Teflon is the brand name used for the plastic polytetrafluoroethylene. This plastic is better known by its abbreviation PTFE. PTFE is a plastic that belongs to the thermoplastics. This means that the plastic becomes liquid when heated.
What is Teflon?Teflon is the brand name used for the plastic polytetrafluoroethylene. This plastic is better known by the abbreviation PTFE. PTFE is a plastic that belongs to the thermoplastics. This means that the plastic becomes liquid when heated.
PTFE is pressed into a mold at room temperature as a powder form. The plastic is then sintered in an oven. This involves heating the powder until it just barely turns into a liquid form. Sintering causes the powder grains to adhere to each other, creating a solid material.
The properties of TeflonTeflon is a plastic that possesses characteristics that are very useful in the (food) industry.
- Of all the plastics, Telfon has the lowest coefficient of friction.
- The plastic can withstand very extreme temperatures. From -200 °C to 260 °C. At temperatures above 260 °C the quality deteriorates and at temperatures above 350 °C it decomposes.
- The substance is FDA approved allowing its use in the food industry.
- Odorless, tasteless and toxin-free.
- Repels moisture.
- Chemical resistant.
- Mechanical machining.
- High conduction resistance making it serve as a good insulator.
- Its low coefficient of friction makes it a good lubricant.
What is Teflon used for?Teflon, or PTFE, is used in various types of food preparation equipment, among other things. For example, Teflon is used as a non-stick coating for pans.
This plastic is also used as an insulator. Because this material has good resistance to high temperatures and low friction resistance, it is perfectly suited as an insulator of cabling in aircraft or military installations, for example.
In addition, Teflon is used for sealing threads on gas pipes and as a material for computer mice.
The different types of TeflonThere are several ways to process Teflon. The most common are:
- Teflon coated glass fabric;
- Duplex sealtape;
- Zone tape;
- Teflon without glass fabric.
Teflon coated glass fabricTeflon coated glass fabric is glass fabric fabric coated with Teflon. The fabric serves as a carrier for the Teflon and provides mechanical strength. There are many different types of glass fabric cloth, all with (mechanical) properties and specific characteristics. The standard thickness is 0.08, 0.13, 0.15 or 0.25 mm. The amount/thickness of Teflon is indicated in grams/m2.
Teflon-coated glass fabric comes in an adhesive and non-adhesive version. In the adhesive version, the adhesive layer consists of silicone glue. This can be used up to about 250 °C. Should a stronger adhesive layer be required, acrylic adhesive can be used. This can withstand temperatures up to about 120 °C.
Duplex sealtapeDuplex sealing tape is a heat-seal tape constructed from non-adhesive PTFE-coated glass fabric, which has an adhesive tape on both sides. The adhesive tape is then covered again with a protective film. The adhesive tapes come in the different widths: 15,19 mm and 25 mm.
As a base product, any thickness of Teflon-coated glass fabric can be used. Because there is no adhesive layer in the middle, the heat transfer is maximum. Resulting in a reduction in temperature.c
Zone tapeZone tape is a heat-seal tape constructed of non-adhesive PTFE coated glass fabric, with a double-sided tape on both ends. This is then covered by a protective film. The types of double-sided tape commonly used are silicone and acrylic based.
The double-sided tapes can have widths of: 4, 6, 9, 12, 15 and 19 mm. As a base product, any thickness of Teflon-coated glass fabric can be used. Also with this tape the heat transfer is maximum because there is no adhesive layer in the middle.