Budnick Converting ®
Permacel/Nitto Denko America
P257
***Discontinued*** DC Electrical Insulating
P257 is a 3.5 mil, double-coated, polyester film electrical insulating tape. It is expressly engineered for bonding and laminating functions that require positive dielectric barrier. P257 is recommended for use as layer insulation in fine wire precision wound coils to anchor turns; for process line splicing of foils and other thin materials in continuous web form that require medium heat & solvent resistant splices; & to position terminal boards & saddles in coil manufacture. It is also ideal for laminating. Discontinued
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 | PET - Polyester |
|---|---|
| Adhesive | Rubber |
| Thickness | 3.5 Mils |
| Tensile | 25.00 lbs/in |
|---|---|
| Elongation | 100.00% |
| Adhesion (liner) | 50 oz/in |
| Adhesion (unwind) | 50 oz/in |
| Min. Application Temp | 40° F |
|---|---|
| Min. Service Temp | 0° F |
| Max Short-Term Temp | |
| Max Long-Term Temp |
Product Features
- Liner readily releases to expose second-side adhesive
- Heat & solvent resistant
- Corrorsion-free use in fine magnet wire & bare copper foil applications
- Excellent dielectric strength permits use as high voltage dielectric barrier
Adhesive Tape Applications
- Securely anchors turns to prevent slippage so it can be used as a ground, barrier or layer insulation in small precision wound & stick wound coils
- Holds the start & finish on form wound coils for large rotting machinery use
- Medium & solvent resistant splices in metal foils & insulating materials for continuous process lines
Adhesive Tape Colors
- Yellow
Comparable Products
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.