Improving the performance of wood joinery through vacuum impregnation of wood primers and preservatives in a single treatment process
The project addresses the need to improve the performance and durability of wooden joinery in order to make it more commercially attractive as a long-term investment. Wood joinery is losing market share to products made from alternative materials at the expense of its environmental credentials. The research will lead to a better public image of wood joinery by improving performance, resulting in a significant decrease of on-site failures.
The objective of this project is to make wood joinery in Europe more competitive by improving its stability and durability through a process of vacuum impregnation of the primer and preservative in a single treatment operation. This will be achieved in a three-stage experimental research programme by:
1) developing the process through a selection of compatible products and process schedules
2) verifying its technical benefits
3) developing its commercial feasibility by establishing an experimental treatment plant.
Six products were tested. Three pressure impregnation schedules were identified with realistic uptake loadings on pine. These trials also provided information on the ability of the formulations to produce a commercially acceptable and functional primer coating on the wood surface.
Two products wered ropped from the tests after failing to give a visually acceptable surface coating after pressure impregnantion. The four remaining were assessed for their wet and dry adhesion properties ,and evaluated for activation of the wood surface by flame plasma ionisation.
Short- and long-term bio-resistance trials were held, and the best results identified.
Two products were taken forward for demonstration purposes, and a programme of work was designed to demonstrate the practical and logisitic aspects of pressure impregnantion of primers, implemented, and showedthat a number of practical featuresand plant adjustmanets were needed before commercial application.
This project has contributed to:
improvements in processing and manufacturing efficiency
optimisation of water exclusion, stabilisation and glueing propertiesby application of low-viscosity primers
imporvements in durability of wooden joinery products
reduction of 'problematic' wood as manufacturing material in public opinion
recuction waste problems
imporvement of performance of exterior coatings
maximisation of stability.
FORESTRY, NON-FOOD PRODUCTS
Scientist responsible for the project
Mr PETER KACZMAR
HP14 4ND High Wycombe
United Kingdom (The) - GB
Phone: +44 1494 569600
Fax: +44 1494 565487
||Trada Technology Ltd
||01 September 2001
||1 500 025 €
|Total EC contribution
||878 208 €