Budnick Converting ®
3M
438
Heavy Duty Aluminum Foil Tape
438 is a 7.2 mil, heavy duty aluminum foil tape. It is primarily used as a barrier, protector and thermal conductor in appliance (electronics) industry. It is also used to patch tears in skins of aircraft and truck trailers.
Converting Services
- Precision Cutting
- Die Cutting
- Slitting
- Printing
- Laminating and Coating
- Spooling and Finishing
- Consulting & Process Audit
- Prototyping
- Inventory Management
At Budnick, we specialize in custom converting these materials into labor saving, user-friendly parts.
| Backing/Carrier | Aluminum |
|---|---|
| Adhesive | Acrylic |
| Thickness | 7.2 Mils |
| Tensile | 59.00 lbs/in |
|---|---|
| Elongation | 10.00% |
| Adhesive Activation | Pressure |
| Adhesion (unwind) | 43 oz/in |
| Min. Application Temp | 32° F |
|---|---|
| Min. Service Temp | -65° F |
| Max Short-Term Temp | 300° F |
| Max Long-Term Temp |
Product Features
- 5-mil aluminum foil backing is heavy protection, heavier than many foil backings
- Heat reflective
- Non-flammable meets U.L. 723 Class "l"
- Acrylic adhesive is long aging
- Water Vapor = 0.1g H2O/100 sq. in./24 hrs.
- Transmission Rate: (1.55 g/m2/24 hrs.)
- Weight = 0.0217 lbs./yd./in./width (0.0109 kg/m/24 mm)
- Helps protect parts from water, dust and chemical damage
- Helps protect parts from heat
- Will not aid combustion
- Helps reduce replacement cost
Adhesive Tape Applications
- Barrier, protector and thermal conductor in appliance (electronics) industry
- Use when customer specification calls for a 5-mil (0.13 mm) foil as a barrier for vinyl coated wires in many applications in appliance industry
- Patch tears in skins of aircraft and truck trailers
Adhesive Tape Colors
- Silver
Data provided by Budnick Converting, Inc.
The physical properties listed are typical values and are not to be considered as specifications. Our suggestions for use are based on tests we believe to be reliable. However, the purchaser must carry out their own tests to determine the suitability of the product for their internal use. Information is given in good faith, but without warranty.
It is essential, as with all pressure-sensitive tapes, that the surface to which the tape is applied be clean, dry and free of grease and oil.
Shelf life from date of manufacture is based on the product being stored at 70°F(21°C) / 50% relative humidity out of direct sunlight.
Specification compliance is dynamic and should only be used as a general guide. Always confirm that the tape you are interested in currently complies with all specification requirements. Please verify that the product number that you select is available in the proper size and color to meet your specification.