Takaitaccen Bayani: Wannan takarda tana nazarin matsalar farin maki na fina-finan haɗakar PET/VMCPP da PET/VMPET/PE lokacin da aka haɗa su, kuma tana gabatar da mafita masu dacewa.
Fim ɗin haɗin aluminum mai rufi abu ne mai laushi wanda ke da "luster na aluminum" wanda aka samar ta hanyar haɗa fina-finan da aka rufe da aluminum (galibi VMPET/VMBOPP, VMCPP/VMPE, da sauransu, waɗanda daga cikinsu VMPET da VMCPP sune aka fi amfani da su) tare da fina-finan filastik masu haske. Ana amfani da shi ga marufi na abinci, kayayyakin lafiya, kayan kwalliya, da sauran kayayyaki. Saboda kyawun hasken ƙarfe, sauƙin amfani, araha, da kuma kyakkyawan aikin shinge, an yi amfani da shi sosai (ingantattun halayen shinge fiye da fina-finan haɗin filastik, mafi arha kuma mafi sauƙi fiye da fina-finan haɗin aluminum-roba). Duk da haka, fararen tabo galibi suna faruwa yayin samar da fina-finan haɗin aluminum. Wannan ya bayyana musamman a cikin samfuran haɗin aluminum tare da tsarin PET/VMCPP da PET/VMPET/PE.
1. Dalilai da hanyoyin magance "farin spots"
Bayanin abin da ya faru na "farin tabo": Akwai alamun fari a bayyane a bayyanar fim ɗin, waɗanda za a iya rarraba su bazuwar kuma girmansu iri ɗaya ne. Musamman ga fina-finan da ba a buga ba da kuma fina-finan farin tawada mai cikakken farantin ko fina-finan tawada masu launin haske, ya fi bayyana.
1.1 Rashin isasshen ƙarfin fuska a gefen farantin aluminum na murfin aluminum.
Gabaɗaya, ya kamata a yi gwajin matsin lamba a saman fim ɗin da aka yi amfani da shi kafin a haɗa shi, amma wani lokacin ana yin watsi da gwajin murfin aluminum. Musamman ga fina-finan VMCPP, saboda yuwuwar hazo na ƙananan ƙarin ƙwayoyin cuta a cikin fim ɗin tushen CPP, saman aluminum da aka lulluɓe na fina-finan VMCPP da aka adana na tsawon lokaci yana da saurin rashin isasshen matsin lamba.
1.2 Rashin daidaiton mannewa
Mannaye masu tushen ƙarfi ya kamata su zaɓi mafi kyawun yawan maganin aiki bisa ga littafin jagorar samfur don tabbatar da daidaiton manne mafi kyau. Kuma ya kamata a aiwatar da sarrafa gwajin danko yayin ci gaba da tsarin haɗakar samarwa. Lokacin da danko ya ƙaru sosai, ya kamata a ƙara man shafawa nan da nan. Kamfanoni masu yanayi za su iya zaɓar kayan aikin manne na famfo mai atomatik da aka haɗa. Ya kamata a zaɓi mafi kyawun zafin jiki na dumama don manne marasa mai da ƙarfi bisa ga littafin jagorar samfur. Bugu da ƙari, idan aka yi la'akari da batun lokacin kunnawa ba tare da mai da ƙarfi ba, bayan dogon lokaci, ya kamata a fitar da manne a cikin abin da ke cikin na'urar aunawa cikin lokaci.
1.3 Rashin kyawun tsari mai haɗaka
Ga tsarin PET/VMCPP, saboda ƙaramin kauri da sauƙin faɗaɗa fim ɗin VMCPP, matsin lambar lamination bai kamata ya yi yawa ba yayin lamination, kuma ƙarfin lamination bai kamata ya yi yawa ba. Duk da haka, lokacin da tsarin PET/VMCPP ya haɗu, saboda gaskiyar cewa fim ɗin PET fim ne mai tauri, yana da kyau a ƙara matsin lambar laminating da tashin hankali mai laminating yadda ya kamata yayin lamination.
Ya kamata a tsara sigogin tsarin haɗin gwiwa masu dacewa bisa ga yanayin kayan aikin haɗin gwiwa lokacin da tsarin rufin aluminum daban-daban suka haɗu.
1.4 Abubuwan ƙasashen waje da ke shiga cikin fim ɗin haɗin gwiwa suna haifar da "fari"
Abubuwan waje galibi sun haɗa da ƙura, barbashi na roba, ko tarkace. Ƙura da tarkace galibi suna fitowa ne daga wurin aiki, kuma suna iya faruwa ne lokacin da tsaftar wurin aiki ba ta da kyau. Barbashi na roba galibi suna fitowa ne daga faifan roba, na'urorin rufewa, ko na'urorin ɗaurewa. Idan wurin haɗin ba wurin aiki ne mai ƙura ba, ya kamata ya kuma yi ƙoƙarin tabbatar da tsafta da tsaftar wurin aikin haɗin, shigar da kayan aikin cire ƙura ko tacewa (na'urar shafa, na'urar naɗa jagora, na'urar haɗawa da sauran kayan aiki) don tsaftacewa. Musamman na'urar rufewa, naɗawa, naɗawa mai lanƙwasa, da sauransu ya kamata a riƙa tsaftace su akai-akai.
1.5 Yawan zafi a cikin wurin samar da kayayyaki yana haifar da "fari"
Musamman a lokacin damina, lokacin da danshi na wurin aiki ya kai ≥ 80%, fim ɗin haɗin ya fi saurin kamuwa da "fari". Sanya na'urar auna zafin jiki da danshi a cikin wurin aikin don yin rikodin canje-canje a yanayin zafi da danshi, da kuma ƙididdige yiwuwar fararen tabo su bayyana. Kamfanoni masu yanayi na iya la'akari da shigar da kayan aikin cire danshi. Ga tsarin haɗin gwiwa mai layuka da yawa tare da kyawawan halayen shinge, ya zama dole a yi la'akari da dakatar da samarwa ko samar da tsarin haɗin gwiwa mai layuka ɗaya ko mai katsewa. Bugu da ƙari, yayin da ake tabbatar da aikin manne na yau da kullun, ana ba da shawarar a rage adadin maganin warkarwa da aka yi amfani da shi yadda ya kamata, yawanci da kashi 5%.
1.6 Fuskar mannewa
Idan ba a sami wata matsala ba kuma ba za a iya magance matsalar "farin tabo" ba, za a iya la'akari da tsarin shafa shafi a gefen murfin aluminum. Amma wannan tsari yana da iyaka mai yawa.Musamman ma lokacin da murfin aluminum na VMCPP ko VMPET ya fuskanci zafi da tashin hankali a cikin tanda, yana iya haifar da lalacewar tururi, kuma ana buƙatar daidaita tsarin haɗin. Bugu da ƙari, ƙarfin barewa na layin aluminum na iya raguwa.
1.7 Bayani na musamman game da yanayin da ba a sami wata matsala ba bayan rufewa, amma "farin ɗigo" sun bayyana bayan balaga:
Irin wannan matsala tana iya faruwa a cikin tsarin membrane mai haɗaka tare da kyawawan halayen shinge. Ga tsarin PET/VMCPP da PET/VMPET/PE, idan tsarin membrane ya yi kauri, ko lokacin amfani da fina-finan KBOPP ko KPET, yana da sauƙi a samar da "fari" bayan tsufa.
Fina-finan haɗakar shinge masu ƙarfi na wasu gine-gine suma suna fuskantar irin wannan matsala. Misalan sun haɗa da amfani da kauri foil ɗin aluminum ko siririn fim kamar KNY.
Babban dalilin wannan "farin tabo" shine akwai ɗigon iskar gas a cikin membrane ɗin da aka haɗa. Wannan iskar gas ɗin na iya zama yawan ruwan da ke cikin sauran sinadarai ko kuma yawan iskar carbon dioxide da aka samar ta hanyar amsawar da ke tsakanin sinadarin da ke wargazawa da tururin ruwa. Bayan iskar gas ɗin ta cika, saboda kyawawan halayen shinge na fim ɗin da aka haɗa, ba za a iya fitar da shi ba, wanda ke haifar da bayyanar "farin tabo" (kumfa) a cikin Layer ɗin da aka haɗa.
Magani: Lokacin haɗa manne bisa ga narkakken ruwa, ya kamata a saita sigogin tsari kamar zafin tanda, ƙarar iska, da matsin lamba mara kyau sosai don tabbatar da cewa babu sauran mai narkewa a cikin layin manne. Kula da danshi a cikin wurin aiki kuma zaɓi tsarin rufe manne. Yi la'akari da amfani da maganin warkarwa wanda baya samar da kumfa. Bugu da ƙari, lokacin amfani da manne bisa ga narkakken ruwa, ya zama dole a gwada adadin danshi a cikin narkakken ruwa, tare da buƙatar adadin danshi ≤ 0.03%.
Abin da ke sama gabatarwa ne ga abin da ya faru na "farin tabo" a cikin fina-finan haɗaka, amma akwai dalilai daban-daban da za su iya haifar da irin waɗannan matsaloli a cikin ainihin samarwa, kuma ya zama dole a yi hukunci da ingantawa bisa ga ainihin yanayin samarwa.
Lokacin Saƙo: Disamba-11-2023