In the non-stick cookware and bakeware industry, pinholes and premature coating peeling can reduce first-pass production yield and lead to customer returns.

Both problems can be related to insufficient film density and microscopic porosity. Substrate preparation, coating thickness, and curing conditions may also affect the final result.

1. The Processing Limits of Pure PTFE

Pure PTFE provides an extremely low coefficient of friction but has very limited melt flow at high temperatures. During sintering, PTFE melts and coalesces but does not flow like a conventional thermoplastic.

As a result, microscopic voids may remain in the cured film. If these defects extend through the coating system, moisture, oils, and salts may reach the aluminum substrate, increasing the risk of corrosion, blistering, peeling, and declining non-stick performance.

2. PTFE + PFA Dispersion Blending

Adding a melt-processable PFA dispersion can improve the flow behavior of a standard PTFE non-stick coating during curing.

PFA 001  Modified Concentrated Dispersion melts at a lower temperature than standard PTFE. When used at a suitable dosage, it improves film consolidation and helps produce a smoother, denser coating without significantly increasing formulation costs.

PFA 001 is supplied as a waterborne dispersion with a typical solid content of 51% and a pH range of 8–10. It is suitable for use in many waterborne fluoropolymer formulations, although compatibility should be checked in the final coating system.

Mixing: Stir gently and avoid high-speed mixing, excessive shear, and foaming.

Storage: Store between 5°C and 30°C and protect from freezing. Gentle agitation at regular intervals can help reduce settling during extended storage.

Safety: Refer to the latest SDS for complete handling and high-temperature processing information.

Frequently Asked Questions

1. How does PFA 001 reduce pinholes in PTFE coatings?

It improves melt flow during curing and helps the coating form a denser, more uniform film.

2. How much PFA 001 should be used?

The dosage depends on the PTFE formulation, film thickness, and surface requirements. Contact us for a recommended starting dosage.

3. Is PFA 001 suitable for waterborne PTFE coatings?

Yes. It is supplied as a waterborne dispersion, but compatibility should be checked in the final formulation before production.

4. Does PFA 001 change the baking conditions?

PFA 001 melts earlier than standard PTFE, but the final baking temperature and time should still be set according to the complete coating system.

5. Can PFA 001 prevent all coating peeling problems?

No. It can improve film formation and reduce microscopic voids, but substrate preparation, primer adhesion, coating thickness, and curing conditions must also be properly controlled.

Contact our technical team to request the PFA 001 TDS, a recommended starting dosage, or a free sample for laboratory testing.