Method and apparatus for sealing applied scent slurry during the printing process
US5534105A · kind A · utility
Inventor
Key dates
| Filing date | Jun 9, 1994 |
| Grant date | Jul 9, 1996 |
| Priority date | — |
| Expiry date | Jun 9, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1712
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for impermeably sealing microencapsulated or other scent slurry during the printing process. The method comprises the application of an impermeable overlay sheet over the scent slurry on a continuous web of material, using double-sided tape or other adhesive means along the periphery of the overlay sheet. Preferably an impermeable metallic foil is used for the overlay, but other impermeable sheet material (e.g., plastic sheet) may be used. The apparatus continually feeds and applies the impermeable overlay sheet also disclosed. A second, similar apparatus may be provided to mirror the first apparatus, in order to apply a second impermeable overlay sheet to the opposite surface of the scent slurry coated web, thereby preventing bleed through of the scent and/or other chemicals. The above method and apparatus provide for the impermeable sealing of the scent slurry used for advertising in magazines and the like, providing advantages for persons allergic to various chemicals which may be used in such slurries, and also substantially preventing the mixing of the scent slurry with paper, ink or other odors in the printed matter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.