Français
7. High frequency and microwaves
When you need to quickly dry an adhesive applied between solid parts, the best technique is high frequency.
7.1 Principle
When a piece of wood coated with water-based glue is subjected to a high-frequency (3 to 300 megahertz) or very high-frequency (microwave = 300 to 300,000 MHz) alternating electric field, the polar water atoms and cellulose molecules in the wood vibrate at the same high frequency, causing the material to heat up rapidly.
SCROLL TO TOP7.2 Expression of power loss and heating time
...
The Ultimate Scientific and Technical Reference
This article is included in
Material processing - Assembly
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
High frequency and microwaves
Door manufacturing
Standardization
French Standards Association (AFNOR)
http://www.afnor.org
- Wood-based panels – Determination of formaldehyde content – Extraction method, also known as the perforator method. - NF EN 120 - 10-92
- Classification des colles thermoplastiques pour bois à usages non structuraux. - NF EN 204 - 04-02
- Thin, long and oriented strand board (OSB) – Definitions, classification and requirements....
Manufacturers
(non-exhaustive list)
Machine manufacturers
Siempelkamp (Germany) http://www.siempelkamp.com
Dieffenbacher (Germany) http://www.dieffenbacher.de
The Ultimate Scientific and Technical Reference
