PTFE high-temperature cloth siamtu professional Jiangsu Aokai New Materials chuan professional process guidance a share a ni. Sintering laiin PTFE high-temperature cloth (fiberglass fabric coated with PTFE)-a wrinkles lo awm hi a bulpui berah chuan temperature sang tak hnuaia substrate, coating leh equipment-te thermal shrinkage inang lo leh stress inmil lo vang a ni. Wrinkle venna hian sintering furnace chauh a ngaihtuah thei lo va; raw material buatsaih, impregnation, drying, sintering leh cooling hnathawh dan kimchang huam vek tur systematic control a ngai a ni.
Key control link leh practical solution te chu hetiang hian tarlan a ni:
I. Raw Material Substrate Control: Source-a Internal Stress tihbo
Fiberglass substrate quality hian a hnu lama processing harsatna tur a hril a ni. Fiberglass fabric thlan bik, twist hniam leh stable structure nei, skew tlem ber leh uniform edge tightness nei, a lum chuan thermal shrinkage mumal tak a pe thei.
1. Pre-dewaxing leh heat setting kimchang: Substrate chu weaving internal stress tihbo vek nan leh a thermal shrinkage rate stabilize turin high-temperature dewaxing leh thermal setting a neih a ngai a ni. Hetiang stage-a enkawl ṭhat loh chuan puan chu sintering furnace-a a luh veleh control theih loh khawpa shrinkage leh wrinkles nasa tak a thlen ang.
2. Incoming inspection: Fabric flatness chu straightedges emaw fabric inspector emaw hmangin enfiah thin ang che. Batch a sir lo, a sir tight leh bulge nei te chu cut off emaw return emaw rawh.
II. Impregnation & Drying Stage: Thin & Uniform Coating neih theihna tur
Coating thickness inang lo chuan sintering laiin molten PTFE chu a tlem lo hle a, chu chuan wrinkles a siam ngei ang.
1. Single heavy coating ai chuan multiple thin coating passes: PTFE resin chu zawi zawiin a khawlkhawm theih nan pass khatah coating weight tlemte, inang lo tak tak hmanga impregnation leh drying process repeated adopt. Single-layer coating thick tak, chhung lam leh pawn lama drying speed inmil lo siamtu chu pumpelh rawh.
2. Drying oven-a temperature gradient nem tak: Tui leh auxiliaries te zawi zawiin a vawt tir theih nan low-temperature zone atanga tan la, undried inner layers atanga internal stress trap thei tur surface skin formation rang tak a awm loh nan.
3. Drying section-a synchronous active drive rollers: Guide rollers zawng zawng hi motor-driven a ni a, passive dragging atanga longitudinal stretching awm loh nan fabric line speed nena synchronized a ni.
4. Winding indentations awm loh nan drying hnuah sintering furnace-ah direct inline transfer a ni. Intermediate winding a ngai a nih chuan fabric chu fully cool hmasa la, tension hniam leh roll diameter lian tak hmangin wind la, sintering stage-a permanent creases carry loh nan.
III. Sintering Furnace: Temperature, Airflow leh Tension te chiang taka inmil
Hei hi wrinkle suppression atana core control segment a ni.
1. Tension Control: Thermal Shrinkage awmna tur hmun remchang dah la
PTFE chu a melting point (~327°C) aia sang a nih chuan substrate leh coating pahnih hian thermal shrinkage an siam vek a ni. Tension tam lutuk chuan puan chu tharum hmangin a tizau a, a lum hnuah permanent deformation wrinkles chu a lock a; tension tling lo chuan sagging leh loose wrinkles a thlen thin.
· Furnace chhunga closed-loop micro-tension control: Tension sensor hmanga real-time feedback hian section tin motor speed a siamrem a, high-temperature zone pumpuiah fabric flat taka awm theihna tura tension mamawh tlem ber chauh a vawng reng a, fabric chu stacking awm lovin slack-a dah a ni.
2. Temperature Uniformity: Transverse Shrinkage Discrepancy tihbo
Furnace chhunga transverse temperature deviation lian tak hian fabric center leh edges inkarah inconsistent shrinkage a siam a, hei hi longitudinal wavy edges leh central bulges awm chhan ber a ni.
· ±5°C chhunga transverse temperature tolerance tihtlem: Multi-zone independent upper/lower temperature control leh boruak lum circulating hmanga temperature field inang tlang siam.
· Air-flotation sintering furnace dah pawimawh ber: Fabric hi contact rollers tel lovin boruak lum thianghlim chunglam leh hnuai lam cross-blowing hmanga suspended leh conveyed a ni a, hei hian a bul berah chuan mechanical friction leh adhesion avanga wrinkles lo awm thin chu a ti bo a, hei hi premium high-temperature cloth production atana solution tha ber a ni.
3. Airflow Control: Fabric inthlak danglamna ven & Leveling Stabilize
Thlipui circulating speed chu a tam lutuk tur a ni lo va, direct air impact atanga fabric sway nasa tak awm loh nan airflow siamthat tur a ni. Upper leh lower air nozzle inthlak danglam chuan steady uniform airflow a pe a, hei hian fabric surface tibuai lovin heat exchange a tichiang a ni.
4. Taksa lama inzarpharh theihna tur Anti-Wrinkle Roller Components
Furnace leh outlet chhunga key position-ah curved banana spreader rollers emaw crown spreader rollers emaw dah tur a ni. Curved rollers camber hian center atanga edge thlengin lateral stretching force a hmang a, chu chuan fine longitudinal wrinkles te chu a ti bo thei a ni. Carrier rollers zawng zawng chu horizontal leh parallel accuracy atan regular taka calibrate tur a ni a, error 0.1mm/m aia tlem a awm tur a ni.
IV. Cooling & Setting Stage: Flat Surface chu a nghetin lock rawh
Fabric chu sintering furnace atanga a chhuah veleh thermoplastic a ni reng a; cooling dik lo chuan a hmaa processing hmalakna zawng zawng a titawp vek ang.
1. Zawi zawiin slow cooling: High-temperature zone hnuah direct cold air quenching nghal loh tur. Insulated slow cooling section kal tlangin PTFE coating leh substrate temperature chu melting point hnuai lam zawi zawiin tihhniam turin full internal stress release a ni.
2. Cooling laiin spreading leh overfeed vawng reng rawh: Fabric chu cooling laiin a tlahniam chhunzawm zel a, chuvangin fabric temperature 100°C hnuai lam a tlak hma loh chuan overfeed tlem leh spreader rollers a la ngai a ni.
3. Final winding hmain full cooling: Fabric temperature chu room temperature hnaih tir la, residual heat accumulation awm lovin, chutah chuan uniform flat rolls atan consistent low tension hmangin wind rawh.
V. Online Monitoring & A hun taka siamthat
Furnace outlet leh cooling section-a puan chunglam chu êng chak tak hmanga enfiah turin thawktu inpe tak tak ruat rawh. Micro-wrinkles hmuhchhuah a nih veleh tension, temperature emaw line speed emaw fine-tune nghal tur a ni. Out-of-tolerance condition-a automatic alarm hmanga real-time transverse temperature distribution enfiah turin non-contact infrared scanning system dah rawh. Slight permanent wrinkles hi online hmangin hot calender rollers hmangin tihdam theih a ni a, chutih rualin invenna chu a pawimawh ber a la ni reng.
Thupui Thupui Thupui (Core Summary Principle) a ni
Wrinkle defect tam zawk hi tension leh temperature uniformity dik taka control hmangin tihbo theih a ni. Air-flotation furnace pawh hian process parameters substrate characteristics a inmil loh chuan wrinkles a siam thei a, hei hian systematic full-process management hian single equipment optimization a hneh zawk tih a tichiang a ni.
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