PRODUCT DESCRIPTION
Multibond 2015 is a pre-catalyzed, cross linking polyvinyl acetate emulsion adhesive, formulated to have a longer open time which is often required in veneering applications. It has superior resistance to bleed-through even with thin or porous veneers. As with all Multibond 2000 and Multibond EZ-1 series products, Multibond2015 performs well for edge and face gluing in continuous flow and other high frequency applications.
PHYSICAL PROPERTIES
APPLICATION GUIDELINES
Moisture Content: Six to eight percent is the recommended moisture content for the gluing stock. High moisture content will dramatically increase the clamp time needed. Additionally, panel shrinkage may occur resulting in stress cracks or end joint delamination.
Stock Preparation: The preparation of the stock to be glued is extremely important. Joints cut from rip saws should be free of saw marks. They should also be straight and square. Moulded or jointed stock should be free of knife marks. Glazed or burnished joints will prevent adhesive penetration and should be guarded against. When possible, glue joints should be prepared and glued the same day.
Tolerances: Gluing stock should be uniform in thickness. Variation in thickness should not exceed ± 0.15 mm. Sanding to thickness should be performed using higher than 50 grit abrasives. Bowing of staves used in edge gluing should be kept to a minimum, typically less than 1.5 mm end to end.
Spread: Generally, 140-245 g/m² of glue line is adequate. Conveyorized spreaders are commonly used in edge-gluing applications. The use of a wool felt sleeve on the spreader roll can aid in obtaining a desirable spread and reducing excess glue usage.
Assembly Time: Assembly time can vary greatly depending on the adhesive used, glue spread, porosity and moisture content of stock, environmental conditions, etc. A small bead of adhesive squeeze-out around the perimeter of the panel when cold or hot pressing is desirable. A small bead of squeeze-out on the ends of edge-glued panels is desirable. Generally accepted assembly time is 5-10 minutes.
Edge and Face Gluing
Pressure: Pressure is dependent upon the species or material to be glued and joint preparation. Direct contact of the gluing surfaces must be made to obtain maximum strength. Suggested pressures for various wood densities are: low 7.0-10.5 Kg/cm²; medium 8.8-12.3 Kg/cm²; high 12.3-17.6 Kg/cm². Clamps for edge gluing should be spaced 20-40 cm apart and 5 cm from the end of the panel to evenly distribute pressure along the entire length of the glue line.
Veneering
Pressure: Pressure is dependent upon the species or material to be glued. Direct contact of the gluing surfaces must be achieved to obtain maximum strength. Suggested pressures for various substrates are; high pressure laminates 2.1-5.6 Kg/cm²; solid core stock 7.0-10.5 Kg/cm²; all veneer constructions 7.0-17.6 Kg/cm².
Press Time: Press time is dependent on the adhesive used, gluing stock type, moisture content of the stock and environmental conditions. Typical cold press times range from 30 minutes to two hours and should be determined under plant conditions. RF press times should be determined by in-plant testing on each machine. Hot press cure times can be estimated with this hot press schedule and verified with in-plant trials.
PERFORMANCE PROPERTIES
RELATED PRODUCTS
Multibond EZ-1 is designed for edge-gluing and laminating in cold press, hot press, and radio frequency. Multibond EZ-2 is similar to Multibond EZ-1. However, it may be used under colder plant conditions. Multibond 2015 is formulated for longer assembly times than Multibond EZ-1 and improved bleed through protection on thin veneers. Multibond 2025 permits longer assembly times than Multibond EZ-1 and is recommended for plywood and veneering.
STORAGE AND HANDLING
Store in tightly closed original container. Protect from freezing. Storing at temperatures above 25ºC will reduce the maximum storage time. If thickening, separation or settling occurs, the adhesive should be thoroughly mixed and will then be ready to use again.
Note: Discoloration of wood veneer products occurs occasionally. This phenomenon is very infrequent and ranges in appearance, color and may vary with the species of the veneer. Discoloration may appear during or after the manufacturing process. Among other things, environmental conditions in some manufacturing plants can contribute to discoloration. If veneer discoloration occurs, our representatives are prepared to visit and assist you in attempting to identify the causes of the staining and possible solutions. Because such discoloration is attributable to conditions beyond our control,Franklin International can assume no responsibility of liability for any discolorations that might occur.
Important Notice to Purchaser: Our recommendations, if any, for use of this product are based on tests believed to be reliable. The greatest care is exercised in the selection of our materials and in our manufacturing operations. However, we make no recommendation to use this product in any manner which conflicts with existing laws and/or patents and WE MAKE NO WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS PRODUCT OR ITS USE, INCLUDING MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE, THE MANUFACTURER IS NOT LIABLE FOR ANY CONSEQUENTIAL, INCIDENTAL OR SPECIAL DAMAGES OF ANY KIND. Revised 09/29/05© Copyright 2000. All rights reserved. Franklin International.