Ti tapes ta PTFE ta mahiselo yale henhla leti hlayisiweke eka xivumbeko xa roll tinga xaniseka hiku namarhela ka interlayer (blocking) xikan’we naku hundziseriwa ka adhesive kuya eka tlhelo leri nga namarheliki. Swivangelo swa timitsu: PTFE film elastic memory na silicone PSA swi creep ehansi ka ntshikelelo na ku hisa. Ntlhantlho: gradient winding tension – yi tiya eka ti layers tale handle, yi ntshunxekile eka ti layers tale ndzeni – hiku tirhisa closed-loop tension control. Ku tatisela hi release coating, vuhlayiselo lebyi faneleke (15-40°C, 30-70% RH), ku vekiwa hi horizontal, na ku rhendzeleka ka roll hi kotara.

Thepi ya mahiselo yale henhla ya PTFE leyi tirhisiwaka eka ku khumbana ka swakudya yifanele ku xixima swipimelo swo tika swa mahiselo: ≤260°C eka kutirhisiwa loku yaka emahlweni (ku hava nkarhi lowu vekiweke), 260-300°C kuringana kufika eka 30 wa timinete ntsena, naswona >300°C ya yirisiwile. Thepi leyi i ya ku khumbana loku nga kongomangiki ntsena (ti-tray liners, swifunengeto swa heat sealer), hayi ku phutsela swakudya hi ku kongoma. Unga tshuki u tirha handle ka ndzhwalo wa swakudya (dry heating). Cinca loko yi ri na swirhumbana, yi tshwuka kumbe yi ambale.

Ti silicone pressure-sensitive adhesives (PSA) ta ti PTFE ta tithepi ta mahiselo yale henhla ti hambana swinene eka matirhelo ya ku dyuhala ka mahiselo yale henhla. Methylphenyl silicone PSA yi hlayisa >85% wa matimba ya peel endzhaku ka 250°C/7 wa masiku, kasi muxaka wa standard methyl wu hunguteka kuya eka 50-70%. Tisisiteme leti horisiweke hi addition-cured (hydrosilylation) tinyika kutshamiseka ko antswa swinene kutlula leti tshunguriweke hi peroxide. Eka vukorhokeri lebyi yaka emahlweni bya 200°C+, hlawula ti grade ta high-phenyl leti horisiweke hi ku engeteriwa.

Tithepi ta PTFE pressure-sensitive adhesive (PSA) leti fambisaka ku hisa tifanele ku fambisa kuhisa loko titshama tirikarhi ti namarhela. Ku engetela ti fillers swiantswisa thermal conductivity kambe swivavisa ku namarhela. Optimal balance yitirhisa spherical coarse particles (tani hi conductive skeleton) leyi hlanganisiweke na ti fine particles (ku tata ti voids), ku hlayisa total filler loading ehenhla nyana ka percolation threshold. Papalata swiphepherhele ni tifibre; va dlaya tack.

Thepi ya mahiselo yale henhla ya PTFE yi tirhela indasitiri ya PV eka swiphemu swimbirhi swohambana: process consumable (yi sivela ku namarhela ka EVA overflow eka ti laminators, solder mask) na insulation ya vutomi byo leha (busbar wrap, junction box fixation). Ku tirhisiwa endzeni ka nkarhi hinkwawo, tithepi tifanele ku hundza eka IEC 61215: 1000-2000h damp heat, UV, thermal cycling (-40°C kuya eka +85°C), na silicone PSA na shrinkage <1%.

Thepi ya mahiselo yale henhla ya PTFE leyi cheriweke eka mabanga yo hisa na swiphemu swo pfalela yi tisa mimpimo ya mune ya nkoka: yi sivela ku namarhela ka plastiki leyi n’okiweke (yi herisa nkarhi wo yima), yi sirhelela ti dies to pfalela to durha, yi homogenizes ku hisa/ntshikelelo eka swipfalo leswi nga cincekiki, naswona yi hunguta ku hlangana ka filimi. Thepi leyi seketeriweke hi fiberglass (0.13-0.25 mm) leyingana silicone PSA (≥260°C) ya hlohleteriwa. Thepi ya ntima ya anti-static ya milayeni ya rivilo lerikulu.

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.

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.

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.