Overview of DeWAL Unsintered Film
What is DeWAL Unsintered Film?
DeWAL Unsintered Film, also known as DW-200UF, is an innovative unsintered polytetrafluoroethylene (PTFE) film developed and manufactured by DeWAL Industries. It offers superior chemical resistance and release properties compared to traditional skived PTFE films.
Key Features and Benefits
- Extremely low coefficient of friction, enabling effortless release
- Excellent non-stick properties
- Outstanding chemical resistance
- Can withstand continuous use temperature up to 500°F
- Easy to die-cut into custom shapes and sizes
- Cost-effective compared to skived PTFE films
Applications of DeWAL Unsintered Film
DeWAL Unsintered Film is ideal for use in:
- Mold release films
- Medical packaging
- Electrical insulation
- Platen liners
- Microwave susceptors
- Automotive applications
- Wire and cable wrapping
Manufacturing Process
DeWAL Unsintered Film is produced through a proprietary process that results in a porous, high-strength PTFE film.
Key steps:
- PTFE resin is blended with a unique process aid
- The blend is calendered into a thin film
- The film is then stretched in machine and transverse directions
- A final annealing step locks the porous structure in place
This innovative process creates a film with significantly higher strength compared to skived or cast PTFE films.
Technical Specifications
| Property | Value | Test Method |
|---|---|---|
| Thickness | 0.001″ – 0.012″ | ASTM D374 |
| Tensile Strength | >3000 psi | ASTM D882 |
| Elongation | >200% | ASTM D882 |
| Dielectric Strength | >2000 V/mil | ASTM D149 |
| Outgassing (TML) | <0.5% | ASTM E595 |
| Melting Point | 623°F | ASTM D3418 |
Frequently Asked Questions
What are the advantages of DeWAL Unsintered Film vs skived PTFE film?
DeWAL Unsintered Film offers higher tensile strength, elongation, and abrasion resistance compared to skived PTFE. It also provides superior mold release properties.
What temperature range can DeWAL Unsintered Film withstand?
It can perform continuously at temperatures up to 500°F. The melting point is 623°F.
Does DeWAL Unsintered Film contain BPA, latex, silicone, or other additives?
No, it is a pure PTFE film without any additives or coatings. This ensures excellent chemical resistance.
Is DeWAL Unsintered Film available with an adhesive backing?
Yes, it can be supplied with a high-temperature silicone adhesive which maintains bond strength up to 500°F.
What industries commonly use DeWAL Unsintered Film?
Key industries include aerospace, automotive, electrical, medical device packaging, and industrial manufacturing.
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