Method and apparatus for laser cutting of adhesive-bearing webs separate from liner webs
US6592693B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Aug 11, 2000 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Oct 24, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1064
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Web processing apparatus (10, 66, 122) for accurate, rapid laser cutting of label stock is provided. The apparatus (10, 66, 122) includes a laser cutting station (12, 68), an adjacent elongated vacuum conveyor (18, 80), and a cut segment attachment station (16, 72, 126) spaced from the cutting station (12, 68). A composite web (20) made up of a preprinted web (22) having a series of axially spaced apart images or segments (58) on one surface and an opposed adhesive-bearing surface (60) and a release-coated liner web (24) is fed to the apparatus (10, 66, 122) and first separated, with the liner web (24) being collected in a takeup roll while the preprinted web (22) is directed along the conveyor (18, 80) through the laser cutting station (12, 68). The individual preprinted segments (58) are laser cut and individually conveyed to the attachment station (16, 72, 126) where they are applied to a liner web (24, 24a). The remainder of the web (22) in the form of a cut matrix web (62) is separated from the individual cut segments (58) via an appropriate takeup or collection device (42, 120, 134). Preferably, an observation sensor(116) is positioned to observe the preprinted segments (58) …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.