prov:value
| - Also there can be employed for a substrate, if necessary, a film of high luster (that may be surface calendered) made opaque by including a white pigment in a plastic film of, for example, a polyester such as polyethylene terephthalate (PET), a cellulose ester such as nitrocellulose, cellulose acetate, or cellulose acetate butyrate; polysulfone, polyphenylene oxide, polyimide, polycarbonate, or po
|