Paint stripping of aluminum cans [Blast processing case study]

By using air blasting for paint stripping, it is possible to improve work efficiency without the need for organic solvent stripping or labor-intensive manual work with wire brushes!

The surface condition of aluminum cans after processing varies depending on the type of resin used. 1. When using our product "Polyextra," it is possible to leave a glossy finish while only stripping the surface coating. This is a polishing material made of unsaturated polyester resin. 2. When using our product "Polyplus," the surface is lightly cut, resulting in a matte finish. It is possible to retain designs such as grooves and indentations. This is a polishing material made of urea resin (urea-formaldehyde resin). 3. When using our product "Type Three," the surface becomes matte. It allows for efficient and quick cleaning. This is a polishing material made of melamine resin. All photos show processing with polishing materials of size "#60-80 (325-180μm)," and the blasting conditions are standardized. In the case of thin aluminum, such as aluminum cans, alumina or glass beads can quickly create holes, but our resin-based polishing materials do not easily create holes. However, due to the way the blasting is applied, the aluminum may expand (stretch), so it is necessary to understand the physical properties of the blasting target and set the blasting conditions accordingly.

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