Air Bubble Generator for Uniform Micrometer Bubbles in Polyurea

The air introduction system is segmented into multiple air introduction holes distributed across the bottom surface of the container, rather than using a single high-speed rotation method. This segmentation allows for uniform distribution of air bubbles throughout the resin composition, preventing large bubble formation and ensuring consistent bubble size for improved durability.

A porous plate is introduced as an intermediary component between the air source and the resin composition. The porous plate structures the air flow into controlled streams that bubble through the resin uniformly, mediating the air introduction process to achieve consistent micrometer-sized bubbles without relying on high-speed rotation.

Air is introduced into the resin composition during the mixing and application process itself, rather than requiring preliminary treatment of the resin or the substrate. This preliminary action of incorporating air bubbles directly into the water-soluble resin enables the formation of breathable coating films without compromising safety or requiring harmful chemicals.

The system uses pneumatic principles by introducing compressed air through multiple small holes and a porous plate to create uniform bubbles in the water-soluble resin. This pneumatic approach enables effective air bubble generation in water-soluble resins without requiring oil-based alternatives or harmful additives.

The coating film is designed to be a porous material with uniformly distributed micrometer-sized air bubbles embedded within the resin matrix. This porous structure provides both mechanical integrity for durability and controlled void spaces for breathability, allowing the film to maintain strength while enabling air permeability.

The air bubble parameters (size, distribution, concentration) are precisely controlled during the mixing process to achieve optimal balance between film integrity and air permeability. By changing parameters such as bubble size to micrometer range and distributing them uniformly, the coating film achieves both durability and breathability simultaneously.