Understanding Corrosion in Water Pipelines: A Guide for Pipeline Designers



Last updated: July 21, 2020

What Does Air-Encapsulated Mean?

Air encapsulated refers to products that pack air in between two materials to form a layer that provides a cushioning effect against shock. It is used in coating where different coating materials are required. Most of the tubes are air-encapsulated for a successful coating. Encapsulation helps to improve the effectiveness of inhibitors. It also enhances their inhibition capacity.


Corrosionpedia Explains Air-Encapsulated

In multi-layer coating, the encapsulation in spray painting is achieved by a repetitive process of wetting and drying. Air-encapsulated coating can be done by either top or bottom spraying techniques.

Air-encapsulated coating requires atomization that develops fine droplets; these small droplets enhance the spreading and wetting of the surface, hence achieving a better coating. The air also provides rapid freezing, hence the coating dries at a fast rate such that more layers develop on the surface. The mixing of the coating material in the chamber allows the escape of air, which assists in the drying process.

Air-encapsulated coating must be able to have viscosity to withstand atomization and pumping forces; thermal stability must be determined so that thin films form on the surface. The humidity of the air, air flow and the temperature in the chambers control the air- encapsulated spray painting application. Air encapsulated techniques are mostly applied in the food industries.


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