User manual 3M VHB TAPE PRIMERS TECH BULLETIN

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[. . . ] 3 VHBTM Tape Primers Technical Bulletin May, 2003 TM TM Primers Suggested for Use with 3M VHB Tapes This Technical Service Bulletin discusses the suggested primers for use in special situations with 3MTM VHBTM Acrylic Foam and Adhesive Transfer Tapes. Generally, primers are not needed to achieve high bond strength with VHB tapes, but some surfaces require additional treatment to bring the level of adhesion up to the capability of VHB tapes. Reference to Other VHB Tape Bulletins Additional information on surface preparation and primers is provided in bulletins entitled "Surface Preparation for VHB Tape Applications" (70-0704-8701-5), "Glass Bonding: VHB Tape and Silane Coupling Agents" (70-0702-9983-2) and "3MTM Tape Primer 94" (70-0709-3853-8). When to Use a Primer with VHB Tape Use of a primer is not necessary in most applications. However, if you have evaluated the full VHB tape product line and have not achieved desired adhesion level, a primer may help improve bond strength. [. . . ] Note that primers will usually work best with acrylic VHB tape adhesives, and not with the synthetic adhesives on VHB tapes 4952 or 4932. · Paints often yield similar results to plastics, and the guideline above should also apply. In addition to the VHB tape 4952, 3MTM VHBTM Tapes 4941 and 4945 would also be suggested for evaluation. Abrasion with a fine grit material such as 3MTM ScotchBriteTM 7447 Pads will also enhance adhesion to most paints. Carefully Evaluate Use of Primers It is very important for the user of the VHB tape and any primers to determine the suitability of the VHB tape, the primer, and the application process. Because of all the variables with these surfaces, it is important to run tests to ensure that all use requirements and expectations are met. Technical Bulletin VHB Tape Primers TM Primers for 3MTM VHBTM Tapes Surface Steel or Aluminum Copper, Brass, Bronze Concrete Brick Stone, ceramic tile Glass Wood (soft or hard) Particle board Plastics Powder paints E-coated paints Coil Coated Aluminum Molded Polyurethane Very flexible Vinyl Concern surface must be clean oxidation after bonding rough surface, moisture rough surface high humidity, moisture high humidity, moisture weak fiber layer on surface low surface strength additives, low adhesion low adhesion low adhesion low adhesion mold release, low adhesion plasticizer migration Suggested Primer none suggested lacquer or varnish 3MTM Rubber and Vinyl Spray 80 Adhesive 3M Rubber and Vinyl Spray 80 Adhesive Custom Pak Custom Pak 3M Rubber and Vinyl Spray 80 Adhesive, urethane paint 3M Rubber and Vinyl Spray 80 Adhesive, urethane paint 3MTM PrimerTM 94 3M Primer 94, 3MTM Scotch-GripTM Plastic Adhesive 1099, thinned in acetone 3M Primer 94, Scotch-Grip Plastic Adhesive 1099, thinned in acetone 3M Primer 94 3M Primer 94, Scotch-Grip Plastic Adhesive 1099, thinned in acetone 3MTM Scotch-GripTM Plastic Adhesive 2262, thinned in acetone VOC (g/l) See primer label See primer label See note below See note below See primer label See primer label See note below See note below See note below See note below See note below See note below See note below 196 Lancaster Synthesis, Inc. 3MTM FastbondTM 30 Contact Adhesive, varnish Fastbond 30 Contact Adhesive, varnish 3MTM VHBTM Tapes 4952/4932/5952/5925 VHB Tapes 4952/4932 or abrade w/3MTM VHBTM Tape 4950 VHB Tapes 4952/4932 or abrade w/VHB Tape 4950/5952/5925 3MTM VHBTM Tape 4941 abrade mold release off 3MTM VHBTM Tapes 4945 and 4941 (test for migr. ) 3M Rubber and Vinyl Spray 80 Adhesive Alternatives abrasion may clean surface architectural grade coatings Concrete sealer, paint Note: These primers contain greater than 250 g/l of volatile organic carbons (VOC). Please contact your local Air Quality Regulation to be sure these primers are compliant. Diluted 3MTM Scotch-GripTM Plastic Adhesive 2262 Scotch-Grip Adhesive 2262 can be a useful primer when thinned in acetone in a 1:5 or 1:10 ratio (e. g. , 1 part Scotch-Grip Adhesive 2262 to 5 parts solvent). This will work especially well for plasticized vinyl film. Dries quickly, can be wiped or brush applied. This thinned material contains 196 g/l VOC's when diluted in these ratios. Note: When working with solvents, primers, or other chemicals be sure to read the manufacturer's precautions and directions for use when handling such materials. Diluted 3MTM Scotch-GripTM Plastic Adhesive 1099 Scotch-Grip Adhesive 1099 can be useful as a primer for elastomeric materials when thinned in acetone in a 1:3 ratio (e. g. , 1 part Scotch-Grip Adhesive 1099 to 3 parts acetone). This solution dries quickly and can be wiped or brush applied. This thinned material contains zero VOC's when diluted in these ratios. Note: When working with solvents, primers, or other chemicals be sure to read the manufacturer's precautions and directions for use when handling such materials. 3MTM Tape Primer 94 3M Primer 94 has been developed to help promote adhesion to a wide variety of substrates. Careful evaluation is suggested to ensure performance is adequate for a particular use and application method. -2- Technical Bulletin VHB Tape Primers TM Precautionary Information Refer to manufacturers product label and Material Safety Data Sheet for safety and health information before using any solvents, primers, or other chemicals. For additional health and safety information, call 1-800-364-3577 or (651) 737-6501. For Additional Information To request additional product information or to arrange for sales assistance, call toll free 1-800-362-3550 or visit www. 3M. com/adhesives. [. . . ] If the 3M product is defective within the warranty period, your exclusive remedy and 3M's and seller's sole obligation will be, at 3M's option, to replace the product or refund the purchase price. Limitation of Liability Except where prohibited by law, 3M and seller will not be liable for any loss or damage arising from the 3M product, whether direct, indirect, special, incidental or consequential, regardless of the legal theory asserted, including warranty, contract, negligence or strict liability. ISO 9002 This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9002 standards. 3 Industrial Business Industrial Adhesives and Tapes Division 3M Center, Building 21-1W-10, 900 Bush Avenue St. Paul, MN 55144-1000 Recycled Paper 40% pre-consumer 10% post-consumer Printed in U. S. A. ©3M 2003 70-0704-8702-3 (5/03) -3- [. . . ]

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