Structured packaging film and method of making same
US10421263B2 · kind B2 · utility
0Cited by
7References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 12, 2017 |
| Grant date | Sep 24, 2019 |
| Priority date | — |
| Expiry date | Oct 12, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24802
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A structured packaging film is made by first of feeding a flat, unembossed first film web in a gravure printing device to a cylindrical print roller having an engraving on its surface with an array of cavities having a depth of at least 50 μm. Printing laquer is applied to the print roller to fill the cavities. Then the roller is rolled on the first film web to transfer the laquer to the web to form thereon a printed image in gravure printing. The laquer is dried on the web to have a thickness of at least 30 μm and the printed areas form clearly perceptible structuring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.