Apparatus for receiving and cutting a continuous web
US5213649A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1990 |
| Grant date | May 25, 1993 |
| Priority date | — |
| Expiry date | Oct 15, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1067
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An apparatus and method for cross-cutting a traveling web of material, such as paper, while winding the traveling web into successive rolls of a specified diameter includes a laser, a pair of spaced adhesive applicators and energy means for activating the adhesive to change it from an essentially inert to a web adhesive state. A pair of horizontally arrayed drums support a core on which the traveling web is wound. Upstream of the core, over the lower periphery of one of the drums, the on-coming web has its drum-supported surface exposed to a transversely moveable laser which cuts the web transversely to its direction of travel. Upstream of the transversely actuated laser are a pair of adhesive applicator nozzles which are spaced in the web traveling direction and movable transversely with the laser. An energy means is mounted between the adhesive nozzles and laser to activate the adhesive sprayed by the nozzles. The traveling web can, thus, be severed by the laser and have its trailing edge glued to the web roll being wound while the leading edge of the severed web can be glued to a new core inserted in the winder between the drums.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.