Silverstone (plastic)
SilverStone is a non-stick plastic coating made by DuPont. Released in 1976, this three-coat (primer/midcoat/topcoat) fluoropolymer system formulated with PTFE and PFA produces a more durable finish than Teflon coating.
A reinforced version with higher scratch and abrasion resistance is also available. Maximum continuous use temperature is 290°C (550°F).
Specification
As of 1980 Dupont required that the pans carrying the brand be a heavier weight than others on the market. After the coating was applied the cookware was subsequently "baked" in a 700-800 degree oven to affix the coating.[1]
Process
The process for creating Silverstone cookware begins by sandblasting the products which creates an uneven surface that encourages adherence. Then a primer layer of Teflon is sprayed on and after it is baked at high heat to "a secure mechanical grip."[2] Gizmodo reported in 2014 that one or two more additional layers were applied after the initial layer.[2] Silverstone was described as a second generation (e.g. improved) way of creating teflon plans that scratched easily prior to the brand's release.[3]
What is Teflon
Teflon is DuPont's registered trademark for its non-stick coatings. Teflon coatings are specially formulated finishes that are based on PTFE, PFA, FEP, and ETFE fluorocarbon resins. Teflon-S is a related family of fluorocarbon coatings containing binding resins which provide increased hardness, abrasion resistance, and other desirable properties.[4]
Safety questions
The safety of Teflon in pans has been questioned as more than 95% of humans have been found to have Teflon in their systems.[3]
References
- ↑ Blake, Harriet (5 October 1980). "Scouring the Shelves For Nonstick Pans". Washington Post. Retrieved 2 February 2020.
- ↑ 2.0 2.1 Blake, Harriet (10 October 2014). "How They Get Teflon to Stick to Pans". Gizmodo. Retrieved 2 February 2020.
- ↑ 3.0 3.1 Williams, Rose Marie (June 2006). "Teflon Makes Life Easy, But Is It Safe?". Townsendletter. Retrieved 2 February 2020.
- ↑ http://www.plastechcoatings.com/teflon_coating.html
External links
- DuPont history of Silverstone
- Teflon; Low Friction Coatings
- If nothing sticks to Teflon, how does it stick to pans?
- How They Get Teflon to Stick to Pans
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