3M 4952

VHB™ Tape Specialty Tapes Technical Data October 2014 Product Description: 3M™ VHB™ Tapes provide the convenience and simplicity of a tape fastener and are ideal for use in many interior and exterior bonding applications. In many situations, they can replace rivets, spot welds, liquid adhesives and other permanent fasteners. These 3M™ VHB™ Tapes are made with acrylic foam which is viscoelastic in nature. This gives the foam energy absorbing and stress relaxing properties which provides these tapes with their unique characteristics. The acrylic chemistry provides outstanding durability performance. These tapes utilize a variety of specific foam, adhesive, color and release liner types to provide each product/family with specific features. These features can include adhesion to specific or a broad range of materials, conformability, high tensile strength, high shear and peel adhesion, resistance to plasticizer migration, and UL746C recognition. All 3M™ VHB™ Tapes have excellent durability and excellent solvent and moisture resistance. The tapes included in this data page have unique performance features that are not typically required in most common applications. Please refer to “3M™ VHB™ Tapes” technical data sheet for applications that do not require the special features incorporated in these specialty tapes. 3M™ VHB™ Tape Products 4950 Family This family has general purpose adhesive on both sides of firm type foam. This family is typically used on metal, glass and high surface energy plastic substrates. Available in white and black. 4945 Family This family has multi-purpose adhesive on both sides of firm foam. 4910 Family This family of clear tapes is excellent for applications where clear or colorless is desired. The general purpose adhesive on both sides is suitable for high surface energy substrates. Tape Number 4914 4920 4929 4930(F) 4949 4950 4955 4959(F) Color White White Black White Black White White White Thickness in (mm) 0.010 (0.25) 0.015 (0.4) 0.025 (0.6) 0.025 (0.6) 0.045 (1.1) 0.045 (1.1) 0.080 (2.0) 0.120 (3.0) Tape Number 4945 4946 Color White White Thickness in (mm) 0.045 (1.1) 0.045 (1.1) Tape Number 4905 4910 Color Clear Clear Thickness in (mm) 0.020 (0.5) 0.040 (1.0) Tape Number 4951 4943F 4957F Color White Gray Gray Thickness in (mm) 0.045 (1.1) 0.045 (1.1) 0.062 (1.6) Tape Number 4932 4952 Color White White Thickness in (mm) 0.025 (0.6) 0.045 (1.1) Tape Number 4611 4646 4655 Color Dark Gray Dark Gray Dark Gray Thickness in (mm) 0.045 (1.1) 0.025 (0.6) 0.062 (1.6) Tape Number 4618 4622 4624 Color White White White Thickness in (mm) 0.025 (0.6) 0.045 (1.1) 0.062 (1.6) 4951 Family This family of tapes is based around the low temperature appliable acrylic adhesive system, utilized on both firm and conformable foam types. These products are suitable for high surface energy substrates. Available in white (firm foam) and gray (conformable foam). 4952 Family This family utilizes the low surface energy adhesive on a firm foam. 4611 Family T his family has a general purpose adhesive on both sides of firm foam. This family of tapes is typically used on metal substrates, and has the added feature of high temperature resistance, making it often suitable for bonding prior to high temperature paint processing. 4622 Family This family has general purpose adhesive on the face side (the side that typically would be bonded first) and multi-purpose adhesive on the liner side (the side exposed when the release liner is removed) of a conformable foam. Available in white. (P) or (F) after the product number designate that both a paper and film liner product version are available. [e.g. 4930 (paper liner) and 4930F (film liner). See page 2 for specific details. -1- 3M™ VHB™ Tape Specialty Tapes Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. Typical Physical Properties 3M™ VHB™ Tapes Foam Type Release Liner Density lb/ft3 (kg/m3) Type Thickness Inches (mm) Color Color 4914 White 0.010 (0.25) ± 15% Gen Purp Firm 50 (800) DK Paper 0.003 (0.08) White (printed) 4920 White 0.015 (0.4) ± 15% Gen Purp Firm 50 (800) DK Paper 0.003 (0.08) White (printed) 4929 Black 0.025 (0.6) ± 15% Gen Purp Firm 50 (800) Polyester 0.002 (0.05) Clear 4930 White 0.025 (0.6) ± 15% Gen Purp Firm 50 (800) DK Paper 0.003 (0.08) White (printed) 4930F White 0.025 (0.6) ± 15% Gen Purp Firm 50 (800) PE Film 0.005 (0.13) Red 4949 Black 0.045 (1.1) ± 10% Gen Purp Firm 50 (800) Polyester 0.002 (0.05) Clear 4950 White 0.045 (1.1) ± 10% Gen Purp Firm 50 (800) DK Paper 0.003 (0.08) White (printed) 4955 White 0.080 (2.0) ± 10% Gen Purp Firm 50 (800) Polyester 0.002 (0.05) Clear 4959 White 0.120 (3.0) ± 10% Gen Purp Firm 50 (800) Polyester 0.002 (0.05) Clear 4959F White 0.120 (3.0) ± 10% Gen Purp Firm 50 (800) PE Film 0.005 (0.13) Red 4945 White 0.045 (1.1) ± 10% Multi-Purp Firm 50 (800) DK Paper 0.003 (0.08) White (printed) 4946 White 0.045 (1.1) ± 10% Multi-Purp Firm 50 (800) PE Film 0.005 (0.13) Clear 4905 Clear 0.020 (0.5) ± 15% Gen Purp Sollid 60 (960) PE Film 0.005 (0.13) Red (printed) 4910 Clear 0.040 (1.0) ± 10% Gen Purp Sollid 60 (960) PE Film 0.005 (0.13) Red (printed) 4951 White 0.045 (1.1) ± 10% Low Temp Appl Firm 50 (800) Polyester 0.002 (0.05) Clear 4943F Gray 0.045 (1.1) ± 10% Low Temp Appl Conform 45 (720) Polyester 0.002 (0.05) Clear 4957F Gray 0.062 (1.6) ± 10% Low Temp Appl Conform 45 (720) Polyester 0.002 (0.05) Clear 4932 White 0.025 (0.6) ± 15% LSE Firm 50 (800) DK Paper 0.003 (0.08) White (printed) 4952 White 0.045 (1.1) ± 10% LSE Firm 50 (800) DK Paper 0.003 (0.08) White (printed) 4611 Dk Gray 0.045 (1.1) ± 10% Gen Purp Firm 52 (840) PE Film 0.005 (0.13) Red 4646 Dk Gray 0.025 (0.6) ± 15% Gen Purp Firm 52 (840) PE Film 0.005 (0.13) Red 4655 Dk Gray 0.062 (1.6) ± 10% Gen Purp Firm 52 (840) PE Film 0.005 (0.13) Red 4618 White 0.025 (0.6) ± 15% Gen/Multi Purp Conform 45 (720) PE Film 0.004 (0.10) Green 4622 White 0.045 (1.1) ± 10% Gen/Multi Purp Conform 45 (720) PE Film 0.004 (0.10) Green 4624 White 0.062 (1.6) ± 10% Gen/Multi Purp Conform 45 (720) PE Film 0.004 (0.10) Green 462 2 4 61 1 49 52 4951 4950 Number 4945 Adhesive Type 4910 Family Adhesive and Foam Tape Thickness Inches (mm) Tolerance -2- 3M™ VHB™ Tape Specialty Tapes Available Sizes Maximum Roll Length Width 1/4"up to 3/8" (6.4mm up to 9.5mm) Width >3/8" up to 1/2" (>9.5mm up to 12.7mm) Width 1/2" and wider (12.7mm and wider) yards (meters) yards (meters) yards (meters) 48 (1219) 72 (65.8) 144 (131.7) 360 (329.2) 0.25 (6) 48 (1219) 144 (131.7) 175 (160.0) 360 (329.2) 0.25 (6) 48 (1219) 72 (65.8) 108 (98.8) 175 (160.0) 72 (65.8) 0.25 (6) 48 (1219) 72 (65.8) 108 (98.8) 175 (160.0) 36 (32.9) 0.25 (6) 48 (1219) 72 (65.8) 108 (98.8) 144 (131.7) 0.045 (1.1) 36 (32.9) 0.25 (6) 48 (1219) 72 (65.8) 108 (98.8) 144 (131.7) 0.062 (1.6) 36 (32.9) 0.25 (6) 46 (1168) 72 (65.8) 72 (65.8) 108 (98.8) Tape Thickness Standard Length Minimum Width Maximum Width inches (mm) yards (meters) inches (mm) inches (mm) 0.010 (0.25) 72 (65.8) 0.25 (6) 0.015 (0.4) 72 (65.8) 0.020 (0.5) 72 (65.8) 0.025 (0.6) 0.040 (1.0) 0.080 (2.3) 36 (32.9) 0.25 (6) 46 (1168) 36 (32.9) 36 (32.9) 72 (65.8) 0120 (3.0) (4959) 36 (32.9) 0.5 (13) 46 (1168) N/A N/A N/A N/A 36 (32.9) 0120 (3.0) (4959F) 36 (32.9) 0.25 (6) 46 (1168) 36 (32.9) 36 (32.9) 36 (32.9) Slitting Tolerance Standard slitting tolerance ± 1/32 inch (± 0.031 inch, ± 0.79 mm). Precision slitting with slitting tolerance of ± 1/64 inch (± 0.016 in., ± 0.41 mm) is available on select products with minimum order of full web increments. Core Size All products are provided on a 3 inch ID Core (76.2 mm) Converted Parts In addition to standard and custom roll sizes available from 3M through the distribution network, 3M™ VHB™ Tapes are also available in limitless shapes and sizes through the 3M Converter network. For additional information, contact 3M Converter Markets at 1-800-223-7427 or on the web at www.3M.com/converter. Shelf Life All 3M™ VHB™ Tapes have a shelf life of 24 months from date of shipment when stored at 40°F to 100°F (4°C to 38°C) and 0-95% relative humidity. The optimum storage conditions are 72°F (22°C) and 50% relative humidity. Performance of tapes is not projected to change even after shelf life expires; however, 3M does suggest that 3M™ VHB™ Tapes are used prior to the shelf life date whenever possible. The manufacturing date is available on all 3M™ VHB™ Tape cores as the lot number. The lot number, typically a 4 digit code, is a Julian date (Y D D D). The first digit refers to the year of manufacture, the last 3 digits refer to the days after January 1. Example: A lot number of 9266 would translate to a date of manufacture of Sept. 22 (266th day of year) in 2009. On most products this is found as the 4 digits after the “9” following the product number. For tapes printed continuously around the core (e.g. 3M™ VHB™ Tape 5952 family) the lot number typically will be the string of 4 digits preceding the product number. Special Cases: Plasticized Vinyl – Plasticizers compounded in soft vinyl can migrate into adhesives and significantly change their performance characteristics. 3M™ VHB™ Tapes 4945 family has very good plasticizer resistance and adhesion to many vinyl formulations. Because of the wide variation in vinyl formulations, however, evaluation by the user must be conducted with the specific vinyl used to ensure that performance will be satisfactory over time. Problems related to plasticizer migration can often be predicted by accelerated aging of assembled parts at 150°F (66°C) for one week). -3- 3M™ VHB™ Tape Specialty Tapes Typical Performance Characteristics Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. 3M™ VHB™ Tapes Dynamic Adhesion Performance Thickness Inches 90° Peel Adhesion lb/in N/cm Normal Tensile lb/in2 kPa Dynamic Overlap Shear lb/in2 kPa 4914 White 0.010 13 (23) 130 (900) 130 (900) 4920 White 0.015 15 (26) 160 (1100) 100 (690) 4929 Black 0.025 20 (35) 160 (1100) 100 (690) 4930(F) White 0.025 20 (35) 160 (1100) 100 (690) 4949 Black 0.045 25 (44) 140 (970) 80 (550) 4950 White 0.045 25 (44) 140 (970) 80 (550) 4955 White 0.080 20 (35) 95 (660) 70 (480) 4959(F) White 0.062 20 (35) 75 (520) 55 (380) 4945 White 0.045 25 (44) 140 (970) 80 (550) 4946 White 0.045 25 (44) 140 (970) 80 (550) 4905 Clear 0.020 12 (21) 100 (690) 70 (480) 4910 Clear 0.040 15 (26) 100 (690) 70 (480) 4951 White 0.045 18 (32) 110 (760) 80 (550) 4943F Gray 0.045 20 (35) 85 (590) 70 (480) 4957F Gray 0.062 20 (35) 75 (520) 70 (480) 4932 White 0.045 20 (35) 100 (690) 100 (690) 4952 White 0.045 25 (44) 80 (550) 80 (550) 4611 Dk Gray 0.045 18 (32) 90 (620) 65 (450) 4646 Dk Gray 0.025 15 (26) 100 (690) 80 (550) 4655 Dk Gray 0.062 18 (32) 80 (550) 60 (410) 4916 White 0.025 17 (30) 85 (590) 80 (550) 4622 White 0.045 20 (35) 70 (480) 65 (450) 4624 White 0.062 20 (35) 55 (380) 60 (410) 462 2 461 1 495 2 4951 4950 4945 Product Number Color 4910 Family 90° Peel Adhesion - Based on ASTM D3330 -To stainless steel, room temperature, jaw speed 12 in/min (304.8 mm/min). Average force to remove is measured. XXXXX 72 hour dwell. XXXXX Normal Tensile (T-Block Tensile) - ASTM D-897 - To aluminum, room temperature, 1 in2 (6.45 cm2), jaw speed 2 in/min (50.8 mm/min) Peak force to separate is measured. 72 hour dwell. 2 2 Dynamic XXXXXOverlap Shear - ASTM D-1002 - To stainless steel, room temperature, 1 in (6.45 cm ), jaw speed 0.5 in/min (12.7 mm/min) Peak force to separate is measured. 72 hour dwell. -4- 3M™ VHB™ Tape Specialty Tapes Typical Performance Characteristics Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. Static Shear 3M™ VHB™ Tapes Thickness Inches 72°F (22°C) 150°F (66°C) 200°F (93°C) 250°F (121°C) 350°F (177°C) Short Term Long Term (Minutes, Hours) (Days, Weeks) °F (°C) °F (°C) 4914 White 0.010 1500 500 500 300 (149) 200 (93) 4920 White 0.015 1500 500 500 300 (149) 200 (93) 4929 Black 0.025 1500 500 500 300 (149) 200 (93) 4930(F) White 0.025 1500 500 500 300 (149) 200 (93) 4949 Black 0.045 1500 500 500 300 (149) 200 (93) 4950 White 0.045 1500 500 500 300 (149) 200 (93) 4955 White 0.080 1500 1000 750 750 750 400 (204) 300 (149) 4959(F) White 0.120 1500 1000 750 750 750 400 (204) 300 (149) 4945 White 0.045 1500 500 500 300 (149) 200 (93) 4946 White 0.045 1500 500 500 300 (149) 200 (93) 4905 Clear 0.020 1000 500 500 300 (149) 200 (93) 4910 Clear 0.040 1000 500 500 300 (149) 200 (93) 4951 White 0.045 1250 500 500 300 (149) 200 (93) 4943F Gray 0.045 1000 500 500 300 (149) 200 (93) 4957F Gray 0.062 1000 500 500 300 (149) 200 (93) 4932 White 0.025 1500 500 200 (93) 160 (71) 4952 White 0.045 1500 500 200 (93) 160 (71) 4611 Dk Gray 0.045 1500 750 750 750 750 450 (232) 300 (149) 4646 Dk Gray 0.025 1500 750 750 750 750 450 (232) 300 (149) 4655 Dk Gray 0.062 1500 750 750 750 750 450 (232) 300 (149) 4616 White 0.025 1000 250 250 250 (121) 200 (93) 4622 White 0.045 1000 250 250 250 (121) 200 (93) 4624 White 0.062 1000 250 250 250 (121) 200 (93) 462 2 4 6 11 4 952 4951 4950 4945 Product Number Color 4910 Family Temperature Tolerance Static Shear - ASTM D3654 - To stainless steel, tested at various temperatures and gram loadings. 0.5 in2 (3.23 cm2). Will hold listed weight for 10,000 minutes (approximately 7 days). Conversion: 1500 g/0.5 in2 equals 6.6 lb/in2; 500 g/0.5 in2 = 2.2 lb/in2. Short Term Temperature Tolerance - No change in room temperature dynamic shear properties following 4 hours conditioning at indicated temperature with 100 g/static load. (Represents minutes, hours in a process type temperature exposure). Long Term Temperature Tolerance - Maximum temperature where tape supports at least 250 g load per 0.5 in2 in static shear for 10,000 minutes. (Represents continuous exposure for days or weeks). -5- 3M™ VHB™ Tape Specialty Tapes Additional Typical Performance Characteristics Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. 4950 3M™ VHB™ Tape 4910 4611 Units Test Standard Dielectric Constant 2.28 1.99 3.21 2.68 2.80 2.43 at 1 kHz at 1MHz ASTM D150 ASTM D150 Dissipation Factor 0.0227 0.0370 0.0214 0.0595 0.0130 0.0564 at 1 kHz at 1MHz ASTM D150 ASTM D150 Dielectric Breakdown Strength 18 (460) 25 (630) 13 (330) V/µm (V/mil) Thermal Conductivity (k value) 0.09 (0.6) 0.16 (1.1) 0.11 (0.8) W/mK (BTU•in/hr•ft •°F) Volume Resisitivity 1.5 x 1015 3.1 x 1015 1.4 x 1015 Ω-cm ASTM D257 Surface Resisitivity >10 Ω/sq ASTM D257 Water Vapor Transmission Rate 14.0 g/m •day ASTM F1249 at 38°C/1000% RH >10 16 16 >10 ASTM D140 2 16 2 Thermal Properties of Modeling Thermal Coefficient of Expansion Shear Modulus (at 25°C, 1 Hz) Poisson’s Ratio 180 (100) 6 x 105 0.49 100 Category QOQW2 Component - Polymeric Adhesive Systems, Electrical Equipment 4914, 4920, 4930, 4950 Substrates Temperature Rating Minimum Maximum Solvent and Fuel Resistance 3M™ VHB™ Tapes UL746C Listings - File MH 17478 3M™ VHB™ Tapes/ Product Families 10-6 m/m/°C (10-6 in/in/°F) Pa Aluminum, Galvanized Steel, Enameled Steel, Stainless Steel, Ceramic, Glass/Epoxy -35°C PBT -35°C 90°C ABS, Polycarbonate, Rigid PVC -35°C 75°C 110°C 4920, 4930, 4950, Acrylic -35°C 90°C 4955, 4959, 4959F Glass / Galvanized Steel*, Glass / Glass*, Galvanized Steel / Aluminum*, Aluminum / Aluminum* -35°C 120°C 4945 Phenolic, Aluminum, Galvanized Steel, Alkyd Enamel, Enameled Steel -35°C 110°C ABS, Polycarbonate, Polyamide, Stainless Steel, Acrylic/Polyurethane Paint, Polyester Paint -35°C 90°C 100 % Adhesive Retention 90 90 80 80 70 70 60 60 50 50 40 40 30 30 20 20 10 10 0 Unplasticized PVC -35°C 75°C 4905, 4910 Polycarbonate, Aluminum, Acrylic/Polyurethane Paint -35°C 90°C 4611, 4646, 4655 Stainless Steel, Aluminum, Galvanized Steel, Glass, Glass/Epoxy, Phenolic -35°C 110°C Nylon, Polycarbonate -35°C 90°C ABS, Rigid PVC -35°C 75°C * Substrates can be used with or without primer(s)/Coating. 3M Silane Coating, 3M Adhesion Promoter 4298UV and 3M Tape Primer 94 are used with glass substrate. 3M Primer AP111, 3M Adhesion Promoter 4298UV and 3M Tape Primer 94 are used with aluminum and galvanized steel substrates. Water Salt Water Hydraulic Fluid 10W30 Motor Oil Glycol Antifreeze Kerosene Isopropyl Alcohol Jet Fuel Gasoline MEK 0 Test Method • Tape between stainless steel and aluminum foil • 72 hours dwell at room temperature • Solvent immersion for 72 hours • Test within 45 minutes after removing from solvent • 90° peel angle • 12 in/min rate of peel Outgassing • Peel adhesion compared to control 3M™ VHB™ Tapes % TML %VCM %WVR 4930 4932 4945 0.77 2.41 1.24 0.01 0.66 0.01 0.21 0.23 0.19 TML - Total Mass Loss VCM - Volatile Condensible Materials WVR - Water Vapor Regained NASA Reference Publication, “Outgassing Data for Selecting Spacecraft Materials”, (11/18/2004) Available online at http://outgassing.nasa.gov Note:  Continuous submersion in chemical solutions is not recommended. The above information is presented to show that occasional chemical contact should not be detrimental to tape performance in most applications in ordinary use. -6- 3M™ VHB™ Tape Specialty Tapes Design and Tape Selection Considerations Choose the right tape for the substrate: Adhesives must flow onto the substrate surfaces in order to achieve intimate contact area and allow the molecular force of attraction to develop. The degree of flow of the adhesive on the substrate is largely determined by the surface energy of the substrate. Adhesive Adhesive — Substrate High surface energy — Substrate Low surface energy This illustration demonstrates the effect of surface energy on adhesive interfacial contact. High surface energy materials draw the adhesive closer for high bond strength. Relationship of Adhesion and Surface Energy for 3M™ VHB™ Tape Adhesive Families 4950 Family 4945 Family Generally good adhesion 4910 Family 4951 Family 4952 Family – Adhesion to specific substrates is less dependent on surface energy Primer may be needed for good adhesion 4611 Family 4622 Family 1100-400 50-42 (High) 39-38 37-36 (Medium) 33-18 (Low) Surface Energy (Dynes/cm) Aluminum Stainless Steel Copper Zinc Tin Lead Anodized Aluminum Glass Polyimide Phenolic Nylon Alkyd Enamel Polyester Epoxy Paint Polyurethane ABS Polycarbonate PVC PPE Acrylic PU Enamel Powder Paint PVA Polystyrene Acetal PVDF Paint Powder Paint EVA Polyethylene Polypropylene PVF Silicone PTFE NOTES: There are a wide variety of formulations, surfaces finishes and surface treatments available on substrate materials which can affect adhesion. This chart is intended to provide only a rough estimate of the adhesion levels which can be expected on some common materials relative to a reference surface such as aluminum. Foam type can affect and/or limit maximum adhesive strength. Use the right tape thickness: The necessary thickness of tape depends on the rigidity of substrates and their flatness irregularity. While the 3M™ VHB™ Tapes will conform to a certain amount of irregularity, they will not flow to fill gaps between the materials. For bonding rigid materials with normal flatness, consider use of tapes with thickness of 45 mils (1.1 mm) or greater. As the substrate flexibility increases thinner tapes can be considered. Use the right amount of tape: Because 3M™ VHB™ Tapes are viscoelastic by nature their strength and stiffness is a function of the rate at which they are stressed. They behave stronger with relatively faster rate of stress load (dynamic stresses) and will tend to show creep behavior with stress load acting over a long period of time (static stresses). As a general rule, for static loads, approximately four square inches of tape should be used for each pound of weight to be supported in order to prevent excessive creep. For dynamic loads, the dynamic performance characteristics provided on page 4 should be useful, factoring in the appropriate safety factors. Allow for thermal expansion/contraction: 3M™ VHB™ Tapes can perform well in applications where two bonded surfaces may expand and contract differentially. Assuming good adhesion to the substrates, the tapes can typically tolerate differential movement in the shear plane up to 3 times their thickness. Bond Flexibility: While an advantage for many applications where allowing differential movement is a benefit, the tape bonds are typically more flexible than alternative bonding methods. Suitable design modifications or periodic use of rigid fasteners or adhesives may be needed if additional stiffness is required. Severe Cold Temperature: Applications which require performance at severe cold temperatures must be thoroughly evaluated by the user if the intended use will subject the tape product to high impact stresses. A technical bulletin “3M™ VHB™ Tape Cold Temperature Performance” (70-0707-3991-0) is available for additional information. -7- 3M™ VHB™ Tape Specialty Tapes Application Techniques Clean: Most substrates are best prepared by cleaning with a 50:50 mixture of isopropyl alcohol (IPA*) and water prior to applying 3M™ VHB™ Tapes. Exceptions to the general procedure that may require additional surface preparation include: • Heavy Oils: A degreaser or solvent-based cleaner may be required to remove heavy oil or grease from a surface and should be followed by cleaning with IPA/water. • Abrasion: Abrading a surface, followed by cleaning with IPA/water, can remove heavy dirt or oxidation and can increase surface area to improve adhesion. Abrasion is not suggested with 3M™ VHB™ Tapes 4932 and 4952. • Adhesion Promoters: Priming a surface can significantly improve initial and ultimate adhesion to many materials such as plastics and paints. • Porous surfaces: Most porous and fibered materials such as wood, particleboard, concrete, etc. need to be sealed to provide a unified surface. • Unique Materials: Special surface preparation may be needed for glass and glass-like materials, copper and copper containing metals, and plastics or rubber that contain components that migrate (e.g. plasticizers). Refer to 3M Technical Bulletin “Surface Preparation for 3M™ VHB™ Tape Applications” for additional details and suggestions. (70-0704-8701-5) *Note: These cleaner solutions contain greater than 250 g/l of volatile organic compounds (VOC). Please consult your local Air Quality Regulations to be sure the cleaner is compliant. When using solvents, be sure to follow the manufacturer’s precautions and directions for use when handling such materials. Pressure: Bond strength is dependent upon the amount of adhesive-to-surface contact developed. Firm application pressure develops better adhesive contact and helps improve bond strength. Typically, good surface contact can be attained by applying enough pressure to insure that the tape experiences approximately 15 psi (100 kPa) pressure. Either roller or platen pressure can be used. Note that rigid surfaces may require 2 or 3 times that much pressure to make the tape experience 15 psi. Temperature: Ideal application temperature range is 70°F to 100°F (21°C to 38°C). Pressure sensitive adhesives use viscous flow to achieve substrate contact area. Minimum suggested application temperatures: • 50°F (10°C): 3M™ VHB™ Tapes 4950, 4910, 4952, 4611, 4622 families. • 60°F (15°C): 3M™ VHB™ Tape 4945 family. • 32°F (0°C): 3M™ VHB™ Tape 4951 family. Note: Initial tape application to surfaces at temperatures below these suggested minimums is not recommended because the adhesive becomes too firm to adhere readily. However, once properly applied, low temperature holding is generally satisfactory. To obtain good performance with all 3M™ VHB™ Tapes, it is important to ensure that the surfaces are dry and free of condensed moisture. Time: After application, the bond strength will increase as the adhesive flows onto the surface (also referred to as “wet out”). At room temperature approximately 50% of ultimate bond strength will be achieved after 20 minutes, 90% after 24 hours and 100% after 72 hours. This flow is faster at higher temperatures and slower at lower temperatures. Ultimate bond strength can be achieved more quickly (and in some cases bond strength can be increased) by exposure of the bond to elevated temperatures (e.g. 150°F [66°C] for 1 hour). This can provide better adhesive wetout onto the substrates. Abrasion of the surfaces or the use of primers/ adhesion promoters can also have the effect of increasing bond strength and achieving ultimate bond strength more quickly. -8- Bond Typical Build vs. Time PERCENT OF FULL BOND 100 80 60 40 20 ROOM TEMP 0 20 MIN 1 HOUR 50°F 24 HOURS 150°F or ABRADE 72 HOURS 3M™ VHB™ Tape Specialty Tapes Technical Information The technical information, recommendations and other statements contained in this document are based upon tests or experience that 3M believes are reliable, but the accuracy or completeness of such information is not guaranteed. Product Use Many factors beyond 3M’s control and uniquely within user’s knowledge and control can affect the use and performance of a 3M product in a particular application. Given the variety of factors that can affect the use and performance of a 3M product, user is solely responsible for evaluating the 3M product and determining whether it is fit for a particular purpose and suitable for user’s method of application. Limitied Remedy 3M warrants for 24 months from the date of shipment that 3M™ VHB™ Tape will be free of defects in material and manufacture. 3M MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOTLIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. This limited warranty does not cover damage resulting from the use or inability to use 3M™ VHB™ Tape due to misuse, workmanship in application, or application or storage not in accordance with 3M recommended procedures. AN APPLICATION WARRANTY EXPRESSLY APPROVED AND ISSUED BY 3M IS AN EXCEPTION. THE CUSTOMER MUST APPLY FOR A SPECIFIC APPLICATION WARRANTY AND MEET ALL WARRANTY AND PROCESS REQUIREMENTS TO OBTAIN AN APPLICATION WARRANTY. CONTACT 3M FOR MORE INFORMATION ON APPLICATION WARRANTY TERMS AND CONDITIONS. Limitation of Remedies and Liability If the 3M™ VHB™ Tape is proved to be defective within the warranty period stated above. THE EXCLUSIVE REMEDY, AT 3M’S OPTION, SHALL BE TO REFUND THE PURCHASE PRICE OF OR TO REPAIR OR REPLACE THE DEFECTIVE 3M™ VHB™ TAPE. 3M shall not otherwise be liable for loss or damages, whether direct, indirect, special, incidental, or consequential, regardless of the legal theory asserted, including negligence, warranty, or strict liability. ISO 9001 This Industrial Adhesives and Tapes Division product was manufactured under a 3M quality system registered to ISO 9001 standards. Industrial Adhesives and Tapes Division 3M Center, Building 225-3S-06 St. Paul, MN 55144-1000 800-362-3550 • 877-369-2923 (Fax) www.3M.com/vhb Recycled Paper 40% pre-consumer 10% post-consumer Recycle, Neg -9- 3M and VHB are trademarks of 3M Company. Printed in U.S.A. ©3M 2014   (10/14)