Jakar marufi na mayar da martanitare da tsarin BOPA // LDPE ana amfani dashi ko'ina a cikin marufi na pickles da bamboo harbe.BOPA// LDPE Boiled jakunkuna a zahiri suna da manyan buƙatun ƙididdiga na fasaha.Ko da yake wani ma'auni na kamfanoni masu laushi na iya yin buhunan dafaffen, ingancin kuma ba daidai ba ne, kuma wasu za su sami ƙarin inganci.tambaya.Anan, wannan takarda tana nazarin mahimman abubuwan da ke cikin tsarin samar da buhunan buhunan BOPA// LDPE.
A. Zaɓin kayan aiki
1. Zaɓin fim ɗin BOPA
①Al'amarin baka na fim din nailan
Ana iya samar da fim ɗin BOPA ta hanyar shimfida fim ɗin tubular ko ta hanyar shimfida biaxial na jirgin sama.Fina-finan nailan masu daidaitawa na Biaxially waɗanda aka samar ta hanyoyi daban-daban suna da tasirin baka daban-daban, waɗanda ke da tasiri mai mahimmanci akan daidaiton fim ɗin da aka wuce gona da iri da lallausan jakar marufi (ciki har da bayyanar saman jakar kafin da bayan tafasa).
Hanya ta musamman don gano tasirin ruku'u na fim ɗin nailan shine auna ma'aunin zafi na diagonal.Hakanan zamu iya gwada ƙimar ƙarancin zafi na fim ɗin nailan bisa ga ainihin yanayin amfani da jakar da aka dafa (kamar 100 ℃, 30min).Ƙananan bambance-bambance tsakanin ƙimar rage zafi na diagonal, mafi kyawun ma'auni na samfurin;1.5%, ba za a sami kusurwar warping yayin yin jaka ba.
② Kasuwa iri-iri
BOPA fim ya kasu kashi biyu iri: bugu sa da kuma composite sa.Za a iya amfani da matakin bugu don bugu da hanyoyin haɗin kai.Ana ba da shawarar ƙima mai haɗaka kawai don hanyoyin haɗin gwiwar da ba sa buƙatar bugu.A kauri ne kullum 12μm, 15μm, 25μm biyu bayani dalla-dalla.15μm don m marufi hada fim, 25μm ga sanyi-kafa aluminum Pharmaceutical marufi.Dole ne a yi amfani da fim ɗin corona mai gefe biyu lokacin da aka yi amfani da shi don lamination interlayer da kuma tafasa da dafa abinci.
③Maɓalli ingancin buƙatun fim ɗin BOPA
a.Idan abin da ake buƙata na flatness yana da girma, ya kamata a zaɓi fim ɗin da aka shimfiɗa tare da ƙaramin tasirin baka.
b.Matsakaicin saman fim ɗin shine ≥50mN / m don tabbatar da saurin mannewa na tawada.Ƙimar sarrafawa ba ta fi girma ba.
c.Zaɓi fim ɗin tare da dacewa mai kyau zuwa yanayin zafi don tabbatar da daidaiton bugu.
d.Zaɓi nau'in fim ɗin tare da ƙaramin ƙarancin zafi na zafi (yawan rage zafin rigar).
2. Selection na zafi sealing Layer PE
Bambanci tsakanin Boiled jakar PE da talakawa PE: ① mafi zafi sealing ƙarfi;② mai kyau zafi sealability na inclusions;→ Tsayayyen zafi mai inganci;⑤ Kyakkyawan nuna gaskiya, babu bayyanannun raƙuman ruwa;⑥ Babu idanun kifaye, ƙazanta, wuraren kristal waɗanda ke shafar amfani → bayyanar kumfa, ko ma huda fim ɗin PA → Ayyukan shamaki ya ragu, ko mai ya bayyana sabon abu.Halayen inganci guda uku na farko an ƙaddara su ta hanyar ƙirar pellet na kowane Layer na fim ɗin PE yayin gyare-gyaren busa.
3. Zaɓin tawada bugu
Ana amfani da tawada na musamman na polyurethane don buga fim ɗin nailan: ①-free Benzene da ketone-free jerin;②-Babu Benzene da jerin ketone.
Lokacin zabar tawada bugu, kula da:
Zaɓin juriya na samfuran launi, kamar F1200 ja, 1500 ja, F1150 ja, F2610 ja na zinari, F3700 orange, F4700 matsakaici rawaya da sauran tawada masu launi na tawada polyurethane, an nuna a cikin jagorar cewa ba za a iya amfani da shi don BOPA ba. /PE Structural Boiled film printing, wasu launuka ba su da juriya ga dafaffen, kuma kayan launi yana da sauƙin fitowa lokacin da aka tafasa ruwa.
②Ya kamata a yi amfani da tawada na zinariya da azurfa tare da taka tsantsan.Don tawada na zinariya da azurfa, masana'antar tawada ba ta ba da shawarar yin amfani da shi don dalilai na tafasa a cikin umarnin ba, amma wasu buhunan buhunan buhunan dafaffen a kasuwa suna amfani da launin zinari da azurfa.Babban aikin shine tuntuɓar masana'antar tawada don ƙirar ƙira kafin aikace-aikacen, haka kuma Yi hankali kada a buga cikin manyan tubalan launi.
③ Fim ɗin nailan dole ne ya kasance yana da saurin mannewa tawada mai kyau, don tabbatar da ƙarfin bawo na ƙarshe na ɓangaren tawada.
4. Zaɓin m
Zaɓi manne wanda zai iya jure tafasasshen ruwa, kuma tabbatar da matakin haɗin giciye da warkewa bayan haɗawa.Bugu da kari, ya kamata a yi amfani da tsoho gam da taka tsantsan (ya kamata a guji gabaɗaya), saboda ingantaccen rabo na babban wakili da ƙungiyar masu warkarwa a cikin maganin manne bai daidaita ba yayin aiwatar da tsarin sanya tsofaffin manne, da mannen. Layer yana da saurin bushewa sabon abu.
5. Bukatun inganci don ethyl acetate
Ruwa da barasa a cikin ethyl acetate (ba kawai ethanol ba, har ma da abun ciki na methanol da isopropanol ya kamata a sarrafa su) za su amsa tare da wakili mai warkarwa a cikin manne, kuma za a cinye wakili mai warkarwa, wanda ya haifar da sabon abu cewa manne Layer. baya bushewa.Daya daga cikin manyan dalilai na wrinkling na roba Layer na jakar.
B. Tsarin bugu na Gravure
1. Zaɓin takamaiman samfurin tawada
Ana samar da shi bisa ga nau'in tawada da aka ƙayyade ta tsari.Misali, wasu tawada na wasu launuka ba su dace da bugu na BOPA//PE ba.
2. Lokacin da aka sake amfani da tsohon tawada, wajibi ne a ƙara fiye da 50% sabon tawada, kuma ba za a yi amfani da tawada mai lalacewa ba.
3. Lokacin da ya cancanta, ana iya ƙara wani nau'i na wakili na warkewa zuwa farin tawada
Akwai dalilai guda biyu na ƙara wani kaso na wakili mai warkarwa zuwa farin tawada: ɗaya shine inganta juriyar zafin tawada;ɗayan kuma shine a rage yawan amfani da magungunan da ƙungiyoyin resin a cikin tawada suke amfani da su kuma su guje wa rashin kammala waraka na manne a lokacin rani.
Hanyar ƙara: Da farko a tsoma shi da sauran ƙarfi, sa'an nan kuma ƙara shi a cikin tawada yayin da ake motsawa a hankali har sai ya gauraye.
Hanyar da ba daidai ba: kai tsaye ƙara wakili mai warkarwa a cikin tawada, ko ƙara shi a cikin tire na tawada, wanda ba zai haɗu daidai ba, amma ba zai cimma tasirin ƙara mai warkarwa ba.
Bugu da kari, kula da lokaci: lokaci na gabaɗaya yana da awanni 12, kuma wakili na warkar da tawada na dare ya ƙare, ko kuma a sake ƙara wani adadin magani.
4. Gudanar da ƙarancin danshi na membrane nailan
Nylon yana shayar da danshi, kuma yana da sauƙi ga ruffles, gefuna masu tsalle-tsalle, ratsi, launi mai wuyar gaske, da rajistar launi mara kyau yayin bugawa.
Lokacin bugawa, ya fi dacewa don sarrafa yanayin zafi da zafi na taron samar da kayayyaki.Lokacin da zafi na bitar samarwa ya wuce 80%, fim ɗin nailan yana da sauƙi don ɗaukar danshi da tashi, yana haifar da jerin matsalolin ingancin samfuran bugu.
Musamman, kula da abubuwa masu zuwa: ① Kar a buɗe kunshin da wuri kafin amfani.② Yi ƙoƙarin amfani da shi a lokaci ɗaya, kuma kunsa sauran fim ɗin tare da wani abu mai kyau na shinge.③ Lokacin bugawa, rukunin launi na farko baya kan abin nadi na farantin, kuma an riga an bushe shi.④ Tabbatar da madaidaicin zafin jiki (25 ℃ ± 2 ℃) da zafi (≤80% RH) a cikin aikin samarwa.⑤ Fim ɗin nailan da aka buga ya kamata a cika shi da fim ɗin da ba zai yuwu ba.
C. Bushewar tsari mai hadewa
1. Zaɓin adadin manne
Matsakaicin adadin adadin gluing: 2.8 ~ 3.2gsm, adadin gluing da yawa ba shi da ma'ana akan ƙarfin peeling, amma yana ƙaruwa nauyin bushewa.Don kayan aiki masu haɗaka tare da ƙarancin bushewa, zai ƙara yuwuwar delamination da karya jakar bayan dafa abinci.
Lokacin gano adadin manne, kula da hankali na musamman ga canjin abun ciki na ruwa kafin da kuma bayan fim ɗin nailan ya wuce ramin bushewa, wanda ke shafar daidaiton gano adadin manne!
Lokacin da muka samar da buhunan busassun, ya kamata mu ba kawai kallon adadin manne ba, amma kuma kula da daidaituwar microscopic na suturar m.Ma'auni na abin nadi na raga za su yi tasiri kai tsaye daidaitaccen daidaituwar suturar mannewa.
2. Bukatun danshi na ethyl acetate
Rashin ingancin ingancin ethyl acetate (kamar yawan danshi da barasa) sau da yawa yana haifar da lalacewar ingancin hatsarori na membranes.
Abubuwan da ke cikin barasa a cikin ethyl acetate sau da yawa baya jawo hankalin mafi yawan masana'antun marufi.Bayanan gwajin ethyl ester (mai narkewar ganga) na masana'antar marufi mai sassauƙa ya gano cewa samfuri mai inganci ɗaya ne kawai da samfuran aji biyu na farko cikin batches 14.Ingancin ba shi da kyau, kuma masana'antar fakiti mai laushi yakamata ya kula.
3. Tabbatar cewa manne ya bushe sosai
Mu yawanci kawai kula da adadin mahadi manne.A haƙiƙa, rashin isasshen bushewa sau da yawa shine dalilin da ya fi kai tsaye na rashin cikakkiyar warkewar abin da ake amfani da shi (rashin juriyar yanayin zafi na manne), delamination da wrinkling na marufi lokacin da aka tafasa shi.Akwai ƙaramin adadin ruwa da ƙazantattun barasa a cikin manne da aka shirya.Kyakkyawan bushewa na iya sa danshi da sauran ƙazanta a cikin mannen manne su yi rauni gwargwadon yuwuwar, kuma ya rage yawan amfani da wakili mai warkarwa a cikin mannen manne.Don tabbatar da cewa mannen ya bushe sosai a lokacin bushewa, kula da waɗannan abubuwan:
(1) Ayyukan bushewa na kayan aiki da kansu, irin su shan iska da ƙarar kayan aiki, da tsawon tanda.
(2) Saitin yanayin bushewa.
① Saitin zafin jiki na bushewa a yankin farko.Matsakaicin ethyl ester na matsakaicin bushewa a yankin farko shine mafi girma, don haka zafin bushewar yankin farko ba za a iya saita shi da yawa ba (gaba ɗaya bai wuce 65 ° C ba).Saboda yawan zafin jiki ya yi yawa, ƙauyen da ke kan saman maɗauran mannewa yana canzawa da sauri kuma fatar jiki ta hana tserewa daga cikin abubuwan da ke ciki a cikin ɓangaren bushewa na wurare na ƙarshe.
②Saitin gradient zafin jiki bushewa.Ya kamata a saita zafin jiki na tanda bisa ga ka'idar karuwa a hankali a hankali, maƙasudin shine don hanzarta yadawa da kuma daidaitawa na ƙwanƙwasa mai laushi a cikin yanki na hardening da yankin ware wari, da kuma rage ragowar ƙarfi a cikin fim din.
(3) Daidaita yawan sha da shayewar iska.
①A cikin yankin evaporation na tsarin bushewa, dole ne a buɗe bawul ɗin ƙarar shigarwa da shayewar iska zuwa matsakaicin, kuma ya kamata a rufe bawul ɗin dawo da iska.
②A cikin busassun bushewa da wurin kawar da wari, ana iya ƙara ƙarar iskar da aka dawo da kyau, wanda zai iya adana wasu kuzari.
4. Tasirin yanayin zafi da zafi
Yanayin zafi mai zafi da lokacin zafi mai zafi a lokacin rani shine lokacin da ake yawan faruwa na ingantattun hatsarori na nau'in nau'i biyu na polyurethane mai bushe-tsari mai haɗaɗɗen manne Layer.Dangane da masana'anta na mannewa, kashi 95% na ingancin ra'ayoyin da aka samu a lokacin rani ba shi da alaƙa da Layer na mannewa.masu alaka.A karkashin yanayin yanayin zafi mai zafi da zafi mai zafi, ruwan da ke cikin iska yana da yawa sosai, kuma yana da sauƙi don shigar da tire mai manne ta hanyar volatilization na acetic acid don cinye wakili na curing, don haka rabo daga babban wakili. mannewa da kuma maganin warkewa ba shi da daidaituwa, yana haifar da mannewa bayan maganin mahadi.Tsallake-tsalle-tsalle-tsalle-tsalle da warkewa bai cika ba, kuma lalatawa da wrinkling suna bayyana lokacin da aka tafasa cikin ruwa.
Kamfanoni masu sassaucin ra'ayi waɗanda ba su da yanayin sarrafa zafin jiki da zafi na bitar ya kamata su kula da abubuwan da ke gaba a lokacin zafi mai zafi da lokacin zafi mai zafi:
①Ta hanyar gano yanayin zafin jiki da zafi da zafin jiki sama da tiren filastik da ganga mai ƙarfi, ana iya guje wa sabon abu na “dew point”.Da zarar "raɓan raɓa" ta faru, yana nufin cewa yawancin danshi a cikin iska ya shiga cikin tire na filastik, kuma yana da sauƙi ga Layer na roba ya bushe.
②Ya kamata jakunkuna da aka dafa su guje wa lokutan zafi mai yawa don sarrafa fili yayin shirye-shiryen samarwa.
③Bucket ethyl acetate da guga wurare dabam dabam da aka yi amfani da shi don haɗawa ya kamata a rufe kuma a rufe.Idan aka yi amfani da tiren filastik da aka rufe, za a iya ƙara rage tasirin yanayin zafi.
5. Maturation tsari bukatun
Janar yanayin tsufa: zazzabi 50 ~ 55 ℃, 48 hours.
Bugu da ƙari, kula da daidaituwa na curing na dukan fim ɗin nadi: ① ko zafin da aka nuna ya dace da ainihin zafin jiki kusa da fim ɗin fim (ainihin zafin jiki na babba, ƙananan, hagu, da dama na fim din. yi);② ko iska kusa da fim ɗin nadi zai iya cimma tasiri mai tasiri;③ iska mai iska Tasirin zafin jiki akan warkewa: Akwai wani tsari na canja wurin zafi, ko yanayin warkarwa na ainihin hada fim ɗin ya dace da buƙatun.(Wannan na iya zama babban abu a cikin ingancin da bai dace ba.)
D. tsarin yin jakar
Ƙarfin rufewar zafi na jakar busassun ya fi kyau, kuma mafi mahimmanci, ana buƙatar ingancin dukkanin tsari don zama barga, kamar: ① babu wani abu mara kyau na gida;② babu wani mummunan yanayin rufewa a cikin duka.
Lokacin yin buhunan marufi, kula da waɗannan abubuwan:
① A ƙarƙashin yanayin tabbatar da bayyanar hatimi, saita zazzabi mai ɗaukar zafi kaɗan kaɗan don guje wa abin da ya faru na ingancin rufewar zafi mara ƙarfi ya haifar da karkatacciyar kauri na fim ɗin da aka haɗa.
② A lokacin samarwa na yau da kullun, hatimin gefen ya kamata ya tabbatar da ingantaccen lokacin rufewar zafi guda uku.Lokacin da aka kashe na'urar sannan kuma a sake kunnawa, fuskar ɓangaren da aka danna mai zafi sau ɗaya ko sau biyu na iya yin sanyi lokacin da aka sake kunna ta (matsawar zafi ta farko ba ta iya taka rawar preheating kawai), kuma ainihin adadin ingantaccen hatimin zafi sau biyu ne kawai Don haka, Hakanan wajibi ne don saita yanayin zafi mai zafi mai zafi (zafin-zafi na iya zama mai kyau bayan sau biyu na latsawa mai zafi), don guje wa ƙaramin adadin ƙarancin rufewa. al'amari lokacin da aka kashe injin sannan a kunna.
③Yawancin buhunan dafaffen buhunan ruwa ne, wanda ke buƙatar juriya mai tsayi na jakunkunan marufi.A guji yanke gefen da aka rufe zafi lokacin yin jaka, musamman ma gefen wukar da ke rufe zafi bai kamata ya zama kaifi da yawa ba, kuma ya kamata a goge shi ko a goge shi yadda ya kamata..
E. Bukatun gwaji
1. Wakilin Samfura
①Lokacin da samfurin farko da aka tabbatar, da yawa daya ci gaba da samfur kamata rufe tsawon duk sealing wukake, don yadda ya kamata kauce wa sabon abu na m matalauta sealing da kuma rasa dubawa.
② Samfurin shine ɗaukar samfurori bayan ƙaddamarwa ya zama al'ada, daidaita yanayin zafin zafi, matsa lamba, da sauri na inji, kuma sake tabbatarwa bayan maye gurbin fim ɗin.
2. Amfanin gano ƙarfin hatimin zafi da hanyar hukunci
① Hanyar da ta dace ita ce a yanke gefen jakar da aka rufe zafi a cikin kunkuntar tsiri na 20-30mm kuma a yayyage shi a cikin shugabanci daidai da layin rufewa.
②Kada a sami wani al'amari cewa nisa fiye da 2mm za a iya yage a cikin gefen hatimi.In ba haka ba, ƙarfin ya cancanci lokacin gwaji akan na'ura, amma ba a haɗa Layer ɗin zafi gaba ɗaya ba, wanda ke haifar da raguwa mai yawa a cikin ƙarfin rufewa yayin tafasa da kuma sabon abu na fashewar jakar saboda tafasa.Lokacin da aka cire jakar daga mahaɗin tsakanin yadudduka na ciki na PE a gefen rufewa bayan an dafa shi cikin ruwa, yana da matsala cewa ƙarshen rufewar zafi ba ta da ƙarfi.
3. Babban abubuwan gwajin tafasa
(1) Hanyar Samfur
① Bayan injin gwajin na buhun buhunan busassun ya zama al'ada, mai duba zai ci gaba da zaɓar jakunkuna da yawa daga kowane jere a cikin jakar injin gwajin (yawan samfuran da ake buƙata don rufe tsayin wuka mai rufewa), sannan kuma ɗauka. fitar da tafasasshen gwajin bayan an rufe shi da ruwa.
②Lokacin da za a yi samfuri fiye da ɗaya jaka, yi amfani da alama don yiwa jakar alama a sarari da hagu da dama don tantance daidai matsayin wuƙan rufewa inda zafin zafi bai da ƙarfi.
③ Lokacin da yanayin tsarin samarwa na yau da kullun ya canza sosai, kamar saurin injin, daidaita yanayin zafi, da sauransu, ya zama dole a sake samfurin don gwajin tafasa.
④ Bayan kowane motsi, ya kamata a sake yin samfurin don gwajin aikin tafasa.
⑤ Rarraba da ma'amala da samfuran da ba su cancanta ba da aka samu a cikin tsari cikin lokaci.
(2) Sharuɗɗan gwaji
① Sanya 1/3 zuwa 1/2 na ruwa a cikin jakar marufi, kuma gwada fitar da iska lokacin rufewa.Idan an rufe iska da yawa, yana da sauƙi don haifar da kuskure.An ƙara murfi yayin gwajin tafasa don ƙara ɗan ƙara matsa lamba a cikin jakar.
②Lokacin tafasa yana ƙarƙashin yanayin amfani da abokin ciniki, ko bisa ga ƙa'idodin gwaji masu dacewa.
(3) Gwajin cancanta
① Babu gabaɗaya ko ɓangaren wrinkling da delamination a saman jakar;Ana gano ƙarfin bawo ta hanyar ji da hannu bayan tafasa.
② Tawada bugu ba shi da launi ko zubar jini;
③ Babu yabo da karyewar jaka;babu wani abin mamaki a fili mai gudu a gefen hatimi (ana sarrafa nisa mai nisa tsakanin 2mm).
Lokacin aikawa: Mayu-05-2022