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PTFE Fabric Coating Uniformity: Nneɛma Titiriw 4 a Ɛsɛ sɛ Wodi So

Nhwɛsoɔ: 0 Ɔkyerɛwfoɔ: Site Editor Bere a wɔde tintimii: 2026-05-28 Mfiase: Beaeɛ

PTFE a ɛnyɛ pɛpɛɛpɛ a wɔde kata so no ma nsensanee, pinholes, yellowing, anaasɛ adwumayɛ a ɛnyɛ nea ɛbata so a ɛnyɛ pɛpɛɛpɛ ba. Wɔ dwumadie te sɛ ɔhyeɛ a wɔde hyɛ mu, conveyor belt, ne release liners, coating uniformity ka product quality ne service life tẽẽ.

Dɛn na ɛde nkataso a ɛnyɛ pɛpɛɛpɛ ba? Mmuae no trɛw mmeae anan: coating formulation, coating & sintering nhyehyɛe, substrate su, ne production tebea.

Aokai PTFE ayɛ saa nneɛma yi yiye wɔ mpempem pii a wɔyɛ no mmirikatu mu. Asɛm yi kyerɛkyerɛ ade biara mu ne sɛnea wobedi so ama ayɛ nea ɛkorɔn, a ɛyɛ pɛ Ntama a wɔde PTFE akata so.

Coating Formulation – Ntini a ɛde pɛyɛ ba

Nnuru a Wɔde Yɛ Nnuru Parameter	Ideal Range / Ahwehwɛde a Ɛfata	Nea Enti a Ɛho Hia
PTFE abɔdeɛ nketenkete kɛseɛ	0.15 – 0.35 μm (D50) na ɛwɔ hɔ.	Nkyekyɛmu a ɛtrɛw dodo no sɛe substrate penetration ne film-forming adwumayɛ
Molekyule mu duru & viscosity	Balanced – ɛnyɛ nea ɛkorɔn dodo anaasɛ ɛba fam dodo	Slurry viscosity a ɛnteɛ no mma ɛntrɛw mpo tẽẽ
Nsɛm a ɛyɛ den	60±2% (a ɛyɛ nea wɔtaa de hyɛ nsu mu) .	Nneɛma a ɛyɛ den a ɛdɔɔso dodo ma ɛtwetwe a ɛnyɛ pɛpɛɛpɛ bere a ɛreyow no
Nneɛma a wɔpetepete	Agglomeration biara nni hɔ	Sɛ ɛnpete yiye a, ɛde mpɔtam hɔ nneɛma nketenkete akuwakuw ne nneɛma a wɔde kata so no mu sintɔ ba
Nneɛma a wɔde hyɛ mu (sɛ nhwɛso no, dɔte a wɔde yɛ powder) .	Nea ɛkɔ so daa, a wɔahwete yiye	Ɛsakra microscopic soro tebea; filler a ɛnkɔ so pɛpɛɛpɛ ma ne kɛse mu nsakrae ba

Afotu a mfaso wɔ so: Bere nyinaa sɔ PTFE emulsion batch biara hwɛ sɛ ebia particle size kyekyɛ ne viscosity ansa na wɔayɛ. Nsakraeɛ a ɛyɛ 10% wɔ viscosity mu no tumi sesa coating pickup 5-8%.

Wɔtaa bu abusuabɔ a ɛda PTFE abɔde nketenkete kɛse ne ade a wɔde kata so no ntam no adewa. Emulsions a D50 wɔ ase 0.12 μm sen ntɛmntɛm dodo, na ɛma edge bead formation (a ɛyɛ den a wɔde kata anoano) bere a ɛreyow no. Emulsions a D50 boro 0.4 μm nhyɛn fiberglass mu yiye, na ɛde surface porosity ne fiber encapsulation a ɛyɛ mmerɛw ba. Ɔkwan a eye sen biara (0.18-0.22 μm) ma wotumi hyɛn mu yiye na ɛyɛ sini a ɛyɛ mmerɛw. Ade foforo a ɛho hia ne surfactant a ɛwɔ mu – surfactant dodow ma foaming bere a dip coating, na ɛma mframa bubbles a ɛpae na efi craters. Surfactant kakraa bi dodo ma nneɛma nketenkete no boaboa ano na ‘mpataa aniwa’ ba wɔ ade a etwa to a wɔde kata so no mu. Sɛnea ɛbɛyɛ a ɛbɛyɛ pɛ a ɛkɔ so daa no, wo ne emulsion adwumayɛfo biako yɛ adwuma na bisa batch adansedi nkrataa a ɛkyerɛ D50, D90, ne surfactant ɔha biara mu nkyem.

Aokai PTFE de PTFE emulsion a wɔahyɛ so denneennen a ɛkyekyɛ nneɛma nketenkete (D50 0.18-0.22 μm, D90 <0.35 μm) nkutoo na edi dwuma. Eyi ma wotumi hyɛn mu bere nyinaa na ɛyɛ torotoro awie wɔ ntama biara mu.

Coating & Sintering Process – Ɔfa a Ɛsi gyinaeɛ ma Uniformity

1. Coating Ɔkwan a Wɔde Toto Ho

Ɔkwan	Nnyinasosɛm	Uniformity Level a Ɛyɛ Pɛ	Mfaso ahorow	Cons
Dip a wɔde kata so	Substrate fa emulsion aguaree mu	Kakra	Nsuo a ɛyɛ fɛ nyinaa, fiber encapsulation	Ntrɛwmu tenten, anoano a ɛyɛ den, mfinimfini a ɛyɛ tratraa
Blade a wɔde kata so	Precision oduruyɛfo blade mita ahorow a wɔde kata so	Wɔpɛ – biakoyɛ a ɛkorɔn sen biara	Nneɛma a wɔde kata so a ɛyɛ mmerɛw, ɛyɛ den, pinholes/streaks biara nni mu	Ɛte nka sɛ substrate no yɛ tratraa
Spray a wɔde kata so	Atomized aduru a wɔde petepete so	Hia	Eye ma nsusuwii ahorow a ɛnyɛ pɛpɛɛpɛ	Parameter-sensitive (akwansin, nhyɛso), ɛnyɛ nea ɛfata ma mass production

Adeyɛ a eye sen biara wɔ nnwuma mu: Adeyɛ a wɔaka abom – dip coating + blade coating – wɔagye atom kɛse. Eyi ka bom a ɛkorɔn ne nyinaa wetting of dip coating ne soronko soro flatness of blade coating, kari pɛ fiber encapsulation ahoɔden ne soro pɛpɛɛpɛ.

2. Dry & Sintering Tebea Ahorow

Parameter a wɔde kyerɛ	Nkɛntɛnso a Ɛwɔ Pɛyɛ So
Drying rate	Sɛ ɛnyow pɛpɛɛpɛ (ntɛmntɛm dodo anaasɛ ɛyɛ brɛoo dodo) a, ɛde sini no mu duru a ɛnkɔ so pɛpɛɛpɛ, mpaapaemu, anaasɛ ɛyɛ ketewaa ho agyiraehyɛde ba
Sintering hyew a ɛyɛ hyew	Ɛsɛ sɛ PTFE no nwene ma ɛyɛ sini a ɛkɔ so wɔ 360-420°C . Ɔhyew a ɛnteɛ ma ɛyɛ hyew na ɛnyɛ pɛpɛɛpɛ
Sintering bere tenten	Bere a ɛnnɔɔso → sini a wɔhyehyɛ a enni mũ; bere a ɛboro so → ɛyɛ kɔkɔɔ anaasɛ ɔhyew a ɛsɛe
Ɔhyew a ɛyɛ pɛ wɔ fononoo no nyinaa so	Mpɔtam hɔ mmeae a ɛyɛ hyew/awɔw no ma kɔla no twe ne ho (sɛ nhwɛso no, ɛyɛ kɔkɔɔ wɔ mmeae bi) .

Dip + blade a wɔaka abom no yɛ nnwuma gyinapɛn ma PTFE ntama a ɛyɛ hyew a ɛkorɔn. Nea enti a ɛte saa ni: dip coating nkutoo ma ‘meniscus effect’ – coating no yɛ den wɔ anoano na ɛyɛ tratraa wɔ mfinimfini esiane emulsion no ani nhyɛso bere a ntama no fi aguaree no mu nti. Saa nsakraeɛ a ɛfiri ano-kɔ-mfinimfini yi tumi yɛ 15-20% wɔ ne kɛseɛ nyinaa mu. Blade coating nkutoo, bere a ɛma ɛyɛ tratraa no, di aperepere wɔ penetration ho – PTFE no tra soro a enkata fiberglass nhama no so koraa, na ɛde abrasion resistance a enye ba. Adeyɛ a wɔaka abom: fa wo ho hyɛ mu ma wotumi hyɛn mu, afei ntɛm ara fa oduruyɛfo agyan ase na yi nea ɛboro so no fi hɔ na fa soro no yɛ pɛ. Sɛnea ɛbɛyɛ a nea eye sen biara no, ɛsɛ sɛ wɔde blade gap no si 120-150% wɔ coating thickness a etwa to a wɔpɛ no mu, na ɛkyerɛ sɛnea ɛtwetwe bere a ɛreyow no. Ɔhyew a wɔde kyerɛ wɔ sintering oven no so nso ho hia – 10°C a ɛkɔ soro wɔ ne tɛtrɛtɛ no so no betumi ama nsensanee a wotumi hu aba.

Substrate Quality & Pre-treatment – Nneɛma a Wɔyɛ no Fapem

Sɛnti	Nkɛntɛnso a Ɛwɔ Coating Uniformity so
Nwene nsusuwso	Plain weave: tight texture, dimensional stability pa, permeability a enye. Satin weave: nhyehyɛe a ɛyɛ mmerɛw, ɛhyɛn mu a ɛkorɔn, ɛbata ho kɛse. Twill: ntamgyinafo. Nsonsonoe a ɛwɔ weave density mu no nya emulsion penetration so nkɛntɛnso tẽẽ.
Nneɛma a ɛde efĩ ba asase ani	Paraffin a aka, srade a efi twetwe/weaving mu no siw PTFE trɛw mpo kwan kɛse na ɛde coating sintɔ ba
Nneɛma a ɛwɔ soro a ɛyɛ mmerɛw	Sɛ ɛyɛ mmerɛw a ɛnkɔ so pɛpɛɛpɛ no ma nneɛma a wɔde kata so no boaboa ano wɔ ɔkwan a ɛnteɛ so (ɛyɛ den wɔ mmeae a ɛyɛ den, ɛyɛ teateaa wɔ mmeae a ɛyɛ mmerɛw) .

Nyansahyɛ: Sɛ wopɛ sɛ wode di dwuma a ɛyɛ pɛ kɛse (sɛ nhwɛso no, ɔhyew a wɔde kata so) a, fa satin weave fiberglass ntama a ɔhyew a wɔde tew ho di dwuma na yi organic nkae nyinaa ansa na wode PTFE akata so.

Weave_Pattern_vs_Coating_Nneɛma a Ɛyɛ Pɛ.png

Nneɛma a Atwa Yɛn Ho Ahyia – Guarantee for High Uniformity

Nneɛma a Atwa Yɛn Ho Ahyia	Tebea a Ɛyɛ Paara	Adɛn
Ahoɔhyeɛ	20-25°C na ɛwɔ hɔ	Ɔhyew a ɛnyɛ nea ɛfata ma coating leveling adwumayɛ yɛ mmerɛw
Nsu a ɛyɛ nwini kakra	<60% (ɛyɛ papa: 40-55%) .	Nsu a ɛyɛ nwini kɛse ma nsu no yɛ nwini wɔ emulsion mu, na ɛma pinholes ba
Mframa a ɛho tew	Mfutuma nnim (wɔkamfo kyerɛ sɛ wɔmfa HEPA filtration nyɛ) .	Mfutuma a ɛwɔ mframa mu no hyɛ ade a wɔde kata so no mu, na ɛma nneɛma a ɛwɔ soro no yɛ sintɔ ahorow
Mframa a ɛsen	Wɔahyɛ so, na wɔmfa nsu a wɔde fa nsu mu tẽẽ	Mframa a ɛnkɔ pɛpɛɛpɛ no ma ntama no trɛw a ɛnyɛ pɛpɛɛpɛ ma ɛyow

Hyɛ no nsow a mfaso wɔ so: Wɔ osutɔ bere anaa nna a ɛhɔ yɛ nwini kɛse mu no, susuw ho sɛ wode afiri a wɔde yi nsu fi mu bedi dwuma wɔ dan a wɔde kata so no mu. Nsuo a ɛboro 70% ma pinhole sintɔ kɔ soro kɛseɛ.

Nsɛm a Wɔaboaboa Ano – Ne Nyinaa a Wɔde Bom

Sɛnti	Control Point a Ɛho Hia Sen Biara	Botae/Range a Ɛyɛ Paara
Nnuru a wɔde yɛ nnuru	Nneɛma nketenkete no kɛse kyekyɛ	D50 0.18-0.22 μm, D90 <0.35 μm
Nnuru a wɔde yɛ nnuru	Nsɛm a ɛyɛ den	60±2% na ɛwɔ hɔ.
Kwan	Ɔkwan a wɔfa so kata so	Dip + blade a wɔaka abom
Kwan	Sintering ɔhyew a ɛyɛ pɛ	±5°C wɔ fononoo no trɛw mu
Substrate a wɔde yɛ nneɛma	Nwene nsusuwso	Satin weave ma uniformity-a ɛho hia apps
Substrate a wɔde yɛ nneɛma	Ansa na wɔasa no yare	Wɔde ɔhyew asiesie, nkae biara nni mu
Atenaeɛ	Temperature & nsuo a ɛyɛ nwini	20-25°C, RH <60% na ɛwɔ hɔ.

In summary , coating uniformity of PTFE high-temperature fabric gyina nneɛma anan a ɛka bom so. Coating formulation (particle size, viscosity, solid content) ne nea ɛde ba. Coating ne sintering kwan no – titiriw sɛ wɔde dip + blade a wɔaka abom di dwuma – ne ade titiriw. Substrate su ne pre-treatment na ɛma fapem no. Nneɛma a atwa yɛn ho ahyia no ma wonya awerɛhyem sɛ nneɛma bɛyɛ pɛpɛɛpɛ.

Wɔ applications a ɛyɛ den a ɛhwehwɛ sɛ ɛyɛ pɛ kɛse (sɛ nhwɛso no, ɔhyew sealing tapes, release liners ma sticky products), dip + blade a wɔaka abom kwan no ne nnwuma sika kɔkɔɔ gyinapɛn. Hwɛ parameter biara so daa, ma nneɛma a atwa yɛn ho ahyia tebea nyɛ den, na sɔ emulsions a ɛba no hwɛ sɛ ebia particle size kyekyɛ anaa.

Wohia mmoa a ɛbɛma woanya coating uniformity a ɛkɔ so daa ama wo PTFE ntama no? Aokai PTFE de amanne coating nnwuma ne nhyehyɛe ho afotu ma. Di yɛn ho nkɔmmɔ na fa wo botae ho nkyerɛkyerɛmu ne dodow a wɔyɛ.

Atifi hɔ nsɛm no yɛ nea wɔde ama Jiangsu Aokai Nneɛma Foforo Mfiridwuma Co., Ltd.

Sɛ wopɛ sɛ wuhu pii fa nsɛm a ɛkɔ akyiri, dwumadie tebea, ne ano aduru a wɔayɛ ama yɛn nneɛma nyinaa ho a, a PTFE ntama a ɛyɛ hyew a ɛkorɔn, PTFE teapɔn a ɛyɛ hyew kɛse, PTFE ɔhyew a ɛkorɔn mesh abɔso, seamless fusing mfiri abɔso, PTFE ntama a ɛwɔ afã biako, ɔhyew a ɛkorɔn a ɛko tia conveyor belts ne high-temperature resistant fiberglass fabrics , yɛsrɛ sɛ ntwentwɛn wo nan ase sɛ wobɛka yɛn ho asɛm:

Owura Guo: +86 18944819998 akyerɛw
Owura Liu: +86 13705266308 akyerɛw

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