Folding apparatus with improved web transport
US5004451A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 18, 1990 |
| Grant date | Apr 2, 1991 |
| Priority date | — |
| Expiry date | Jan 18, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H45/28
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A folder comprising a knife cylinder adapted to be driven at a rate independent of the speed of the web being supplied, a mating cylinder adapted to cooperate with said knife cylinder in cutting a web into sections at a cutting nip and which is provided with grippers for the leading edges of the sections, and a belt conveyor belt trained around a part of the circumference of said mating cylinder following said nip. It is possible to ensure more accurate production and greater reliability if the folder is so designed that it includes at least one of the cylinders delimiting said cutting nip and having suction or blowing ports placed following the cutting means, such ports being adapted for causing a flow of air towards the cylinder having said grippers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.