| 摘要 |
<p>The invention relates to a band of windable plastic material, applicable for the production of bags, such as mesh bags, comprising a plurality of markings, distributed along its length, transparent to visible light and luminescent upon being radiated with ultraviolet or infrared light. According to an embodiment, the band is made up of two superimposed sheets, of which the inner sheet is intended to be applied on a bag, whereas the outer sheet is intended to be exposed outside of the bag, the mentioned markings being printed on the inner face of the outer sheet.</p> |
