Selective tamper resistance for on-package peelable premiums
US4324823A · kind A · utility
97Cited by
9References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 13, 1981 |
| Grant date | Apr 13, 1982 |
| Priority date | — |
| Expiry date | Jan 13, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2486
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A laminated carton comprising a paper board substrate and an outer paper ply including a peelable section in the paper ply defined by a perforated tear outline providing a leading edge, said ply being bonded to the substrate by a water soluble laminant coated with a release agent in a pattern which includes voids in the coating at said leading edge, said voids being shaped to provide variable adhesive bond between said plies as peeling of said section is initiated after application of moisture to the area of said leading edge to dissolve said laminant at said voids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.