De-tackified labels extrusion process applied integrated label product
US5849385A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1996 |
| Grant date | Dec 15, 1998 |
| Priority date | — |
| Expiry date | Jul 22, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1495
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In the manufacture of integrated labels it is desirable to apply pressure sensitive adhesive in a continuous manner, yet it is undesirable for active adhesive to be on one or more edges of the form since active adhesive can interfere with nip rollers upon entering a laser or other non-impact printer, or can otherwise interfere with proper operation of the printer. By using an adhesive--that is de-tackified by direct exposure to a sufficient type and dosage of electromagnetic radiation (such as a hot melt adhesive de-tackified by applying about 3000 mJ/cm.sup.2 total dosage of ultraviolet radiation)--that problem may be avoided. Apparatus for producing integrated labels with the adhesive at one or more edges being de-tackified may include a first conveyor for conveying sheets (either in stacked or single sheet form) in a first direction, and at least one ultraviolet radiation source mounted adjacent a side of the conveyor parallel to the first direction. A stacker, packaging device (such as a shrink wrap machine), 90.degree. conveyor, and/or turn table may also be utilized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.