FIELD: process engineering.
SUBSTANCE: invention relates to woodwork, particularly to processing of veneer by fire retardant. This method comprises spraying of aqueous solution of fire retardant based on ammonium salt of orthophosphoric acid on veneer sheet surface. Spraying is performed at solution temperature of 40-50°C in at least two steps with intermediate holding of veneer sheet between said steps and final drying after final step.
EFFECT: better penetration in veneer structure without lamination and bulging.
12 cl, 1 dwg, 1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| IMPREGNATING FIREPROOF COMPOSITION | 1999 |
|
RU2147028C1 |
| METHOD OF PREPARING FIRE-RETARDANT COMPOSITION | 2001 |
|
RU2204582C2 |
| METHOD FOR IMPREGNATION OF VENEER | 0 |
|
SU1734573A3 |
| THERMOSTABLE COMPOSITIONAL MATERIAL AND METHOD FOR OBTAINING THEREOF | 2014 |
|
RU2573468C2 |
| COMPOSITION FOR IMPARTING LOW COMBUSTIBILITY TO PAPER | 0 |
|
SU1030449A1 |
| 0 |
|
SU315602A1 | |
| METHOD OF PRODUCING FLAME-PROOF PLYWOOD | 0 |
|
SU1329967A1 |
| METHOD FOR PRODUCTION OF IMPREGNATED VENEER | 2021 |
|
RU2788522C1 |
| POLYMERISATION-IMPREGNATION SOLUTION FOR WOOD MODIFICATION | 2011 |
|
RU2479422C2 |
| METHOD FOR PRODUCTION OF FIREPROOF PLYWOOD AND PLYWOOD BOARDS | 1997 |
|
RU2113982C1 |
