1. Tanthauzo la Filimu Yotambasula ya PE
Filimu yotambasula ya PE (yomwe imadziwikanso kuti stretch wrap) ndi filimu ya pulasitiki yokhala ndi zinthu zomatira zomwe zimatha kutambasulidwa ndikuzunguliridwa bwino ndi katundu, kaya mbali imodzi (extrusion) kapena mbali zonse ziwiri (yopukutidwa). Guluuyo samamatira pamwamba pa katunduyo koma amakhalabe pamwamba pa filimuyo. Sichifuna kuchepetsa kutentha panthawi yopaka, zomwe zimathandiza kusunga mphamvu, kuchepetsa ndalama zopaka, kuthandizira kunyamula zidebe, komanso kukonza magwiridwe antchito. Kuphatikiza kwa ma pallet ndi ma forklift kumachepetsa ndalama zoyendera, ndipo kuwonekera bwino kumathandiza kuzindikira katundu, kuchepetsa zolakwika zogawa.
Mafotokozedwe: M'lifupi mwa filimu ya makina 500mm, m'lifupi mwa filimu yamanja 300mm, 350mm, 450mm, 500mm, makulidwe 15um-50um, akhoza kudulidwa m'magawo osiyanasiyana.
2. Kusankha kwa Kugwiritsa Ntchito Filimu Yotambasula ya PE
(1) Filimu Yotambasula Pamanja:Njirayi imagwiritsa ntchito makamaka ma CD opangidwa ndi manja, ndipo filimu yotambasula ndi manja nthawi zambiri imakhala ndi zofunikira zochepa. Mpukutu uliwonse umalemera pafupifupi 4kg kapena 5kg kuti ugwire ntchito mosavuta.
(2) Filimu Yotambasula Makina:Filimu yotambasula ya makina imagwiritsidwa ntchito popaka zinthu, makamaka chifukwa cha kuyenda kwa katundu kuti akwaniritse kupakidwa. Imafuna mphamvu yolimba komanso kutambasuka kwa filimuyo.
Kuchuluka kwa kufalikira kwa dzira ndi 300%, ndipo kulemera kwake ndi 15kg.
(3) Filimu Yoyambira Kutambasula Makina:Mtundu uwu wa filimu yotambasula umagwiritsidwa ntchito makamaka popaka zinthu ndi makina. Popaka zinthu, makina opaka zinthu amayamba ndi kutambasula filimuyo kufika pamlingo winawake kenako n’kuikulunga mozungulira katundu woti apake. Imadalira kulimba kwa filimuyo kuti ipake zinthuzo molumikizana. Chogulitsacho chili ndi mphamvu zambiri zomangika, kutalika, komanso kukana kubowoka.
(4) Filimu Yamitundu:Makanema otambasula amitundu yosiyanasiyana amapezeka mu buluu, wofiira, wachikasu, wobiriwira, ndi wakuda. Opanga amagwiritsa ntchito makataniwo popakira katundu pamene akusiyanitsa pakati pa zinthu zosiyanasiyana, zomwe zimapangitsa kuti zikhale zosavuta kuzindikira katundu.
3.Kulamulira kwa Kumata kwa Filimu ya PE
Kumatira bwino kumaonetsetsa kuti zigawo zakunja za filimu yolongedza zimamatirana, zomwe zimateteza pamwamba pa zinthu ndikupanga gawo lopepuka loteteza lakunja kuzungulira zinthuzo. Izi zimathandiza kupewa fumbi, mafuta, chinyezi, madzi, ndi kuba. Chofunika kwambiri, kulongedza filimu yotambasula kumagawa mphamvu mofanana kuzungulira zinthu zolongedza, kupewa kupsinjika kosagwirizana komwe kungayambitse kuwonongeka kwa zinthuzo, zomwe sizingatheke ndi njira zachikhalidwe zolongedza monga kulumikiza, kulumikiza, ndi tepi.
Njira zopezera kumatira zimaphatikizapo mitundu iwiri: imodzi ndi kuwonjezera PIB kapena gulu lake lalikulu ku polima, ndipo inayo ndi kusakaniza ndi VLDPE.
(1) PIB ndi madzi owoneka bwino komanso okhuthala. Kuwonjezera mwachindunji kumafuna zida zapadera kapena kusintha zida. Nthawi zambiri, PIB masterbatch imagwiritsidwa ntchito. PIB imakhala ndi njira yosamutsira, yomwe nthawi zambiri imatenga masiku atatu, ndipo imakhudzidwanso ndi kutentha. Imakhala ndi kumatira kwamphamvu kutentha kwambiri komanso kumatira kochepa kutentha kochepa. Pambuyo potambasula, kumatira kwake kumachepa kwambiri. Chifukwa chake, filimu yomalizidwayo imasungidwa bwino mkati mwa kutentha kwina (kutentha koyenera kosungira: 15°C mpaka 25°C).
(2) Kusakaniza ndi VLDPE kumakhala ndi kuuma pang'ono koma sikufuna zida zapadera. Kuuma kwake kumakhala kokhazikika, sikumakhudzidwa ndi nthawi, komanso kumakhudzidwa ndi kutentha. Kumamatira pang'ono kutentha kuposa 30°C ndipo kumamatira pang'ono kutentha pansi pa 15°C. Kusintha kuchuluka kwa LLDPE mu guluu kumatha kukwaniritsa kukhuthala komwe kukufunika. Njirayi nthawi zambiri imagwiritsidwa ntchito pa mafilimu atatu ophatikizana.
4. Makhalidwe a Filimu Yotambasula ya PE
(1) Kugwirizanitsa: Ichi ndi chimodzi mwa zinthu zazikulu kwambiri zomwe zimapangitsa kuti zinthu zikhale zokhazikika, zomwe zimamangirira zinthu mwamphamvu kukhala zokhazikika, ngakhale zitakhala zovuta, zomwe zimaletsa kumasuka kapena kulekanitsa zinthu. Mapaketi ake samakhala ndi m'mbali zakuthwa kapena zomata, motero amapewa kuwonongeka.
(2) Chitetezo Choyambirira: Chitetezo choyamba chimapereka chitetezo pamwamba pa zinthu, ndikupanga chitetezo chopepuka chakunja. Chimaletsa fumbi, mafuta, chinyezi, madzi, ndi kuba. Kulongedza filimu yotambasula kumagawa mphamvu mofanana kuzungulira zinthu zomwe zapakidwa, kuteteza kusamuka ndi kuyenda panthawi yonyamula, makamaka m'mafakitale a fodya ndi nsalu, komwe kumakhala ndi zotsatira zapadera pakulongedza.
(3) Kusunga Ndalama: Kugwiritsa ntchito filimu yotambasula poika zinthu kungathandize kuchepetsa ndalama zogwiritsira ntchito. Filimu yotambasula imagwiritsa ntchito pafupifupi 15% yokha ya bokosi loyambirira, pafupifupi 35% ya filimu yochepetsera kutentha, ndi pafupifupi 50% ya bokosi la makatoni. Imachepetsanso mphamvu ya ogwira ntchito, imawonjezera magwiridwe antchito, komanso imawonjezera kuchuluka kwa ma CD.
Mwachidule, gawo logwiritsira ntchito filimu yotambasula ndi lalikulu kwambiri, ndi madera ambiri ku China omwe sanafufuzidwebe, ndi madera ambiri omwe sanafufuzidwebe kwambiri. Pamene gawo logwiritsira ntchito likukulirakulira, kugwiritsa ntchito filimu yotambasula kudzawonjezeka kwambiri, ndipo kuthekera kwake pamsika ndi kwakukulu. Chifukwa chake, ndikofunikira kulimbikitsa mwamphamvu kupanga ndi kugwiritsa ntchito filimu yotambasula.
5. Kugwiritsa ntchito Filimu Yotambasula ya PE
Filimu yotambasula ya PE ili ndi mphamvu yolimba kwambiri, yolimba, yowonekera bwino, komanso yobwezeretsa bwino. Ndi chiŵerengero cha 400% chotambasula chisanathe, ingagwiritsidwe ntchito poika m'zitini, kuphimba madzi, kuteteza fumbi, kuletsa kufalikira kwa zinthu, komanso kupewa kuba.
Ntchito: Imagwiritsidwa ntchito popangira mapepala ndi zinthu zina zomangira ndipo imagwiritsidwa ntchito kwambiri pogulitsa kunja, kupanga mabotolo ndi zitini, kupanga mapepala, zida zamagetsi ndi zida zamagetsi, mapulasitiki, mankhwala, zipangizo zomangira, zinthu zaulimi, chakudya, ndi mafakitale ena.
Nthawi yotumizira: Okutobala-25-2023