Ukusebenza kakuhle kwemveliso kunye nomgangatho wefilimu ecuthekileyo yePVC imisela ngokuthe ngqo umthamo wemveliso weshishini, iindleko, kunye nokhuphiswano lwentengiso. Ukusebenza okuphantsi kukhokelela ekumoshweni komthamo kunye nokulibaziseka kokuhanjiswa, ngelixa iziphene ezisemgangathweni (ezifana nokucutha okungalinganiyo kunye nokungafihli kakuhle) kubangela izikhalazo kunye nembuyekezo yabathengi. Ukufezekisa ukuphuculwa kabini "kokusebenza okuphezulu + umgangatho ophezulu," iinzame ezicwangcisiweyo ziyafuneka kwimilinganiselo emine engundoqo: ukulawulwa kwezinto eziluhlaza, ukulungiswa kwezixhobo, ukulungiswa kwenkqubo, ukuhlolwa komgangatho. Apha ngezantsi kukho izisombululo ezithe ngqo, ezinokuthathwa:
Ulawulo loMthombo: Khetha iMathiriyeli eLungileyo yokuNciphisa iMveliso “yeMingcipheko yokuSetyenzwa kwakhona”
Iimathiriyeli ekrwada zisisiseko somgangatho kunye nemfuneko yokusebenza kakuhle. Izinto eziphantsi okanye ezingahambelaniyo ezikrwada zibangela ukumiswa kwemveliso rhoqo ukulungiselela uhlengahlengiso (umzekelo, ukucoca imiqobo, ukuphatha inkunkuma), ukunciphisa ngokuthe ngqo ukusebenza kakuhle. Gxininisa kwiintlobo ezintathu eziphambili zemathiriyeli ekrwada:
1.I-PVC Resin: Beka phambili "Ubunyulu obuPhezulu + Iintlobo zeSicelo eziKhethekileyo"
• Ukuthelekisa imodeli:Khetha i-resin enexabiso le-K elifanelekileyo ngokusekelwe kubukhulu befilimu yokushwabana. Kwiifilimu ezincinci (0.01-0.03 mm, umzekelo, ukupakishwa kokutya), khetha i-resin ene-K-value ye-55-60 (i-fluidity efanelekileyo yokukhupha lula). Kwiifilimu ezingqingqwa (0.05 mm +, umzekelo, ukupakishwa kwe-pallet), khetha i-resin ene-K-value ye-60-65 (amandla aphezulu kunye nokumelana nokukrazula). Oku kuthintela ubukhulu befilimu obungalinganiyo obubangelwa kukunganyibiliki kakuhle kweresin.
• Ulawulo Lobunyulu:Funa ababoneleli ukuba babonelele ngeengxelo zokuhlanjululwa kwe-resin, ukuqinisekisa ukuba i-vinyl chloride monomer (VCM) eseleyo yi- <1 ppm kunye nokungcola (umz., uthuli, i-polymers ephantsi-molekyuli) umxholo ngu- <0.1%. Ukungcola kunokuvala i-extrusion iyafa kwaye yenze i-pinholes, efuna ixesha elongezelelweyo lokucoca kunye nokuchaphazela ukusebenza kakuhle.
2.Izongezo: Gxininisa “kuLungelo oluPhezulu, ukuNhambelana, kunye nokuThobela”
• Izinzisi:Faka izizinzisi zetyuwa ngelothe eziphelelwe lixesha (ezinetyhefu kwaye ziqhele ukuba tyheli) nazoicalcium-zinc (Ca-Zn)izinzisi ezidibeneyo. Oku akuhambelani kuphela nemimiselo efana ne-EU REACH kunye neSicwangciso se-14 seMinyaka emiHlanu saseTshayina kodwa zikwaphucula uzinzo lobushushu. Kwiqondo lobushushu le-extrusion ye-170-200 ° C, banciphisa ukuthotywa kwe-PVC (ukuthintela ukutyheli kunye nokuqina) kwaye banciphise amazinga enkunkuma ngaphezu kwe-30%. Kwiimodeli ze-Ca-Zn "ezinezithambiso ezakhelwe ngaphakathi," zikwanciphisa i-friction kunye nokunyusa isantya sokukhupha nge-10-15%.
• IiPlastiki:Beka phambili i-DOTP (i-dioctyl terephthalate) kune-DOP yesintu (i-dioctyl phthalate). I-DOTP inokuhambelana okungcono kunye ne-PVC resin, ukunciphisa "i-exudates" kumphezulu wefilimu (ukuphepha ukunamathela kwi-roll kunye nokuphucula ukungafihli) ngelixa uphucula ukufana kwe-shrink (ukuguqulwa kwesantya sokunciphisa kunokulawulwa ngaphakathi ± 3%).
• ukupakishwa kwezithambiso)• Izongezo ezisebenzayo:Kwiifilimu ezifuna ukucaca (umzekelo, ukupakishwa kwezithambiso), yongeza i-0.5-1 phr ye-clarifier (umzekelo, i-sodium benzoate). Kwiifilimu ezisetyenziselwa ngaphandle (umzekelo, ukupakishwa kwezithambiso), ukupakishwa kwesixhobo segadi), yongeza i-0.3-0.5 phr ye-Absorption ye-UV ukuthintela ukutyheli kwangaphambi kwexesha kunye nokunciphisa i-scrap yemveliso egqityiweyo.
3.Izinto eziNcedisayo: Kuphephe “Ilahleko Efihlakeleyo”
• Sebenzisa izinto zokuthambisa ezicocekileyo (umzekelo, ixylene) ezinobumanzi obungaphantsi kwe-0.1%. Ubumanzi bubangela amaqamza omoya ngexesha le-extrusion, efuna ixesha lokuphumla lokucima (ukuchitha imizuzu eyi-10-15 ngesiganeko ngasinye).
• Xa uhlaziywa i-edge trim, qinisekisa isiqulatho sokungcola kwimathiriyeli esetyenzisiweyo yi-<0.5% (ihluzwa nge-100-mesh screen) kwaye umyinge wemathiriyeli esetyenzisiweyo ayidluli kwi-20%. Izinto ezisetyenziswe ngokugqithisileyo zinciphisa amandla efilimu kunye nokungafihli.
UPhuculo lweSixhobo: Nciphisa "ixesha lokuphumla" kwaye uphucule "Ukuchaneka kokuSebenza"
Undoqo wokuphumelela kwemveliso “lizinga lokusebenza kwezixhobo”. Ukugcinwa kokuthintela kunye nokuphuculwa kwe-automation kuyadingeka ukunciphisa ixesha lokunciphisa, ngelixa ukuphuculwa kwezixhobo ezichanekileyo kuqinisekisa umgangatho.
1.I-Extruder: Ulawulo lobushushu obuchanekileyo + ukucocwa rhoqo ukuFa ukunqanda “iibhloko kunye nokuMthubi”
• Ulawulo loBuqondo olwahlukeneyo:Ngokusekelwe kwiimpawu zokunyibilika kwe-PVC resin, ulwahlule umgqomo we-extruder kwiindawo ze-3-4 zeqondo lokushisa: indawo yokutya (140-160 ° C, i-resin preheating), indawo yoxinzelelo (170-180 ° C, i-resin enyibilikayo), indawo yokulinganisa (180-200 ° C, ukuzinzisa ukunyibilika kwe-175 ° C, kunye nokuthintela i-175 ° C, kunye ne-175 ° C, kunye nokuthintela ukunyibilika kwe-175 ° C, kunye ne-175 ° C. ukuthotywa). Sebenzisa inkqubo ekrelekrele yokulawula ubushushu (umz., PLC + thermocouple) ukugcina ukuguquguquka kobushushu ngaphakathi ±2°C. Ubushushu obugqithisileyo bubangela ukuba i-PVC ibe tyheli, ngelixa ubushushu obungonelanga bukhokelela ekunyibilikeni kwe-resin engaphelelanga kunye neziphene "zeliso lentlanzi" (ezifuna ixesha lokuphumla).
• Ukucocwa kweDie rhoqo:Coca izinto ezishiyekileyo zekhabhoni (imveliso yokuthotywa kwePVC) ukusuka kwintloko yokufa rhoqo kwiiyure ezi-8-12 (okanye ngexesha lokutshintsha kwezinto) usebenzisa ibrashi yobhedu ezinikeleyo (ukuphepha ukukrwela umlebe wokufa). Kwiindawo ezifileyo, sebenzisa isicoci se-ultrasonic (imizuzu engama-30 kumjikelo ngamnye). Izinto ezenziwe ngekhabhoni zibangela amabala amnyama kwifilimu, efuna ukuhlelwa kwenkunkuma ngesandla kunye nokunciphisa ukusebenza kakuhle.
2.Inkqubo yokupholisa: Ukupholisa okufanayo ukuqinisekisa ukuba "iFilm Fltiness + Shrink Uniformity"
• Ulungelelwaniso loLuhlu lokupholisa:Ukulinganisa ukuhambelana kwemiqulu emithathu yokupholisa ngenyanga usebenzisa inqanaba le-laser (ukunyamezela <0.1 mm). Ngexesha elifanayo, sebenzisa i-thermometer ye-infrared ukujonga ubushushu bomphezulu we-roll (ukulawulwa kwi-20-25 ° C, umahluko weqondo lokushisa <1 ° C). Ukushisa okungalinganiyo kwe-roll kubangela amazinga okupholisa ifilimu angahambelaniyo, okukhokelela ekuhlukeni kwe-shrinkage (umzekelo, i-50% ye-shrinkage kwelinye icala kunye ne-60% kwelinye) kwaye ifuna ukusetyenzwa kwakhona kweemveliso ezigqityiweyo.
• ULungiselelo lweRingi yoMoya:Kwinkqubo yefilimu evuthelweyo (esetyenziselwa ezinye iifilimu ezicuthayo ezicuthayo), lungisa ukufana komoya kweringi yomoya. Sebenzisa i-anemometer ukuqinisekisa umahluko wesantya somoya kwicala elijikelezayo lendawo yokuphuma yeringi yomoya ngu <0.5 m/s. Isantya somoya esingalinganiyo siphazamisa iqamza lefilimu, nto leyo ebangela "ukutenxa kobungqingqwa" kunye nokwanda kwenkunkuma.
3.I-Winding kunye ne-Edge Trim Recycling: Ukuzenzekela kunciphisa “uNgenelelo okwenziwa ngesandla”
• I-Winder ezenzekelayo:Tshintshela kwi-winder “enolawulo loxinzelelo oluvaliweyo”. Lungisa i-winding tension ngexesha lokwenyani (iseti esekwe kubukhulu befilimu: 5–8 N yeefilimu ezibhityileyo, 10–15 N yeefilimu ezishinyeneyo) ukunqanda “ukujija okuxekethileyo” (okufuna ukubuyisela umva ngesandla) okanye “ukujika okuqinileyo” (okubangela ukolula kwefilimu kunye nokuguqulwa). Ukuphumelela kokuvuthuza kunyuke nge-20%.
• Ukurisayikilishwa kweSilaphu kwangoku kwiNdawo:Faka "i-edge trim crushing-feeding system edibeneyo" ecaleni komatshini wokuqhawula. Ngokukhawuleza tyumza i-edge trim (5-10 mm ububanzi) eyenziwe ngexesha lokunqunyulwa kwaye uyibuyisele kwi-extruder hopper ngokusebenzisa umbhobho (uxutywe nemathiriyeli entsha kwi-1: 4 ratio). Izinga lokurisayikilishwa kwe-Edge trim liyenyuka ukusuka kwi-60% ukuya kwi-90%, linciphisa inkunkuma yezinto ezikrwada kunye nokuphelisa ilahleko yexesha ekuphathweni kwe-scrap ngesandla.
Ucokiso lweNkqubo: Cokisa “uLawulo lweParameter” ukuNqanda “Iziphene eziBathiweyo”
Umahluko omncinci kwiiparamitha zenkqubo kunokukhokelela ekuhlukeni komgangatho obalulekileyo, nokuba nesixhobo esifanayo kunye nemathiriyeli ekrwada. Phuhlisa "itheyibhile yokulinganisa ipharamitha" kwiinkqubo ezintathu eziphambili-i-extrusion, ukupholisa, kunye ne-slitting-kunye nokubeka iliso kuhlengahlengiso ngexesha langempela.
1.Inkqubo ye-Extrusion: Lawula "Melt Pressure + Extrusion Speed"
• I-Melt Pressure: Sebenzisa inzwa yoxinzelelo ukujonga uxinzelelo lwe-melted kwi-die inlet (elawulwa kwi-15-25 MPa). Uxinzelelo olugqithisileyo (i-30 MPa) ibangela ukuvuza okufayo kwaye idinga ixesha lokunciphisa ukulungiswa; uxinzelelo olungonelanga (10 MPa) lubangela ukunyibilika okungahambi kakuhle kunye nobukhulu befilimu obungalinganiyo.
• I-Extrusion Speed: Seta ngokusekelwe kubukhulu befilimu—20–25 m/min kwiifilimu ezibhityileyo (0.02 mm) kunye ne-12–15 m/min kwiifilimu ezishinyeneyo (0.05 mm). Gwema "ukunwebeka okugqithisileyo" (ukunciphisa amandla efilimu) okubangelwa isantya esiphezulu okanye "inkunkuma yomthamo" ukusuka kwisantya esiphantsi.
2.Inkqubo yokuPholisa: Lungisa “ixesha lokupholisa + lobushushu bomoya”
• Ixesha lokupholisa: Lawula ixesha lokuhlala kwefilimu kwimiqulu yokupholisa kwi-0.5-1 yesibini (iphunyezwe ngokulungelelanisa isantya se-traction) emva kokuphuma kwi-die. Ixesha lokuhlala elinganeleyo (<0.3 imizuzwana) likhokelela ekupholiseni kwefilimu engaphelelanga kunye nokunamathela ngexesha lokuphefumula; ixesha lokuhlala eligqithiseleyo (> imizuzwana ye-1.5) ibangela "amabala amanzi" kwindawo yefilimu (ukunciphisa ukukhanya).
• Ubushushu beRingi yoMoya: Kwinkqubo yefilimu evuthelweyo, seta iqondo lobushushu leringi yomoya libe ngu-5–10°C ngaphezulu kunobushushu obukwi-ambient (umz., 30–35°C kwi-25°C ambient). Gwema "ukupholisa ngokukhawuleza" (okubangela uxinzelelo lwangaphakathi oluphezulu kunye nokukrazula ngokulula ngexesha lokucutheka) ukusuka kumoya obandayo ovuthela ngokuthe ngqo kwi-bubble yefilimu.
3.Inkqubo yokuSlitting: Ngokuchanekileyo "Ukuseta ububanzi + noLawulo lweTension"
• UkuSlitting Ububanzi: Sebenzisa isixokelelwano se-optical edge guide ukulawula ukuchaneka kokucanda, ukuqinisekisa ukunyamezela ububanzi <±0.5 mm (umz., 499.5–500.5 mm kububanzi obufunwa ngumthengi wama-500 mm). Ziphephe iimbuyekezo zabathengi ezibangelwa kukunxaxha kobubanzi.
• I-Slitting Tension: Lungisa ngokusekwe kubukhulu befilimu—3–5 N yeefilim ezincinci kunye ne-8–10 N yeefilim ezishinyeneyo. Uxinzelelo olugqithisileyo lubangela ukunwenwa kwefilimu kunye nokuguqulwa (ukunciphisa izinga lokunciphisa); Uxinzelelo olunganeleyo lukhokelela kwimiqulu yefilimu ekhululekileyo (enokonakala ngexesha lokuthutha).
Ukuhlolwa koMgangatho: "Ixesha lokwenyani lokuJonga kwi-Intanethi + uQinisekiso lweSampuli engaxhunyiwe kwi-intanethi" ukuze kupheliswe "iBatched non-Conformities"
Ukufumanisa iziphene ezisemgangathweni kuphela kwinqanaba lemveliso egqityiweyo kukhokelela kwi-batch scrap epheleleyo (ukulahlekelwa kokubini ukusebenza kakuhle kunye neendleko). Seka "inkqubo yokuhlola inkqubo epheleleyo":
1.Ukuhlolwa kwe-Intanethi: Yamkela “Iziphene zangoko” ngexesha langempela
• Uhlolo lokutyeba:Faka igeyiji yobukhulu belaser emva kwemiqulu yokupholisa ukulinganisa ubukhulu befilimu rhoqo ngemizuzwana eyi-0.5. Seta "umda we-alarm etenxayo" (umzekelo, ± 0.002 mm). Ukuba umqobo ugqithisiwe, inkqubo ilungelelanisa ngokuzenzekelayo isantya sokugqithisa okanye i-gap yokufa ukuphepha ukuveliswa okuqhubekayo kweemveliso ezingahambelaniyo.
• Ukuhlolwa kwenkangeleko:Sebenzisa inkqubo yokujonga umatshini ukuskena umphezulu wefilimu, uchonga iziphene "ezinje ngamabala amnyama, imingxunya, kunye namaqhekeza" (ukuchaneka 0.1 mm). Inkqubo iphawula ngokuzenzekelayo indawo enesiphene kunye ne-alamu, evumela abaqhubi ukuba bayeke ukuvelisa ngokukhawuleza (umzekelo, ukucoca i-die, ukulungisa i-ring air) kunye nokunciphisa inkunkuma.
2.Ukuhlolwa ngaphandle kwe-intanethi: Qinisekisa "Ukusebenza okuPhambili"
Isampulu umqulu omnye ogqityiweyo rhoqo kwiiyure ezi-2 kwaye uvavanye izikhombisi ezintathu eziphambili:
• Ixabiso lokushwabana:Sika i-10 cm × 10 iisampulu ze-cm, zitshise kwi-oven ye-150 ° C imizuzwana engama-30, kwaye ulinganise i-shrinkage kwindlela yomshini (MD) kunye ne-transverse direction (TD). Ifuna i-50-70% ye-shrinkage kwi-MD kunye ne-40-60% kwi-TD. Lungisa umlinganiselo weplastizer okanye ubushushu be-extrusion ukuba ukutenxa kungaphezu kwe-±5%.
• Ukungafihli:Vavanya ngemitha yenkungu, efuna inkungu <5% (kwiifilimu ezicacileyo). Ukuba inkungu igqithise umgangatho, jonga ukucoceka kweresin okanye ukusasazeka kwe-stabilizer.
• Tensile strength:Uvavanyo ngomatshini wokuvavanya ukuqina, odinga amandla e-longitudinal tensile ≥20 MPa kunye ne-transverse tensile amandla ≥18 MPa. Ukuba amandla awonelanga, lungisa ixabiso le-resin K okanye wongeze i-antioxidants.
I "Synergistic Logic" yokuSebenza kunye noMgangatho
Ukuphucula ukusebenza kakuhle kwePVC shrink ukuveliswa kwefilimu kugxile "ekunciphiseni ixesha lokuphumla kunye nenkunkuma," ephunyezwa ngokuhlengahlengiswa kwezinto ezikrwada, ukulungiswa kwezixhobo, kunye nokuphuculwa kwe-automation. Ukuphucula amaziko asemgangathweni "ekulawuleni ukuguquguquka kunye nokuthintela iziphene," ezixhaswa ngokucokisa inkqubo kunye nokuhlolwa kwenkqubo epheleleyo. Ezi zimbini azichasananga: umzekelo, ukukhetha ukusebenza kakuhleIzinzisi zeCa-Znkunciphisa ukuthotywa kwePVC (ukuphucula umgangatho) kunye nokwandisa isantya se-extrusion (ukuphucula ukusebenza kakuhle); Iinkqubo zokuhlola i-intanethi zithintela iziphene (ukuqinisekisa umgangatho) kwaye zigweme i-batch scrap (ukunciphisa ilahleko yokusebenza kakuhle).
Amashishini kufuneka atshintshe ukusuka “kwindawo enye yokuphucula” aye “kuhlaziyo olucwangcisiweyo,” ukudibanisa imathiriyeli ekrwada, izixhobo, iinkqubo, kunye nabasebenzi kwindawo evaliweyo. Oku kuvumela ukufezekiswa kweenjongo ezifana ne "20% ephezulu amandla okuvelisa, i-30% yesantya esisezantsi senkunkuma, kunye ne-<1% yezinga lokubuyiswa kwabathengi," ukuseka umda wokukhuphisana kwimarike yefilimu ye-PVC.
Ixesha lokuposa: Nov-05-2025