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US 5,843,547 AGranted
Multilayered label
AssigneeBeiersdorf AG
InventorsKlaus Kulper, Hans-Christian Riekhof, Arne Koops
Life of this patent
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Abstract
Multilayered label comprising a) a base layer made of plastic containing b) an additive which exhibits a color change under light radiation, in particular laser irradiation, and which c) is coated on one side with a self-adhesive composition which d) is, if desired, covered by a release paper or a release film, where e) the base layer is covered on the other side by one or more protective films arranged one on top of the other which f) are transparent, permeable to laser irradiation and are provided with a self-adhesive coating.
Claims11
Multilayered label comprising
- a) a base layer made of plastic containing
- b) an additive which exhibits a colour change under laser radiation, and which
- c) is coated on one side with a self adhesive composition which
- d) is, if desired, covered by a release paper or a release film, where
- e) the base layer is covered on the other side by one or more removable films arranged one on top of the other which
- f) are transparent, permeable to laser irradiation and are provided with a self adhesive coating, wherein the base layer comprises a polybutylene terephthalate or an electron beam-cured polyurethane acrylate paint.
3 more elements
Dependencies are inferred from the claim text.