Automotive adhesives and technical dataWater-based adhesives, APAO, PUR and high-transmission films

RELANET focuses on automotive interior and exterior bonding. Its public product range includes one-component water-based polychloroprene and water-based PUD. It also includes two-component water-based polyurethane, modified polyolefin hot melts and PUR. High-transmission yellowing-resistant adhesive films complete the range. Applications include door panels, instrument panels, seats, luggage trim, acoustic parts and illuminated interiors.

Water-based PUD uses water as its main dispersion medium. The usual steps are spraying, drying, activation and joining. It suits lower-VOC wrapping processes. PUR is a reactive hot-melt applied with heat. Cooling gives it handling strength, and curing continues afterward. It can suit automated, heat-resistant or structural applications. Assess substrates, cycle time, open time, durability and equipment together.

R-5110 is a starting point for porous materials that need rapid wetting and initial tack. These include foam, acoustic cotton and fiber felt. For skin-to-carrier interior lamination, evaluate R-5670 or R-5610 when higher durability or crosslinking is needed. Tests on the actual substrates must guide the choice.

R-5110 is a one-component water-based polychloroprene adhesive. It was developed for foam, acoustic cotton, insulation cotton, fiber felt and nonwovens. Parts can be joined immediately after spraying. The recommended press time is 1-10 seconds at 20°C. An internal project record covers a Corolla acoustic component. Production approval still requires checks of foam density, porosity and coat weight.

Evaluate R-5610 for spray-applied, water-based wrapping. Evaluate RY-10 when the project needs a prefabricated film, controlled bond-line thickness and long-term color stability. Test transmission, haze, color difference and durability. Use the actual skin, light source, adhesive thickness, carrier and part geometry.

Requirements depend on the adhesive and surface. R-5610 data specifies flame treatment of PP and a backing coat on IXPP. R-7110 and R-7206 can bond confirmed PP grades directly, without primer, flame or plasma. This requires clean surfaces and validated processing conditions. Skipping activation does not mean skipping cleaning. Control release agents, recycled content and contamination. Then test actual-part loads and durability.

Both are modified polyolefin hot melts. R-7110 offers a longer joining window and a 90°C heat-resistance target. Evaluate its compatibility with ABS and untreated PP. R-7206 serves higher-temperature and fixing applications, with a 110°C project target. Choose against the actual part load and durability specification.

Check bond-line thickness and uniformity, water removal, drying time and temperature. Also check ambient humidity, substrate moisture, spray atomization and material compatibility. Raising temperature alone may mask the cause. Use the target coat weight and actual substrates. Measure transmission, haze, color difference and peel strength together.

Provide the product model, substrate combination and part location. Include the application equipment, target cycle time and durability standard. Contact the application team at 020-31600614 or info@relanet.com.cn. Documents and samples depend on project requirements and the permitted disclosure scope.

No. Website values help with early selection. They reflect typical TDS data, project samples or stated test conditions. Before production, confirm the latest TDS and SDS. Test peel, heat resistance, humidity aging, thermal cycling, odor and VOC performance on actual parts. Customer approval is still required.