Kutentha shrink filimu zolembandi zolembedwa zamakanema zopyapyala zosindikizidwa pamakanema apulasitiki kapena machubu pogwiritsa ntchito inki yapadera.Panthawi yolemba zilembo, ikatenthedwa (pafupifupi 70 ℃), chizindikiro chocheperako chimachepa mwachangu m'mphepete mwa chidebe ndikumamatira mwamphamvu pamwamba pa chidebecho.Zolemba za filimu zochepetsera kutentha zimaphatikizanso zilembo zocheperako komanso zomata zochepera.
Makhalidwe a ntchito
Label sleeve ya Shrinkage ndi chizindikiro chozungulira chopangidwa ndi filimu yochepetsera kutentha ngati gawo lapansi, lomwe limasindikizidwa ndikupangidwa.Ili ndi mawonekedwe osavuta kugwiritsa ntchito ndipo ndi yoyenera kwambiri pazotengera zokhala ndi mawonekedwe apadera.Malebulo ofupikitsa nthawi zambiri amafunikira zida zapadera zolembera zomwe zasindikizidwa pachidebecho.Choyamba, chipangizo cholembera chimatsegula cholembera chamanja chosindikizidwa, chomwe nthawi zina chimafuna kubowola;Kenako, dulani chizindikirocho mumiyeso yoyenera ndikuyiyika pachidebecho;Kenako gwiritsani ntchito mayendedwe a nthunzi, infrared, kapena mpweya wotentha pothandizira kutentha kuti mumangirire chizindikirocho pamwamba pa chidebecho.
Chifukwa cha kuwonekera kwakukulu kwa filimuyo palokha, chizindikirocho chimakhala ndi mtundu wowala komanso wonyezimira.Komabe, chifukwa cha kufunikira kwa shrinkage panthawi yogwiritsira ntchito, pali drawback of pattern deformation, makamaka pazinthu zosindikizidwa ndi barcode.Mapangidwe okhwima ndi kuwongolera khalidwe losindikiza kuyenera kuchitidwa, apo ayi kusinthika kwa chitsanzo kumapangitsa kuti khalidwe la barcode likhale losayenerera.Zolemba za Shrink zitha kulembedwa pogwiritsa ntchito zida zachikhalidwe, zomwe zimafunikira kugwiritsa ntchito zomatira komanso kutentha kwambiri panthawi yolemba.Panthawi ya shrinkage, zomatira zonyezimira zotentha zimakondedwa chifukwa cha kupsinjika komwe kumapangidwa ndi zomatira pazigawo zomwe zikuphatikizana za filimuyo.
Prepress kupanga
Chifukwa chakefilimu yochepetsera kutenthandi filimu ya thermoplastic yomwe imayang'aniridwa ndi kutambasula panthawi yopanga ndikuchepa panthawi yogwiritsira ntchito.Chifukwa chake, ziribe kanthu kuti ndi njira iti yosindikizira yomwe imagwiritsidwa ntchito posindikiza, musanapange mawonekedwe apamwamba, mitengo yopingasa komanso yowongoka yazinthuzo, komanso zolakwika zololeka zamitundu yosiyanasiyana yazithunzi zokongoletsa ndi zolemba pambuyo pakuchepa, ziyenera kuganiziridwa. kuti muwonetsetse kubwezeretsedwa kolondola kwa pateni, zolemba, ndi barcode zomwe zatsitsidwa pachidebecho.
Mayendedwe a chitsanzo
Kaya ndifilimu yochepetsera kutenthaimasindikizidwa pogwiritsa ntchito kusindikiza kwa gravure kapena kusindikiza kwa flexographic, kusindikiza kwake kumakhala makamaka mu njira yosindikizira yamkati, ndipo malangizo okhudzana ndi chitsanzo pa mbale yosindikizira ayenera kukhala abwino.Masiku ano, palinso mafilimu ocheperako osindikizira pamwamba.Pamenepa, ndondomeko ya chitsanzo pa mbale yosindikizira iyenera kusinthidwa.
Ulamuliro wa machitidwe
Chifukwa cha zofooka za kusindikiza kwa flexographic, ngati filimu yochepetsera imasindikizidwa pogwiritsa ntchito kusindikiza kwa flexographic, mlingo wa chithunzicho suyenera kukhala wosakhwima, pamene kugwiritsa ntchito kusindikiza kwa gravure kungafunike chithunzi cholemera kwambiri.
Mapangidwe a miyeso
Kutsika kwapang'onopang'ono kwa filimu yochepetsera kutentha yomwe imagwiritsidwa ntchito posindikiza ndi 50% mpaka 52% ndi 60% mpaka 62%, ndipo imatha kufika 90% panthawi yapadera.Kutsika kwa nthawi yayitali kumafunika kukhala 6% mpaka 8%.Komabe, panthawi yomwe filimuyo ikuphwanyidwa, chifukwa cha kuchepa kwa chidebecho, njira zopingasa komanso zowongoka sizingagwirizane.Kuti muwonetsetse kubwezeretsedwa kolondola kwa kapangidwe ka mgwirizano, zolemba, ndi barcode, ndikofunikira kulingalira mawonekedwe a chidebe ndikuwerengera kukula koyenera ndi kusinthika kutengera momwe zinthu ziliri.Kwa zilembo zochepetsera kutentha zomwe zimafuna kutembenuza mafilimu ngati mapepala kukhala mawonekedwe a cylindrical ndi kusindikiza madera omwe akudutsana pamodzi ndi zomatira, ndikofunika kuzindikira kuti palibe zojambula kapena zolemba zomwe ziyenera kupangidwa pa malo osindikizira kuti asasokoneze mphamvu zomangira.
Kuyika barcode
Nthawi zambiri, njira yoyika barcode iyenera kukhala yogwirizana ndi momwe amasindikizira, apo ayi zingayambitse kupotoza kwa mizere ya barcode, zomwe zingakhudze zotsatira za sikani ndikupangitsa kuwerenga molakwika.Kuphatikiza apo, kusankha mitundu yazinthu zamalebulo kuyenera kuyang'ana pamitundu yamawanga momwe kungathekere, ndipo kupanga zoyera ndikofunikira, zomwe zitha kupangidwa zonse kapena zopanda kanthu malinga ndi momwe zilili.Mtundu wa ma barcode uyenera kutsatira zomwe wamba, ndiko kuti, kuphatikiza mitundu ya mipiringidzo ndi malo kuyenera kutsatira mfundo yofananira ndi mtundu wa barcode.Kusankha zipangizo zosindikizira.Kusindikiza kwakutentha kumachepetsa zolembayawunikidwa mwachidule, ndipo kuwonjezera pa kulamulira bwino ntchito yosindikiza, zinthuzo zimakhala ndi mbali yaikulu pa khalidwe lake.Choncho, kusankha zipangizo zoyenera n’kofunika kwambiri.Tsimikizirani makulidwe azinthu zamakanema potengera gawo lazogwiritsira ntchito, mtengo, mawonekedwe a filimuyo, kachulukidwe kake, kusindikiza, ndi kulembera zofunikirachizindikiro chotsitsa kutentha.Zofunikira zonse popangachepetsa zilembo zamakanemaNdikuti makulidwe a filimuyi akuyenera kukhala pakati pa 30 microns ndi 70 microns, ndi 50 microns, 45 microns, ndi 40 microns amagwiritsidwa ntchito kawirikawiri.Kunenepa kwake kumadalira momwe zida zolembera zimagwirira ntchito.Pazinthu zomwe zasankhidwa, pamafunika kuti kuchuluka kwa filimuyo kuchuluke m'kati mwazogwiritsira ntchito, ndipo kutsika kwapang'onopang'ono (TD) kumakhala kokwera kuposa kutsika kwautali (MD).The lateral shrinkage mitengo ya zinthu ambiri ntchito ndi 50% mpaka 52% ndi 60% mpaka 62%, ndipo akhoza kufika 90% mwapadera.Kutsika kwa nthawi yayitali kumafunika kukhala pakati pa 6% ndi 8%.Kuonjezera apo, chifukwa cha kukhudzidwa kwakukulu kwa filimu yochepetsera kutentha, ndikofunika kupewa kutentha kwakukulu panthawi yosungira, kusindikiza, ndi kuyendetsa.
Zofunikira zosindikiza
Mosiyana ndi zolemba zamapepala, filimu yochepetsera kutentha imagwiritsa ntchito zida zosindikizira zosayamwa mongaZithunzi za PVC, PP, PETG, OPS, OPP, ndi osiyanasiyana Mipikisano wosanjikiza co extruded mafilimu.Makhalidwe a zipangizozi amatsimikizira kuti njira yawo yosindikizira ndi yosiyana ndi zolemba zamapepala.Muzosindikiza zachikhalidwe, kusindikiza kwa flexographic (kusindikiza kwa flexographic), kusindikiza kwa gravure, ndi kusindikiza pazithunzi za silika, njira yosindikizira ya zilembo za mafilimu amachepetsa kutentha akadali kusindikiza kwa gravure.Chifukwa chachikulu ndi chakuti pali makina ambiri osindikizira a gravure m'nyumba, ndipo mpikisano wa ndalama zosindikizira ndi woopsa.Kuphatikiza apo, zosindikizira za gravure zimakhala ndi mawonekedwe a inki wandiweyani, mitundu yowala, ndi zigawo zolemera, ndipo mitundu iyi ya zilembo imakhala yosindikiza kwambiri.Makina osindikizira a gravure amatha kupirira mapepala mamiliyoni ambiri, Choncho kwa ziwalo zamoyo zomwe zimakhala ndi mphamvu zambiri zosindikizira, mosakayika ndizotsika mtengo kwambiri.Komabe, ndi kuwonjezereka kwa mpikisano wamsika ndi chitukuko cha matekinoloje monga flexographic plate kupanga, makina, ndi inki, gawo la kusindikiza kwa flexographic likuwonjezeka chaka ndi chaka.Koma malinga ndi mmene kasitomala amaonera, chofunika kwambiri ndi kukwaniritsa mfundo zabwino, kuchepetsa ndalama, ndi kusankha njira yoyenera yosindikizira.
Kuwongolera kupsinjika
Chifukwa chakuti mafilimu opyapyala amatha kusintha kusinthasintha panthawi yosindikizira, zomwe zimapangitsa kuti anthu asalembetsedwe molakwika, ndikofunika kumvetsera kwambiri kulamulira kwachisokonezo panthawi yosindikiza kuti mukhalebe okhazikika komanso osasunthika.Kukula kwa kusintha kwamphamvu kuyenera kutsimikiziridwa potengera mtundu ndi mphamvu ya filimuyo.Mwachitsanzo, ngati mphamvu yamakokedwe ya filimuyo ndi yofooka komanso sachedwa kusinthika kwamphamvu, zovutazo ziyenera kukhala zazing'ono;Kwa mafilimu omwe ali ndi mphamvu zolimbitsa thupi, zovutazo zimatha kuwonjezereka mofanana.Pankhani ya filimu yamtundu wina, m'lifupi ndi makulidwe a filimuyo ndi zinthu zofunika kwambiri zomwe zimatsimikizira kukula kwa zovuta.Mafilimu akuluakulu ayenera kukhala ndi vuto lalikulu kuposa mafilimu opapatiza, pamene mafilimu akuluakulu amakhala ndi zovuta kwambiri kuposa mafilimu ochepa kwambiri.
Gravurefilimu yochepetsera kutenthamakamaka amagwiritsa ntchito makina osindikizira amtundu wa unit gravure, omwe tsopano ali ndi makina owongolera odziwikiratu komanso makina owongolera kalembera amtundu.Kutengera kulakwitsa koyezedwa pakati pa zolembera zamitundu, kukangana kwa malo otsegula, malo osindikizira, ndi malo okhotakhota kumasinthidwa kuti zitsimikizire kukhazikika kokhazikika pakusindikiza komanso kulondola kwa kusindikiza komaliza.Poyerekeza ndi makina osindikizira amtundu wamtundu wa flexographic, makina osindikizira a CI amtundu wa flexographic ndi oyenera kugwiritsa ntchito mafilimu a flexographic heat shrink.Izi ndichifukwa choti panthawi yosindikiza, gulu lililonse lamitundu limagawana ng'oma yofananira, ndipo gawo laling'ono ndi ng'oma yosindikizira zimamangirizidwa mwamphamvu, ndikusintha pang'ono pamakangano, zomwe zimapangitsa kuti pakhale kusinthika pang'ono kwa zinthuzo komanso kulembetsa bwino kwambiri.
Kusankha kwa inki
Pali mitundu inayi ya inki yomwe imagwiritsidwa ntchitokuchepetsa kusindikiza kwa filimu: inki zosungunulira, inki zochokera m'madzi, ma inki a UV a cationic, ndi ma inki a UV aulere.Pankhani ya kagwiritsidwe ntchito, inki zosungunulira zimatsogola pantchito yosindikiza zilembo zamakanema, zotsatiridwa ndi inki zamadzi ndi inki zaulere za UV.Komabe, ma inki a cationic UV sagwiritsidwa ntchito kwambiri m'munda wamafilimu ocheperako chifukwa cha mtengo wawo wokwera komanso zovuta kusindikiza.The zosungunulira zochokera inki makamaka ntchito kutentha shrink mafilimu mu gravure ndi flexographic kusindikiza.Mafilimu osiyanasiyana ayenera kugwiritsa ntchito inki yapadera ndipo sangasakanizidwe.Makampani a inki nthawi zambiri amapereka mitundu itatu yosungunulira ya inki yogwirizana ndi zinthu zosiyanasiyana: kuyanika mwachangu, kuyanika kwapakatikati, ndi kuyanika pang'onopang'ono.Mafakitole osindikizira amatha kusankha chiŵerengero choyenera cha zosungunulira kutengera zinthu zenizeni zopanga monga kutentha kwa msonkhano ndi liwiro losindikiza.Kuphatikiza apo, inki yochokera m'madzi ndi inki ya UV ingagwiritsidwenso ntchito.Komabe, mosasamala kanthu za mtundu wa inki yogwiritsidwa ntchito, m'pofunika kuganizira mozama kuti zizindikiro za ntchito za inki ziyenera kukwaniritsa zofunikira.Mwachitsanzo, shrinkage mlingo wa inki ayenera kufanana ndi shrinkage makhalidwe a kutentha shrink filimu, apo ayi zingachititse wosanjikiza inki kugawanika kapena ngakhale deink.
Kuwongolera kutentha kwa kuyanika
Ndikofunikira kwambiri kuwongolera kutentha kowumitsa bwino posindikiza mafilimu ochepetsa kutentha.Ngati kutentha kwa kuyanika kuli kwakukulu kwambiri, zinthuzo zimakhala ndi kuchepa kwa kutentha;Ngati kutentha kuli kotsika kwambiri, inki sidzauma mokwanira, zomwe zimapangitsa kuti pakhale kumatira komaliza ndi dothi kumbuyo.Zipangizo zoyanika mitundu zimayikidwa pamakina onse osindikizira a gravure ndi flexographic kuti awonetsetse kuyanika kwathunthu kwa mtundu uliwonse wa inki.Panthawi imodzimodziyo, pofuna kupewa kusinthika kwa zinthu panthawi yowumitsa, pamafunika kukhazikitsa njira zoziziritsira mpweya pakati pa mapepala amtundu kuti athetse kutentha kotsalira.Masiku ano, ng'oma zozizira zimagwiritsidwa ntchito m'makina osindikizira, omwe amatha kuchepetsa kutentha kwa zinthu panthawi yosindikiza.Chifukwa cha kukwanira kosindikiza kwa mafilimu ocheperako, monga kukhazikika kwamphamvu kwamankhwala, kutsika kwamphamvu pamwamba, kusalala pamwamba popanda kuyamwa, komanso kusalumikizana bwino ndi inki yosindikiza.Chifukwa chake, mosasamala kanthu za njira yosindikizira yomwe imagwiritsidwa ntchito, filimuyo iyenera kuchitidwa chithandizo chapamwamba cha corona kuti ipititse patsogolo mphamvu zake komanso roughness yake, ndikuwongolera kulimbikira kwa inki pazinthu zakuthupi.
Nthawi yotumiza: Jan-25-2024
