FIELD: process engineering.
SUBSTANCE: invention relates to woodworking and can be used for glued laminar materials (veneer, veneer boards, curved and flat work pieces). Production of filler comprises drying and mixing. Filler as hydrolytic lignin is processed with 4-10% solution of sodium thiosulphate (Na2S2O3) at adsorbent-to-solution ratio makes 1:3. This mix is mixed for 10 minutes at 100°C for 4 hours. Proposed glue composition comprises phenol-formaldehyde resin, paraformaldehyde and filler, that is, hydrolytic lignin processed with sodium thiosulphate.
EFFECT: better ecological properties, higher mechanical characteristics.
2 cl, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| ADHESIVE COMPOSITION FOR PRODUCING PLYWOOD AND METHOD OF PRODUCING FILLER THEREFOR | 2012 |
|
RU2495896C1 |
| ADHESIVE BONDED COMPOSITION FOR MANUFACTURE OF ADHESIVE BONDED LAYERED MATERIALS AND A METHOD OF ITS PRODUCTION FOR A NON-FILLER | 2004 |
|
RU2264426C1 |
| MODIFIED PHENOL-FORMALDEHYDE RESIN FOR THE MANUFACTURE OF WOOD GLOW MATERIALS AND THE METHOD OF MANUFACTURE OF THE MODIFICATION | 2016 |
|
RU2645132C2 |
| ADHESIVE COMPOSITION FOR ADHERING WOOD (CONTAINING LIGNIN) | 2021 |
|
RU2808623C2 |
| METHOD FOR PRODUCTION OF FIREPROOF PLYWOOD AND PLYWOOD BOARDS | 1997 |
|
RU2113982C1 |
| GLUING COMPOSITION FOR MAKING PLYWOOD AND FIBRE BOARDS | 0 |
|
SU735619A1 |
| FILLING PASTE FOR COVERING VENEER DEFECTS AND METHOD OF PRODUCING PLYWOOD USING FILLING PASTE | 2019 |
|
RU2708582C1 |
| GLUE FOR PLYWOOD | 0 |
|
SU857206A1 |
| METHOD OF PRODUCING LIQUID RESOL PHENOLFORMALDEHYDE RESINS | 1996 |
|
RU2123503C1 |
| ADHESIVE COMPOSITION FOR PRODUCTION OF GLUED LAYERED MATERIALS | 2012 |
|
RU2504567C1 |
