Imigca yokwaleka ye-Extrusion ihlala okanye ifa kwinani elinye: amandla e-peel phakathi kwe-polymer etyhidiweyo kunye ne-substrate. I-Extrusion i-adhesion ye-coating igqitywe kwifestile yemizuzwana embalwa phakathi kwesikhululo sonyango kunye ne-nip, kwaye akukho xabiso le-tuning esezantsi enokuthi ihlangule iwebhu engene kwifa kunye namandla angaphezulu angalunganga. Esi sikhokelo sibandakanya izicwangciso zonyango, ukuziphatha kwe-substrate kunye neenguqu zomgca ezinikezela ngokuthembekileyo, iibhondi eziphindaphindayo kwi-extrusion coating, i-extrusion lamination kunye nemigca ye-tandem.
Kutheni i-Extrusion Coating Adhesion yiNgxaki yaMandla oMphezulu
I-polyethylene enyibilikisiweyo ishiya idayizi malunga ne-300℃kwaye ifike kwi-nip phakathi kwesibini okanye ezimbini. Kuloo festile kufuneka imanzise i-substrate ngokupheleleyo kwaye yenze iibhondi zesibini kulo lonke ujongano. Ukumanzisa kwenzeka kuphela xa i-substrate yamandla engaphezulu ingaphezulu koxinzelelo lomphezulu wokunyibilika, ethi kwi-LDPE ibe malunga ne-31 yeedynes ngesentimitha kwaye kwii-copolymers ezifana ne-EAA zinokuba ngaphantsi.
Ifilimu yepololefin engaphathwanga ihlala kwi-29 ukuya kwi-31 dynes, kanye kumda. Yiyo loo nto i-extrusion incamathela yokwambathisa isilela kwisitokhwe esinganyangwanga kwaye kutheni unyango lwe-corona lusemgangathweni kuwo wonke umgca wokutyabeka we-extrusion. Unyango luphakamisa umphezulu ukuya kwi-38 ukuya kwi-42 dynes kwaye, okona kubaluleke kakhulu, ukwazisa amaqela asebenzayo e-polar enza iibhondi zeekhemikhali zangempela kunye ne-melt, kungekhona nje uqhagamshelwano lwe-van der Waals.
Intsingiselo esebenzayo kukuba awukwazi ukugweba ukulungela ngenqanaba le-dyne wedwa. Umphezulu ofunda iidynes ezingama-40 ngenxa yokungcoliseka-burhabaxa obuqhutywayo uziphethe ngendlela eyahlukileyo kuleyo efunda iidynes ezingama-40 ngenxa ye-oxidation yokwenyani. Imicimbi yokutsha: imiphezulu enyangwayo yobudala, kunye nokuncamatheliswa kwe-extrusion coating kwehla ngokulinganisekayo xa umsantsa phakathi konyango kunye ne-nip udlula imizuzwana embalwa, ngakumbi kwiintsuku ezishushu nezifumileyo.
Ukuseta aMandla eCorona oKuncamathela okuNxulutywayo
Uxinaniso lweWatt lulawulo oluguquguqukayo, oluchazwa njengeewathi ngesentimitha yesikwere ngomzuzu womgangatho ocociweyo. Ukwaleka i-polyolefin kwifilimu okanye kwifoyile, ibhendi yokuqala eyi-6 ukuya kwi-12 W/cm²/min igquma uninzi lwemigca yemveliso.
Bala ngokuthe ngqo: ubuninzi be-watt bulingana namandla asetyenzisiweyo ewonke ahlulwe yimveliso yobubanzi bewebhu kunye nesantya somgca. Umgca oyi-1.6 m ububanzi obaleka kwi-200 m/min usebenzisa i-20 kW izivuno malunga ne-6.3 W/cm²/min. Phinda kabini isantya kububanzi obungatshintshiyo kwaye kufuneka amandla aphindwe kabini ukubamba inqanaba lonyango elifanayo.
Imigibe emibini ibamba abaqhubi ngokuphindaphindiweyo. Okokuqala, ukonyusa amandla ngaphaya kwendawo yokuncipha kwembuyekezo kutshisa umphezulu, kudala inkunkuma-yemolekyuli{2}}enobunzima obuphantsi kwaye eneneni yenze buthathaka ukuncamatheliswa kwe-extrusion ye-coating ngokushiya umaleko obuthathaka womda. Okwesibini, ukusebenzisa amandla amancinane kakhulu ukonga amandla kuvelisa umgangatho ovavanyayo ngoko nangoko kodwa lusilele emva kokwaluphala.
Layisha ngokulinganisa amandla amaxolo, hayi ngokuleqa inombolo yedyne. Yandisa amandla ngeepesenti ezili-10 zamanyathelo de ixolo lamandla ethafa, emva koko ubuyele kwesona sicwangciso sisezantsi esanika umda otofotofo. Leyo yindawo yakho yokumisela imveliso.
Ukuthelekisa Unyango kwi-Substrate
Yonke i-substrate iziphatha ngendlela eyahlukileyo, kwaye izicwangciso ezisebenza kwenye ziya kusilela kwenye.
Ifilimu ye-LDPE kunye ne-LLDPE.Ityala eliqhelekileyo. Ifuna unyango olupheleleyo kwi-38 ukuya kwi-42 dynes. Bukela unyango ngasemva kwiifilimu ezingaphantsi kwe-25 microns, ezibangela ukuvalela kwi-unwind.
I-BOPP.Ubukhazikhazi obuphezulu buthetha ukuba unyango luhlala kufutshane nomphezulu kwaye luguga kancinci kancinci. Iithagethi ze-38 ukuya kwi-40 dynes zidla ngokwaneleyo, kodwa i-extrusion coating adhesion inovakalelo kwii-additives ze-slip ezifudukela kumphezulu kwaye ziphazamise ukudibanisa.
I-PET.Iqala malunga ne 41 dynes ingaphathwanga kwaye idinga nje ukudlula okulula ukufikelela ku 45 ukuya ku 48. Unyango ngaphezulu{3}}yingozi yokwenyani apha kuba umphezulu unokuba ngumgubo.
Ifoyile yeAluminiyam.I-Conductive, ngoko ukukhutshwa kuziphatha ngendlela eyahlukileyo kwaye isigqubuthelo somqulu kufuneka siphathe umthwalo ophezulu we-thermal. Umaleko we-oksidi kwifoyile iyahambelana ngokwekhemikhali kunye namaqela e-polar, yiyo loo nto i-extrusion incamathelisa ukuncamathelisa kwifoyile ihlala ibalasele xa unyango luchanekile.
Iphepha kunye nebhodi.I-Porous kunye nokufuma okubuthathaka. Ithagethi ye-40 ukuya kwi-44 dynes, gcina i-watt density moderate, kwaye ulawule ukufuma, ekubeni umphunga wamanzi kwi-gap ucinezela ukukhutshwa.
Iisubstrates ezicatyiswe kunye nentsimbi.Ezi zidinga-unyango olulula, olulawulwa kakuhle kuba umaleko osebenzayo ubhityile. Umjikelo ocuthiweyo womsebenzi okanye{2}}umatshini wonyango weplasma olawulwayo we-atmosphere uhlala uyimpendulo engcono kune-corona pass.
Iiguquguquko zomgca ezitshintsha i-Extrusion Coating Adhesion
Unyango ligalelo elinye kuphela. Iinguqu ezininzi zomgca zitshintsha iziphumo kwaye kufuneka zilawulwe kunye.
Ixesha phakathi konyango kunye ne-nip.Lo ngowona mahluko uphantsi kakhulu. Gcina indlela imfutshane kangangoko ngoomatshini. Isekondi nganye eyongezelelweyo yokuvezwa ixabisa amaqela e-polar njengoko ephinda aqhelana nobuninzi.
Ubushushu bewebhu.Ukusebenza konyango kuphucula iwebhu efudumeleyo, kunye nenzuzo yokuncamathela kwi-substrate eshushu kwi-nip. Ngokuchaseneyo, ukutshisa okugqithisileyo kugxotha amaqela asanda kwenziwa.
I-ozone kunye nokukhutshwa.I-ozone lunyango nge{0}}imveliso, hayi unyango ngokwalo, kodwa ikwayingozi. Utsalo olwaneleyo lukhusela izixhobo kwaye lugcina umoya we-gap ungaguquguquki, ezinzisa i-extrusion coating adhesion run to run to run.
Nip uxinzelelo kwaye uhlale.Uxinzelelo oluphezulu luqhubela ukunyibilika kumphezulu omncinci {{0}i-porosity kwaye iphucule ukutshixo koomatshini. Oku kuzalisekisa ukudityaniswa kweekhemikhali kunyango kunokuba kufakwe endaweni yayo.
Die kunye nomoya umsantsa.I-Oxidation yokunyibilika kwi-gap yomoya idala amaqela e-polar kwicala le-polymer. Umsantsa womoya omde wonyusa i-oxidation enyibilikayo kwaye unokuhlawula ngokuyinxenye unyango lwe-substrate ebuthathaka - kodwa ibeka emngciphekweni wokungazinzi komphetho kunye nentamo{2}}ngaphakathi.
Ukuphola roll ukugqiba.I-matte chill roll idlulisela uburhabaxa kwindawo yokugquma, engachaphazeli ukomelela kwebhondi kodwa ichaphazela ushicilelo olusezantsi kunye nokusebenza kokunyibilika.
| ISubstrate | Dyne ekujoliswe kuyo | Ubuninzi beWatt (W/cm²/min) | Umngcipheko ophambili |
|---|---|---|---|
| Ifilimu ye-LDPE | 38–42 | 6–10 | Unyango ngasemva |
| Ifilimu yeLLDPE | 38–42 | 8–12 | Ukuguga ngaphambi kokulala |
| I-BOPP | 38–40 | 5–8 | Ukutyibilika kokongeza umfuduko |
| I-PET | 45–48 | 3–6 | Ngaphezulu{0}}unyango, umgubo |
| Ifoyile yeAluminiyam | 42–46 | 6–12 | Roll umthwalo we-thermal |
| Iphepha / ibhodi | 40–44 | 4–8 | Ukufuma kwisithuba |
| Ifilimu eyenziwe ngesinyithi | 44–50 | 3–5 | Umonakalo kumaleko esinyithi |
Ukulinganisa kunye nokuQinisekisa i-Extrusion Coating Adhesion
Udinga iinkqubo ezimbini zokulinganisa: enye yeyomphezulu, enye yebhondi.
Kumphezulu, iipeni ze-dyne okanye ii-inki zovavanyo zinika ukuhamba ngokukhawuleza/akukho{0}}hamba ufunde. Zisebenzise kwiziko kunye nemiphetho yomibini, ngokukhawuleza emva konyango kwaye kwakhona ngaphambi nje kwe-nip ukuba indlela inde. Rekhoda amaxabiso; umkhwa wokukhukuliseka ukuxelela ukuba i-electrode okanye i-dielectric ifuna ukuhoywa.
Kwibhondi, sebenzisa T-uvavanyo lwe-peel kwisampulu enyangisiweyo. Ngokukhawuleza emva kokugquma kwe-extrusion, ukunamathela kusaphuhliswa, ngoko ke uvavanyo oluthatyathwe ngqo kumgca lugqithise okanye luthoba ixabiso lokugqibela ngokuxhomekeke kwipolymer. Ukuziqhelanisa okusemgangathweni kukumisela iisampulu kwiiyure ezingama-24 phambi kovavanyo.
Landela ukomelela kwe-peel ngokuchasene namanqaku abekwe kwi-log elula. Xa i-extrusion adhesion adhesion drifts ikhukuliseka, ilog ikuxelela ukuba unyango, i-substrate lot okanye isantya somgca sitshintshile, kwaye oko kunciphisa ixesha lokuxilongwa ngokumangalisayo.
Iimpazamo eziqhelekileyo ezonakalisa i-Extrusion Coating Adhesion
- Ukunyanga ukude kakhulu komlambo.Indlela ende phakathi konyango kunye nokufa yenza ukuba umphezulu ukhululeke. Sondeza isitishi kufutshane okanye unyuse ingxinano ye-watt ukuze ubuyekeze, kodwa sukuvele wamkele ilahleko.
- Ngaphezulu{0}}kunyango.Amandla e-Cranking ukuze "akhuseleke" enza umaleko obuthathaka we-oxidised debris kunye nokunciphisa ukunamathela kwi-extrusion. Okunye akukho ngcono.
- Uvavanyo kumbindi wewebhu kuphela.Ukubambelela komda kuyasilela kuqala kwaye kubonisa ukunxiba kwe-electrode okanye i-dielectric.
- Ukungahoyi ukufuma.Ukufuma okuphezulu kwe-ambient kucinezela ukukhutshwa kwaye kungenise amanzi kwisithuba. Iseti yamaxesha onyaka{1}}uhlengahlengiso lwamanqaku luqhelekile kwizityalo zetropikhi.
- Ukusebenzisa isigqubuthelo somqulu esingalunganga.Isilicone {{0}iroli egqunyiweyo ebaleka kuxinaniso lwe-watt ephezulu iphuhlisa iingoma zokuqhuba kwaye inikezela ngonyango olungalinganiyo, ngoko ke ukuncamathela kwe-extrusion kuyahluka kububanzi.
- Ukungajongi ireferensi engaphathwanga.Ngalo lonke ixesha gcina isampulu yolawulo lwesubstrate efanayo ngaphandle konyango ukuqinisekisa ukuba umnyangi ngokwenene uyawenza umsebenzi.
FAQ
I-Q1: Leliphi inqanaba le-dyne endilidingayo ukuze ndibambelele kakuhle kwi-extrusion?
Kwi-polyolefin substrates, jolise kwi-38 ukuya kwi-42 dynes ngesentimitha kwindawo ye-nip, hayi kwindawo yokuphuma yonyango. Kwi-PET kunye ne-foil, i-45 dynes yinto ekujoliswe kuyo ekhululekile. Hlala uqinisekisa ngovavanyo lwe-peel, ekubeni inqanaba le-dyne liyi-proxy, kungekhona injongo.
I-Q2: Ngaba ndingafumana ukuncamathela okuqinileyo kwe-extrusion ngaphandle konyango lwe-corona?
Kuphela ngama-substrates asele ephethe i-polar chemistry, efana namanye amaphepha agqunyiweyo okanye-iifilim zangaphambili. Kwiipololefins ezingalungiswanga, iindawo ezingalungiswanga azinakumanziswa ngokuthembekileyo ngokunyibilika, kwaye ukuncamathela kuya kusilela phantsi kwalo naluphi na uhlobo loxinzelelo lomatshini okanye lobushushu.
I-Q3: Unyango lukhawuleza kangakanani ukubola ngaphambi kokutyabeka kwe-extrusion?
Ukubola kuxhomekeke kwiqondo lokushisa, ukufuma kunye ne-substrate. Kwiimeko ezipholileyo, ezomileyo iwebhu ephathwayo inokubamba uninzi lwenqanaba le-dyne yayo kangangeentsuku. Kumgca wokugquma oshushu, ofumileyo we-extrusion ilahleko kwimizuzwana embalwa yokuhamba inokuba zii-dynes ezininzi, ngoko ke gcina indlela yonyango imfutshane.
I-Q4: Ngaba isantya esiphezulu somgca silimaza i-extrusion coating adhesion?
Akunjalo ukuba ingxinano ye-watt ibanjwe rhoqo. Isantya sinciphisa ixesha lokuhlala ekukhupheni, ke kuya kufuneka wandise amandla ngokulinganayo. Apho umcoci ekusilingi yamandla akhe, isantya siba sisinyanzelo esibophelelayo kwaye kufuneka uthobe isantya okanye wamkele unyango olusezantsi.
I-Q5: Kutheni i-extrusion coating adhesion ihluka ukusuka kumqulu ukuya kumqulu?
Oonobangela abaxhaphakileyo kukuhluka kwe-substrate, utshintsho kwi-anti{0}}ibhloko okanye i-slip additive loading, ukukhukuliseka kwisithuba se-electrode, ukunxitywa kwe-dielectric, kunye nokufuma kwe-ambient. I-Log peel iziphumo ngokuchasene nenani leqashiso le-substrate ukwahlula umthombo.
I-Q6: Ngaba i-ozone iyingozi kwi-extrusion coating adhesion?
I-Ozone ngokwayo ayiyingozi kwibhondi, kodwa i-ozone engalawulwayo ibonisa ukutsalwa okungahambelaniyo, okutshintsha umoya we-gap kwaye ngoko ke ukukhutshwa. I-ozone ephezulu iphinda idle iintsimbi ezikufutshane kunye nezigqubuthelo zerabha zeminyaka.
I-Q7: Ngaba ndifanele ndiphathe amacala omabini e-substrate?
Phatha icala elifumana isambatho. Ukunyanga macala omabini ngamanye amaxesha kusetyenziselwa ukulawula i-curl okanye ukulungiselela ubuso obungasemva kwinkqubo elandelayo, kodwa iphinda kabini umthwalo we-thermal kwaye yandisa umngcipheko wokuthintela kwi-unwind.
Ukuqukumbela
I-Extrusion coating adhesion sisiphumo senkqubo, kungekhona ipropathi yezinto eziphathekayo, kwaye izicwangciso zonyango zizona zixhobo ezinkulu ozilawulayo. Seta ubuninzi be-watt ukusuka kwi-substrate kunye nesantya somgca, qinisekisa ngovavanyo lwe-peel kwiisampulu ezisemgangathweni, gcina indlela ephathwayo imfutshane, kunye neziphumo zelogi ukuze i-drift ibonakale kwangoko.
I-Shenzhen Hefeng Jiada Technology ibonelela ngabanyangi be-corona, oomatshini bonyango lwe-plasma kunye nezixhobo zokucoca iwebhu ezenzelwe ukugquma i-extrusion kunye nemigca yokulanywa. Yabelana nge-substrate yakho, ububanzi bomgca, isantya kunye namandla ekujoliswe kuwo, kwaye iinjineli zethu ziya kubukhulu besikhululo sonyango kwaye sicebise useto olubambe i-extrusion coating adhesion run emva kokubaleka.