Film bag with hidden indicia
US6041929A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1999 |
| Grant date | Mar 28, 2000 |
| Priority date | — |
| Expiry date | Mar 26, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S283/903
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A film bag laminate including an outer layer, an inner layer and an adhesive layer for attaching the outer layer to the inner layer. The adhesive layer includes a non-adhesive portion where the outer layer is not adhered to the inner layer. A printed ink layer is formed on the inside surface of the outer layer. The printed ink layer has a hidden indicia portion formed from multiple layers of ink. The hidden indicia portion includes an ink pattern layer disposed on the inner surface of the outer layer which forms at least a partially obscuring and distracting pattern that is visible from the outside of the film bag. A gray block layer of ink is formed on the ink pattern layer. A hidden indicia ink layer is disposed on top of the gray block layer. The hidden indicia layer is obscured from view from the outside of the package by the ink pattern layer and the gray block layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.