Easy open ream wrap
US9302836B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 2006 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Nov 25, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D85/62
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A ream wrap package formed by wrapping a sheet of polymeric film around a stack of paper, the sheet having at least one line of weakness formed therein, to form a rectangular tube with sides overlapping, sealing one side to the other to form a girth seal, closing the tube at each end to form an envelope seal with tucked in ends and overlapping flaps, at least one of which is trapezoidal, so that in the formed package there is at least one line of weakness extending along the whole length of a surface of the package outside the girth seal, positioned so that it terminates at each end of the package within a region of the transverse direction defined by that portion of the overlapping flaps where there are only two layers of overlapping film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.