3M VHB Tape 4618
Chemical Resistance Kerosene resistance, Chemical Resistance: Excellent solvent resistance, Chemical Resistance: Fluid Resistance: Salt water resistance, Chemical Resistance: Resistance to plasticizer migration, Hydraulic fluid resistance , Isopropyl alcohol resistance, 10W30 motor oil resistance, Glycol antifreeze resistance, Gasoline resistance, Jet fuel resistance, MEK resistance Application Type Bond Material Form Tape: Foam tape Substrate Conformable foam Industry General purpose, Use in many interior bonding applications Manufacturer 3M Chemistry Acrylic Cure Method Pressure Sensitive Application Temperature (°F) >50 Color White Total Thickness (mm) 0.635 Double Sided Double sided Adhesive Thickness (Liner Side) - Double Sided Tapes (mm) 0.546 Polyethylene Liner Type: PE Film Stress Relief Stress relaxing Durability Outstanding Conformable Conform Density (g/cm³) 0.720 Key Specifications UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL746C recognition Tape Backing/Carrier Acrylic foam backing
Technical Data for 3M VHB Tape 4618
- Chemical Resistance : Fluid Resistance : Water Resistance - Salt water resistance
- Chemical Resistance - Kerosene resistance, Hydraulic fluid resistance , Isopropyl alcohol resistance, 10W30 motor oil resistance, Glycol antifreeze resistance, Gasoline resistance, Jet fuel resistance, MEK resistance
- Chemical Resistance : Relative Solvent Resistance - Excellent solvent resistance
- Chemical Resistance : Plasticizer Resistance - Resistance to plasticizer migration
- Adhesive - Bond
- Tape : Foam Tape
- Foam - Conformable foam
- Interior - Use in many interior bonding applications
- General Purpose
- Other - Use in many exterior bonding applications, Multi purpose
- Roll - Roller
- Other - Platen pressure
- Pressure Sensitive (min) - Pressure Sensitive
- UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association) : 746C - UL746C recognition
- Acrylic Foam - Acrylic foam backing
Application Temperature (°F) >50
Peel Strength (piw) High Shear Strength (psi) High Tensile Strength (psi) High
Total Thickness (mm) 0.635 Double Sided Double sided Adhesive Thickness (Liner Side) - Double Sided Tapes (mm) 0.546
Moisture/Humidity Resistance Excellent moisture resistance
Stress Relief Stress relaxing Durability Outstanding Conformable Conform Elasticity Viscoelastic
Density (g/cm³) 0.720 Test Method
Shelf Life Details All 3M™ VHB™ Tapes have a shelf life of 24 months from date of manufacture 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 Shelf Life Temperature (°F) 40 to 100 Shelf Life Type From date of manufacture Shelf Life (mon) 24
Best Practices for 3M VHB Tape 4618
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.
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.
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.
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.
Time: After application, the bond strength will increase as the adhesive flows on to 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 24hours 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 1hour).This can provide better adhesive wet out on to 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.
Comparable Materials for 3M VHB Tape 4618
Spec Engine® Results