It is recommended to preheat the metal to a temperature of 280-350° C. Because the preheated metal cools after removing from the oven, it is important to minimize the distance oven - fluid bath. The hot metal is immersed in the powder for 8-10 seconds. Extending the time will not improve the coverage.
For thin layer applications it is suggested to second heat the product after the powder application to temperature of 170-180° C.
The recommended temperatures might need adjustment for specific products, however, the adhesion of the powder is ensured only at temperatures above 150° C. Overheated material can cause color instability.
The steel surface must be cleaned of grease and other impurities with technical petrol. For better adhesion of the material is recommended to slightly roughen the surface.
How to Use
24 - 32 g/10´
90% less than 300 µm
3 m2/kg at 350 µm
MFI 190 ºC, 2,16 kg
Thermofix is typically used in a Fluid Bed Powder Coating process, which involves dipping preheated metal parts into a fine powder suspended in an air chamber. Fluid Bed process is used when uniform and drip-less coating of 300 – 600 microns is required. This method is very efficient and low cost.
Thermofix PS 02 was formulated especially for coating of wire-based products, such as wire baskets and shelves for domestic or industrial use, like for refrigerators and freezers:
- excellent coverage in problem areas like corners, joints, sharp edges
- lower powder and energy consumption. In many cases, customers notice up to 20% less material consumption with Micromill powder than with their original powder.
- attractive looking surface that provides long-term protection
- certification for contact with the food
- surface does not crack peel
Major advantage of the fluid bed method is a waste-free 100% usage of the powder, which is either melted onto the product or remains in a bath. The ability to coat several products at once by immersion in a fluid bath makes this method very efficient. Truly low-tech technology that does not require a lot of interventions or adjustments.
Product specification sheet PS 02
Polyolefin composition blend for fluidized coating wire program.
Thermofix PS 02
Thermoplastic powder Thermofix has been specifically developed to ensure the protection of the steel surface. Properties have been achieved thanks to the special composition based on modified polyolefins. Thermofix has excellent mechanical strength, resistance to chemicals, salt and pollution in the air. Thermofix has excellent adhesion to metal. It provides a high degree of electrical insulation, abrasion resistance and impact resistance. UV stabilization for outdoor use is optional.
Thermofix is typically used in a Fluid Bed Powder Coating process, which involves dipping preheated metal parts into a fine powder suspended in an air chamber. Fluid Bed process is used when uniform and drip-less coating is required. This method is very efficient and low cost.
The whole production process is carried out under strict quality control standard per ISO 9001:2000.
- acids and alkali
- salts /except peroxide/
- solutions 60 ºC
cross-sectioned surface (X)
300 - 1000 µm
loss of film adhesion less than 10 mm from the cut
corrosion under layer of 2-3 mm
no adhesion loss
no signs of corrosion
Neutral Salt Spray test
Recommended film thickness
Cured film properties