Apparatus and method for convergently applying polymer foam to substrate
US5979787A · kind A · utility
16Cited by
16References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 13, 1997 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Dec 13, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B7/1431
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention is a system of spraying coating on the surface of a substrate with a convergent spray gun that utilized separate pump and flow metering systems. Each part of a two part resin is pumped and metered separately. The third part which is a foaming agent and surfactant is also pumped and metered separately in a mix chamber. All three materials are mixed in the mix chamber and then atomized and combined with dry filler in the convergent zone of the spray gun. The quantity of the filler and the three part foaming resins are proportioned in order to maintain a predetermined ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.