Adhesives Sealants Manufacturing Process and Technology BooksAmong the Amino resins, Melamine formaldehyde-Melamine Urea formaldehyde resins, possess better water resistance properties compared to Uf resins. Studies have been made to develop MF/MUF resin adhesives for the manufacture of flooring tiles from bamboo, Bamboo laminates and also for finger jointing of Saw mill waste timbers. The required percentage of hardener for cold setting at room temperature have been worked out. The process parameters for manufacture laminates/tiles like spread, Assembly time, hot press temperature, pressure, time have been optimized.
RESINS FOR PREPRESSING TECHNIQUES IN PANEL MAKING :
(a) UF resin adhesives:
Method for the manufacture of UF resin suitable to adopt prepressing has been evolved and detailed process parameters for prepressing and hot pressing have been worked out. Few factories producing plywood have adopted the prepressing technique.
(b) PF resin Adhesives:
Process details for the manufacture of PF resin by adopting conventional as well as by modified methods suitable for pre-pressing plywood have been worked out. Factories have successfully adopted this technique as it gives improved bond, increased productivity at reduced costs, production of defect free panels, etc.