Imagable linerless pressure sensitive adhesive
US5840657A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1997 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | Jan 31, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M2205/40
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A linerless continuous series of pressure sensitive adhesive labels is provided which have on one or more selected portions thereof a series of imagable coatings which may be activated to form colored images or areas. The series of labels include a web having first and second surfaces, with a series of imagable coatings of color formers and color developers on the first surface of the web. A coating of a release material overlies the imagable coatings on the first surface of the substrate, and a coating of a pressure sensitive adhesive is positioned on the second surface of the web. The series of labels are wound or stacked so that the coating of pressure sensitive adhesive contacts the release material to permit individual labels to be dispensed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.