FIELD: process engineering.
SUBSTANCE: proposed plywood comprises sheets of veneer. Said sheets are glued together with the help of glue compounds based on "СФЖ"-3013-type phenol-formaldehyde resin. Additionally, said glue compound comprises modifying agent, i.e. extract of conifers cores extracted by water, or 3-5%-water solution of sodium hydroxide, or 3-5%-water solution of isopropanol, and paraformaldehyde.
EFFECT: reduced toxicity, better physicomechanical properties.
2 dwg, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| PLYWOOD | 1997 |
|
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|
RU2123503C1 |
| FIBRE COMPOSITION | 0 |
|
SU971978A1 |
