Who hasn’t already removed film centimeter by centimeter or struggled with adhesive residue? Sometimes, however, it’s easier just to cover up the old campaign. In that case, it’s very important to use a film with good opacity, because the old campaign should not show through in unprinted areas. A film with grey adhesive often helps a bit, or you can use a so-called HOP, a highly opaque film. Sometimes, though, that isn’t really enough, and you need a completely “opaque” film. Even for applications where no light should pass through, a special film is used, called a Block Out.
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