Method for making windowed packaging material
US11123942B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 2018 |
| Grant date | Sep 21, 2021 |
| Priority date | — |
| Expiry date | Sep 22, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB31B2160/106
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method is disclosed for forming a windowed packaging material. According to the method a web of packaging material is cut in substantially the machine direction along a non-linear path. The cutting action provides two subwebs, each having protruding edge portions and recessed edge portions. The two subwebs are displaced relative to one another so that the protruding edge portions face one another. In this configuration opposing recessed edge portions form windows. The two subwebs are adhered to one another at the opposing protruding edge portions. The resulting windows may be covered with a material that is transparent and/or breathable. A strip of handle material may be applied spanning the respective windows.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.