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What is PTFE (often incorrectly referred to as Teflon®) glass cloth tape?

PTFE glass cloth tape usually refers to an adhesive backed PTFE coated fabric which has either a Silicone or acrylic adhesive applied to one surface. The substrate, or woven glass cloth, usually used for these styles of tapes is referred to as a singles grade.

What's the difference between a singles substrate and a twisted version?

Singles grades are closed weave substrates (non mesh types) with yarns that are not as tightly wound. More twisted versions are used for PTFE conveyor belts.

Singles substrates are used because they lay flatter that twisted version therefore are more easily covered. Because of this a smoother, high gloss, surfaces can be achieved with less P.T.F.E which also means it is a more cost effective option.

What type of adhesive backings do you offer?

The two main options for adhesive are acrylic and silicone which are applied to the PTFE glass cloth to create the tape. Acrylic has a higher level of tack and adhesion and has an operating temperature range of – 4 / + 177 degrees Celsius. Silicone adhesive has a lower level of tack and needs to be applied with a level of pressure. Silicone has a working temperature range of -73 / +240 degrees Celsius.

How does the adhesive stick to PTFE?

To apply any of the two adhesive systems to a prepared surface, chemical etching of the Teflon needs to take place. Etching one surface of the PTFE can be done by using sodium naphthalenide which is the most common method. Etching removes the fluorine atoms from P.T.F.E (Polytetrafluoroethylene) and creates a carbon based layer that increases the ability to bond and reduces the surface friction.

Is this product available in different colours?

We generally supply this is standard tan colour or occasionally in black, We also stock a silver product along with a blue. Blue is popular within the food processing industry,

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sales@techbelt.com

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