Abstract: Wannan takarda tana nazarin matsalar farin batu na fina-finai masu haɗaka na PET/VMCPP da PET/VMPET/PE lokacin da aka haɗa su, kuma yana gabatar da mafita masu dacewa.
Fim ɗin da aka haɗa da Aluminum shine kayan marufi mai laushi tare da "luster aluminum" da aka kafa ta hanyar haɗar fina-finai na aluminum (yawanci VMPET / VMBOPP, VMCPP / VMPE, da dai sauransu, daga cikinsu VMPET da VMCPP sune aka fi amfani da su) tare da fina-finai na filastik m.An shafi marufi na abinci, kayayyakin kiwon lafiya, kayan shafawa, da sauran kayayyakin.Due da kyau kwarai karfe luster, saukaka, araha, da kuma in mun gwada da kyau shãmaki yi, shi da aka yadu amfani (mafi kyau shãmaki Properties fiye da filastik hada fina-finai, mai rahusa da kuma ya fi sauƙi fiye da fina-finai na aluminum-plastic composite films).Duk da haka, fararen fata yakan faru a lokacin samar da fina-finai na aluminum plated.Wannan yana bayyana musamman a samfuran fim ɗin da aka haɗa tare da tsarin PET/VMCPP da PET/VMPET/PE.
1. Dalilai da mafita na "fararen fata"
Bayanin al'amarin "fararen tabo": Akwai fararen fata a bayyane akan bayyanar fim ɗin da aka haɗa, wanda za'a iya rarrabawa ba tare da izini ba da kuma girman nau'i.Musamman ga fina-finan da ba a buga ba da cikakken farantin faranti ko fina-finai na tawada mai haske, ya fi fitowa fili.
1.1 Rashin isassun tashin hankali na saman a kan gefen aluminum plating na aluminum shafi.
Gabaɗaya, yakamata a gudanar da gwajin tashin hankali a saman filin corona da aka yi amfani da shi kafin haɗawa, amma wani lokaci ana yin watsi da gwajin murfin aluminum.Musamman ga fina-finai na VMCPP, saboda yiwuwar hazo na ƙananan ƙwayoyin ƙwayoyin cuta a cikin fim din CPP na asali, aluminium plated surface na fina-finai na VMCPP da aka adana na wani lokaci yana da wuyar rashin isasshen tashin hankali.
1.2 Rashin daidaituwar mannewa
Ya kamata adhesives tushen ƙarfi ya zaɓi mafi kyawun maida hankali na aikin aiki bisa ga jagorar samfurin don tabbatar da ingantaccen matakin manne.Kuma ya kamata a aiwatar da sarrafa gwajin danko yayin ci gaba da samar da hadadden tsari.Lokacin da danko ya karu sosai, ya kamata a kara masu kaushi nan da nan.Kamfanoni masu sharuɗɗa na iya zaɓar ruɓaɓɓen kayan aikin manne famfo.Ya kamata a zaɓi mafi kyawun zafin jiki na dumama don adhesives marasa ƙarfi bisa ga littafin samfurin.Bugu da ƙari, la'akari da batun lokacin kunnawa ba tare da ƙarfi ba, bayan lokaci mai tsawo, manne a cikin abin nadi ya kamata a saki a cikin lokaci.
1.3Tsarin haɗaɗɗiyar rashin ƙarfi
Don tsarin PET/VMCPP, saboda ƙananan kauri da sauƙi mai sauƙi na fim ɗin VMCPP, matsa lamba na abin nadi bai kamata ya yi girma ba yayin lamination, kuma tashin hankali bai kamata ya yi girma ba.Koyaya, lokacin da tsarin PET/VMCPP ya haɗa, saboda gaskiyar cewa fim ɗin PET fim ne mai tsauri, yana da kyau a ƙara matsa lamba na abin nadi da jujjuya tashin hankali daidai lokacin haɗawa.
Ya kamata a tsara ma'auni masu dacewa masu dacewa bisa ga halin da ake ciki na kayan aiki na kayan aiki lokacin da sassa daban-daban na aluminum suna haɗuwa.
1.4 Abubuwan da ke shiga cikin fim ɗin da aka haɗa suna haifar da "fararen fata"
Abubuwan waje sun haɗa da ƙura, barbashi na roba, ko tarkace.Kura da tarkace galibi suna fitowa ne daga taron bitar, kuma suna iya faruwa idan tsaftar bitar ba ta da kyau.Barbashi na roba galibi suna fitowa ne daga fayafai na roba, masu ruɓi, ko naɗaɗɗen na'urorin haɗi.Idan masana'anta ba bitar da ba ta da ƙura ba, ya kamata kuma ta yi ƙoƙarin tabbatar da tsafta da tsabtar taron bitar, shigar da cire ƙura ko kayan aikin tacewa (na'urar sutura, nadi jagora, na'urar haɗin gwiwa da sauran abubuwan da aka gyara) don tsaftacewa.Musamman ma abin nadi, scraper, nadi mai laushi, da dai sauransu yakamata a tsaftace su akai-akai.
1.5 Babban zafi a cikin bitar samarwa yana haifar da "fararen fata"
Musamman a lokacin damina, lokacin da zafi na bitar ya kasance ≥ 80%, fim ɗin da aka haɗa ya fi dacewa da yanayin "fararen fata".Sanya ma'aunin zafi da zafi a cikin bitar don yin rikodin canje-canje a yanayin zafi da zafi, da ƙididdige yuwuwar bayyanar fararen tabo.Kamfanoni masu sharuɗɗa na iya yin la'akari da shigar da kayan aikin dehumidification.Don sifofin haɗaɗɗun nau'i-nau'i masu yawa tare da kyawawan kaddarorin shinge, ya zama dole a yi la'akari da dakatar da samarwa ko samar da nau'i-nau'i masu yawa ko tsaka-tsaki.Bugu da ƙari, yayin tabbatar da aikin al'ada na mannewa, ana bada shawara don rage yawan adadin maganin da aka yi amfani da shi daidai, yawanci ta 5%.
1.6 Gluing surface
Lokacin da ba a sami wasu abubuwan da ba a sani ba kuma ba za a iya magance matsalar "fararen fata" ba, za a iya la'akari da tsarin sutura a gefen gefen aluminum.Amma wannan tsari yana da iyakacin iyaka.Musamman lokacin da VMCPP ko VMPET aluminium shafi ke ƙarƙashin zafi da tashin hankali a cikin tanda, yana da sauƙi ga nakasawa, kuma tsarin haɗin gwiwar yana buƙatar daidaitawa.Bugu da ƙari, ƙarfin kwasfa na Layer plating aluminum na iya raguwa.
1.7 Bayani na musamman game da yanayin da ba a sami matsala ba bayan rufewa, amma "fararen aibobi" sun bayyana bayan balaga:
Irin wannan matsala yana da wuyar faruwa a cikin tsarin membrane mai hade tare da kyawawan kaddarorin shinge.Don tsarin PET / VMCPP da PET / VMPET / PE, idan tsarin membrane yana da kauri, ko lokacin amfani da fina-finai na KBOPP ko KPET, yana da sauƙi don samar da "fararen fata" bayan tsufa.
Babban shamaki hada fina-finai na wasu sifofi suma suna da saurin kamuwa da wannan matsala.Misalai sun haɗa da yin amfani da foil na aluminum mai kauri ko siraren fina-finai kamar KNY.
Babban dalilin wannan al'amari na "fararen tabo" shi ne cewa akwai kwararar iskar gas a cikin membrane mai hade.Wannan iskar na iya zama cikar sauran abubuwan kaushi ko ambaliya ta iskar iskar carbon dioxide da aka haifar ta hanyar amsawa tsakanin wakili mai warkarwa da tururin ruwa.Bayan da iskar gas ta cika, saboda kyawawan kaddarorin shinge na fim ɗin da aka haɗa, ba za a iya fitar da shi ba, wanda ya haifar da bayyanar "farar fata" (kumfa) a cikin haɗin gwaninta.
Magani: Lokacin da ake haɗa sauran ƙarfi bisa manne, sigogin tsari kamar zafin tanda, ƙarar iska, da matsa lamba mara kyau yakamata a saita su da kyau don tabbatar da cewa babu sauran sauran ƙarfi a cikin manne.Sarrafa zafi a cikin bitar kuma zaɓi tsarin sutura mai rufaffiyar.Yi la'akari da yin amfani da wakili mai warkarwa wanda baya haifar da kumfa.Bugu da ƙari, lokacin amfani da adhesives na tushen ƙarfi, wajibi ne don gwada abun ciki na danshi a cikin ƙaura, tare da buƙatar abun ciki na danshi ≤ 0.03%.
Abin da ke sama gabatarwa ne ga al'amuran "fararen fata" a cikin fina-finai masu haɗaka, amma akwai dalilai daban-daban da za su iya haifar da irin wannan matsala a cikin ainihin samarwa, kuma wajibi ne a yanke hukunci da ingantawa bisa ga ainihin yanayin samarwa.
Lokacin aikawa: Dec-11-2023