PTFE ntama a ɛyɛ hyew kɛse kura anyinam ahoɔden a ɛkyɛn so fi -180°C kosi 260°C: volume resistivity >1013 Ω·cm wɔ 200°C, dielectric daa pintinn wɔ 2.0-2.1. Sɛ ɛboro 260°C a, PTFE yɛ mmerɛw, ɛporɔw boro 327°C, na ɛhwere insulation daa. Wɔ 0°C ase no, insulation no tu mpɔn nanso nea wɔde kata so no bɛyɛ brittle. Tra 260°C mu na ama woatumi ayɛ adwuma a wotumi de ho to so.

PTFE ntama a ɛyɛ hyew kɛse (PTFE-coated fiberglass) ye ma aduan conveyor belts esiane ne 260°C ɔhyew a ɛko tia, -70°C awɔw a ɛyɛ mmerɛw, nea ɛnkyere so, ne FDA mmara so. Nneɛma atitiriw a wɔde di dwuma: fononoo a wɔde yɛ paanoo (bisket, paanoo, pizza), nneɛma a wɔde fa nnuan a wɔayam, nhama a wɔde ma ahwiesa yɛ nwini, akwan a wɔde yɛ nwini, ɔhyew a wɔde siw ano, ne roller wrapping. Ɛtew bere a wɔsɛe no ne bere a wɔde siesie nneɛma so.

Calendering – ntama a wɔde PTFE akata so a wɔde mia ahwehwɛ rollers a ɛyɛ hyew ntam wɔ 360-380°C – sesa ɔfasu no nsɛso kɛse, nea ɛma wogyae, sɛnea ɛmma nsu ntumi nkɔ mu, ne mfiridwuma mu adwumayɛ. Ɛtew roughness so fi Ra 0.5-1.0 μm kosi <0.05 μm, ɛto pinholes, ɛma wear resistance tu mpɔn, nanso ɛtew tete ahoɔden ne flexibility so. Ɛho hia ma release liners ne anyinam ahoɔden insulation.

PTFE ntama a ɛyɛ hyew kɛse ne silicone ntama nyinaa de fiberglass ntama di dwuma sɛ nnyinaso nanso ɛsono wɔ nneɛma a wɔde kata so (PTFE resin vs silicone rɔba). PTFE di mu wɔ nea ɛnyɛ nea ɛbata, nea ɛko tia nea ɛhyɛ, ne nea ɛko tia nnuru a ɛkɔ soro kodu 260°C mu. Silicone ntama ma wotumi yɛ nsakrae a ɛkorɔn, ɛma anyinam ahoɔden siw ano, na ogya ntumi nkɔ mu (ɛkɔ soro kodu 230°C). Gyina nea ɛho hia wo so paw.

PTFE ntama a ɛyɛ hyew kɛse (PTFE membrane material) yɛ ade a ɛkorɔn a wɔpaw ma tensile architecture. Mfasoɔ titire: mfeɛ 30+ abɔnten asetena, ne ho tew asase (osuo nsuo hohoro efĩ), hann a ɛyɛ mmerɛw a ɛkɔ (6-13%), Class A ogya rating, ne dadeɛ-te sɛ ahoɔden a ɛnnu 1.5 kg/m2. Wɔde di dwuma wɔ agumadibea ahorow, wimhyɛn gyinabea ahorow, ne adan a ɛyɛ nwonwa mu wɔ wiase nyinaa.

Ɛnyɛ ntama a wɔde fiberglass ayɛ nkutoo na wɔde PTFE nsu gu mu. Saa asɛm yi de substrates foforɔ 7 ba – aramid, carbon fiber, PBI, porous metal, graphite, asbestos (wɔayi afiri hɔ nkakrankakra), ne ceramic fillers – a wɔn dwumadie no su, mfasoɔ, anohyetoɔ, ne dwumadie titire.

Saa asɛm yi kyerɛkyerɛ nea enti a fiberglass ntama a alkali nnim ne ade a wɔpɛ sɛ wɔde yɛ PTFE ntama a ɛyɛ hyew kɛse no mu. Ɛkata nnuru bonding via silane coupling agents ne honam fam nneɛma atitiriw te sɛ ɔhyew a ɛyɛ den, dimensional stability, ne corrosion resistance – hwɛ hu sɛ ɛyɛ adwuma a ɛtra hɔ kyɛ wɔ mmeae a ɛyɛ den.