Metalix produces two ranges of coil coated non stick bakeware ;
a) Just cook (Single coating)
b) (Two coatings)
Metalix procures its non stick coil coated steel from Corus steel in the United Kingdom. There are very few coil coated plants remaining in the world and other than the two manufacturing plants in the UK, there remain only a few facilities in the USA. China does not possess any coil coating non stick bakeware manufacturers all their manufacturers use the spray method.
Coil coated non stick bakeware is more effective (release properties) and lasts longer than the Silicone Spray bakeware. It is more environment friendly whilst spray bakeware is far more detrimental to the environment. Metalix does not supply spray coated bakeware in any of it current range of product.
Coil coating is a highly automated, efficient, continuous method of applying nonstick coatings to metal, and is used to coat almost all fluropolymer nonstick bakeware as well as significant quantities of cookware, small appliance and industrial parts.
The coil coating process was developed in the early 1960’s. Nonstick coatings were first applied using this process in the early 1970’s, when non stick bakeware began to be recognized as a superior replacement for tinplate bakeware.
Since the early days Whitford has dedicated considerable research and development effort to develop an entire series of products which are suitable for application by coil coating. These products range from the very beat (QUANTUM ™; an internally reinforced coating) to more economical coatings (XYLAN: easy clean) and a wide choice in between
Coil Coating vs Silicone Spray Systems
Silicone Spray Systems
History: Silicone spray bakeware products are making a reappearance in the UK and mainland Europe because of the lower cost of production.
Some years ago spray was virtually wiped out due to the superior quality of pre-coated products.
Origin: Products are arriving from production facilities that are normally based in China.
Range: Differentiation potential is significantly reduced, with finishes only available in either metallic black or pewter.
Normally products are restricted to one colour for both the interior and exterior.
|A. Coil applied PES/PTFE Substrate is ECCS, a packaging Grade metal with all food Contact approvals.||A. Silicone spray products are normally applied to simple cold rolled mild steel lower quality.|
|B. Coil applied PES/PTFE coatings are applied directly to the substrate without the need for cleaning or pre-treatment.||B. To Obtain adhesion of the coating to the substrate, it is necessary to clean, and either apply a pre-treatment system or Mechanically abrade the Substrate surface.|
|C. ECCS has some corrosion resistance when exposed to moist air.||C. When exposed to air cold rolled mild steel will corrode in moist conditions.|
Application of coil coatings is extremely efficient, with usage normally in excess of 95%.
Spray application can lead to large amounts of over spray leading to much higher usage levels.
Coil applied products are extremely uniform in terms of film thickness
Spray requires automatic application to give consistent coating thickness.
Coil applied coatings in the UK are subject to strict waste management practices (EN14001 & IPPC)
Spray releases VOC’s into atmosphere.
Bakeware Product Performance
A comparison of silicone spray products verses coil applied PES/PTFE products in Corus laboratories has found:
- Stain resistance of coil applied is superior.
- Temperature resistance of coil applied is superior.
- Fat and oil resistance of the coil applied product is superior.
- Durability of release performance for coil applied is superior.
- Abrasion resistance of the coil applied is normally superior.
- Inclusion and debris counts much lower in coil applied products.
Together with the concern the rtetailer has for the environment, Metalix ,by using only coil coated product is making its mark on by contribution to reducing volatile organic compounds (VOC’s) to zero in the production of its bakeware. VOC’s are carefully controlled during the coil coating application process and oxidize before releasing to the atmosphere through efficient extraction in a controlled environment. The coil coated steel product purchased from Corus Steel in the UK and used in the manufacture of Metalix bakeware is all manufacture in the UK, to UK and European environmental legislation.
Spray coatings tend to be not as efficient in their application with a considerable amount of overspray and wasted coatings which results in harmful VOC’s escaping into the atmosphere. It is recorder that as much as ……………………………………………….
The environmental table below demonstrated the environmental impact of coil vs spray bakeware.
|Coil Coating||Spray Coating|
⁺ Coil Coating process >95% efficient
⁺ Solvents incinerated as part of process and energy used to re-heat curing ovens
⁺ Emissions of VOC’s regulated by law (<50mg/m3) ⁺ Uniformity of coating thickness & application ⁺ Unused paint easily controlled & re-used ⁺ Flexibility in top and reverse coat colour ⁺ ECCS substrate used has full FDA approval for use with food and has good corrosion resistance
― Typical 70% efficiency
― Typical fume extraction can mean release of VOC’s into atmosphere
―Without incinerator up to 300mg/m3
―Variable paint thickness and finish
―Typical 30% waste in overspray
―Typically pewter and black only
―Typically manufactured or CR and other low cost substrates with poorer corrosion resistance