Challenges in sound dampening
To reduce the noise levels and thereby increase drivers' and passengers' comfort, liquid-applied sound dampening materials (LASD) are often used on the floor panel. Those materials can be challenging, especially when applied in high volumes and flow rates. Robust systems components are vital. Atlas Copco's SCA product line offers high-quality and effective dispensing systems for LASD applications in paint shops. Depending on the customer’s requirements and material properties, different applications and system configurations are possible.
Flat stream is a low-pressure application and most commonly used for LASD. The bead size and shape are defined by the nozzle geometry. For LASD, a wide slot nozzle is used to enable broad beads and an even material distribution, all while handling high flow rates at short cycle times. Flat stream is a very effective and flexible application for LASD. The liquid material can be applied exactly where needed at exactly the required volumes. At hotspot areas, more sound dampening material is needed. At areas with low vibrations, material can be saved.
Multi-orifice application (MOG)
Streaming with a multi-orifice applicator (MOG) is a simple and effective solution for applying LASD. It is mainly used for water-based acrylic materials. The application width can either be 75 mm or 150 mm. Within this width, multiple single beads are applied in parallel. High volumes can thus be processed at short cycle times. At the same time, the special bead pattern provides a larger application surface.