PTFE high-temperature fabric baking mats yinyika mune wa swipfuno swa nkoka: matirhelo lawa yanga namarheli (ku hava mafurha kumbe vuswa lebyi lavekaka, ti pastries to olova ti humesa hiku basa), mahiselo yo anama (-70°C kuya eka 260°C, yi hlayisekile eka oven kuya eka freezer), kutirhisiwa nakambe (magidi ya swirhendzevutani, swa olova ku basisa), hambi kuri ku fambisa kuhisa (ku sivela ku hisa, ku ringanisela ka browning). Food-grade FDA compliant, ti hanya kutlula phepha ra parchment naswona ti tlula ti silicone mats letingana ku hundziseriwa ka kuhisa ko antswa xikan’we na xivumbeko xale henhla xa kahle.

PTFE lapi ra mahiselo yale henhla i ya nkoka eka indasitiri ya swiambalo swa interlining. Switirhisiwa swa nkoka: mabandhi yo fambisa lawa yanga heriki ya michini yo hlanganisa leyi yaka emahlweni (yi sivela ku namarhela ka hot melt adhesive, ku fambisa lokunga na swirhumbana), xifunengeto lexi nga namarheliki na lapi ro padding ra ti flat heat press (yi sirhelela ti platens eka ku thyakisa ka namarheta), mabandhi yo fambisa ya ti dot paste/powder coating lines (yi hlayisa ti dot ta namarheta letinga onhakiki hi nkarhi wa ku omisa/sintering), na swifunengeto swa tintangu swa nsimbi swo kandziyela xikombiso. Ku enta swisukela eka 0.13mm (light padding) kuya eka 0.55mm (heavy-duty conveyor belts).

Ku hunguteka ka ku hisa ka lapi ra fiberglass i xivangelo lexikulu xa ku nga tshamiseki ka dimensional ya PTFE tape. Eka mahiselo ya PTFE sintering (360-400°C), ntshikelelo wa ku luka lowu saleke wa humesiwa. Loko yi nga siveriwi, lapi ra hunguteka; loko yi siveriwa, ntshikelelo lowu fihliweke wu pfaleriwile, leswi endlaka leswaku endzhaku ka nkarhi ku hunguteka hi nkarhi wa ku horisiwa hi adhesive (150-200°C) na ku hisa ka matirhiselo yo hetelela. Ntlhantlho: tirhisa pre-heat-set fiberglass leyingana <0.5% shrinkage eka 400°C, ku herisa ntshikelelo lowu saleke loko unga se peta.

Lapi ra mahiselo yale henhla ya PTFE (PTFE-coated fiberglass) rinyika ku tiya ka ti khemikhali loku hlawulekeke, ku tiyisela ti acids leti hlanganisiweke (kukatsa na aqua regia), ti alkalis to tiya (eka mahiselo ya kamara), ti organic solvents, na ti oxidizing agents. Swihlawulekisi: tinsimbi ta alkali leti n’okiweke na ti halogen compounds ta mahiselo yale henhla swi hlasela PTFE. Ku onhaka ka ku peta swi veka fiberglass eka hydrofluoric acid na ti alkali to hisa leti hlanganisiweke. Mahiselo yale henhla ka 260°C ya hunguta ku tiya. Eka tindzhawu totala ta ti khemikhali, lapi ra PTFE ritshama ritshamisekile swinene naswona ritshembekile.

PTFE emulsion impregnation ya fiberglass fabric yilava swipfuneti swohambana hambana kuva ku fikeleriwa ku peta loku fanaka, ku namarhela loku tiyeke, na swiphemu leswinga riki na swihoxo. Swiengeteri swa nkoka swikatsa: switirhisiwa swo tsakamisa (ku hunguta ku tsana ka le henhla, ku antswisa ku nghena), swithickeners (ku lawula viscosity na ntiko wa ku peta), swilawuri swa pH (swi tiyisisa emulsion eka pH 9-10), switirhisiwa swo hlanganisa swa silane (ku ndlandlamuxa ku namarhela eka nghilazi), swipfuneti swo endla filimi (PFA/FEP ku sintering), switirhisiwa swo tata leswi tirhaka (ku lwisana na ku ambala, ku fambisa), ti defoamers (ku sivela ti pinholes), na ti humectants (ku oma hiku nonoka). Ku hlawuriwa swiya hi swilaveko swa substrate na matirhelo.

Lapi ra fiberglass leri andlariweke (bulked yarn fabric) rihambana swinene na lapi ra ntolovelo ra fiberglass eka xivumbeko xa yarn. Hiku tirhisa vutshunguri bya high-pressure air jet, ti filaments ta nghilazi leti yaka emahlweni ta hambanisiwa, ti crimped, naswona ti fluffed kuva voluminous, cotton-like yarn. Leswi swiendla leswaku kuva na lapi ro tiya, ro olova leringana thermal insulation yale henhla (trapped air layers), conformability yo antswa, higher filtration efficiency, xikan’we naku antswisiwa ka tear/flex resistance – hiku durha ka matimba yale hansi nyana ya tensile. Yi tirhisiwa eka ti gasket ta mahiselo yale henhla, swifunengeto swa tiphayiphi, swikhwama swo sefa na swipfalo swa oven.

PTFE high-temperature fabric (PTFE-coated fiberglass) yile kusuhi naku pfumala ti khemikhali, kambe swilo swokarhi swivanga ku bola ehansi ka swiyimo swokarhi. Nhlaselo wo kongoma wa PTFE wuhumelela hi tinsimbi ta alkali leti n’okiweke (sodium, potassium), switirhisiwa swo tiya swa fluorinating (F2, ClF3) eka mahiselo yale henhla, na ti alkali to tiya leti n’okiweke ehenhla ka 300°C. Ku bola lokunga kongomangiki ku humelela loko hydrofluoric acid (HF), hot concentrated alkalis, kumbe phosphoric acid yo hisa yi nghena eka swihoxo swa coating naswona yi hlasela substrate ya fiberglass. Eka vukorhokeri bya tikhemikhali byo tlula mpimo, tirhisa filimi ya PTFE yo basa leyi nga riki na fiberglass.

Lapi ra mahiselo yale henhla ya PTFE (PTFE-coated fiberglass) rina ku tiya ka kahle swinene ka thermal shock endzeni ka ndzhawu ya rona ya ntolovelo yo tirha ya -70°C kuya eka 260°C. Yikota ku tiyisela ku rhendzeleka ka mahiselo hiku hatlisa, xikombiso, ku suka eka -50°C freezer kuya eka 260°C hot press. Ti grade ta premium ti pona hambi kuri ku kufumela ka xitshuketa kusuka eka 260°C kuya eka mati ya 10°C. Hambiswiritano, ku chavisa swilo leswi kusuka eka mahiselo yale henhla ka 300°C (ekusuhi na PTFE’s 327°C melting point) swita endla leswaku kuva na ku pandzeka ka xihatla xikan’we na delamination. Substrate ya fiberglass yinyika ku tiya ka dimensional; xifunengeto xa PTFE hi xona xi sivelaka.

Lapi ra mahiselo yale henhla ra PTFE ritirhisiwa ngopfu eka indasitiri ya tikhemikhali eka switirhisiwa swa nkoka swa nkombo: ti flange gaskets nati pipe linings (yi lwisana na ti acids/alkalis to tiya), ti reactor na ti tank linings (yi sivela ku bola ka nsimbi, ku basisiwa hiku olova), ti filter bags ta corrosive flue gas (kufika eka 260°C), ti anti-corrosion expansion joints ta ti ducts, anti-adhesion ti pads to welda, lapi ro humesa ra composite molding, na swifunengeto swo pfalela gezi/ku hisa. Tigredi ta FDA na UL ta kumeka.

PTFE lapi ra mahiselo yale henhla (PTFE-coated fiberglass) rinyika swipfuno swa mune swa nkoka tani hi anti-corrosion lining: ku nga tirhi ka tikhemikhali (ku lwisana na aqua regia, ti alkalis to tiya, swintshuxekisi), mahiselo yo anama (-70°C kuya eka 260°C kuya emahlweni, 350°C peak), kutshamiseka ka dimensional (<0.5% elongation), na vuandlalo lebyi nga namarheli (ku olova ku basisa, swi sivela ku hlengeletana). Yi tirhisiwa eka tiphayiphi ta tikhemikhali, swihondzo swo susa sulphur, mathangi yo pickling, na switirhisiwa swa swakudya/pharma. Tigredi ta FDA ta kumeka.