Project application · On-site video
LK2C Door Panel: From Material Matching to Production Application
See R-5670＋R-60C in door panel production, from robotic spraying and mesh bonding to infrared reactivation and pressing.
Watch by process stage
A closer look at materials and processes
- Component
- LK2C door panel
- Adhesive system
- R-5670＋R-60C
- Material combination
- PP substrate, mesh and PVC skin
- Video duration
- 3 minutes
The on-site sequence comprises weighing, proportioning, mixing, robotic spraying, tunnel drying and manually bonding the mesh to the PP substrate. The PVC skin and the substrate with bonded mesh then undergo infrared reactivation, followed by pressing, pressure holding, cooling and demoulding. Mixing ratios, temperatures, pressures and times must be determined using the current technical documentation for the matched components and the actual project process.
00:21–00:26 is an AI-generated technical illustration, not a cross-section of the actual LK2C part or an actual factory process.
View video transcript
A door panel, from material matching to production application. The new LK2C project connects material validation with real manufacturing processes. RELANET's two-component waterborne polyurethane adhesive supports door panel bonding. From the substrate and mesh to the PVC skin, each interface matters.
Weigh the adhesive, add the components at the specified process ratio, and mix. R-5670 and R-60C form this two-component adhesive system.
At the automated spray station, the robot applies adhesive along its programmed path. From the wider view to the close-up, see how the spray head follows the shape of the part.
After spraying, the parts pass through the drying tunnel. This comes before manual mesh bonding. Follow the material flow into the next operation.
After drying, the mesh is manually bonded to the PP substrate. It is aligned, laid along the contour, and pressed into place. Mesh-to-substrate bonding comes before the skin is laminated onto the assembly.
After mesh bonding, the PVC skin and the mesh-laminated PP substrate undergo a second infrared activation step. They are then pressed together. From preparation to lamination, each stage follows the sequence used on site.
After pressing come pressure holding, cooling, and demolding. Equipment operations and manual handling work together to complete the door panel laminate. The close-ups show the application details.
Room-temperature peel, heat aging, damp heat, temperature cycling, and elevated-temperature creep: all OEM-required test items passed. Material matching is supported by these test results.
At eighty degrees Celsius, under a one-hundred-gram load for twenty-four hours, all three creep-test specimens showed no displacement. From validation to application, the new LK2C project moves forward. RELANET supports bonding solutions for automotive interiors.