A plastic ship? You will need to remove the palastic liner.This sentence was on my English text.
No, a piece of plastic covering something
plastic liner means Wrap non- decorative wheels in adequately taped clear plastic liner.
It is a liner for something, a waste bin for example, that is made of plastic.
A plastic liner is a sheet of plastic that is put there to protect the surface of the product. For example if you bought a new phone it would probably have a plastic liner over the screen to avoid it being scratched.