Apparatus and method of manufacturing synthetic boards
US5093058A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1989 |
| Grant date | Mar 3, 1992 |
| Priority date | — |
| Expiry date | Mar 20, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27N9/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and apparatus for producing a synthetic board from cellulosic or lignocellulosic fibers is disclosed wherein a standard isocyanate binder is emulsified and immediately applied to the fibers before consolidation into a finished board product. The apparatus includes an emulsification and application nozzle comprising a diluent inlet, a binder inlet, a mixing section for emulsifying the diluent and the binder, and a spray nozzle for applying the binder/diluent emulsion to the fibers. The method includes supplying a binder stream, supplying a diluent stream, emulsifying the binder with the diluent and immediately applying the emulsion to the fibers. The method further includes flushing the binder/diluent emulsion using the diluent at the end of a binder application run to prevent curing of the emulsion and clogging of the apparatus. The present invention can be used to apply the binder/diluent emulsion to the fibers either in the blowline or downstream of the blowline, such as in the blender.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.