Car Body Blast cleaning
Today there is an alternative to both sandblasting/ soda blasting and chemical stripping car body shells. Plastic Media Blasting has quickly become the most popular and excepted method.
Plastic Media is mainly used for thin gauge steel or aluminium . This method uses plastic granules which are harder than paint but softer than the base material. Using a high-volume, low pressure application, the media will cut, shear and lift the paint without affecting the substrate.
Since it is a dry process, there is no flash rust after stripping and most importantly the plastic won’t warp or pit the metal. It’s non-corrosive and safe for all metal, stainless steel, fibreglass, plastics, aluminium and moving parts. The only short fall is it won’t remove rust… hence may require other blasting methods.
Plastic Blast Media or Plastic Stripping first introduced in the mid-1980’s by the United States military to provide an environmentally acceptable alternative to chemical strippers. Utilising spent plastic buttons from military uniforms, it was noticed that the media was soft enough to not cause damage on the substrates, but aggressive enough just to remove paint and coatings, without peening or damaging the surface or substrate.
How we process cars and parts.
We actually use a combination of materials. After preparation is complete. This is step one, the plastic media will remove all of the paint and primer but will not remove rust. After blasting we clean off the parts and move them into another blast room for rust removal. This second step requires a material such as alum oxide or steel grit it remove the rust. At this point you are basically ready for primer, which we could apply. Steel has a tendency to rust relatively quickly so the application of primer should be within a day or two. This we can do here if required at extra cost.