The correct application of sealing and sound proofing materials plays an important part in the production process and has a bearing on the final quality of the painted product.
- Structural or semi-structural adhesives are used for mechanically bonding all types of steel at the flanges and hems
- Anti-flutter adhesives are thermoplastic materials for bonding materials or, in their expanded state, for filling the spaces between the panels during the baking process.
- These are used both on the body’s interior and its exterior because of their highly protective properties, their resistance to water and also to provide the panels with aesthetic continuity.
- This is used first and foremost for protecting the interior surface and the lower sides of the vehicle against corrosion and to provide mechanical protection against impact by objects on the ground.
The sealing line
The sealant line is where the sealing – which is used for filling all the voids, inserts and housings between the body’s panels – is applied in order to prevent water, dust and fumes from infiltrating into the passenger compartment, and to guarantee that the actual panels are protected against corrosion.
The pumping systems can be located close to the lines or within the mastics unit, in compliance with health and safety at work requirements. Where necessary the RAM units (supply pumps) are integrated or equipped with systems to reduce noise levels or guarantee the safety of operators in confined spaces. The product is sent to the manual and automatic work stations where control systems distribute it at the correct application pressures which range from 20 bar to 160 bar and beyond, if required.
The application guns and the extrusion or spray nozzles are designed in conjunction with the client and the products’ suppliers in order to guarantee compliance with the range of work indicated by the production process (extrusion, flat stream, swirl and other).
This sealing line, created by Geico, has a great many strong points: these include the workstations that can be equipped with tool-carrying systems that run along rails, and pipe-carrying systems that make the operator’s work area easy to work in and clean; in this way the ergonomic requirements are met and the operator’s work is made easier. Even the lighting can be specifically designed to suit the different areas of application. Where possible it must remain flexible in order to adapt to the production requirements.