| 摘要 |
<p>The wrapping film consists of a main opaque section (2) extending along its whole length and covering between one third and two thirds of its width, a second opaque section (3) covering up to a third of the width of the strip, and a transparent strip (4) between the two opaque sections, extending along the whole length of the film. The two opaque sections can be produced by printing on a layer of transparent film, or the transparent strip can be produced by de-metallising part of a metallised film.</p> |
