Release coated liners and security labels containing such release coated liners
US5869160A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1996 |
| Grant date | Feb 9, 1999 |
| Priority date | — |
| Expiry date | Jun 7, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1486
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A release coated liner and security labels containing such release coated liners are described. In one embodiment the labels comprise PA1 (A) a sheet having an upper and a lower surface; PA1 (B) an adhesive layer having an upper surface and a lower surface and having its upper surface in contact with the lower surface of the sheet; and PA1 (C) a liner with a release coating removably affixed to the lower surface of the adhesive layer (B) wherein the release coating contains a microencapsulated material which is capable of marking a substrate when (a) at least some of the capsules are broken, (b) the liner with release coating is removed from the label, and (c) the label, without liner and release coating is applied to a substrate. The sheet (A) may be a multilayer sheet. In preferred embodiments, the microencapsulated material is an etchant or a fluorescent agent. The security labels may be applied to glass or metal and is preferably applied to painted glass or metal. When graphics or other printing are applied to the security labels by an impact-type printer, the capsules in the release coating are broken in the area of impact, and when the liner with release coating is subsequent…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.