Spalling of automotive bumper during paint
If the substrate can be damaged by the gas
generation within its pores the cleaning
will not be abrasion free. This happens with
some filled plastics, wood, plaster and
similar friable substances.
If the solid
dry ice particles find it difficult to
penetrate the surface layer, cleaning will
be very slow, e.g. enamels, sealants, etc.
Dry ice cleaning can be much slower than
an abrasive process and cannot create any
specific surface finish standard, e.g. rust
will be removed, but the underlying steel
surface will remain pitted.
The process is noisy and it is difficult
to collect the small amount of debris
created by the material removed.