Sikuti mafilimu onse amapangidwa mofanana.Izi zimabweretsa mavuto kwa woyendetsa komanso woyendetsa.Izi ndi momwe mungachitire nawo.#kukonza malangizo #zabwino kwambiri
Pa ma winders apakati, kupsinjika kwa intaneti kumayendetsedwa ndi ma drive apansi olumikizidwa ndi stacker kapena pinch rollers kuti akwaniritse kudulidwa kwa intaneti ndi kugawa masamba.Kuvuta kwa mafunde kumayendetsedwa paokha kuti kuonjeze kuuma kwa koyilo.
Mukamangirira filimuyo pamtunda wapakati, kupsinjika kwa intaneti kumapangidwa ndi torque yapakati pagalimoto.Kuvuta kwa ukonde kumayamba kukhazikitsidwa kuuma mpukutu womwe ukufunidwa ndiyeno kuchepetsedwa pang'onopang'ono pomwe filimuyo ikutha.
Mukamangirira filimuyo pamtunda wapakati, kupsinjika kwa intaneti kumapangidwa ndi torque yapakati pagalimoto.Kuvuta kwa ukonde kumayamba kukhazikitsidwa kuuma mpukutu womwe ukufunidwa ndiyeno kuchepetsedwa pang'onopang'ono pomwe filimuyo ikutha.
Mukamangirira zinthu zamakanema pakatikati/pamphepo yam'mwamba, chodzigudubuza chimayendetsedwa kuti chiwongolere kupsinjika kwa intaneti.Nthawi yokhotakhota sizitengera kupsinjika kwa intaneti.
Ngati maukonde onse a filimu anali angwiro, kupanga mipukutu yabwino sikukanakhala vuto lalikulu.Tsoka ilo, mafilimu angwiro kulibe chifukwa cha kusiyana kwachilengedwe kwa resins ndi inhomogeneities pakupanga mafilimu, zokutira, ndi malo osindikizidwa.
Poganizira izi, ntchito yoyendetsa mafunde ndikuwonetsetsa kuti zolakwikazi sizikuwoneka mowonekera komanso sizikuwonjezeka panthawi yokhotakhota.Woyendetsa winder ndiye akuyenera kuwonetsetsa kuti njira yokhotakhotayo siyikhudzanso mtundu wazinthu.Chovuta chachikulu ndikuwongolera filimu yosinthira kuti igwire ntchito mosasunthika popanga makasitomala ndikupanga chinthu chapamwamba kwambiri kwa makasitomala awo.
Kufunika kwa Filimu Yosasunthika Kachulukidwe ka filimu, kapena kukangana kozungulira, ndiye chinthu chofunikira kwambiri pozindikira ngati filimu ili yabwino kapena yoyipa.Chilonda chofewa kwambiri chimakhala "chozungulira" chikang'ambika, chogwiridwa, kapena kusungidwa.Kuzungulira kwa ma rolls ndikofunikira kwambiri kwa kasitomala kuti athe kukonza mipukutuyi pa liwiro lalikulu lopanga ndikusunga kusintha kocheperako.
Mipukutu yolimba kwambiri imatha kuyambitsa mavuto awoawo.Zitha kuyambitsa zovuta zotsekereza pamene zigawozo zimalumikizana kapena kumamatira.Mukakhomerera filimu yotambasula pachikatikati chokhala ndi mipanda yopyapyala, kupindika mpukutu wokhazikika kungayambitse pakati.Izi zitha kuyambitsa zovuta mukachotsa shaft kapena kuyika shaft kapena chuck panthawi yopumula.
Mpukutu womwe umakhala wothina kwambiri ukhozanso kukulitsa zovuta zapaintaneti.Mafilimu nthawi zambiri amakhala ndi malo okwera komanso otsika pang'ono pamakina opingasa pomwe intaneti imakhala yokhuthala kapena yowonda.Pomangirira dura mater, madera a makulidwe akulu amalumikizana.Zigawo mazana kapena masauzande zikavulala, zigawo zazitali zimapanga zitunda kapena zolozera pampukutuwo.Filimuyo ikatambasulidwa paziwonetserozi, imapindika.Maderawa amapanga zolakwika zomwe zimatchedwa "matumba" mufilimuyi pamene mpukutuwo umamasuka.Mphepo yamkuntho yolimba yokhala ndi sliver yokhuthala pafupi ndi sliver yocheperako imatha kubweretsa zovuta zapamphepo zomwe zimatchedwa kuti waviness kapena zingwe pamphepo.
Kusintha kwakung'ono mu makulidwe a mpukutu wa bala sikungawonekere ngati mpweya wokwanira ukulungidwa mu mpukutuwo m'magawo otsika ndipo ukonde sunatambasulidwe m'magawo apamwamba.Komabe, mipukutuyo iyenera kuvulazidwa mwamphamvu mokwanira kuti ikhale yozungulira ndikukhalabe momwemo panthawi yogwira ndi kusunga.
Kusintha kwachisawawa kwa makina opangira makina Makanema ena osinthika, kaya panthawi ya extrusion kapena panthawi yopaka ndi kuyanika, amakhala ndi makulidwe a makina ndi makina omwe ndi aakulu kwambiri kuti akhale olondola popanda kukokomeza zolakwika izi.Kuti muwongolere kusintha kwa makina opangira makina opangira makina, ukonde kapena slitter rewinder ndi winder zimayenda mmbuyo ndi mtsogolo mogwirizana ndi intaneti pomwe ukonde umadulidwa ndikuvulala.Kusuntha kwa makinawo kumatchedwa oscillation.
Kuti oscillate bwinobwino, liwiro ayenera kukhala mkulu mokwanira mosintha kusiyanasiyana makulidwe, ndi otsika mokwanira kuti kupotoza kapena makwinya filimu.Lamulo la chala chachikulu pa liwiro logwedezeka kwambiri ndi 25 mm (1 inchi) pamphindi pa liwiro lililonse la 150 m/min (500 ft/min).Moyenera, liwiro la oscillation limasintha molingana ndi liwiro lokhotakhota.
Kuwunika Kukanika Kwapaintaneti Pamene mpukutu wazinthu zamakanema osinthika ukatsekeredwa mkati mwa mpukutuwo, mpukutuwo umakhala wovuta kapena kupsinjika kotsalira.Ngati kupsyinjika kumeneku kumakhala kwakukulu panthawi yokhotakhota, kupindika kwamkati molunjika pakati kumakhala ndi katundu wopanikizika kwambiri.Izi ndizomwe zimayambitsa zolakwika za "bulge" m'malo omwe amakhala pafupi ndi koyilo.Akamakhota mafilimu osasunthika komanso oterera kwambiri, wosanjikiza wamkati amatha kumasuka, zomwe zingapangitse kuti mpukutuwo upiringike ukavulala kapena kutambasula ukakhala wosavulala.Pofuna kupewa izi, bobbinyo iyenera kumangidwa mwamphamvu pakati pakatikati, ndiyeno pang'onopang'ono pang'onopang'ono pamene kukula kwa bobbin kumawonjezeka.
Izi nthawi zambiri zimatchedwa rolling hardness taper.Kukula kwake kwa chilonda chomalizidwa kumapangitsanso kuti mbiri ya taper ikhale yofunika kwambiri.Chinsinsi chopangira zitsulo zolimba zolimba kwambiri ndikuyamba ndi maziko olimba amphamvu kenako ndikumangirira pang'onopang'ono ma koyilo.
Kukula kwake kwa chilonda chomalizidwa kumapangitsanso kuti mbiri ya taper ikhale yofunika kwambiri.
Maziko olimba olimba amafuna kuti pokhotakhota ayambe ndi phata lapamwamba, losungidwa bwino.Zinthu zambiri zamakanema zimadulidwa pachimake papepala.Pachimake ayenera kukhala wamphamvu mokwanira kupirira compressive mapiringidzo kupsyinjika wopangidwa ndi filimu mwamphamvu bala mozungulira pachimake.Childs, pepala pachimake zouma mu uvuni kuti chinyezi okhutira 6-8%.Ngati ma coreswa asungidwa pamalo a chinyezi chambiri, amatha kuyamwa chinyezicho ndikukulitsa kukula kwake.Kenako, pambuyo pozungulira, ma coreswa amatha kuyanika kuti pakhale chinyezi chochepa ndikuchepetsedwa kukula.Izi zikachitika, maziko a kuponya kolimba kovulaza adzakhala atapita!Izi zitha kubweretsa zolakwika monga kupindika, kuphulika ndi/kapena kutuluka kwa mipukutu ikagwiridwa kapena kutsegulidwa.
Chotsatira chopezera maziko abwino a koyilo ndikuyamba kupindika ndi kuuma kwambiri kwa koyiloyo.Ndiye, pamene mpukutu wa filimuyo wavulala, kukhazikika kwa mpukutuwo kuyenera kuchepetsedwa mofanana.Kuchepetsa kovomerezeka kwa kuuma kwa mpukutu m'mimba mwake komaliza kumakhala 25% mpaka 50% ya kuuma koyambirira komwe kumayesedwa pachimake.
Mtengo wa kuuma kwa mpukutu woyambirira ndi mtengo wa taper wa kugwedezeka kwa mphepo nthawi zambiri zimadalira chiŵerengero cha kumanga-mmwamba kwa mpukutu wa bala.Chokwera ndi kuchuluka kwa mainchesi akunja (OD) pachimake mpaka kutalika komaliza kwa mpukutu wa bala.Kukula kokulirapo komaliza kwa bale (kukwezera kapangidwe kake), ndikofunikira kwambiri kuyamba ndi maziko abwino olimba komanso pang'onopang'ono mabala ofewa amphepo.Gome 1 limapereka lamulo la chala pamlingo wovomerezeka wa kuchepetsa kuuma kutengera kuchuluka kwa zinthu.
Zida zokhotakhota zomwe zimagwiritsidwa ntchito kuumitsa ukonde ndi mphamvu yapaintaneti, kutsika kwapansi (makina osindikizira kapena stacker kapena mawinda reel), ndi torque yokhotakhota kuchokera pakati pagalimoto pomangirira ukonde wafilimu pakati/pamtunda.Izi zomwe zimatchedwa TNT mfundo zokhotakhota zimakambidwa m'nkhani ya January 2013 ya Plastics Technology.Zotsatirazi zikufotokozera momwe angagwiritsire ntchito chilichonse mwa zida izi kupanga zoyesera zolimba ndipo zimapereka lamulo lachinthu choyambirira kuti mupeze zoyesa zolimba zamitundu yosiyanasiyana yosinthira.
Mfundo yamphamvu yokhotakhota ukonde.Mukakhomerera mafilimu otanuka, kugwedezeka kwa intaneti ndiye mfundo yayikulu yomwe imagwiritsidwa ntchito kuwongolera kuuma kwa mpukutuwo.The zolimba filimu anatambasula pamaso akupiringa, ndi olimba bala mpukutu adzakhala.Chovuta ndikuwonetsetsa kuti kuchuluka kwa zovuta zapaintaneti sikumayambitsa kupsinjika kwanthawi zonse mufilimuyi.
Monga zikuwonetsedwa mkuyu.1, mukamayendetsa filimu pa winder yoyera yapakati, kupsinjika kwa intaneti kumapangidwa ndi torque yokhotakhota yapakati pagalimoto.Kuvuta kwa ukonde kumayamba kukhazikitsidwa kuuma mpukutu womwe ukufunidwa ndiyeno kuchepetsedwa pang'onopang'ono pomwe filimuyo ikutha.Mphamvu yapaintaneti yomwe imapangidwa ndi ma drive apakati nthawi zambiri imawongoleredwa motsekeka ndi mayankho kuchokera ku sensa yamanjenje.
Mtengo wa mphamvu ya tsamba loyambirira komanso lomaliza lazinthu zinazake nthawi zambiri umatsimikiziridwa motsimikiza.Lamulo labwino lamphamvu pa intaneti ndi 10% mpaka 25% ya mphamvu zamakanema za filimuyo.Nkhani zambiri zosindikizidwa zimalimbikitsa kuchuluka kwa mphamvu za intaneti pazinthu zina zapaintaneti.Table 2 ikuwonetsa kusamvana kwazinthu zambiri zapaintaneti zomwe zimagwiritsidwa ntchito pamapaketi osinthika.
Kumangirira pa winder yoyera yapakati, kuvutitsidwa koyambirira kuyenera kukhala kufupi ndi kumtunda kwa kuchuluka kwamphamvu kovomerezeka.Kenaka chepetsani pang'onopang'ono kugwedezeka kwa mafunde kumunsi ovomerezeka omwe asonyezedwa mu tebulo ili.
Mtengo wa mphamvu ya tsamba loyambirira komanso lomaliza lazinthu zinazake nthawi zambiri umatsimikiziridwa motsimikiza.
Pamene akupiringa ukonde laminated wopangidwa ndi zipangizo zingapo zosiyanasiyana, kupeza analimbikitsa pazipita ukonde mavuto dongosolo laminated, ingowonjezerani pazipita ukonde mavuto chilichonse chimene wakhala laminated pamodzi (nthawi zambiri mosasamala ❖ kuyanika kapena zomatira wosanjikiza) ndi ntchito zotsatira za mikangano iyi.monga kuthamanga kwakukulu kwa ukonde wa laminate.
Chinthu chofunika kwambiri pazovuta pamene laminating flexible filimu composites ndi chakuti ma webs ayenera kugwedezeka asanayambe lamination kotero kuti mapindikidwe (kutalika kwa intaneti chifukwa cha kusokonezeka kwa intaneti) kumakhala kofanana pa intaneti iliyonse.Ngati ukonde umodzi wakokedwa kwambiri kuposa ukonde wina, zovuta zopindika kapena zopindika, zomwe zimadziwika kuti "tunneling", zitha kuchitika mu ukonde wopangidwa ndi laminated.Kuchuluka kwa zovutazo kuyenera kukhala chiŵerengero cha modulus ndi makulidwe a ukonde kuti muteteze kupindika ndi/kapena kupindika pambuyo poyanika.
Mfundo ya kuluma kozungulira.Mukakhomerera makanema osasunthika, ma clamping ndi torque ndiye mfundo zazikuluzikulu zomwe zimagwiritsidwa ntchito kuwongolera kuuma kwa mpukutu.Chotchingacho chimasintha kuuma kwa mpukutuwo pochotsa malire a mpweya omwe amatsatira ukonde kupita ku roller yotengera.The clamp imapangitsanso kupsinjika pa roll.Kulimba kwa chitsekerero, m'pamenenso chodzigudubuza chimalimba.Vuto lokhala ndi filimu yomangika yopindika ndikupereka mphamvu yokwanira yochotsa mpweya ndikuwongolera mpukutu wokhazikika, wowongoka popanda kupangitsa kugwedezeka kwamphepo panthawi yokhotakhota kuti mpukutuwo usamangirire kapena kupindika m'malo okhuthala omwe amasokoneza intaneti.
Kutsitsa kwa clamp sikudalira kwambiri zinthu kuposa kupsinjika kwa intaneti ndipo kumatha kusiyanasiyana kutengera zakuthupi ndi kuuma kofunikira.Pofuna kupewa makwinya a filimu ya bala chifukwa cha nip, katundu mu nip ndi osachepera kofunika kuti mpweya usatsekedwe mu mpukutuwo.Katunduyu wa nip nthawi zambiri amasungidwa mosalekeza pa ma winders apakati chifukwa chilengedwe chimapereka mphamvu yosalekeza ya mphamvu yopondereza mu nip.Pamene mpukutuwo m'mimba mwake umakhala wokulirapo, malo olumikizirana (malo) a kusiyana pakati pa chodzigudubuza chopiringizika ndi chopukutira chopondera chimakhala chokulirapo.Ngati m'lifupi mwa njanjiyi kusintha kuchokera 6 mm (0.25 inchi) pachimake mpaka 12 mm (0.5 inchi) pa mpukutu wathunthu, mphamvu ya mphepo imangochepetsedwa ndi 50%.Kuonjezera apo, pamene kukula kwa chodzigudubuza kumawonjezeka, kuchuluka kwa mpweya wotsatira pamwamba pa wodzigudubuza kumawonjezeka.Mphepo yam'malire iyi imawonjezera kuthamanga kwa hydraulic poyesa kutsegula mpata.Kuthamanga kowonjezereka kumeneku kumawonjezera taper ya clamping katundu pamene m'mimba mwake ukuwonjezeka.
Pa ma winders otambalala komanso othamanga omwe amagwiritsidwa ntchito pozungulira mipukutu yayikulu, pangakhale kofunikira kuonjezera katundu pazitsulo zomangira kuti mpweya usalowe mu mpukutuwo.Pa mkuyu.2 ikuwonetsa chowulutsira filimu chapakati chokhala ndi chopukutira chodzaza ndi mpweya chomwe chimagwiritsa ntchito zida zomangira ndi zomangira kuti ziwongolere kuuma kwa mpukutuwo.
Nthawi zina mpweya ndi mnzathu.Mafilimu ena, makamaka mafilimu "omata" omwe ali ndi vuto lofanana, amafuna kuti pakhale kusiyana.Kumangirira kwa mipata kumalola kuti mpweya wochepa ulowe mu bale kuti mupewe mavuto otsekeka pa ukonde ndipo zimathandiza kupewa kuwombana kwa intaneti pamene timizere tambirimbiri tagwiritsidwa ntchito.Kuti bwino mphepo izi kusiyana mafilimu, akumapeto ntchito ayenera kukhala yaing'ono, mosalekeza kusiyana pakati pa kuthamanga wodzigudubuza ndi kuzimata zakuthupi.Kampata kakang'ono, koyendetsedwa bwino kameneka kamathandizira kuyeza chilonda cha mpweya pa mpukutuwo ndikuwongolera ukonde molunjika pa winder kuti zisakhwinyane.
Mfundo yoyendetsera torque.Chida cha torque chopezera kuuma kwa mpukutu ndi mphamvu yomwe imapangidwa pakati pa mpukutu wopindika.Mphamvu imeneyi imafalikira kudzera mu mesh wosanjikiza pomwe imakoka kapena kukoka mkati mwa filimuyo.Monga tanena kale, torque iyi imagwiritsidwa ntchito kupanga mphamvu yapaintaneti pamayendedwe apakati.Kwa mitundu iyi ya ma winders, kuthamanga kwa intaneti ndi torque kumakhala ndi mfundo yofananira.
Kumangirira mafilimu pakatikati / pamwamba pake, zodzigudubuza zimayendetsedwa kuti zithetse vuto la intaneti monga momwe tawonetsera pa Chithunzi 3. Kuthamanga kwa intaneti komwe kumalowa mu winder sikudalira kugwedezeka kwapang'onopang'ono kopangidwa ndi torque iyi.Ndi kugwedezeka kosalekeza kwa ukonde kumalowa mu winder, kugwedezeka kwa ukonde wobwera nthawi zambiri kumakhala kosalekeza.
Mukadula ndikubwezeretsanso filimu kapena zinthu zina zokhala ndi chiŵerengero cha Poisson chachikulu, mafunde apakati / pamwamba ayenera kugwiritsidwa ntchito, m'lifupi mwake kumasiyana malinga ndi mphamvu ya intaneti.
Mukamangirira zinthu zamakanema pamakina apakati/pamtunda wokhotakhota, kugwedezeka kumayendetsedwa mozungulira.Nthawi zambiri, kukangana koyambilira koyambilira kumakhala 25-50% kuposa kupsinjika kwa intaneti yomwe ikubwera.Kenaka, pamene kukula kwa ukonde kumawonjezeka, kugwedezeka kwapang'onopang'ono kumachepetsedwa pang'onopang'ono, kufika kapena kucheperapo kusiyana ndi kupanikizika kwa intaneti yomwe ikubwera.Kukanikizana kokhotakhota kukakhala kokulirapo kuposa kuthamanga kwa intaneti komwe kukubwera, cholozera chapamwamba chimayambanso kapena kupanga torque yoyipa (braking).Pamene m'mimba mwake wa wodzigudubuza akuwonjezeka, kuyendetsa galimoto kudzapereka pang'onopang'ono mabuleki mpaka zero torque ifike;ndiye kukangana kozungulira kudzakhala kofanana ndi kupsinjika kwa intaneti.Ngati kugwedezeka kwa mphepo kumapangidwa pansi pa mphamvu ya intaneti, kuyendetsa pansi kumakoka torque yabwino kuti apereke kusiyana pakati pa mphamvu yapansi ya mphepo ndi mphamvu yapamwamba ya intaneti.
Pamene kudula ndi kupiringa filimu kapena zipangizo zina ndi mkulu Poisson a chiŵerengero, pakati / pamwamba mapiringidzo ayenera kugwiritsidwa ntchito, ndipo m'lifupi adzasintha ndi ukonde mphamvu.Ma winders apakatikati amasunga m'lifupi mwake mokhazikika chifukwa cholumikizira ukonde nthawi zonse chimayikidwa pa winder.Kuuma kwa mpukutu kudzawunikidwa kutengera torque yomwe ili pakatikati popanda zovuta ndi kutalika kwa taper.
Mmene filimu friction factor pa mapiringidzo Mafilimu a interlaminar coefficient of friction (COF) amakhudza kwambiri luso logwiritsa ntchito mfundo ya TNT kuti apeze kuuma kwa mpukutu wofunidwa popanda zolakwika.Nthawi zambiri, makanema okhala ndi mikangano ya interlaminar ya 0.2-0.7 roll bwino.Komabe, mipukutu yamakanema yopanda chilema yotsetsereka kwambiri kapena yotsika (yotsika kapena yothamanga kwambiri) nthawi zambiri imakhala ndi zovuta zomata.
Mafilimu otsika kwambiri amakhala ndi coefficient yochepa ya interlaminar kukangana (nthawi zambiri pansi pa 0.2).Makanemawa nthawi zambiri amavutika ndi kutsetsereka kwa intaneti kapena zovuta zokhotakhota panthawi yokhotakhota ndi/kapena kumasula, kapena zovuta zogwirira ntchito pa intaneti pakati pa machitidwewa.Kutsetsereka kwamkati kwa tsamba kungayambitse zolakwika monga kukwapula kwa masamba, ma denti, ma telescoping ndi/kapena kuwonongeka kwa nyenyezi.Mafilimu otsika kwambiri amafunikira kuvulazidwa mwamphamvu momwe angathere pakatikati pa torque yayikulu.Ndiye mapiringidzo mavuto kwaiye makokedwe izi pang'onopang'ono kuchepetsedwa kwa mtengo osachepera atatu kapena kanayi awiri akunja awiri pachimake, ndi chofunika mpukutu kukhazikika zimatheka ntchito achepetsa mapiringidzo mfundo.Mpweya sudzakhala mnzathu zikafika pa filimu yothamanga kwambiri.Mafilimuwa nthawi zonse ayenera kuvulazidwa ndi mphamvu yokwanira yoletsa kuti mpweya usalowe mu mpukutuwo panthawi yokhotakhota.
Kanema wotsetsereka wocheperako amakhala ndi ma coefficient apamwamba a kukangana kwa interlaminar (nthawi zambiri pamwamba pa 0.7).Mafilimuwa nthawi zambiri amavutika ndi kutsekereza komanso/kapena makwinya.Makanema okhotakhota okhala ndi mikangano yayikulu, ovality yozungulira pama liwiro otsika komanso zovuta zopumira pama liwiro othamanga kwambiri zimatha kuchitika.Mipukutu iyi imatha kukhala ndi zolakwika zokweza kapena zopindika zomwe zimadziwika kuti slip knots kapena makwinya.Mafilimu othamanga kwambiri amavulazidwa bwino kwambiri ndi kusiyana komwe kumachepetsa kusiyana pakati pa zotsatila ndi zotengera.Kufalikira kuyenera kutsimikiziridwa pafupi kwambiri ndi malo omangira.FlexSpreader imavala mipukutu yopanda mabala bwino isanapirire ndipo imathandizira kuchepetsa kuwonongeka kwapang'onopang'ono mukamayenda ndi kukangana kwakukulu.
Dziwani zambiri Nkhaniyi ikufotokoza zina mwa mpukutu zolakwika zomwe zingayambitsidwe ndi kuuma kolakwika.Buku latsopano la The Ultimate Roll and Web Defect Troubleshooting Guide limapangitsa kuti zikhale zosavuta kuzindikira ndi kukonza izi ndi zolakwika zina zapaintaneti.Bukuli ndi mtundu wasinthidwa komanso wokulitsidwa wa Roll and Web Defect Glossary yolembedwa ndi TAPPI Press.
The Enhanced Edition idalembedwa ndikusinthidwa ndi akatswiri 22 amakampani omwe ali ndi zaka zopitilira 500 pakupanga ma reel komanso mapindikidwe.Ikupezeka kudzera ku TAPPI, dinani apa.
R. Duane Smith is the Specialty Winding Manager for Davis-Standard, LLC in Fulton, New York. With over 43 years of experience in the industry, he is known for his expertise in coil handling and winding. He received two winding patents. Smith has given over 85 technical presentations and published over 30 articles in major international trade journals. Contacts: (315) 593-0312; dsmith@davis-standard.com; davis-standard.com.
Ndalama zakuthupi ndizofunika kwambiri pazachuma zambiri zotulutsidwa, kotero mapurosesa ayenera kulimbikitsidwa kuti achepetse ndalamazi.
Kafukufuku watsopano akuwonetsa momwe mtundu ndi kuchuluka kwa LDPE kusakanikirana ndi LLDPE kumakhudzira kukonza ndi mphamvu / kulimba kwa filimu yowombedwa.Zomwe zikuwonetsedwa ndi zophatikizika ndi LDPE ndi LLDPE.
Kubwezeretsa kupanga pambuyo pokonza kapena kuthetsa mavuto kumafuna khama logwirizana.Umu ndi momwe mungayanitsire mapepala ogwirira ntchito ndikuwongolera ndikuyenda mwachangu momwe mungathere.
Nthawi yotumiza: Mar-24-2023
