Apparatus and method for high speed laser perforation of webs
US6423932B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Feb 16, 2001 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Feb 16, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K26/0846
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An apparatus and method for high speed laser perforation of a web involves a web-bearing cylinder receiving the web in a wrapped spiral pattern. The web-bearing cylinder includes a slit along a circular circumference of the cylinder. A laser guiding tube is provided for propagation of a laser beam within the web-bearing cylinder. An inner cylinder is also provided in the web-bearing cylinder. The inner cylinder has an axis, supports a reflecting mirror adjacent to the laser guiding tube to direct the laser beam in the slit in the web-bearing cylinder, and is rotatable around the axis to adjust an orientation of the reflecting mirror so as to direct the laser beam around the circular circumference of the web-bearing cylinder in the slit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.