PTFE lapi ra mahiselo yale henhla (PTFE-coated fiberglass) i xitirhisiwa xo sefa xa xiyimo xale henhla eka swiyimo swo tika: ku susiwa ka ntshuri wa gasi ya flue (semende, ku hisiwa ka thyaka, ti boilers ta malahla kuya fika eka 260°C), ku sefiwa ka mati lawa ya onhaka (acids, alkalis, oils), ku sefa ka swakudya/murhi leswinga sterile, na swisefo swa HEPA cleanroom. Xiphemu lexi nga namarheliki xi sivela ku caking ka ntshuri naswona swipfumelela ku basisiwa hiku olova. Ti membrane-laminated grades ti fikelela ku humesiwa ka swilo swale hansi swinene.

Lapi ra mahiselo yale henhla ra PTFE ri hlayisa ku pfaleriwa ka gezi lokunene kusuka eka -180°C kuya eka 260°C: volume resistivity >1013 Ω·cm eka 200°C, dielectric constant yitshamisekile eka 2.0-2.1. Ehenhla ka 260°C, PTFE ya olova, ya bola ehenhla ka 327°C, yi lahlekeriwa hi insulation hilaha kunga heriki. Ehansi ka 0°C, insulation ya antswisiwa kambe coating yi hundzuka brittle. Tshama endzeni ka 260°C kuva u kuma matirhelo yo tshembheka.

Nhundzu ya water vapor barrier ya PTFE adhesive tape yikumiwa ngopfu hi swihoxo swa coating (micropores, microcracks, fibre wicking) kutlula PTFE’s intrinsic hydrophobicity. Pure PTFE film yi nyika ntsena WVTR ya le xikarhi. Multi-layer coating na lamellar fillers (mica, glass flakes) swiendla leswaku kuva na labyrinth effect, leswi hungutaka swinene ku hundziseriwa ka vapor. Eka ku pfariwa ka ndzhongho wale henhla, boxa swifunengeto leswi tsindziyeleke.

Lapi ra mahiselo yale henhla ya PTFE (PTFE-coated fiberglass) ri kahle swinene eka mabandhi yo fambisa swakudya hikokwalaho ka ku tiya ka rona ka 260°C eka kuhisa, -70°C ku olova ka xirhami, vuandlalo lebyi nga namarheliki, na ku landzelela FDA. Switirhisiwa swa nkoka: ti oven ta bakery (tibiscuit, xinkwa, pizza), switirhisiwa swo fambisa swakudya leswi oxiweke, tilayini to kufumeta swilondza, tithanele to titimela, swisirhelelo swo hisa, na ku phutsela hi roller. Swi hunguta ku tlanga hi nkarhi na nkarhi w hlawuleka swa tiindasitiri.

Ku tiya ka creep ka PTFE high-temperature adhesive tape ehansi ka ndzhwalo wa nkarhi woleha lowu nga cinciki (ngopfu ngopfu eka 200-260°C) swikumiwa hi swilo swimbirhi: silicone PSA crosslink density (crosslinking yale henhla yi sivela ku khuluka) na muxaka wa substrate (fiberglass-reinforced PTFE yi lwisana na cold creep; pure PTFE film creeps). Xinamarheti lexi nga crosslinked xi tsandzeka hi ku hatlisa loko ku hisa ngopfu. Ti layers to namarhela leti tiyeke ti engetela khombo ra creep.

Eka thepi ya mahiselo yale henhla ya PTFE leyi tirhisiwaka eka switirhisiwa swa abrasive sliding friction, standard non-stick na ku tiya ka kuhisa aswi enelanga. Swipimelo swa nkoka swo hlawula: Ku lahlekeriwa hi taber abrasion (<15 mg/1000 cycles), ku tatiwa loku cinciweke ka PTFE coating (carbon/graphite/MoS2), data ya PV limit, matimba ya substrate (≥200 N/cm), na ku khwaxa ka vuandlalo bya mating (Ra 0.2-0.4 μm). Nsirhelelo lowu faneleke wa makumu xikan’we naku boha hiku hetiseka swina nkoka swinene eka vutomi byo leha.

Switirhisiwa swo hetisa ehenhla leswi cheriweke eka lapi ra fiberglass loko kungase peta PTFE swina nkoka swinene eka matirhelo yohetelela ya lapi ra mahiselo yale henhla ya PTFE. Ti organosilane coupling agents ti endla mabuloho ya molecular exikarhi ka inorganic glass fibre na organic PTFE, leswi tlakusaka matimba ya peel kusuka eka <2 N/cm kuya eka 4-8+ N/cm. Vutshunguri lebyi faneleke byi tlhela byi antswisa ku tiya ka kuhisa (260°C+), matirhelo ya dielectric, na ku tiya ka tikhemikhali. Lapi leri nga tshunguriwangiki ri yisa eka delamination, bubbling, na vutomi byo koma bya ntirho.

Warp na weft density ya lapi ra fiberglass swi boha matirhelo ya lapi ra mahiselo yale henhla ya PTFE. Density yale henhla yi engetela matimba ya tensile xikan’we naku olova ka le henhla kambe yi hunguta matimba ya tear (inverted U-curve), ku olova, na ku nghena ka coating. Density leyinene yi ringanisela ku nghena, ku tsandzeka ku handzuka, ku olova, na ku hetisa ehenhla. Density yale hansi yi fambelana na dynamic bending; density yale henhla ya non-stick na insulation.

PTFE substrate hi ntumbuluko yikota ku fafazela munyu (ku amukeriwa ka mati <0.01%). Hambiswiritano, matirhelo hinkwawo ya thepi yaya hi muxaka wa adhesive: silicone PSA yikota ku tiyisela tindzhawu tale lwandle (500-1000h salt spray tests,>80% peel retention); acrylic PSA yi tsandzeka. Ku tshunguriwa kahle ka le henhla, ku cheriwa handle ka bubble, na ku pfariwa ka makumu hi silicone sealant i swa nkoka swinene eka ku tshembheka ka nkarhi woleha eka tipulatifomo ta le lwandle na swikepe.

Calendering – ku tshikelela lapi leri funengetiweke hi PTFE exikarhi ka ti mirror rollers leti hisiweke eka 360-380°C – swi cinca swinene xivumbeko xa le henhla, swivumbeko swa ku humesiwa, ku nga ngheni, na matirhelo ya michini. Yi hunguta ku khwaxa kusuka eka Ra 0.5-1.0 μm kuya eka <0.05 μm, yi pfala ti pinholes, yi antswisa ku tiya ka ku onhaka, kambe yi hunguta matimba yo handzuka xikan’we naku olova. I swa nkoka eka ti release liners na ku pfaleriwa ka gezi.