Scored fiberboard having improved moldability
US5306539A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 1992 |
| Grant date | Apr 26, 1994 |
| Priority date | — |
| Expiry date | Feb 21, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249921
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A fiberboard, preferably made by consolidating a water-felted mat without added binder and being suitable for pressure-molding into a hardboard door facing having a high degree of fidelity to the contours of the die set, is incised on both the major face and the obverse face with incisions having a depth of from about 10% to about one third the thickness of the board. The incisions are aligned on lines that are preferably arranged at right angles across the face of the board. The lines are preferably spaced a maximum of about 0.5 inches apart, and the incisions on each line are discontinuous, preferably separated by a maximum of about 0.5 inches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.