Production of paper with decorative, non-rectilinear edges
US4669644A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1986 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Jan 24, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T225/343
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method and apparatus of trimming a travelling web of paper along the longitudinal direction of the web comprising transporting the web through a trimming station and continuously trimming said web in said station, wherein said method comprises supporting a portion of said web on a support surface in said station such that a portion of said web to be trimmed off overhangs an edge of said support surface, contacting said overhanging portion of said web with a travelling endless member which crosses the edge of the said support surface to trap the overhanging portion of the web between the endless member and a tearing support member adjacent said edge to shear said overhanging portion continuously from the web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.