Kev ua tau zoo thiab zoo ntawm PVC shrink zaj duab xis ncaj qha txiav txim siab txog kev tsim khoom lag luam, cov nqi, thiab kev sib tw ua lag luam. Kev ua haujlwm tsis zoo ua rau lub peev xwm khib nyiab thiab xa khoom qeeb, thaum qhov tsis zoo (xws li qhov tsis sib xws thiab qhov pom tsis zoo) ua rau cov neeg siv khoom tsis txaus siab thiab rov qab los. Txhawm rau kom ua tiav ob txoj kev txhim kho ntawm "kev ua haujlwm siab + kev ua haujlwm siab," kev siv zog ua haujlwm yuav tsum muaj nyob rau plaub qhov tseem ceeb: kev tswj cov khoom siv raw, kev ua kom zoo dua qub, kev ua kom zoo dua qub, kev tshuaj xyuas zoo. Hauv qab no yog cov kev daws teeb meem tshwj xeeb:
Kev Tswj Xyuas Qhov Chaw: Xaiv cov ntaub ntawv raug cai kom txo qis tom qab tsim khoom "Rework Risks"
Cov ntaub ntawv raw yog lub hauv paus ntawm qhov zoo thiab qhov yuav tsum tau ua ua ntej rau kev ua haujlwm. Cov ntaub ntawv tsis zoo lossis tsis sib haum ua rau cov khoom siv tsis tu ncua rau kev hloov kho (xws li tshem tawm cov blockages, tuav pov tseg), ncaj qha txo kev ua haujlwm. Tsom ntsoov rau peb yam tseem ceeb ntawm cov khoom siv raw:
1.PVC Resin: Ua qhov tseem ceeb "High Purity + Application-Specific Types"
• Qauv Matching:Xaiv cov resin nrog qhov tsim nyog K-tus nqi raws li lub thickness ntawm lub shrink zaj duab xis. Rau cov yeeb yaj kiab nyias (0.01–0.03 mm, piv txwv li, ntim khoom noj), xaiv cov resin nrog K-tus nqi ntawm 55–60 (zoo fluidity rau yooj yim extrusion). Rau cov yeeb yaj kiab tuab (0.05 hli +, piv txwv li, ntim pallet), xaiv cov khoom siv nrog K-tus nqi ntawm 60-65 (siab zog thiab tsim kua muag). Qhov no tiv thaiv cov yeeb yaj kiab tsis sib xws uas tshwm sim los ntawm cov resin fluidity tsis zoo.
• Purity Control:Xav kom cov neeg xa khoom los muab cov ntaub ntawv qhia txog purity resin, xyuas kom cov residual vinyl chloride monomer (VCM) cov ntsiab lus yog <1 ppm thiab impurity (xws li, plua plav, low-molecular polymers) cov ntsiab lus yog <0.1%. Cov impurities tuaj yeem txhaws extrusion tuag thiab tsim cov pinholes, xav tau sijhawm ntxiv rau kev tu thiab cuam tshuam rau kev ua haujlwm.
2.Additives: Tsom ntsoov rau "High Efficiency, Compatibility, thiab Ua Raws"
• Stabilizers:Hloov cov hmoov lead ntsev stabilizers (tshuaj lom thiab ua rau yellowing) nrogcalcium-zinc (Ca-Zn)Composite stabilizers. Cov no tsis tsuas yog ua raws li cov cai xws li EU REACH thiab Tuam Tshoj 14th Tsib Xyoo Plan tab sis kuj txhim kho thermal stability. Thaum extrusion kub ntawm 170-200 ° C, lawv txo PVC degradation (tiv thaiv yellowing thiab brittleness) thiab txo cov khib nyiab ntau tshaj 30%. Rau Ca-Zn qauv nrog "ua-hauv lubricants," lawv kuj txo qhov kev sib txhuam tuag thiab nce extrusion ceev los ntawm 10-15%.
• Plasticizers:Ua ntej DOTP (dioctyl terephthalate) dua li cov tshuaj DOP (dioctyl phthalate). DOTP muaj kev sib raug zoo nrog PVC resin, txo "exudates" ntawm cov yeeb yaj kiab nto (tsis txhob yob cov nplaum thiab txhim kho pob tshab) thaum txhim kho qhov sib xws (shrinkage npaum li cas tuaj yeem tswj tau hauv ± 3%).
• ntim khoom kom zoo nkauj) • Functional Additives:Rau cov yeeb yaj kiab uas yuav tsum tau muaj pob tshab (xws li, ntim cov tshuaj pleev ib ce), ntxiv 0.5-1 phr ntawm cov lus qhia meej (piv txwv li, sodium benzoate). Rau kev siv cov yeeb yaj kiab sab nraum zoov (piv txwv li, ntim tshuaj pleev ib ce), ntim cov cuab yeej vaj), ntxiv 0.3-0.5 phr ntawm UV absorber los tiv thaiv yellowing ntxov ntxov thiab txo cov khoom seem.
3.Cov Khoom Pab Txhawb: Zam "Poob Losses"
• Siv high-purity thinners (piv txwv li, xylene) nrog cov dej noo <0.1%. Moisture ua rau huab cua npuas thaum extrusion, yuav tsum tau downtime rau degassing (nkim 10-15 feeb ib zaug).
• Thaum rov siv dua ntug trim, xyuas kom meej cov ntsiab lus impurity hauv cov khoom siv rov ua dua yog <0.5% (filterable ntawm 100-mesh screen) thiab qhov feem ntawm cov khoom siv rov ua dua tsis pub tshaj 20%. Cov khoom siv rov ua dua ntau dhau ua rau cov yeeb yaj kiab muaj zog thiab pob tshab.
Equipment Optimization: Txo "Downtime" thiab txhim kho "Operational Precision"
Lub hauv paus ntawm kev ua haujlwm ntau lawm yog "cov khoom siv ua haujlwm tau zoo". Kev tiv thaiv kev saib xyuas thiab kev hloov kho automation yog xav tau los txo qis qis, thaum txhim kho cov cuab yeej precision ua kom zoo.
1.Extruder: Precise Temperature Control + Regular Die Cleaning kom tsis txhob "blockages thiab daj"
• Segmented Temperature Control:Raws li cov yam ntxwv melting ntawm PVC resin, faib cov extruder chim rau hauv 3-4 qhov kub ntawm thaj chaw: pub cheeb tsam (140-160 ° C, preheating resin), compression zone (170-180 ° C, melting resin), metering cheeb tsam (180-200 ° C, stabilizing lub yaj 75 ° C), thiab tiv thaiv lub taub hau tuag (1-9 ° C), 1. degradation). Siv qhov ntsuas kub ntse (piv txwv li, PLC + thermocouple) kom ntsuas qhov kub thiab txias tsis pub dhau ± 2 ° C. Qhov kub ntau dhau ua rau PVC yellowing, thaum qhov kub tsis txaus ua rau tsis tiav resin melting thiab "ntses-qhov muag" tsis xws luag (yuav tsum tau downtime rau kev kho).
• Regular Die Cleaning:Ntxuav cov khoom seem carbonized (PVC degradation khoom) los ntawm lub taub hau tuag txhua 8-12 teev (los yog thaum lub sij hawm hloov khoom siv) siv ib tug tshwj xeeb tooj liab txhuam (kom tsis txhob khawb lub di ncauj tuag). Rau qhov chaw tuag tuag, siv lub tshuab ntxhua khaub ncaws ultrasonic (30 feeb ib lub voj voog). Cov khoom siv carbonized ua rau cov pob dub ntawm cov yeeb yaj kiab, xav tau phau ntawv txheeb xyuas cov khib nyiab thiab txo kev ua haujlwm.
2.Txias System: Uniform Cooling kom paub tseeb tias "Zaj yeeb yaj kiab Flatness + Shrink Uniformity"
• Cooling Roll Calibration:Calibrate qhov parallelism ntawm peb lub txias yob txhua hli uas siv lub laser theem (siab ntev <0.1 hli). Ib txhij, siv lub ntsuas kub infrared los saib xyuas qhov kub ntawm qhov chaw yob (tswj ntawm 20-25 ° C, qhov kub sib txawv <1 ° C). Qhov kub tsis sib xws ua rau cov yeeb yaj kiab txias tsis sib haum, ua rau qhov sib txawv ntawm qhov sib txawv (xws li, 50% shrinkage ntawm ib sab thiab 60% ntawm lwm qhov) thiab yuav tsum tau rov ua haujlwm ntawm cov khoom tiav.
• Cua Ring Optimization:Rau cov txheej txheem cua tshuab (siv rau qee cov yeeb yaj kiab nyias nyias), kho cov cua sib xws ntawm lub nplhaib cua. Siv lub anemometer kom ntseeg tau tias qhov sib txawv ntawm qhov cua nrawm ntawm qhov kev taw qhia ntawm lub nplhaib cua yog <0.5 m / s. Tsis sib xws cua ceev destabilizes zaj duab xis npuas, ua rau "thickness deviations" thiab ua pov tseg.
3.Winding thiab Edge Trim Recycling: Automation txo "Kev cuam tshuam ntawm phau ntawv"
• Automatic Winder:Hloov mus rau lub winder nrog "kaw-voj nro tswj". Kho winding nro nyob rau lub sijhawm tiag tiag (tseem raws li cov yeeb yaj kiab tuab: 5-8 N rau cov yeeb yaj kiab nyias, 10-15 N rau cov yeeb yaj kiab tuab) kom tsis txhob "xws li winding" (yuav tsum tau phau ntawv rewinding) lossis "tight winding" (ua rau zaj duab xis ncab thiab deformation). Winding efficiency yog nce los ntawm 20%.
• On-Site Tam sim no Scrap Recycling:Nruab ib qho "ntug trim crushing-feeding integrated system" ntawm ib sab ntawm lub tshuab slitting. Tam sim ntawd crushed ntug trim (5-10 mm dav) generated thaum lub sij hawm slitting thiab pub nws rov qab mus rau lub extruder hopper ntawm ib tug pipeline (sib tov nrog cov khoom tshiab ntawm ib tug ratio ntawm 1: 4). Ntug trim recycling tus nqi nce los ntawm 60% mus rau 90%, txo cov khoom siv pov tseg thiab tshem tawm lub sijhawm poob los ntawm kev tuav cov khoom seem.
Txheej txheem Refinement: Refine "Parameter Control" kom tsis txhob "Batched Defects"
Qhov sib txawv me me ntawm cov txheej txheem tsis tuaj yeem ua rau muaj kev hloov pauv zoo, txawm tias muaj cov khoom siv tib yam thiab cov khoom siv raw. Tsim kom muaj "cov lus ntsuas ntsuas ntsuas" rau peb cov txheej txheem tseem ceeb - extrusion, txias, thiab slitting - thiab saib xyuas kev hloov kho hauv lub sijhawm.
1.Extrusion txheej txheem: Tswj "Lub Siab Siab + Extrusion Ceev"
• Melt Pressure: Siv lub ntsuas ntsuas siab los saib xyuas lub siab yaj ntawm qhov tuag inlet (tswj ntawm 15–25 MPa). Kev kub siab dhau (30 MPa) ua rau tuag taus thiab yuav tsum muaj sijhawm rau kev saib xyuas; Lub siab tsis txaus (10 MPa) ua rau cov dej ntws tsis zoo thiab cov yeeb yaj kiab tsis sib xws.
• Extrusion ceev: Teem raws li zaj duab xis thickness —20–25 m/min rau nyias films (0.02 mm) thiab 12–15 m/min rau tuab films (0.05 mm). Tsis txhob "traction stretching" (txo lub zog ntawm zaj duab xis) tshwm sim los ntawm kev kub ceev los yog "muaj peev xwm pov tseg" los ntawm kev ceev ceev.
2.Txias Txheej Txheem: Kho "Lub Sijhawm Txias + Cua Kub"
• Lub Sij Hawm Txias: Tswj cov zaj duab xis lub sij hawm nyob rau ntawm qhov txias yob ntawm 0.5-1 thib ob (ua tiav los ntawm kev kho qhov nrawm nrawm) tom qab extrusion los ntawm qhov tuag. Lub sij hawm nyob tsis txaus (<0.3 vib nas this) ua rau ua kom tsis tiav zaj duab xis txias thiab ua raws thaum winding; Lub sij hawm nyob ntau dhau (> 1.5 vib nas this) ua rau "dej me ntsis" ntawm zaj duab xis nto (txo cov pob tshab).
• Cua Ring Kub: Rau cov txheej txheem cua tshuab, teem lub nplhaib cua kub ntawm 5-10 ° C siab tshaj qhov kub ntawm ambient (piv txwv li, 30-35 ° C rau 25 ° C ambient). Tsis txhob "dhau cia txias" (ua rau muaj kev ntxhov siab sab hauv thiab yooj yim tearing thaum shrinkage) los ntawm huab cua txias ncaj qha mus rau hauv cov yeeb yaj kiab npuas.
3.Slitting txheej txheem: Precise "Dav teeb + Nrawm Tswj"
• Slitting Dav: Siv cov txheej txheem kho qhov muag kho qhov muag los tswj kev txiav slitting precision, kom ntseeg tau qhov dav dav <± 0.5 hli (piv txwv li, 499.5-500.5 hli rau cov neeg siv khoom xav tau dav ntawm 500 mm). Zam cov neeg siv khoom rov qab los ntawm qhov dav sib txawv.
• Slitting Tension: Kho raws li cov yeeb yaj kiab thickness—3–5 N rau cov yeeb yaj kiab nyias thiab 8–10 N rau cov yeeb yaj kiab tuab. Kev nruj ntau dhau ua rau cov yeeb yaj kiab ncab thiab deformation (txo qis qis); tsis txaus nro ua rau xoob zaj duab xis yob (yuav ua rau kev puas tsuaj thaum thauj).
Kev Tshuaj Xyuas Zoo: "Kev Saib Xyuas Hauv Lub Sijhawm Hauv Online + Offline Sampling Verification" txhawm rau tshem tawm "Batched Non-Conformities"
Kev tshawb pom qhov tsis zoo tsuas yog nyob rau theem khoom tiav ua rau tag nrho cov khoom seem (poob ob qho tib si kev ua haujlwm thiab cov nqi). Tsim kom muaj "cov txheej txheem tshuaj xyuas tag nrho":
1.Kev Tshawb Fawb Hauv Online: cuam tshuam "Qhov tsis xws luag tam sim" hauv lub sijhawm tiag tiag
• Thickness soj ntsuam:Nruab ib lub laser thickness gauge tom qab txias yob los ntsuas zaj duab xis thickness txhua txhua 0.5 vib nas this. Teem ib "kev sib txawv ntawm lub tswb" (piv txwv li, ± 0.002 hli). Yog tias qhov chaw pib dhau lawm, lub kaw lus cia li kho qhov nrawm nrawm lossis tuag qhov sib txawv kom tsis txhob muaj cov khoom lag luam tsis sib haum.
• Kev tshuaj xyuas qhov tshwm sim:Siv lub tshuab tsis pom kev los luam theej duab zaj duab xis, txheeb xyuas qhov tsis xws luag xws li "dub me ntsis, pinholes, thiab creases" (precision 0.1 hli). Lub kaw lus cia li cim qhov chaw tsis raug thiab lub tswb, tso cai rau cov neeg ua haujlwm nres kev tsim khoom tam sim ntawd (xws li, ntxuav qhov tuag, kho lub nplhaib cua) thiab txo cov khoom pov tseg.
2.Offline Inspection: Txheeb xyuas "Key Performance"
Ua piv txwv ib qho tiav yob txhua 2 teev thiab sim peb qhov ntsuas tseem ceeb:
• Shrinkage tus nqi:Txiav 10 cm × 10 cm cov qauv, muab tso rau hauv qhov cub 150 ° C rau 30 vib nas this, thiab ntsuas shrinkage nyob rau hauv lub tshuab kev taw qhia (MD) thiab transverse direction (TD). Yuav tsum tau 50-70% shrinkage hauv MD thiab 40-60% hauv TD. Kho plasticizer piv lossis extrusion kub yog qhov sib txawv tshaj ± 5%.
• Pob tshab:Kuaj nrog lub ntsuas cua kub hnyiab, xav kom haze <5% (rau cov yeeb yaj kiab pob tshab). Yog tias haze tshaj tus qauv, xyuas cov purity resin los yog stabilizer dispersion.
• Tensile zog:Ntsuas nrog lub tshuab ntsuas tensile, xav tau lub zog tensile ntev ≥20 MPa thiab transverse tensile zog ≥18 MPa. Yog tias lub zog tsis txaus, kho cov resin K-tus nqi lossis ntxiv cov tshuaj antioxidants.
"Synergistic Logic" ntawm Efficiency thiab Quality
Kev txhim kho qhov ua tau zoo ntawm PVC shrink zaj duab xis ntau lawm tsom rau "txo qis qis thiab pov tseg," uas yog ua tiav los ntawm kev hloov kho cov khoom siv raw, cov cuab yeej ua kom zoo, thiab kev hloov kho automation. Txhim kho cov chaw ua haujlwm zoo ntawm "tswj kev hloov pauv thiab cuam tshuam qhov tsis xws luag," txhawb nqa los ntawm cov txheej txheem kho kom zoo thiab kev tshuaj xyuas tag nrho. Qhov ob tsis yog qhov sib txawv: piv txwv li, xaiv kev ua haujlwm siabCa-Zn stabilizerstxo PVC degradation (kev txhim kho zoo) thiab nce extrusion ceev (txhim kho efficiency); Kev tshuaj xyuas hauv online cuam tshuam qhov tsis xws luag (ua kom zoo) thiab tsis txhob batch seem (txo qis kev ua haujlwm poob).
Cov tuam txhab lag luam yuav tsum tau hloov pauv los ntawm "kev ua kom zoo ib qho" mus rau "kev txhim kho kom zoo," kev koom ua ke cov khoom siv raw, khoom siv, txheej txheem, thiab cov neeg ua haujlwm rau hauv lub voj kaw. Qhov no ua rau kev ua tiav ntawm cov hom phiaj xws li "20% ntau dua qhov muaj peev xwm, 30% qis tus nqi pov tseg, thiab <1% tus neeg siv khoom rov qab los," tsim kom muaj kev sib tw hauv PVC shrink zaj duab xis ua lag luam.
Post lub sij hawm: Nov-05-2025