For footwear applications, TPU waterproof film procurement requires four verifiable metrics: hydrolysis resistance ≥60 N/3CM after 24h immersion, elongation at break ≥300% (ASTM D412), water vapor transmission rate ≥650 g/m²/day (ASTM D6701), and hydrostatic pressure resistance >10,000 mmH₂O rau 0.012–0.025 mm zaj duab xis. Phau ntawv qhia no muab cov cuab yeej ntsuas lub cev, kev sib piv txoj kev ua haujlwm (siab- zaus welding vs. adhesive bonding), delamination hauv paus ua rau tsom xam, thiab lub Hoobkas kuaj cov txheej txheem rau ntau qhov tsim nyog.
Lub cev muaj zog ntawm TPU zaj duab xis: Hydrolysis Resistance thiab Elongation
TPU (thermoplastic polyurethane) zaj duab xis outperforms PVC thiab EVA nyob rau hauv daim ntaub ntawv khau hla peb qhov ntev: hydrolysis tsis kam, elongation, thiab qis -kub yooj.
Hydrolysis Resistance (Critical rau ntub ib puag ncig)
Polyester-based TPU undergoes ester bond cleavage in high-humidity conditions, reducing tensile strength by 40–50% within 12 months at 80% RH. Polyether-based TPU retains >85% tensile zog nyob rau hauv tib yam. Rau cov khau xa tawm mus rau qhov chaw sov lossis siab - cov chaw lag luam av noo, qhia polyether TPU.
| TPU hom | Hydrolysis tsis kam (24h, 70 degree) | Tensile Retention (7 hnub, 70℃/ 95% RH) | Kev thov kom haum |
|---|---|---|---|
| Polyester TPU | Nruab Nrab (Ntau dua lossis sib npaug rau 40 N / 3CM) | 50–60% | Kev nyab xeeb qhuav, khau sab hauv tsev |
| Polyether TPU | Siab (Ntau dua lossis sib npaug rau 60 N / 3CM) | 85–95% | Sab nraum zoov, tsis muaj dej, kev lag luam kub |
| Polycaprolactone TPU | Siab heev (Ntau dua lossis sib npaug rau 70 N / 3CM) | 90–95% | Premium, ntev -cov khoom lag luam |
Cov khoom specification:Yuav tsum tau hydrolysis tsis kam kuaj daim ntawv qhia (24h immersion, 70 degree) qhia ntau tshaj los yog sib npaug rau 60 N / 3CM tev lub zog tuav. Polyether TPU formulations ua tiav qhov no tsis tu ncua.
Tensile Strength & Elongation ntawm Break
| Parameter | Txoj Kev Xeem | TPU zaj duab xis (Tswj) | PVC zaj duab xis (Comparative) | EVA zaj duab xis (Comparative) |
|---|---|---|---|---|
| Tensile zog (MPa) | ASTM D412 | 30–60 | 15–25 | 8–12 |
| Elongation ntawm tawg (%) | ASTM D412 | 300–600 | 150–250 | 100–200 |
| Lub zog tawg (kN / m) | ASTM D624, ASTM D624 | 155 | 60–80 | 30–50 |
| Ntug hardness | ASTM D 2240 Cov Lus Qhia | 60A – 80D | 75–85A | 65–80A |
Engineering khoom:TPU's elongation ntau (300-600%) tso cai rau nws los tiv thaiv qhov rov ua dua ntawm cov khau vamps thiab cov ntiv taw caij nplooj ntoos hlav yam tsis muaj tawg. PVC, nrog elongation hauv qab 250%, ua tsis tau raws li tib yam kev mob
Tsawg-Tsub Flexibility & Cold Crack
| Parameter | Kev kuaj mob | TPU zaj duab xis | PVC zaj duab xis |
|---|---|---|---|
| Qhov kub thiab txias tawg | 180℃khoov | -20℃rau -35℃(tsis muaj kab nrib pleb) | -10℃rau -15℃(kav tawg tshwm) |
| Tsawg-temp flex kuj | -20 degree, 30,000 flexes | Tsis tawg | Cracking ntawm<15,000 cycles |
Supply chain impact:Rau lub caij ntuj no khau looj plab hlaub lossis khau khiab muag hauv North American / European kev lag luam, TPU's -20℃txias tawg tiv thaiv tsis yog- sib tham. PVC-raws li cov khaubncaws sab nraud povtseg poob ntawm -15 degree, tsim kev lav ris rov qab.
Cov txheej txheem ua: Siab-Vuam zaus vs. Adhesive Bonding
TPU zaj duab xis tuaj yeem muab tso rau hauv cov khau khau thiab khau khiab tsis muaj dej ntawm ob txoj hauv kev. Txhua tus muaj tus nqi sib txawv, kev ua haujlwm, thiab kev cuam tshuam zoo.
Siab -Vuam zaus (HF Vuam / Dielectric Vuam)
HF welding siv xov tooj cua zaus zog los tsim kom muaj cua sov hauv TPU zaj duab xis nws tus kheej, melting thiab fusing lub polymer chains ntawm lub interface.
| Parameter | HF Vuam Specification |
|---|---|
| Ntau zaus | 27.12 MHz (ISM band) |
| Weld kub | 130-180℃(TPU melting point) |
| Weld lub sijhawm | 2-8 vib nas this (nyob ntawm thickness) |
| Bond zog | Ntau tshaj los yog sib npaug rau 25 N / 15mm (peel) |
| VOC emissions | Zero (tsis muaj kuab tshuaj) |
| Haum zaj duab xis thickness | 0.05-1.0 hli |
Qhov zoo rau kev tsim khau khau:
Tsis siv cov nplaum nplaum - tshem tawm qhov hnyav tuav thiab ziab qhov cub
Kev sib txuas lub zog ntawm lub zog thoob plaws kev tsim khoom (RF zog nkag mus rau qhov sib npaug)
Ntxuav cov npoo - tsis muaj cov nplaum los yog cov khoom siv ntau dhau
Haum rau waterproof bootie siv thiab seam sealing
Kev txwv:
Yuav tsum tau siv tooj liab electrode tooling (tus nqi pib: $ 2,000-5,000 ib tus qauv)
Not suitable for films >1.5 hli thickness (RF penetration txwv)
Yuav tsum tau TPU formulation nrog tsim nyog dielectric poob yam
Adhesive Bonding (Kub Melt & Solvent-raws li)
Adhesive bonding siv peb- txheej nplaum (TPU kub yaj lossis PU-raws li cov nplaum nplaum) los laminate TPU zaj duab xis rau ntaub los yog tawv substrates.
| Parameter | Kub Melt Adhesive | Solvent-Based Adhesive |
|---|---|---|
| Ua kom kub | 120-160 degree | Chav ntsuas kub (lub sijhawm kho yuav tsum tau) |
| Bond zog | 15-25 N / 15mm | 20-35 N / 15 hli |
| VOC emissions | Tsawg (tsis muaj kuab tshuaj) | Siab (yuav tsum tau cov txheej txheem rov qab) |
| Qhuav / kho lub sijhawm | Instant (txheej txheej daim ntawv cog lus) | 24-72 teev |
| Khoom siv | Tsawg (cov menyuam laminator) | Nruab nrab (lub rooj tshuaj tsuag + ziab qhov) |
Qhov zoo:
Tsawg peev peev tshaj li HF vuam cov cuab yeej
TPU tuaj yeem txuas rau ntau yam ntawm cov substrates (xws li tawv, tsis yog -wovens)
Haum rau loj - cheeb tsam lamination (tag nrho sab sauv vaj huam sib luag)
Kev txwv:
Adhesive ntxiv cov nqi khoom ($ 0.10–0.30 / m²)
Cov kuab tshuaj-raws li cov nplaum yuav tsum tau ntes VOC (REACH ua raws)
Bond zog nyob ntawm daim ntawv nplaum thiab daim ntawv thov sib xws
Txheej Txheem Xaiv Matrix
| Yog tias koj qhov kev tsim khoom xav tau ... | Xaiv HF Vuam | Xaiv Adhesive Bonding |
|---|---|---|
| Seam sealing / bootie siv | ✓ (xav tau) | Ua tau tab sis qeeb dua |
| Loj - cheeb tsam sab sauv lamination | Tsis haum | ✓ |
| Zero VOC / kuab tshuaj- pub dawb | ✓ | Tsuas yog nrog kub yaj |
| Lub sijhawm ceev ceev (<10 sec per joint) | ✓ | Tsis yog (kub yaj yuav tsum tau txias) |
| Cov cuab yeej siv qis rau cov khoom me me | Tsis muaj | ✓ |
| Bonding TPU rau tawv | Tsis yog (tawv tsis welded) | ✓ |
💡 Cov Lus Qhia rau Cov Neeg Siv Khoom Loj- Qhia txog txoj kev koom nrog hauv koj RFQ. HF vuam xav tau TPU nrog cov khoom tshwj xeeb dielectric; txheem extrusion-qib TPU tej zaum yuav tsis weld tas li. Solamni muaj HF-weldable thiab adhesive- qib TPU zaj duab xis nrog cov ntaub ntawv pov thawj weld zog. Saib TPU zaj duab xis technical specifications →
Tsis txhob delamination hauv Waterproof Performance Shoe Production
Delamination - kev sib cais ntawm TPU zaj duab xis los ntawm substrate los yog nruab nrab ntawm cov khaubncaws sab nraud povtseg - yog thawj hom tsis ua hauj lwm nyob rau hauv waterproof khau. Lub hauv paus ua rau poob rau hauv plaub pawg.
Moisture Contamination (Qhov Tseem Ceeb)
TPU yog hygroscopic heev, nquag nqus dej los ntawm huab cua puag ncig. Txawm tias 0.05% noo noo cov ntsiab lus los ntawm qhov hnyav ua rau lub tshuab nqus tsev vaum thaum lub sijhawm ua haujlwm, tiv thaiv cov saw hlau polymer.
| Cov ntsiab lus noo noo | Qhov cuam tshuam rau Bonding | Kev Tiv Thaiv Kev Ntsuas |
|---|---|---|
| <0.02% | Kev sib raug zoo zoo | Qhuav ntawm 80-100℃rau 2-4 teev |
| 0.02–0.05% | Kev tsim ua ib nrab tsis muaj dab tsi - txo qis zog | Qhuav ntawm 100℃rau 4-6 teev |
| >0.05% | Cov voiding hnyav - delamination lav | Tshem tawm cov khoom; re- qhuav tsis pom zoo |
Factory raws tu qauv:Thov tus neeg muag khoom daim ntawv qhia txog kev ntsuas dej noo rau txhua pawg. Hauv -tsev, siv lub ntsuas dej noo (Karl Fischer titration) ntawm cov khoom tuaj. Tshem tawm ntau tshaj 0.05% noo noo.
Tsis txaus Melt Temperature (HF Vuam)
Rau TPU cov khaubncaws sab nraud povtseg ntawm HF vuam, qhov kub ntawm qhov sib txuas yuav tsum ncav cuag lub ntsiab lus ntawm lub polymer (130-180 degree). Yog tias qhov kub thiab txias qis dhau lawm, daim ntawv cog lus yog "mechanical adhesion" es tsis yog "chemical fusion" - delamination tshwm sim nyob rau hauv bending stress.
Kev Tiv Thaiv:
Calibrate HF welder fais fab tso zis txhua lub lim tiam
Saib xyuas qhov kub thiab txias nrog infrared thermography
Khiav txhua hnub tev lub zog kuaj (lub hom phiaj Ntau dua lossis sib npaug rau 25 N / 15mm)
Substrate Contamination (Adhesive Bonding)
Pwm tso cov neeg ua haujlwm, roj, lossis plua plav ntawm lub substrate nto ua raws li "bond breakers," tiv thaiv cov nplaum los ntawm ntub dej. Silicone- cov neeg ua haujlwm tso tawm raws li cov teeb meem tshwj xeeb.
Kev Tiv Thaiv:
Qhia meej substrate tu raws tu qauv (hloov so los yog plasma kho)
Yuav tsum tau kuaj lub zog saum npoo (dyne qib siab dua lossis sib npaug li 38 mN / m rau cov nplaum nplaum)
Khiav adhesion tev kev ntsuam xyuas ntawm thawj 10 units ntawm txhua qhov kev hloov pauv
Impurities hauv Raw Khoom
Yog tias TPU resin muaj impurities, noo noo, los yog incompatible additives, delamination tshwm sim thaum ua thiab nyob rau hauv - kev pab cuam.
Kev Tiv Thaiv:
Tau qhov TPU zaj duab xis los ntawm ISO 9001-certified factories nrog cov khoom tuaj QC
Thov batch-cov ntaub ntawv xeem cov ntaub ntawv (tensile, elongation, melt flow index)
Ua nyob rau hauv -house FTIR lossis DSC tsom xam rau cov khoom tseem ceeb
Daim ntawv tshuaj ntsuam xyuas delamination (QC tuaj):
| Kuaj | Txoj kev | Kev lees txais |
|---|---|---|
| Peel zog (TPU-rau- ntaub) | ISO 2411 (T-tws) | Ntau dua lossis sib npaug li 20 N / 15mm |
| Flex tsis kam (delamination check) | ISO 5402, 50,000 cycles | Tsis muaj kev sib cais |
| Thaum tshav kub kub laus (72h, 70 degree) | Visual + peel test | Tsis muaj blistering; tev ntau dua lossis sib npaug li 90% ntawm qhov pib |
| Hydrolysis tsis kam (24h, 70℃dej) | Visual + peel test | Tsis muaj kev sib cais; tev ntau dua lossis sib npaug li 60 N / 3CM |
Factory Test Standards for Bulk Lots
Qhia cov kev xeem no hauv koj daim ntawv cog lus yuav khoom. Yuav tsum muaj thib peb- tog (SGS, Intertek, TÜV) lossis tus neeg muag khoom daim ntawv pov thawj ISO 17025-kev lees paub hauv chav kuaj.
Kev ntsuas dej tsis zoo
| Kuaj | Txuj | Kev lees txais | Ntau zaus |
|---|---|---|---|
| Hydrostatic siab tsis kam | ISO 811 lossis ASTM D751 | Ntau dua lossis sib npaug rau 10,000 mmH₂O rau 0.025 mm zaj duab xis | Txhua batch |
| Dynamic waterproof (tiav khau) | ISO 20344 Kev Tswj Xyuas Kev Lag Luam | Zero nkag tom qab 60 cycles / min rau 4h | Rau ntau lawm |
| Air leakage (seam kev ncaj ncees) | SATRA TM 230 | Zero to ntawm 10 kPa siab | Rau ntau lawm |
| Dej vapor kis tus nqi | ASTM D 6701 Cov khoom siv raw khoom | Ntau tshaj lossis sib npaug li 650 g / m² / hnub | Txhua batch (los yog ib formulation) |
Mechanical Property Tests (QC tuaj)
| Kuaj | Txuj | Kev lees txais | Ntau zaus |
|---|---|---|---|
| Lub zog tensile | ASTM D412 | Ntau dua lossis sib npaug li 30 MPa | Txhua batch |
| Elongation thaum so | ASTM D412 | Ntau dua lossis sib npaug li 300% | Txhua batch |
| kua muag zog | ASTM D624, ASTM D624 | Ntau tshaj lossis sib npaug li 150 kN / m | Txhua batch los yog ib formulation |
| Ntug hardness | ASTM D 2240 Cov Lus Qhia | 80A-95A (qib khau khau) | Txhua batch |
| Thickness kam rau ua | Micrometer (10 ntsiab lus / yob) | Nominal ± 5% | Txhua yob |
| Dav kam rau ua | Hlau daim kab xev | Nominal ± 0.5 cm | Txhua yob |
Chemical Compliance Tests
| Tshuaj | Txwv | Test Standard | Ntau zaus |
|---|---|---|---|
| Phthalates (DEHP, DBP, BBP, DIBP) | <0.1% each | ISO 14389 Kev Tswj Xyuas Kev Lag Luam | Txhua batch (EU export) |
| Formaldehyde | <75 ppm | TS EN ISO 14184-1 | Txhua batch |
| Cov hlau hnyav (Pb, Cd, Cr VI) | <0.01% | ICP-OES | Txhua batch |
| DMF (Dimethylformamide) | <100 ppm | GC-MS | Txhua batch |
| REACH SVHC | <0.1% each | Ntau yam | Txhua xyoo |
Nco tseg:TPU tsis muaj phthalate plasticizers los ntawm kev tsim, tsis zoo li PVC. Txawm li cas los xij, cov khoom siv ntxiv (xim xim, UV stabilizers, nplaim hluav taws) tuaj yeem qhia cov khoom txwv tsis pub - yuav tsum tau nthuav tawm tag nrho.
Kev lees txais ntau (AQL per ANSI/ASQ Z1.4 Theem II)
| Hom kev puas tsuaj | Kev piav qhia | AQL Limit |
|---|---|---|
| Major | Hole >1 mm, delamination visible, thickness >±10% of nominal, wrong color (ΔE >2.0) | 1.5% |
| Me me | Scratch >20 mm, dust inclusion, edge curl >10 hli, yob core deformation | 4.0% |
| Tseem ceeb | Phthalates >0.1%, hydrostatic<10,000 mmH₂O, peel strength <20 N/15mm | 0% |
Semantic FAQ (Ntawm cov lus nplua nuj rau B2B Searchers)
500 meters ib thickness / xim rau cov qauv qib. Kev cai xim los yog formulations yuav tsum tau 1,000-2,000 meters. Cov qauv Tshuag muaj los ntawm 200 meters rau kev txiav txim..
Thov kev ntsuam xyuas hydrolysis tsis kam (24h immersion ntawm 70 degree) qhia tev lub zog ntau dua lossis sib npaug rau 60 N / 3CM. Polyether-raws li TPU yog yuav tsum tau rau siab - vaum khw; polyester TPU hydrolyzes nyob rau hauv 12 lub hlis.
15-25 hnub tom qab kuaj pom zoo, FOB Ningbo lossis Shenzhen. Qhia cov qauv huab cua (50-100 m) muaj nyob rau hauv 7-10 hnub. Kev cai xim txuam ntxiv 5-7 hnub
Yog lawm. HF vuam fuses TPU txheej ncaj qha siv RF zog - tsis muaj nplaum, xoom VOCs. Yuav tsum tau TPU formulation nrog cov khoom zoo dielectric; qhia "HF- qib weldable" hauv koj RFQ.
Xa cov ntaub ntawv pov thawj ntawm tuam txhab thiab daim ntawv thov npaj (ko taw hom, tuab, kev sib koom ua ke). Solamni muab 10 m qauv yob rau kev kuaj kev puas tsuaj hauv 7 hnub.
Kev Pabcuam Hoobkas- Rub peb TPU zaj duab xis Hoobkas tshawb xyuas (32 yam khoom) lossis thov 10 m qauv yob rau kev kuaj kev puas tsuaj. [ Hu rau Solamni TPU technical team →]
Solamni Cov Khoom Tshiab - TPU zaj duab xis chaw tsim tshuaj paus nrog txhua xyoo muaj peev xwm: 3.5 lab linear meters. Thickness: 0.05-1.0 hli; dav: mus txog 1.4 m. Cov ntawv pov thawj: ISO 9001: 2025, REACH, RoHS, GRS. Warehouses: Fujian (Tuam Tshoj), Ho Chi Minh City (Vietnam). Cov qauv dawb swatchbook xa tuaj hauv 24 teev.