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 sɛnea ɛko tia ɔsɛe no tu mpɔn, nanso ɛtew tetew ahoɔden ne sɛnea ɛyɛ mmerɛw so. Ɛho hia ma release liners ne anyinam ahoɔden insulation.

Fiberglass weave pattern – plain, twill, anaa satin – nya PTFE ntama a ɛyɛ hyew kɛse no su so nkɛntɛnso kɛse. Satin weave ma ahoɔden a ɛkorɔn sen biara a wɔtetew (2-3x plain) ne flexibility, a eye ma dynamic bending. Plain weave ma dimensional stability a eye sen biara ne peel adhesion, a ɛfata ma static applications. Twill kari pɛ wɔ agyapade nyinaa mu ma wɔde di dwuma wɔ ɔkwan a ɛkɔ akyiri so.

Nneɛma anan na ɛkyerɛ PTFE ntama a ɛyɛ hyew a ɛkorɔn a wɔde kata so pɛpɛɛpɛ: nea wɔde kata so (particle size 0.15-0.35 μm, viscosity, solid content), coating & sintering process (blade coating a wɔpɛ ma biakoyɛ), substrate su (weave pattern, pre-treatment), ne production environment (20-25°C, <60% RH). Dip + blade a wɔaka abom nhyehyɛe no kari pɛ wɔ penetration ne surface smoothness.

Sɛ wosiesie na wosiesie no yiye a, ɛma PTFE ntama a ɛyɛ hyew kɛse no nkwa nna yɛ tenten. Hohoro bere a wode adi dwuma awie ne bere a woayɛ nwini awie no. Fa brɔs a ɛyɛ mmerɛw, nnuru a wɔde hohoro nneɛma a ɛnyɛ hwee, anaa nsa di dwuma ma nkekae. Mfa acid/alkali a ano yɛ den, bleach, anaa dade a wɔde twitwiw nneɛma nni dwuma da. Silicone ngo a wɔde sra no daa no ma ɔsɛe so tew. Di akwankyerɛ ahorow yi akyi na amma nneɛma a wɔde kata so no ansɛe.

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 ɔsɛe, ne nnuru a ɛko tia kodu 260°C mu. Silicone ntama ma wotumi yɛ nsakrae a ɛkorɔn, ɛma anyinam ahoɔden siw ano, na ogya ntumi nhyew (ɛkɔ soro kodu 230°C). Gyina nea ɛho hia wo so paw.

PTFE ntama a ɛyɛ hyew kɛse ma nnuru a ɛyɛ soronko a ɛko tia, na egyina acid a ano yɛ den, alkalis, organic solvents, ne mframa a ɛporɔw ano. Saa asɛm yi ka nneɛma a ɛko tia, anohyeto ahorow (alkali dade a ayow, nneɛma a ano yɛ den a ɛma fluorin), ne nneɛma atitiriw te sɛ ɔhyew, sɛnea ɛdɔɔso, ne mfiri mu nhyɛso ho asɛm kɔ akyiri.

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.