3M
1279
***Discontinued*** Printed Circuit Board Masking
Discontinued 3M 1279 is a 3.8 mil polyester film backing with a specially blended silicone adhesive primarily used for masking printed wiring boards during the gold tip plating process. 1279 tape has a low stretch polyester film for machines, as well as hand applications. Tape must be firmly pressed down by equipment with rubber-covered rollers. Hand rolling usually does not provide enough pressure. A vivid outline of the circuit leads usually indicates adequate pressure has been used. Solvent clean up of the board is recommended to facilitate subsequent soldering. Be sure to follow the manufacturer's precautions and directions for use when using solvents.
| Backing/Carrier | PET - Polyester |
|---|---|
| Adhesive | Silicone |
| Thickness | 3.8 Mils |
| Tensile | 28.00 lbs/in |
|---|---|
| Elongation | 122.00% |
| Adhesive Activation | Pressure |
| Adhesion (unwind) | 31 oz/in |
| Min. Application Temp | 40° F |
|---|---|
| Min. Service Temp | 0° F |
| Max Short-Term Temp | |
| Max Long-Term Temp |
Product Features
- 0.8 mil. polyester backing
- 3.0 mil. silicone rubber adhesive
- Backing reduces stretch and recovery of tape and associated uneven stop-off line
- Adhesive blocks out solutions between fingers
- Adhesive generally performs better with no heat
- Saves money by reducing number of reject boards
- Saves energy and labor costs
- Saves money by reducing clean-up time
- Specially designed adhesive reduces adhesive transfer
- Reduces undercutting
Adhesive Tape Applications
- Masking printed wiring boards during solder stripping and precious metal plating fingers
Adhesive Tape Colors
- Orange
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.
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.