Treatment of wood veneers in plywood manufacturing
US4678532A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1985 |
| Grant date | Jul 7, 1987 |
| Priority date | — |
| Expiry date | Mar 21, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB27K3/36
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of pretreating wood veneers with a wetting agent which reduces the amount of adhesive required to bond the veneers together in plywood manufacturing. The wetting agent can be water or a liquid solution containing an elastomer or plasticizer which leaves a thin film of solids on the veneer surface after it evaporates. The wetting agent is in part absorbed by the veneer to inhibit absorption of liquid from the adhesive. Also, the solid film left on the veneer flows on the glue line and wets the adhesive when the veneer is hot pressed. This promotes flow and spreading of the adhesive, even if it is partially dry, and thus results in more effective use of the adhesive so that the adhesive usage is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.