Engineered for Extreme Cold: New Tunsing DS6191 Adhesive Film Features Superior Low-Temperature Resistance

SHENZHEN —— Recently, Shenzhen Tunsing Plastic Products Co., Ltd., a leading global manufacturer of hot melt adhesive materials, officially announced the latest technical data and processing guidelines for its core product, the DS6191 Hot Melt Adhesive Film. Engineered as a low-temperature bonding solution for modern industrial upgrades, DS6191 stands out as an ideal choice for high-end manufacturing, fashion apparel, and electronic industries to achieve "energy saving, cost reduction, and efficient bonding" due to its precise physical and thermodynamic characteristics and broad material compatibility.

DS6191 is an eco-friendly hot melt adhesive film developed from premium Polyurethane material with a milky translucent appearance. The product is supported and protected by high-quality Glassine Release Paper and features the excellent capability of being repeatedly heated and plasticized.

To meet the stringent manufacturing standards of global industries, Tunsing has equipped this product with a highly flexible and diverse specification matrix:

• Thickness Range: Breaking the limits of single traditional specifications, the thickness range spans from 0.0125mm to 0.15mm, with conventional stock covering 0.05mm, 0.08mm, 0.10mm, and 0.15mm.
• Width and Length: The standard finished product specification is 1380mm * 100 yards/roll, and it supports precise slitting within a width range of 5mm to 1580mm to perfectly match various automated molds and roller equipment.

According to authoritative data measured by the Tunsing Laboratory using advanced equipment such as the NETZSCH DSC 214 differential scanning calorimeter, DS6191 demonstrates four groundbreaking technical advantages in practical applications:

DS6191 not only delivers outstanding performance on traditional materials like clothing, embroidery, luggage, handbags, and sports goods, but also demonstrates exceptional adhesion and high-strength bonding performance on traditionally difficult industrial composite substrates such as fiberglass sheet, TPU, PVC, PC, and ABS, successfully conquering the pain points of cross-material lamination.

• Ultra-Low Activation Temperature: The product's activation temperature range is only 68°C - 110°C. Lower operating temperatures effectively reduce heat consumption and protect heat-sensitive substrates from thermal deformation damage.
• Second-Level Curing Efficiency: During the first lamination stage, the mechanical mold temperature requires only 80°C - 120°C. Under a uniform pressure of 0.3 - 0.6 mpa, it takes only 5 - 15 seconds to complete fast curing and firm bonding, significantly shortening assembly line waiting cycles.

Through precise DSC curve analysis, an obvious endothermic effect can be found near the temperature of -44.2°C, proving that the glass transition temperature (Tg) of the film is as low as approximately -45±7°C. This characteristic ensures that the final laminated products maintain excellent flexibility and structural integrity even in the freezing winter outdoor environments of North America or Europe, preventing brittle cracking.

According to the dynamic parallel plate test results using an Anton Paar rotational rheometer, the energy storage modulus and complex viscosity decrease systematically with increasing temperature. The critical transition temperature at which the material transforms from a viscoelastic solid to a viscoelastic fluid is approximately 54.2°C. This outstanding rheological control grants the product more uniform leveling and bonding density during the second lamination process (recommended temperature: 80°C - 130°C, time: 8 - 25 seconds).

Tunsing's technical experts specifically remind users that the final bonding strength of the hot melt adhesive film is closely related to the bonding temperature, pressure, and time. Given the physical differences in machinery and materials across various applications, the conditions indicated here are only basic. Manufacturers are encouraged to establish the most ideal, customized construction conditions through actual production sampling and testing to ensure the finest final tooling and bonding quality.