temperature (72–109°C) and melting range (40–60°C). During pressing and lamination, it achieves strong bonding with a quick curing time of just 5–25 seconds. This not only significantly boosts automated production line efficiency but also effectively prevents heat damage to heat-sensitive substrates.

2. Exceptional Ultra-Low Temperature Cold Resistance

   Based on precise Differential Scanning Calorimetry (DSC) and dynamic mechanical thermal analysis testing, the glass transition temperature (Tg) of DS809 is as low as -55.2°C. Even in extreme cold environments, the adhesive film maintains outstanding flexibility and bond strength, resisting brittleness and delamination.

3. Broad Multi-Substrate Compatibility

   DS809 exhibits exceptionally strong adhesion to a wide variety of materials including textiles, thermoplastic polyurethane (TPU), polyvinyl chloride (PVC), polycarbonate (PC), and ABS. Whether for fabric lamination or hard plastic bonding, it provides stable and reliable adhesive performance.

4. Superior Rheological Performance and Flowability

   Dynamic mechanical measurements using an Anton Paar rotational rheometer demonstrate that DS809 transitions from a viscoelastic solid to a viscoelastic fluid at approximately 55.2°C. With a Melt Flow Index (MFI) of 37±10 cm³/10min (ASTM D1238-04), it ensures excellent flowability and uniform coating during the pressing process.

• Composition & Structure: Polyurethane, supported by a single-sided Glassine Release Paper protection layer.

• Appearance / Color: Milky White Semi-translucent.

• Density / Specific Gravity: 1.20 ± 0.02 g/cm³.

• Shore Hardness: 97 ± 3 (Shore A).

• Activation Temperature: 72°C – 109°C.

• Melting Range: 40°C – 60°C (ISO 11357).

• Glass Transition Temperature (Tg): -55 ± 8°C (GB/T 19466.2-2004).

• Melt Flow Index (MFI): 37 ± 10 cm³/10min (ASTM D1238-04).

• Conventional Specifications:

  • Thickness Range: 0.03mm – 0.15mm (Conventional thicknesses: 0.05mm, 0.10mm, 0.12mm, 0.15mm)

  • Width Range: 5mm – 1480mm (Conventional width: 1380mm)

  • Roll Length: 100 yards / roll

To help customers establish optimal production processes, Tunsing Laboratory provides the following baseline recommendations:

• Mechanical Mold Temperature: 90°C – 130°C

• Time: 5 – 25 seconds

• Pressure: 0.3 – 0.6 MPa

(Note: Actual ideal bonding conditions depend on specific machinery and materials, and should be verified and established through manufacturing trials for particular applications.)

Backed by its easy processing, high strength, and low-temperature resistance characteristics, DS809 is widely utilized in seamless bonding and lamination applications across the following sectors:

• Apparel & Embroidery: Brand seamless clothing bonding, embroidery badge backing, etc.

• Footwear, Hats & Luggage: Athletic shoe upper lamination, handbags, luggage, and hat structural component bonding.

• Sporting Goods & Toys: Protective layer lamination for sports equipment, high-quality toy assembly, etc.

Shenzhen Tunsing Plastic Products Co., Ltd. is located in Tunsing Industrial Zone, Xiatian Village, Longtian Street, Pingshan District, Shenzhen, specializing in the R&D, production, and sales of high-quality hot melt adhesive films. Equipped with advanced testing instruments (such as NETZSCH DSC and Anton Paar rotational rheometers) and rigorous quality control systems, the company is dedicated to providing global clients with professional and eco-friendly seamless bonding solutions.