Vulcanized fiber sheet having a serrated cutting edge, a carton having said sheet adhered thereto, and a method of adhesion thereof
US6173876A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1996 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Dec 2, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T225/298
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention is a sheet having a serrated cutting edge attached to a carton case containing a roll of a cooking sheet such as a synthetic resin film, paper sheet and metallic foil, the sheet having a serrated cutting edge used for cutting the cooking sheet. The sheet having a serrated cutting edge is made of a vulcanized fiber. A moisture-proof film of a synthetic resin is formed on the two surfaces of a vulcanized fiber blank in order to make the most of the rigidity and elasticity which are advantages of the vulcanized fiber and decreases moisture absorption which is a disadvantage thereof. The invention also is a carton to which the sheet having a serrated cutting edge is adhered to as well as to a method of adhering the sheet having a serrated cutting edge to the carton by utilizing the moisture-proof film and ultrasonic adhesion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.