Engvangin nge thenkhat chu i ngaihtuah ngai em PTFE high-temperature fabrics hian mirror ang maia finish a nei a, a dangte erawh chu matte emaw textured emaw a ni em? A chhanna chu calendering a ni – post-sintering process a ni a, heated mirror rollers hian linear pressure sang tak hmangin product surface chu a siam thar leh thin.
Calendering hian microstructure, surface condition, leh service performance te chu a bulpui berah a thlak danglam a ni PTFE high-temperature fabric . Surface roughness chu order of magnitude-in a tihtlem thei a, microscopic pinholes a seal thei a, release property pawh nasa takin a tichangtlung thei bawk – mahse tear strength leh flexibility tihhniamna man a ni.
Aokai PTFE hian application mamawh dan azirin calendering hi a thlangin a hmang thin. He thuziak hian a nghawng pawimawh panga a sawifiah a, chungte chu: lei chunglam (surface morphology), release performance, impermeability, mechanical properties, leh dimensional tolerance te an ni.
Semi-matte, orange-peel emaw woven texture emaw, pinhole te te
Mirror finish, reflectivity sang tak a ni
Lei chunglam a hring (Ra) .
0.5–1.0 μm a ni
<0.05 μm a ni
A rawng inang tlang vek
Thunun
A thuk zawk, a inthlau zawk (a bik takin brown/black tan)
A hnathawh dan: PTFE melting point (360–380°C) hnaih temperature-ah chuan pressure sang takah chuan material chu full plastic flow a paltlang a. Raised warp/weft yarns te chu a flatten a, continuous ultra-smooth layer a siam thin.
Quality control hlawkna: Calendered fabric-ah hian lei chunglam chhiatna, crystal spot leh bawlhhlawh te chu a langsar zawk a, hei hian a lan dan enfiahna khauh zawk a siam thei a ni.
Release leh Anti-Stick Properties – Enhancement mak tak mai
Nghawng
Calender loh a ni
Calender hmanga tih a ni
Force chhuah tir rawh
A sang zawk – fiber chhuak chhuak atanga micro-mechanical interlocking
Lower – smooth surface hian interlocking a ti bo
Stain laka inven theihna
Thunun
A tha hle – leivut leh glue adhesion a do thei
Thianghlim awlsam
Harsa zawk
A awlsam hle – residue a wipe off
Engvangin nge release a tha zawk: Uncalendered fabric hian fiber bundles a rawn chhuak a, chu chuan adhesives, rubber, emaw dough te nen mechanical interlocking a siam a ni. Calendering hian PTFE layer kal zel, ultra-smooth tak a siam a. Materials hian low-surface-energy PTFE chauh a tawk a – theihtawp chhuah lovin a peeling off a, a la awm lo tluk a ni.
Application impact: Composite molding (reject rates a tihhniam), rubber vulcanization (mold tihfai frequency tihhniam), food baking, leh cleanroom conveying atan a pawimawh hle.
Aokai PTFE hian kan PTFE puan te hi calendered leh uncalendered version pahnih a pe a. Zero residue pawimawhna hmuna release liner application atan chuan calendered fabric hi kan rawt tak zet a ni. Tear strength sang ber mamawhna application (eg, conveyor belts with edge damage risk) tan chuan uncalendered hi a tha zawk mai thei.
Impermeability leh Protective Performance – Pinholes te chu seal theih a ni
Thilneih
Calender loh a ni
Calender hmanga tih a ni
Pinholes/pores te a awm
Tunah hian – coating atanga micro-pore channels te
Sealed – film dense tak chu 0.01-0.03 mm a thuk a ni
Moisture/solvent a lut thei
Thei
Block a ni
Dielectric chakna a ni
Thunun
A sang zawk (pores sealed) .
Sealed surface a hlawkna: 1.1.
Fiberglass substrate chhunga corrosion, delamination leh insulation tihchhiat a veng
Corrosion-resistant lining cloth, electrolytic cell diaphragm, chemical-resistant conveyor belt angin hman theih a ni
Breakdown voltage a tisang – electrical insulation liners tan a tha hle
Fimkhur tur pawimawh: Over-calendering hian puan thickness a tihhniam lutuk chuan insulation performance pumpui a tichhe thei. Balance neih a ngai a ni.
Mechanical Properties – Thiltihtheihna pahnih nei
1. Thil ha lo thleng thei
Thilneih
Hmasawnna
Wear resistance & fuzz resistance a awm bawk
A siam hat nasa hle – smooth surface hian friction stress a sem darh a; fiberglass fully encapsulated, bending nawn leh hnuah fuzz exposure a awm lo
Tensile chakna hman tangkai dan
Tlem a tihpun – compaction hian yarn inkar gap a luah khat a, load sharing a siam thei a; stress concentration point te chu tihbo a ni
2. Thil tha lo (negative effects) a awm
Thilneih
Degradation a ni
Softness & flexibility a awm bawk
A tlahniam – rigidity sang zawk; sharp bending a tuar thei lo. Sharp folds hian white mark (cracks) a siam thin .
Mittui chakna
A tlahniam – compaction hian yarn inkar sliding space a paih chhuak. Vawikhat a crack chuan propagation a rang hle
Break laiin elongation a awm
Lower – thinner, denser structure hian ductility a ti tlem a; shock absorption a chak lo hle
Dilna kaihhruaina:
Calendering tih loh tur: Guide rollers te tak te (sharp bending fo thin), heat shrink sleeve, dynamic bending application-a thil siam
Production hian pre-compensate a ngai a: final target thickness neih theih nan extra impregnation pass emaw base fabric thicker emaw hmang rawh
Thickness planning entirnan: Final product-ah hian 0.20 mm calendered fabric a ngai a nih chuan 0.23-0.25 mm uncalendered material hmangin tan la la, 10-15% a tihhniam beisei ang che.
Thupui – Engtikah nge Calender tur, Engtikah nge pumpelh tur
Dilna
Calendering tih hi a tha em?
Engati nge
Composite/rubber atan liners te chu chhuah tir rawh
✅ Ni e
Zero residue, demolding awlsam tak a ni
Corrosion-resistant linings a awm bawk
✅ Ni e
Pinholes a seal a, wicking a veng bawk
Electric hmanga insulation a awm bawk
✅ Ni e
Dielectric chakna sang zawk
Cleanroom/chaw phurh chhuahna belt
✅ Ni e
Thianghlim awlsam, hman tlem
Conveyor belt te chu edge chhiatna hlauhawm tak a ni
⚠️ Uncalendered ngaihtuah rawh
Tear strength sang zawk, chhiatna tuar theihna
Dynamic bending (roller te tak te, fold na tak tak te) .
❌ I pumpelh tur a ni
Flexibility a tlahniam a, a chhe thei bawk
Belt thuk tak tak, hna rit tak tak
⚠️ Light calendering chauh a ni
Balance wear resistance vs tear chakna te a ni
In summary , calendering hi post-processing technique chak tak a ni a, PTFE high-temperature fabric chu a bulpui berah a thlak danglam a ni. A chunglam chu textured (Ra 0.5-1.0 μm) atanga mirror-like (<0.05 μm) ah a chantir a, release leh stain resistance nasa takin a ti tha a, impermeability leh dielectric strength sang zawk atan pinholes a seal a, wear resistance a ti sang bawk. Mahse, heng hlawknate hi trade-off a awm a: tear strength tlahniam (25-30% loss), flexibility hniam zawk, leh sharp bending hnuaia cracking hlauhawmna.
Calendered PTFE fabric hi i application atan a dik em tih thutlukna siam turin tanpuina i mamawh em? Aokai PTFE hian technical data kimchang nen option pahnih hi a pe vek a ni. I hnathawh dan, mechanical mamawh, leh surface finish mamawh te min rawn biak theih reng e.
Kan full product line atana parameter chipchiar, application scenario, leh customized solutions chungchang hriat belh i duh chuan, PTFE high-temperature fabrics, PTFE high-temperature tapes, PTFE mesh belts, seamless fusing machine belts, single-sided PTFE fabrics, high-temperature resistant conveyor belts leh fiberglass fabrics te pawh a tel a , min rawn biak theih reng e via:
Professionalism leh integrity service philosophy kan vawng nung a, one-stop solution leh ngaihtuahna senga service pek kan tum bawk. customer zawng zawng tan
