Nonwoven material with photochromatic properties, where photochromatic dyes are introduced directly into polymer melt to form homogeneous distribution, so that entire surface exhibits photochromatic effect, useful in e.g. packaging

摘要

Nonwoven material (I) with photochromatic properties, where photochromatic dyes ((0.001-0.5%)) are introduced directly into the polymer melt and a homogeneous distribution is obtained in the polymer melt, so that the entire surface exhibits the photochromatic effect, is claimed.