Indwangu ye-PTFE enezinga eliphezulu lokushisa (i-PTFE-coated fiberglass) ilungele amabhande okuthutha ukudla ngenxa yokumelana nokushisa kwayo okungu-260°C, -70°C ukuguquguquka okubandayo, indawo enganamatheli, kanye nokuthobela kwe-FDA. Izicelo ezibalulekile: ohhavini bebhikawozi (amabhisikidi, isinkwa, i-pizza), izinto zokuthutha ukudla okuthosiwe, izintambo zokupholisa uswidi, imihubhe eqandayo, izinto zokuvala ukushisa, nokugoqwa kwamarola. Yehlisa imfucuza kanye nesikhathi sokuhlanza.

I-Calender – ukucindezela indwangu eboshwe nge-PTFE phakathi kwamarola esibuko ashisisayo ku-360-380°C – kushintsha ngokuphawulekayo ukumila kwendawo, ukukhulula izakhiwo, ukungaboli, nokusebenza komshini. Yehlisa ukuhwaqaza ukusuka ku-Ra 0.5-1.0 μm kuya ku-<0.05 μm, ivala amaphinifa, ithuthukise ukumelana nokugqoka, kodwa inciphisa amandla okudabula nokuguquguquka. Ibalulekile ekukhululeni ama-liner kanye nokufakwa kukagesi.

Indwangu yokushisa ephezulu ye-PTFE (i-PTFE membrane material) iyinketho ephambili yezakhiwo eziqinile. Izinzuzo ezibalulekile: iminyaka engu-30+ yempilo yangaphandle, indawo ezizihlanzelayo (amanzi emvula ageza ukungcola), ukudlulisa ukukhanya okuthambile (6-13%), isilinganiso somlilo Sekilasi A, namandla afana nensimbi angaphansi kuka-1.5 kg/m². Isetshenziswa ezinkundleni zemidlalo, ezikhumulweni zezindiza, nezakhiwo eziyisakhiwo sodumo emhlabeni jikelele.