Akuwona wonke amafilimu adalwe alingana. Lokhu kudala izinkinga ku-winder naku-opharetha. Nansi indlela yokubhekana nazo. #ukucubungula amathiphu #izindlela ezihamba phambili
Kumawindi angaphezulu aphakathi nendawo, ukungezwani kwewebhu kulawulwa amadrayivu angaphezulu axhunywe kuma-stacker noma ama-pinch roller ukuze kuthuthukiswe ukuhlukaniswa kwewebhu nokusabalalisa iwebhu. I-winding tension ilawulwa ngokuzimele ukuze kwandiswe ukuqina kwamakhoyili.
Lapho usonga ifilimu kuwindi lokuvula elimaphakathi, ukungezwani kwewebhu kudalwa yitorque ejikayo yedrayivu emaphakathi. Ukushuba kwewebhu kuqala kusethwa ekuqineni komqulu ofunekayo bese kuncishiswa kancane kancane njengoba ifilimu iya phezulu.
Lapho usonga ifilimu kuwindi lokuvula elimaphakathi, ukungezwani kwewebhu kudalwa yitorque ejikayo yedrayivu emaphakathi. Ukushuba kwewebhu kuqala kusethwa ekuqineni komqulu ofunekayo bese kuncishiswa kancane kancane njengoba ifilimu iya phezulu.
Uma isonga imikhiqizo yefilimu endaweni emaphakathi/engaphezulu, i-pinch roller icushwa ukuze kulawulwe ukushuba kwewebhu. Isikhathi sokusonga asincikile ekucindezelekeni kwewebhu.
Uma wonke ama-web efilimu abephelele, ukukhiqiza amaroli aphelele bekungeke kube inkinga enkulu. Ngeshwa, amafilimu aphelele awekho ngenxa yokuhlukahluka kwemvelo kuma-resin kanye nama-inhomogeneities ekubunjweni kwefilimu, ukumboza, kanye nezindawo eziphrintiwe.
Unalokhu engqondweni, umsebenzi wokusebenza okusongayo uwukuqinisekisa ukuthi lezi ziphambeko azibonakali ngokubonakalayo futhi azikhuli ngesikhathi sokusonga. U-opharetha we-winder kufanele aqinisekise ukuthi inqubo yokusonga ayiphazamisi ikhwalithi yomkhiqizo. Inselele enkulu iwukusonga ifilimu yokupakisha eguquguqukayo ukuze isebenze ngaphandle komthungo enqubweni yokukhiqiza yekhasimende futhi ikhiqizele amakhasimende abo umkhiqizo wekhwalithi ephezulu.
Ukubaluleka Kokuqina Kwefilimu Ukuminyana kwefilimu, noma ukushuba kwesimo, kuyisici esibaluleke kakhulu ekunqumeni ukuthi ifilimu yinhle noma yimbi. Inxeba lokugoqa elithambile kakhulu "lizophuma nxazonke" lapho lilimele, liphathwa, noma ligcinwa. Ukuyindilinga kwamaroli kubaluleke kakhulu kukhasimende ukuze likwazi ukucubungula lawa ma-roll ngesivinini esiphezulu sokukhiqiza kuyilapho ligcina izinguquko ezincane zokungezwani.
Amanxeba amanxeba aqinile angabangela izinkinga zawo. Bangakha izinkinga zokuvimbela isici lapho izingqimba zihlangana noma zinamathela. Lapho usonga ifilimu enwetshiwe kunkambo onodonga oluncane, ukusonga umqulu oqinile kungabangela ukuba umgogodla uphuke. Lokhu kungabangela izinkinga lapho ukhipha i-shaft noma ufaka i-shaft noma i-chuck ngesikhathi sokusebenza okulandelayo kokukhulula.
Umqulu onenxeba eliqine kakhulu ungase futhi ubhebhethekise izinkinga zewebhu. Amafilimu ngokuvamile anezindawo eziphakeme kancane neziphansi engxenyeni ephambanayo yomshini lapho iwebhu iyigqinsi noma izacile. Lapho usonga i-dura mater, izindawo ezinogqinsi olukhulu ziyadlulana. Lapho amakhulu noma izinkulungwane zezingqimba zilimala, izingxenye eziphakeme zakha ama-ridge noma ama-projection emgqeni. Uma ifilimu inwetshiwe kuwo wonke lawa ma-projection, iyawohloka. Lezi zindawo zibe sezidala izinkinga ezibizwa ngokuthi “amaphakethe” efilimini njengoba umqulu uvuleka. Iwindi eliqinile elinesiliva esiwugqinsi eduze kwetshe elincanyana lingaholela ekulimaleni kwe-windrow okubizwa ngokuthi ama-waviness noma amamaki ezintambo ewindini elivulayo.
Izinguquko ezincane ebugqilini bomqulu wesilonda ngeke zibonakale uma umoya owanele ufakwa ku-roll ezingxenyeni eziphansi futhi iwebhu ayinwetshiwe ezingxenyeni eziphakeme. Kodwa-ke, ama-rolls kufanele alinyazwe aqine ngokwanele ukuze abe yindilinga futhi ahlale enjalo ngesikhathi sokuphatha nokugcinwa.
Ukwenziwa ngokungahleliwe kokuhlukahluka komshini ukuya emshinini Amanye amafilimu okupakisha aguquguqukayo, kungakhathaliseki ukuthi phakathi nenqubo yawo yokukhipha noma ngesikhathi sokumboza nokucwasa, anokwehluka kokuqina komshini kuya emshinini okukhulu kakhulu ukuthi anganemba ngaphandle kokwenza ihaba lawa maphutha. Ukuze wenze lula ukuhluka kwe-winder yomshini ukuya emshinini, iwebhu noma i-slitter rewinder kanye ne-winder iya phambili naphambili ngokuhlobene newebhu njengoba iwebhu isikwa futhi ilimala. Lokhu kunyakaza kwe-lateral komshini kubizwa ngokuthi i-oscillation.
Ukuze i-oscillate ngempumelelo, isivinini kufanele sibe phezulu ngokwanele ukushintsha ngokungahleliwe ukujiya, futhi sibe phansi ngokwanele ukuze singasonti noma sishwabene ifilimu. Umthetho wesithupha wejubane elikhulu lokuzamazama ngu-25 mm (1 intshi) ngomzuzu kuwo wonke ama-150 m/min (500 ft/min) isivinini esijikajikayo. Ngokufanelekile, isivinini sokuzungeza siyashintsha ngokulingana nesivinini sokuphenduka.
Ukuhlaziywa Kokuqina Kwewebhu Uma umqulu wefilimu yokupakisha eguquguqukayo uboshwe ngaphakathi kumqulu, kuba nokushuba kwesimo noma ingcindezi eyinsalela. Uma lokhu kucindezeleka kuba kukhulu ngesikhathi sokusonga, ukujikajika kwangaphakathi okubheke kumongo kuzobhekana nemithwalo ephezulu ecindezelayo. Lokhu yikho okudala ukukhubazeka “amaqhuqhuva” ezindaweni zasendaweni zekhoyili. Uma isonga amafilimu angewona anwebekayo nashelela kakhulu, ungqimba lwangaphakathi lungase luxege, okungase kubangele ukuthi umqulu ugoqe lapho ulimele noma unwebeke lapho ungalimele. Ukuze uvimbele lokhu, i-bobbin kufanele ilinyazwe ngokuqinile eduze komgogodla, bese iqina kancane njengoba ububanzi be-bobbin bukhula.
Lokhu ngokuvamile kubizwa ngokuthi i-rolling hardness taper. Ubukhulu be-diameter yebhali yesilonda esiqediwe, kubaluleke kakhulu iphrofayili ye-taper yebhale. Imfihlo yokwenza ukuqina kwensimbi enemicu iwukuba uqale ngesisekelo esihle esiqinile bese ukuqinisa kancane kancane kumakhoyili.
Ubukhulu be-diameter yebhali yesilonda esiqediwe, kubaluleke kakhulu iphrofayili ye-taper yebhale.
Isisekelo esihle esiqinile sidinga ukuthi ukusonga kuqale ngekhwalithi ephezulu, umgogodla ogcinwe kahle. Izinto eziningi zefilimu zilinyazwa kumongo wephepha. Umnyombo kufanele ube namandla ngokwanele ukuze umelane nengcindezi ejikajikayo edalwe ifilimu elimele ngokuqinile enkabeni. Ngokuvamile, umgogodla wephepha uyomiswa kuhhavini ukuze ube nomswakama ongu-6-8%. Uma lezi zinhlayiya zigcinwe endaweni enomswakama ophezulu, zizomunca lowo mswakamo futhi zande zibe ububanzi obukhulu. Khona-ke, ngemva kokusebenza kokusonga, lezi zinhlamvu zingomiswa zibe umswakama ophansi futhi zincishiswe ngosayizi. Uma lokhu kwenzeka, isisekelo sokuphonswa kokulimala okuqinile sizobe singasekho! Lokhu kungaholela ekushiyekeni okufana nokugoqa, ukugoqa kanye/noma ukuphuma kwamaroli lapho ephathwa noma eqaqa.
Isinyathelo esilandelayo ekutholeni isisekelo esihle sekhoyili yikuqala ukugoqa ngokuqina okukhulu okungakhonakala kukhoyili. Khona-ke, njengoba umqulu wezinto zefilimu ulimala, ukuqina komqulu kufanele kwehle ngokulinganayo. Ukwehliswa okunconyiwe kokuqina kwe-roll ku-diameter yokugcina kuvame ukuba ngu-25% kuya ku-50% wobunzima bangempela obukalwa kumongo.
Inani lokuqina kwe-roll yokuqala kanye nenani le-taper ye-tension ephendukayo ngokuvamile incike esilinganisweni sokwakha somqulu wesilonda. Isici sokukhuphuka isilinganiso se-diameter yangaphandle (OD) yengqikithi kuya kububanzi bokugcina bomqulu wesilonda. Uma umkhulu i-diameter yokugcina ye-bale (lapho isakhiwo siphezulu), kubaluleke kakhulu ukuqala ngesisekelo esihle esiqinile futhi kancane kancane uphephethe amabhala athambile. Ithebula 1 linikeza umthetho wesithupha wezinga elinconyiwe lokunciphisa ubulukhuni ngokusekelwe kusici esikhulayo.
Amathuluzi asongayo asetshenziselwa ukuqinisa iwebhu amandla ewebhu, ukucindezela phansi (amarola okucindezelayo noma ama-stacker noma ama-winder reels), kanye ne-torque ephendukayo esuka kudrayivu emaphakathi lapho usonga amawebhu efilimu phakathi nendawo/engaphezulu. Lezi zimiso ezibizwa ngokuthi i-TNT winding kuxoxwa ngazo esihlokweni kumagazini kaJanuwari 2013 wePlastiki Technology. Okulandelayo kuchaza ukuthi ungasebenzisa kanjani ngalinye lalawa mathuluzi ukuze udizayine izihloli zokuqina futhi unikeze umthetho wesithupha wamanani okuqala ukuze kutholwe abahloli bokuqina beroll abadingekayo bezinto zokupakisha ezihlukahlukene eziguquguqukayo.
Umgomo we-web winding force. Lapho usonga amafilimu anwebekayo, ukungezwani kwewebhu kuwumgomo oyinhloko wokusonta osetshenziswa ukulawula ukuqina komqulu. Ukuqina kwefilimu yeluliwe ngaphambi kokugoqa, ukuqina kwesilonda kuzoba. Inselele iwukuqinisekisa ukuthi inani lokushuba kwewebhu alibangeli ingcindezi engapheli efilimini.
Njengoba kuboniswe emkhiwaneni. 1, lapho usonga ifilimu kuwindi lokuvula elimaphakathi, ukungezwani kwewebhu kudalwa yitorque ejikayo yedrayivu emaphakathi. Ukushuba kwewebhu kuqala kusethwa ekuqineni komqulu ofunekayo bese kuncishiswa kancane kancane njengoba ifilimu iya phezulu. Amandla ewebhu akhiqizwa idrayivu emaphakathi ngokuvamile alawulwa ku-loop evaliwe ngempendulo evela kunzwa yokucindezeleka.
Inani lamandla e-blade yokuqala neyokugcina yento ethile ngokuvamile inqunywa ngokwamandla. Umthetho omuhle wesithupha webanga lamandla ewebhu u-10% kuya ku-25% wamandla aqinile wefilimu. Izindatshana eziningi ezishicilelwe zincoma inani elithile lamandla ewebhu kuzinto ezithile zewebhu. Ithebula lesi-2 libonisa ukungezwani okuphakanyisiwe kwezinto eziningi zewebhu ezisetshenziswa ekufakweni okuguquguqukayo.
Ukuze uzisonge ku-winder emaphakathi ehlanzekile, ukungezwani kokuqala kufanele kube seduze nomkhawulo ongaphezulu webanga le-tension elinconyiwe. Bese wehlisa kancane kancane ukushuba kwamajika uye ebangeni eliphansi elinconyiwe elikhonjiswe kuleli thebula.
Inani lamandla e-blade yokuqala neyokugcina yento ethile ngokuvamile inqunywa ngokwamandla.
Lapho usonga iwebhu elaminethiwe elakhiwe ngezinto eziningana ezihlukene, ukuze uthole ukungezwani okuphezulu okunconyiwe kwewebhu kwesakhiwo esine-laminated, mane ungeze ukungezwani okuphezulu kwewebhu kwento ngayinye ehlanganiswe ndawonye (imvamisa kungakhathaliseki ukuthi i-coating noma i-adhesive layer) futhi usebenzise isamba esilandelayo salokhu kungezwani. njengokushuba okuphezulu kwewebhu ye-laminate.
Isici esibalulekile ekucindezelekeni lapho i-laminating inhlanganisela yefilimu eguquguqukayo ukuthi ama-web ngamunye kufanele agxiliswe ngaphambi kokulahlwa ukuze ukuguqulwa (ukwelulwa kwewebhu ngenxa yokucindezeleka kwewebhu) kucishe kufane kuwebhu ngayinye. Uma iwebhu eyodwa idonswa ngokuphawulekayo kunamanye amawebhu, izinkinga zokugoqa noma ukuhlukanisa, ezaziwa ngokuthi “umhubhe”, zingenzeka kumawebhu aminated. Inani lokushuba kufanele libe isilinganiso se-modulus nogqinsi lwewebhu ukuvimbela ukugoqa kanye/noma umhubhe ngemva kwenqubo yokugcoba.
Umgomo wokulunywa okuvunguzayo. Uma kusongwa amafilimu angewona ama-elastic, i-clamping ne-torque yizimiso ezimazombezombe ezisetshenziswa kakhulu ukulawula ukuqina kwe-roll. I-clamp ilungisa ukuqina kwe-roll ngokususa ungqimba lomngcele womoya olandela iwebhu ku-roller yokuthatha. I-clamp iphinde idale ukungezwani kumqulu. Ukuqina kwe-clamp, i-roller ephendukayo iqina. Inkinga ngefilimu yokupakisha eguquguqukayo esontekayo iwukunikeza ingcindezi eyanele eya phansi ukuze kukhishwe umoya futhi siphothule umqulu oqinile, oqondile ngaphandle kokudala ukushuba komoya okweqile ngesikhathi sokusonga ukuvimbela umqulu ekubopheni noma ukusonteka ezindaweni eziwugqinsi ezilimaza iwebhu.
Ukulayishwa kwe-clamp akuncike kakhulu ezintweni kune-web tension futhi kungahluka kakhulu kuye ngezinto kanye nokuqina kwerola elidingekayo. Ukuvimbela ukushwabana kwefilimu yesilonda okubangelwa i-nip, umthwalo ku-nip ubuncane obudingekayo ukuze kuvinjelwe umoya ukuba uvaleleke kumqulu. Lo mthwalo we-nip uvame ukugcinwa ungaguquguquki kumawindi amaphakathi ngoba imvelo ihlinzeka ngamandla omthwalo we-nip ongashintshi wekhoni yokucindezela ku-nip. Njengoba ububanzi be-roll buba bukhulu, indawo yokuxhumana (indawo) yegebe phakathi kwe-roller ejikelezayo kanye ne-pressure roller iba nkulu. Uma ububanzi balo mzila bushintsha busuka ku-6 mm (0.25 intshi) kumongo kuya ku-12 mm (0.5 amayintshi) ku-roll egcwele, ingcindezi yomoya iyancipha ngokuzenzakalelayo ngo-50%. Ngaphezu kwalokho, njengoba ububanzi be-roller ejikelezayo bukhula, inani lomoya elilandela ubuso be-roller nalo liyakhula. Lesi singqimba somngcele somoya sandisa umfutho we-hydraulic ngomzamo wokuvula igebe. Lokhu kucindezela okwandayo kwandisa i-taper yomthwalo we-clamping njengoba ububanzi bukhula.
Kumawindi abanzi futhi asheshayo asetshenziselwa ukuvunguza amaroli amakhulu, kungase kudingeke ukuthi ukhuphule umthwalo ku-clamp evunguzayo ukuze kuvinjwe umoya ukuthi ungangeni kumqulu. Emkhiwaneni. I-2 ibonisa i-winder yefilimu emaphakathi ene-pressure roll elayishwe komoya esebenzisa i-tension ne-clamping amathuluzi ukuze ilawule ukuqina komqulu osongwayo.
Ngezinye izikhathi umoya ungumngane wethu. Amanye amafilimu, ikakhulukazi amafilimu “anamathelayo” anezinkinga zokufana, adinga ukuvala igebe. Ukujika kwegebe kuvumela inani elincane lomoya ukuthi lidonselwe ebaleni ukuvimbela izinkinga zokunamathela kuwebhu ngaphakathi kwebhala futhi kusiza ukuvimbela ukungqubuzana kwewebhu lapho kusetshenziswa imicu emikhulu. Ukuze uphephe ngempumelelo lawa mafilimu e-gap, umsebenzi wokusonga kufanele ugcine igebe elincane, elihlala njalo phakathi kwe-roller yokucindezela kanye nezinto zokugoqa. Lesi sikhala esincane, esilawulwayo sisiza ukumitha inxeba lomoya ku-roll futhi iqondise iwebhu iqonde ku-winder ukuvimbela ukushwabana.
Isimiso sokugoqa i-torque. Ithuluzi le-torque yokuthola ukuqina kwe-roll amandla athuthukiswe phakathi nendawo yomqulu osongwayo. La mandla adluliselwa ngongqimba lwemeshi lapho edonsa khona noma edonsa ukugoqa kwangaphakathi kwefilimu. Njengoba kushiwo ngaphambili, le torque isetshenziselwa ukudala amandla ewebhu kumajika amaphakathi. Kulezi zinhlobo zama-winders, ukungezwani kwewebhu kanye ne-torque kunomgomo ofanayo wokugoqa.
Uma isonga imikhiqizo yefilimu endaweni emaphakathi/engaphezulu, amarola ancishiswayo ayashukunyiswa ukuze alawule ukungezwani kwewebhu njengoba kukhonjisiwe kuMfanekiso 3. Ukushuba kwesimo sewebhu okungena kwi-winder akuxhomekile ekuqineni kokusonga okukhiqizwa yile torque. Ngokushuba okungapheli kwewebhu kungena ku-winder, ukushuba kwewebhu engenayo ngokuvamile kugcinwa njalo.
Lapho usikwa futhi ubuyisela emuva ifilimu noma ezinye izinto ezinezinga eliphezulu le-Poisson, kufanele kusetshenziswe ukujikajika okumaphakathi/kobuso, ububanzi buzohluka kuye ngamandla ewebhu.
Uma usonga imikhiqizo yefilimu emshinini wokusonta omaphakathi/ongaphezulu, ukushuba kwesimo kulawulwa ngeluphu evulekile. Imvamisa, ukushuba kwamajika kokuqala kuba ku-25-50% okukhulu kunokushuba kwewebhu engenayo. Khona-ke, njengoba ububanzi bewebhu bukhula, ukungezwani okusongayo kuyancishiswa kancane kancane, kufinyelele noma kuncane nakakhulu kunokushuba kwewebhu engenayo. Uma i-tension emazombezombe inkulu kune-tension yewebhu engenayo, idrayivu ye-roller surface drive ikhiqiza kabusha noma ikhiqize i-torque engeyinhle (ibhuleki). Njengoba ububanzi be-winding roller bukhula, idrayivu yokuhamba izohlinzeka ngokubhuleka kancane kancane kuze kufinyelelwe i-torque engu-zero; khona-ke ukungezwani okumazombezombe kuzolingana nokushuba kwewebhu. Uma ukushuba komoya kuhlelwe ngaphansi kwamandla ewebhu, idrayivu yaphansi izodonsa itorque ephozithivu ukuze kunxeshezelwe umehluko phakathi kokushuba komoya ophansi namandla ewebhu aphezulu.
Uma ukusika nokusonta ifilimu noma ezinye izinto ezinezinga eliphezulu le-Poisson, kufanele kusetshenziswe ukujikajika okuphakathi/kwendawo, futhi ububanzi buzoshintsha ngamandla ewebhu. Amawindi angaphezulu aphakathi nendawo agcina ububanzi bomugqa oboshiwe obuqhubekayo ngenxa yokuthi ukushuba kwewebhu okungashintshi kusetshenziswa kwiwinda. Ukuqina komqulu kuzohlaziywa ngokusekelwe ku-torque esikhungweni ngaphandle kwezinkinga ngobubanzi be-taper.
Umthelela wesici sokushayisana kwefilimu ekujikeni Izakhiwo zefilimu ze-interlaminar of friction (COF) zinomthelela omkhulu ekhonweni lokusebenzisa isimiso se-TNT ukuze kutholwe ukuqina kweroli okufunayo ngaphandle kokulimala kwamaroli. Ngokuvamile, amafilimu ane-interlaminar friction coefficient engu-0.2–0.7 agingqa kahle. Kodwa-ke, amaroli efilimu angenasici ajikajikayo ashelela phezulu noma aphansi (i-coefficient ephansi noma ephezulu yokungqubuzana) ngokuvamile aveza izinkinga ezimazombezombe.
Amafilimu ashelelayo aphezulu ane-coefficient ephansi yokungqubuzana kwe-interlaminar (imvamisa ibe ngaphansi kuka-0.2). Lawa mafilimu avame ukuhlushwa ukushelela kwewebhu kwangaphakathi noma izinkinga ezisongayo ngesikhathi sokusonga kanye/noma sokuhlehlisa okulandelayo, noma izinkinga zokuphatha iwebhu phakathi kwalokhu kusebenza. Lokhu kushelela kwangaphakathi kwe-blade kungabangela ukukhubazeka okufana nokuklwebheka kwe-blade, ama-dent, i-telescoping kanye/noma ama-roller enkanyezi. Amafilimu e-low friction adinga ukulinyazwa ngokuqinile ngangokunokwenzeka kumongo we-torque ephezulu. Khona-ke ukungezwani okumazombezombe okukhiqizwa yile torque kuyancishiswa kancane kancane kube inani eliphansi eliphindwe kathathu noma kane ububanzi bangaphandle bomgogodla, futhi ukuqina kwe-roll edingekayo kufinyelelwa kusetshenziswa isimiso sokugoqa se-clamp. Umoya awusoze waba umngane wethu uma kukhulunywa ngefilimu eshelelayo ephezulu. Lawa mafilimu kumele ahlale elinyazwe ngamandla anele okubamba ukuze kuvinjwe umoya ukuthi ungangeni emgqeni ngesikhathi sokusongwa.
Ifilimu eshelelayo ephansi ine-coefficient ephezulu yokungqubuzana kwe-interlaminar (imvamisa ibe ngaphezu kuka-0.7). Lawa mafilimu avame ukuhlushwa yizinkinga zokuvimba kanye/noma zokushwabana. Uma amafilimu asongayo ane-coefficient ephezulu yokungqubuzana, i-ovality eginqikayo ngesivinini esimazombezombe esiphansi kanye nezinkinga ezibhampayo ngesivinini esimazombezombe esikhulu. Lawa ma-rolls kungenzeka abe neziphambeko eziphakanyisiwe noma ezinamagagasi aziwa ngokuthi ama-slip knots noma imibimbi eshelelayo. Amafilimu ama-high friction angcono kakhulu anegebe elinciphisa igebe phakathi kwama-rolls alandelayo nama-take-up. Ukusabalalisa kufanele kuqinisekiswe ngokuseduze ngangokunokwenzeka endaweni yokugoqa. I-FlexSpreader igqoka ama-rollers amanxeba alimele kahle ngaphambi kokusonteka futhi isiza ekunciphiseni amaphutha e-slip creasing lapho isongwa ngokungqubuzana okuphezulu.
Funda kabanzi Lesi sihloko sichaza ezinye zezinkinga ezingase zibangelwe ukuqina okungalungile. Umhlahlandlela omusha Wokuxazulula Inkinga ye-Ultimate Roll kanye ne-Web Defect wenza kube lula nakakhulu ukuhlonza nokulungisa lezi kanye nezinye izinkinga ze-roll newebhu. Leli bhuku liyinguqulo ebuyekeziwe nenwetshiwe ye-Roll ne-Web Defect Glossary ethengiswa kakhulu yi-TAPPI Press.
Ushicilelo Oluthuthukisiwe lwabhalwa futhi lwahlelwa ochwepheshe bomkhakha abangu-22 abanolwazi lweminyaka engaphezu kwengu-500 ku-reel nokusonta. Itholakala nge-TAPPI, chofoza lapha.
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.
Izindleko zezinto ezibonakalayo ziyisici esikhulu sezindleko zezimpahla eziningi ezikhishwe, ngakho-ke amaphrosesa kufanele akhuthazwe ukwehlisa lezi zindleko.
Ucwaningo olusha lubonisa ukuthi uhlobo nenani le-LDPE elihlanganiswe ne-LLDPE liwuthinta kanjani ukucubungula namandla/ukuqina kwezakhiwo zefilimu ephephethwa umoya. Idatha ebonisiwe ingeyezingxube ezithuthukiswe nge-LDPE ne-LLDPE.
Ukubuyisela ukukhiqiza ngemva kokulungisa noma ukuxazulula inkinga kudinga umzamo ohlangene. Nansi indlela yokuqondanisa amashidi okusebenzela nokuwenza asebenze ngokushesha okukhulu.
Isikhathi sokuthumela: Mar-24-2023
