Fine abrading with Scotch-Brite hand pad 7447 followed by good cleaningc. The four options for surface preparation are typically:Ī.
If paint changes, retesting of tape and surface preparationcombination may be necessary. Painted color exterior side Test specific panel paint to ensure suitability of a particular tape and surface Final clean with 50:50 mixture of isopropyl alcohol and water.Ĭ. If necessary, pre-clean properly with a detergent to remove oils commonly used in roll formingĪnd punching operations.b.
If aluminum is not oxidized, clean with 50:50 mixture of isopropyl alcohol and water.ģ. (Use 3M Scotch-Brite Hand Pad 7447 listed below.)b. Abrade, if necessary, to remove oxidation. If approved by testing, painted post may be coated with 3M Adhesion Promoter 111 as anĪlternative to fine abrading.2. (Use 3M Clean & Strip XT Disc listed below).b. Abrade down to bare metal to remove rust. Use adequate tape coverage and proper tape application techniques.Ī. 062" thick tape for panel-to-post tape and 0.45" thick tape for panel-to-panel tape at the overlap Use at least 1" wide tape if posts are 16" on centers.3. 062" Gray Red polyethylene film Panels to postswith white printingĢ. 045" Gray Red polyethylene film Panel-to-panel at theoverlap seamsĬV62F. Select appropriate 3M VHB Tape for specific materials and paint used.ģM VHB Tape Tape Tape ReleaseTape Thickness Color Liner ApplicationĬV45F. Roll down tape firmly both after tape application and then again after parts arebonded together.Ī.
If abrading surfaces is required to increase tape adhesion levels or adhesion buildrate, abrade only with a fine abrasive that is not coarser than 3M Scotch-BriteHand Pad 7447 or 180x grit sandpaper.Įnsure that all materials meet the required minimum tape application temperatureof 60F (15C) for 3M VHB Commercial Vehicle Tapes CV45F and CV62F.Īllow taped trailer or truck bodies to dwell for a minimum of 4 hours at 60F(15C) or higher before exposure to colder temperatures. Apply tape as soon as possible after cleaning toavoid contaminants. See 3Mtechnical bulletin Design Considerations for Smooth Sided Trailers. Contact your local 3M specialist for assistanceand possible tape adhesion strength testing.ĭesign framework and trim pieces such that panels are not constrained, but ratherare allowed to freely expand and contract with temperature differences. Use only an approved tape and surface preparation combination for the specificmaterials to be bonded together. The purpose ofthis technical bulletin is to assist with developing a standardized process to assemblesmooth sided trailers or truck bodies with 3M VHB Tape.ĭetermine suitability of these tapes for your particular application. Introduction Since 1980, manufacturers of commercial vehicles have been using 3M VHBTapes to attach sidewall panels to the framework of commercial vehicles such astrailers, truck bodies, ambulances, fire trucks, busses, and rail cars. 3Panel Bonding Procedureusing 3M VHB Tape
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