Application to Plastics and other Surfaces
   
Most plastics do not generally present a problem for the application of vinyl. However certain types of plastic substrate may present a problem as follows.

Substrate Considerations
Flexible PVC (Banner)
Flexible PVC’s such as banners and vehicle curtain sides gain their flexibility from the use of plasticizers, which are prone to migration, causing distortion of applied vinyl graphics. Use MetaFlex for application to banners, or curtain grade film for curtain sides.
Polycarbonates
Polycarbonates are prone to out-gassing and this gas can become trapped underneath the vinyl, forming unsightly bubbles.
Polypropylene
These are ‘low energy’ plastics, and adhesion may be limited.
GRP
GRP can continue to outgass, causing vinyl graphics to bubble - check to ensure that the material is completely cured. Also ensure that the wax film used as a mould release agent is fully cleaned off.
Galvanised Steel
Prepare the surface well enough to provide good contact: Potential Issues are whether there is a white film of zinc corrosion on the surface that should be cleaned off, or whether it is new enough to have an chemical protective coating still on it from the manufacturers.