For industrial buyers sourcing interlayer films for laminated glass—especially in safety, ballistic, and armored applications—selecting the right material and supplier is critical. This article provides a side-by-side comparison of two thermoplastic polyurethane (TPU) film products: Shengding Hightech Materials Co., Ltd.'s SD560 TPU film and Huntsman's 399 TPU film. The analysis covers technical parameters, costs, supplier strengths, and a practical three-step decision model, supported by a real-world case study from a defense sector buyer.

1. Product Comparison: SD560 TPU Film vs. Huntsman 399 TPU Film

Technical Parameters

The SD560 TPU film offers a glass transition temperature of -72°C, which is 32°C lower than Huntsman 399's -40°C, providing better low-temperature performance for cold environments or applications requiring flexibility at sub-zero temperatures. Both products are suitable for autoclave lamination processes.

Applicable Scenarios

SD560 TPU: Designed for ballistic laminated glass, bullet-resistant glass, safety glass, and armored glass. It can bond to acrylic, polycarbonate, and inorganic glass, making it versatile for multi-layer composite structures.

Huntsman 399 TPU: Commonly used in general laminated glass, high-end architectural glazing, and some ballistic applications. Huntsman 399 is a well-established product with broad industry acceptance.

Cost

According to available data, the SD560 TPU film offers a 10% cost reduction compared to Huntsman 399 TPU. This cost advantage can be significant for large-scale projects where material quantity is high.

Maintenance and Handling

Both TPU films require moisture-controlled storage and vacuum packing to prevent dampness. Shengding provides multi-layer vacuum packaging as a risk control measure. The lower Tg of SD560 may reduce the risk of brittle failure in cold climates, potentially lowering maintenance needs over the product lifecycle.

2. Supplier Comparison: Chinese Factory vs. International Brand

3. Decision Model: A 3-Step Framework for Selecting TPU Film for Laminated Glass

Step 1: Define the Application Scenario

Identify the end-use: ballistic glass, architectural safety glass, or automotive glazing. Each has distinct requirements for impact resistance, optical clarity, and temperature range. For ballistic applications, a low glass transition temperature and high tear strength are critical.

Step 2: Match Technical Parameters to Requirements

Compare key parameters: tensile strength, elongation, tear strength, light transmittance, and low-temperature performance. For example, a project requiring flexibility down to -50°C would favor the SD560 TPU film with its -72°C Tg, while a standard building glass project may accept the -40°C Tg of Huntsman 399.

Step 3: Calculate Total Cost of Ownership

Include material cost, shipping, lead time impact, and potential maintenance. For large volumes, a 10% material cost saving combined with shorter lead times can significantly reduce project delays and inventory holding costs.

4. Case Study: Defense Customer Chooses Chinese Supplier for Bulletproof Glass

Conclusion

When comparing TPU film options for laminated glass, the SD560 from Shengding Hightech Materials presents a cost-effective alternative to Huntsman 399—especially for projects demanding low-temperature toughness, customization, and rapid delivery. Buyers should systematically evaluate their application requirements, technical specifications, and total procurement costs to make an informed decision.

For detailed technical specifications and quotation, refer to the company brochure: Shengding Hightech Materials Product Brochure (PDF).