Imagable piggyback label
US5686159A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 26, 1994 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Oct 26, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31663
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A piggyback label construction includes a first label having a stock ply with a bottom face having pressure sensitive adhesive, and an imagable top face. A second label comprises a stock ply having a bottom face with pressure sensitive adhesive, a top face with a continuous image-producing coating, and a continuous adhesive release coating over the image-producing coating. The image-producing coating preferably is a thermosensitive coating having a first heat activation temperature of about 140.degree.-250.degree. F. (preferably about 145.degree.-155.degree. F). The first label stock ply has a weight of about 30 lbs. per 1000 sheet 11".times.17" ream, or less (preferably about 18-30 lbs.). The first label stock imagable top face preferably is a second thermosensitive coating having a higher heat activation temperature than the first heat activation temperature. The image-producing coating may comprise a self-contained coating. The first label may be offset from the second label to provide an exposed portion of the second label image-producing portion which is separated from the rest of the construction by a perforation line, and having pre-printed non-variable indicia.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.