Multiple ply business form
US4880255A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1988 |
| Grant date | Nov 14, 1989 |
| Priority date | — |
| Expiry date | Dec 27, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41L1/22
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A variable purpose business form of the multiple ply type is provided by a construction including a plurality of superimposed plies 10, 12, 14, 16 and 18 including an upper ply 10 and a bottom ply 12 along with intermediate plies 14, 16 and 18. Glue lines 28 along one longitudinal edge of the plies 10, 12, 14, 16, 18 and secure each of the plies 10, 12, 14, 16, 18 together and first lines of weakness 26 are located in at least some of the plies 10, 12, 14, 16, 18 just inwardly of the glue lines 28. The upper and bottom plies 10, 12 have substantially equal width and a second glue line 36 at the opposite longitudinal edges of the upper and bottom plies 10, 12 secure the upper and bottom plies 10, 12 together. A second line of weakness 32 is disposed in the upper ply 10 adjacent the second glue line 36 and the intermediate plies 14, 16, 18 have different widths, all less than the upper and bottom plies 10, 12 and not greater than the distance between the one longitudinal edge and the second line of weakening 32. A cut-out 46, 50 is located in the upper ply 10 inwardly of the second line of weakening 32 for exposing the ends 40, 42, 44 of the intermediate plies 14, 16, 18.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.