VHB Acrylic Foam Tape 4905F Product Data Sheet Updated : Sept. 2002 Supersedes : March 1996 4905 is a clear acrylic VHB tape. It is colourless making it ideal for bonding transparent Product Description materials or for applications where a coloured bond line is unacceptable. These tapes have somewhat lower peel, tensile and shear performance than most other VHB due to their inherent softness. Acrylic Physical Properties Adhesive Type Not for specification purposes Thickness (ASTM D-3652) Tape 0.50 mm Liner 0.13 mm Total 0.63 mm 960 kg/m Density Filmic (Red) Release Liner Tape Colour Clear This tape product is clear in colour but NOT guaranteed to be optically clear. 24 months from date of despatch by 3M when stored in the Shelf Life original carton at 20C & 50 % Relative Humidity 21 N/10mm Performance Peel Adhesion to Characteristics Stainless Steel 90 peel room temp, 72 hr dwell, Not for specification purposes jaw speed 300mm/min 690 kPa Normal Tensile (T- Block) to Aluminium at room temp, 6.45 sq cm, jaw speed 50 mm/min Static Shear Strength 1000g at 22C sq inch overlap on Stainless Steel 1000 500g at 66C minutes 500g at 93C Temperature Performance 150 C Max (hours/minutes) 90 C Max Continuous (days/weeks) UV Light Resistance No change in clarity was seen after 346 hours QUV.2 Date : Sept. 2002 VHB Acrylic Foam Tape 4905F This product bonds to Painted surfaces and Bonding to Polypropylene Surfaces high energy surfaces varnishes should be evaluated. and rubbers is not such as glass, acrylic recommended. sheet and metals. 1. Bond strength is surfaces must be clean dry Initial tape application to Application Techniques dependent upon the and well unified. A typical surfaces at temperatures amount of adhesive-to- surface cleaning solvent is below 10C is not surface contact developed. isopropyl alcohol & water. recommended because the Firm application pressure Use proper safety adhesive becomes too firm develops better adhesive precautions for handling to adhere readily. However contact & thus improves solvents. once properly applied low bond strength. temperature holding is 3. Ideal tape application generally satisfactory. 2. To obtain optimum temperature range is 20C adhesion, the bonding to 40C. VHB Joining Systems are VHB Joining Systems are Galvanised surfaces are Applications suited for use in many suitable for bonding a potential problems and interior and exterior variety of substrates, should be carefully industrial applications. In including sealed wood, evaluated. many situations, they can many plastics, composites replace rivets, spot welds, and metals. Plastics which To prevent corrosion on liquid adhesives, and other can be a problem are copper and brass, only permanent fasteners. Each polyethylene, polypropylene, lacquer coated material product in the VHB family teflon, silicones and other should be used with VHB has specific strengths. low surface energy Joining Systems. These can include high materials. tensile, shear and peel Thorough evaluations are adhesion and resistance to Plasticised vinyl bonding is recommended when solvents, moisture and dependent upon the types bonding is required to any plasticiser migration. All and concentrations of questionable surface. VHB fasteners should be plasticisers which can thoroughly evaluated by the migrate into the adhesives user under actual use causing a reduction in bond conditions with intended strength 4945 is most substrates, especially if resistant to plasticiser expected use involved migration. extreme environmental conditions. 3M and VHB are trademarks of the 3M Company. Values presented have been determined by standard test methods and are average values not to be used for specification purposes. Our recommendations on the use of our products are based on tests believed to be reliable but we would ask that you conduct your own tests to determine their suitability for your applications. This is because 3M cannot accept any responsibility or liability direct or consequential for loss or damage caused as a result of our recommendations. 3M United Kingdom PLC 1996 Tapes & Adhesives 3M United Kingdom PLC Product Information : 3M Ireland Customer Service : 3M House, 3M House, Adelphi Centre, 28 Great Jackson Street, Tel 0870 60 800 50 Upper Georges Street, Tel (01) 280 3555 Manchester, Fax 0870 60 700 99 Dun Laoghaire,Co. Dublin, Fax (01) 280 3509 M15 4PA Ireland