Apparatus for transferring a discrete portion of first web onto a second web
US6766843B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2003 |
| Grant date | Jul 27, 2004 |
| Priority date | — |
| Expiry date | Jan 30, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1768
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
This invention relates to an apparatus for transferring a discrete portion of a first web traveling at a first speed onto a second web traveling a second speed. The apparatus includes a converting mechanism capable of forming at least one discrete portion out of the first web. An anvil roll is positioned in close proximity to the converting mechanism and can travel at a rotational speed equal to the first speed. The anvil roll is a vacuum roll that is capable of directing the discrete portion away from the converting mechanism. A transfer roll is arranged in close proximity to the anvil roll and initially travels at a rotational speed equal to the first speed. The transfer roll forms a gap with the anvil roll through which the discrete portion can pass. The transfer roll is also a vacuum roll that is capable of directing the discrete portion away from the anvil roll. The transfer roll is capable of changing rotational speed to match the second speed during a single revolution. A backing roll is arranged in close proximity to the transfer roll and travels at a rotational speed equal to the second speed. The backing roll cooperates with the transfer roll to combine the discrete porti…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.