Underbody Coating

Under body coating

• Meaning:Underbody Coating an undercoating is a spraying accessory that protects the vehicle’s body underneath.
• The simplest way to deal with rusting underneath your car is to prevent it from happening in the first place .
• The best way to do that is to coat the exposed metal beneath your vehicle to keep water and salt from coming into contact with it.
• Uses of under body coating:
• Protects Against Rust & Corrosion.
• Reduces NVH (Noise Vibrations Harshness) Levels.
• Prevents Paint Chipping.
• Protects Vital Components.
• Types of underbody coating:

1. Rubberized Undercoating.
2. Polyurethane Undercoating.
3. Wax or Paraffin-Based Undercoatings.
4. Asphalt-Based Undercoating.

• Ways of spray:

1. Spray.
2. Electronic.
3. Drip Oil Spray.
4. Dripless Oil Spray.

• Advantages of underbody coating:

1. The film process is simpler and, therefore, easier to automate.

2. Enhances the elegance and glossy appearance of coated tablets.

3. Minimal weight increase (typically 2–3% of tablet core weight) as opposed to more than 50% with sugarcoating.

4. Increased flexibility in formulations as a result of the availability of a wide range of coating materials and systems.

5. Moisture involvement can be avoided (if absolutely necessary) by using nonaqueous solvents.

• Disadvantages of underbody coating:

1. Possible explosion as a result of the flammability of some of the organic solvents used as vehicles for the film-forming polymers.
2. Some of the solvents used in film coating processes are toxic and could constitute health hazard to the formulation scientist.
3. Some of the solvents and polymers used in film coating are relatively expensive.