PRODUCT DESCRIPTION
Multibond 4000 FF DEV is a formaldehyde-free, one component polyvinyl acetate emulsion product that meets DINEN 204 D3 and ANSI HPVA EF 2002 Type II water-resistance. Multibond 4000 FF DEV was designed for use with hardwood plywood veneered products that are expected to meet stringent, formaldehyde emission standards. This product can be hot pressed, cold pressed and finger jointed. Like all adhesives, proper gluing practices are needed to achieve stated performance.
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 ± 0.005 inches. Sanding to thickness should be performed using higher than 50 grit abrasives. For products that cannot be uniform in thickness, greater amounts of spread and pressure will be required.
Spread: Generally, 35-50 pounds per 1,000 square feet of glue line (6-9 wet mils or 180-260 ft²/gal) is adequate.(The greater the thickness variation and roughness of the substrates, the greater the need for higher spreads.)
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 bottom panel in the stack is desirable. Generally accepted assembly time is 5-10 minutes
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 30-80 psi; solid core stock 100-150 psi; all veneer constructions 150-250 psi. Rougher veneer will require higher press pressures. Good surface contact is required to get best performance.(Performance testing of manufactured parts is recommended to ensure satisfactory results.)
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. Press time is dependent on the adhesive used, gluing stock type, moisture content of the stock and environmental conditions. This hot press schedule is provided as a recommended starting point. In plant testing is recommended especially for temperatures and substrate thicknesses beyond this chart.
PERFORMANCE PROPERTIES
STORAGE AND HANDLING
Shelf Life: Best used within 6 months of date of manufacture.
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 PRODUCTOR 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 09/24/08.Copyright © 2008. All rights reserved. Franklin International.