Enqubweni yokukhiqiza yendwangu engalukiwe ye-spunbond, izici ezihlukahlukene zingathinta izakhiwo ezibonakalayo zomkhiqizo. Ukuhlaziya ubudlelwano phakathi kwalezi zici nokusebenza komkhiqizo kungasiza ukulawula kahle izimo zenqubo futhi kutholwe imikhiqizo yendwangu engalukiwe yekhwalithi ephezulu nesebenza kabanzi ye-polypropylene spunbond. Lapha, sizohlaziya kafushane izici eziyinhloko ezithonya izici ezibonakalayo zezindwangu ezingalukiwe ze-spunbond futhi sabelane ngazo nawo wonke umuntu.
Ncibilikisa inkomba kanye nokusatshalaliswa kwesisindo samangqamuzana ezingcezu ze-polypropylene
Izinkomba eziyinhloko zekhwalithi yezingcezu ze-polypropylene isisindo samangqamuzana, ukusatshalaliswa kwesisindo samangqamuzana, isotropy, inkomba yokuncibilika, kanye nokuqukethwe komlotha. Isisindo samangqamuzana ama-chip chips e-PP asetshenziselwa ukuphotha siphakathi kuka-100000 no-250000, kodwa umkhuba ubonise ukuthi izakhiwo ze-rheological zokuncibilika zingcono kakhulu lapho isisindo samangqamuzana e-polypropylene sizungeze i-120000, futhi isivinini esiphezulu esivunyelwe sokuphotha siphezulu. Inkomba yokuncibilika iyipharamitha ekhombisa izici ze-rheological zokuncibilika, futhi inkomba yokuncibilika kwezingcezu ze-polypropylene ezisetshenziswa ku-spunbond ngokuvamile iphakathi kuka-10 no-50. Ngesikhathi sokuphotha kuwebhu, i-filament ithola kuphela uhlaka olulodwa lokugeleza komoya, futhi isilinganiso sokusalungiswa se-filament sinqunyelwe izakhiwo ze-rheological zokuncibilika. Isisindo samangqamuzana sikhulu, okungukuthi, inkomba encane yokuncibilika, ukugeleza kubi nakakhulu, kanye nenani elincane lokusalungiswa elitholwe yi-filament. Ngaphansi kwezimo ezifanayo zokuncibilika kwe-ncibilika ku-nozzle, usayizi wefayibha womcu otholiwe nawo mkhulu, okuholela ekuzizweleni kwesandla okuqinile kwezindwangu ezingalukiwe ze-spunbond. Uma inkomba yokuncibilika iphezulu, i-viscosity yokuncibilika iyancipha, izakhiwo ze-rheological zinhle, ukumelana nokwelula kunciphisa, futhi ngaphansi kwezimo ezifanayo zokwelula, isilinganiso sokwelula siyakhula. Njengoba i-orientation degree yama-macromolecules ikhula, amandla okuphuka kwendwangu ye-spunbond nonwoven nawo azokhula, futhi ubucwebe bemicu buzokwehla, okuholela ekuzizweleni kwesandla esithambile sendwangu. Ngaphansi kwenqubo efanayo, iphezulu inkomba yokuncibilika kwe-polypropylene, incane ukucoleka kwayo kanye namandla ayo okuphuka.
Ukusatshalaliswa kwesisindo sengqamuzana kuvame ukukalwa ngesilinganiso sesisindo esimaphakathi semolekyuli (Mw) kuya kunombolo yesisindo sengqamuzana (Mn) se-polymer (Mw/Mn), eyaziwa njengevelu yokusabalalisa isisindo semolekyuli. I-value yokusabalalisa isisindo samangqamuzana amancane, izici ze-rheological zokuncibilika zizinzile, futhi inqubo yokuphotha izinzile, esiza ekuthuthukiseni isivinini sokuphotha. Iphinde ibe nokunwebeka okuncibilikisiwe okuphansi kanye ne-viscosity eqinile, enganciphisa ingcindezi yokuphotha, yenze i-PP ibe lula ukwelula futhi ibe ngcono, futhi ithole imicu ecolekile. Ngaphezu kwalokho, ukufana kwenethiwekhi kuhle, nokuzwakala kahle kwesandla nokufana.
Izinga lokushisa lokuphotha
Ukusethwa kwezinga lokushisa lokuphotha kuncike kunkomba yokuncibilika kwezinto ezingavuthiwe kanye nezidingo zezakhiwo ezibonakalayo zomkhiqizo. Uma iphezulu inkomba yokuncibilika kwezinto ezingavuthiwe, izinga lokushisa lokuphotha liya phezulu, futhi ngokuphambene nalokho. Izinga lokushisa elijikelezayo lihlobene ngokuqondile ne-viscosity yokuncibilika, futhi izinga lokushisa liphansi. I-viscosity yokuncibilika iphezulu, okwenza ukuphotha kube nzima futhi kujwayele ukukhiqiza imicu ephukile, eqinile noma eqinile, ethinta ikhwalithi yomkhiqizo. Ngakho-ke, ukuze unciphise i-viscosity yokuncibilika futhi uthuthukise izakhiwo zayo ze-rheological, indlela yokwandisa izinga lokushisa ngokuvamile iyamukelwa. Izinga lokushisa elijikelezayo linomthelela omkhulu esakhiweni nasezindaweni zemicu. Ukunciphisa izinga lokushisa elijikelezayo, ukuphakama kwe-viscosity elula yokuncibilika, kukhulu ukumelana nokwelula, futhi kunzima ukwelula i-filament. Ukuze uthole imicu yokucoleka okufanayo, isivinini sokugeleza komoya esinwebekayo sidinga ukuba phezulu uma kuqhathaniswa namazinga okushisa aphansi. Ngakho-ke, ngaphansi kwezimo zenqubo efanayo, lapho izinga lokushisa elijikelezayo liphansi, izintambo zinzima ukwelula. I-fiber inobuhle obuphezulu kanye ne-orientation ephansi ye-molecular, ebonakala ezindwangu ezingezona eziboshwe nge-spunbond ezinamandla aphansi okuphuka, ukuphakama okuphezulu ngesikhathi sokuphumula, kanye nokuzwakala kwesandla esiqinile; Uma izinga lokushisa lokuphotha liphezulu, ukunwebeka kwefayibha kuba ngcono, ukucoleka kwefayibha kuncane, futhi umumo wamamolekyuli uphakeme. Lokhu kubonakala emandleni aphukayo aphezulu, ubude obuncane obuphukayo, kanye nomuzwa wesandla esithambile wezindwangu ezingalukiwe ze-spunbond. Kodwa-ke, kufanele kuqashelwe ukuthi ngaphansi kwezimo ezithile zokupholisa, uma izinga lokushisa lokuphotha liphezulu kakhulu, i-filament ephumela ngeke iphole ngokwanele ngesikhathi esifushane, futhi ezinye izintambo zingase ziphule ngesikhathi senqubo yokwelula, engase yakhe amaphutha. Ekukhiqizeni kwangempela, izinga lokushisa lokuphotha kufanele likhethwe phakathi kuka-220-230 ℃.
Ukupholisa ukwakha izimo
Izinga lokupholisa le-filament linomthelela omkhulu ezimpahleni ezibonakalayo zendwangu engalukiwe ye-spunbond phakathi nenqubo yokubunjwa. Uma i-polypropylene encibilikisiwe ingapholiswa ngokushesha nangokufanayo ngemva kokuphuma ku-spinneret, izinga layo lokucwebezela lihamba kancane futhi icrystallinity iphansi. Isakhiwo se-fibre esiwumphumela siyisakhiwo sekristalu esiwuketshezi esine-disc, esingase sifinyelele isilinganiso esikhulu sokwelula ngesikhathi sokwelula. I-orientation yamaketanga e-molecular ingcono, engaqhubekisela phambili i-crystallinity, ithuthukise amandla e-fiber, futhi inciphise ukuphakama kwayo. Lokhu kubonakaliswa ezindwangu ezingezona ezilukiwe ezine-spunbond ezinamandla aphezulu okuphuka kanye nobude obuphansi; Uma ipholile kancane, imicu ewumphumela inesakhiwo se-crystal monoclinic esizinzile, esingahambisani nokwelula i-fiber. Lokhu kubonakala ezindwangu ezingalukiwe ezine-spunbond ezinamandla aphansi okuphuka kanye nobude obukhulu. Ngakho-ke, enqubweni yokubumba, ukukhulisa ivolumu yomoya opholile kanye nokunciphisa izinga lokushisa lekamelo lokuphotha kuvame ukusetshenziselwa ukuthuthukisa amandla okuphuka nokunciphisa ubude bezindwangu ezingalukiwe ze-spunbond. Ngaphezu kwalokho, ibanga lokupholisa le-filament lihlobene eduze nokusebenza kwayo. Ekukhiqizeni izindwangu ezingalukiwe ze-spunbond, ibanga lokupholisa ngokuvamile likhethwa phakathi kuka-50-60cm.
Izimo zokudweba
Ukuma kwamaketanga amangqamuzana emicu kasilika kuyisici esibalulekile esithinta amandla aqinile kanye nobude lapho kugqashuka imicu eyodwa. Uma izinga lokuma liba likhulu, i-filament eyodwa iqina futhi iba yincane ubude ngesikhathi sekhefu. Izinga lokuma lingamelwa yi-birefringence ye-filament, futhi uma likhulu inani, liba phezulu izinga lokuma. Imicu eyinhloko eyakhiwe lapho i-polypropylene incibilika iphuma ku-spinneret inobukhristali obuphansi nokuma kwayo, i-fiber brittleness ephezulu, ukuphuka kalula, kanye nobude obuphawulekayo ngesikhathi sekhefu. Ukuze ushintshe izici zemicu, kufanele zelulwe ngamazinga ahlukahlukene njengoba kudingeka ngaphambi kokwenza iwebhu. Kuukukhiqizwa kwe-spunbond, amandla okuqina kwefayibha ngokuyinhloko ancike kusayizi womoya opholile kanye nomoya wokumunca. Uma umkhulu umthamo womoya wokupholisa nokumunca, isivinini sokunwebeka siyashesha, futhi imicu izokwelulwa ngokugcwele. Ukuma kwe-molecular kuzokwanda, ubuhle buyoba bungcono, amandla azokhula, futhi ukuphakama ngesikhathi sokuphumula kuzokwehla. Ngesivinini sokuphotha esingu-4000m/min, i-polypropylene filament ifinyelela inani layo lokugcwaliswa kwe-birefringence, kodwa ohlelweni lokunwebeka lokugeleza komoya lokuzungeza kuwebhu, isivinini sangempela somucu ngokuvamile sinzima ukweqa i-3000m/min. Ngakho-ke, ezimweni lapho izidingo eziqinile ziphezulu, isivinini sokwelula singandiswa ngesibindi. Kodwa-ke, ngaphansi kwesimo somthamo womoya opholisa njalo, uma umthamo womoya wokumunca mkhulu kakhulu futhi ukupholisa kwe-filament akwanele, imicu ijwayele ukuphuka endaweni ye-extrusion of the die, okwenza umonakalo ekhanda lomjovo futhi ithinte ukukhiqizwa kanye nekhwalithi yomkhiqizo. Ngakho-ke, ukulungiswa okufanele kufanele kwenziwe ekukhiqizeni kwangempela.
Izici ezingokomzimba zezindwangu ezingezona ezilukiwe ze-spunbond azihlobene kuphela nezakhiwo zemicu, kodwa futhi nesakhiwo senethiwekhi semicu. Uma imicu icolekile, izinga lokuphazamiseka ekuhleleni imicu lapho ubeka inetha liphezulu, i-net ifana kakhulu, kuba nemicu eyengeziwe endaweni yeyunithi ngayinye, iba yincane isilinganiso samandla we-longitudinal kanye nesiphambano senetha, futhi kukhulu amandla okuphuka. Ngakho-ke kungenzeka ukuthuthukisa ukufana kwemikhiqizo yendwangu engalukiwe ye-spunbond futhi uthuthukise amandla ayo okuphuka ngokwandisa umthamo womoya wokumunca. Kodwa-ke, uma umthamo womoya wokumunca mkhulu kakhulu, kulula ukubangela ukuphuka kwentambo, futhi ukwelula kunamandla kakhulu. I-orientation ye-polymer ijwayele ukuphelela, futhi i-crystallinity ye-polymer iphezulu kakhulu, okuzonciphisa amandla omthelela kanye nokwelula ngesikhathi sekhefu, kwandise ukuqina, futhi ngaleyo ndlela kuholele ekwehleni kwamandla nokwelula kwendwangu engalukiwe. Ngokusekelwe kulokhu, kungabonakala ukuthi amandla nokwelulwa kwezindwangu ezingalukiwe ze-spunbond ziyakhula futhi zehle njalo ngokwanda komthamo womoya wokumunca. Ekukhiqizeni kwangempela, kuyadingeka ukulungisa inqubo ngokufanele ngokwezidingo kanye nesimo sangempela ukuze kutholwe imikhiqizo yekhwalithi ephezulu.
Izinga lokushisa elishisayo
I-fiber web eyakhiwe imicu enwebekayo isesimweni esixegayo futhi kufanele ishise futhi iboshwe ukuze ibe yindwangu. I-hot rolling bonding yinqubo lapho amafayibha akuwebhu athambeka kancane futhi ancibilikiswe amaroli ashisayo anengcindezi ethile nezinga lokushisa, futhi imicu ihlanganiswe ndawonye ukuze yakhe indwangu. Okubalulekile ukulawula izinga lokushisa nokucindezela kahle. Umsebenzi wokushisa uwukuthambisa nokuncibilikisa imicu. Ingxenye yemicu ethambile futhi encibilikisiwe inquma izici ezibonakalayo zeizindwangu ezingalukiwe ze-spunbond. Emazingeni okushisa aphansi kakhulu, ingxenye encane kuphela yemicu enesisindo samangqamuzana ephansi iyathamba futhi inyibilike, futhi kunemicu embalwa kakhulu ehlanganiswe ndawonye ngaphansi kwengcindezi. Imicu kuwebhu yefiber ijwayele ukushelela, futhi izindwangu ezingalukiwe zinamandla aphansi okuphuka kodwa amade kakhulu. Umkhiqizo uzwakala uthambile kodwa uthambekele ekuxubeni; Njengoba izinga lokushisa elishisayo likhuphuka kancane kancane, inani lemicu ethambile futhi encibilikisiwe liyakhula, isibopho se-fiber web siyaqina, imicu mancane amathuba okuthi ishelele, amandla okuphuka kwendwangu engalukiwe ayanda, futhi ubude busekukhulu uma kuqhathaniswa. Ngaphezu kwalokho, ngenxa yokuhlobana okuqinile phakathi kwemicu, ukunwetshwa kuyanda; Lapho izinga lokushisa likhuphuka kakhulu, imicu eminingi endaweni yokucindezela iyancibilika, futhi imicu iba yizigaxa ezincibilikayo, iqala ukuba brittle. Ngalesi sikhathi, amandla endwangu engalukiwe aqala ukwehla, futhi ukunwetshwa nakho kuncipha kakhulu. Ukuzwakala kwesandla kuqinile kakhulu futhi kushwabene, namandla okudabula nawo aphansi. Ngaphezu kwalokho, imikhiqizo ehlukene inesisindo nobukhulu obuhlukene, futhi izinga lokushisa lomshini wokugaya oshisayo nalo liyahlukahluka. Emikhiqizweni emincane, kunemicu embalwa endaweni yokushisa eshisayo, futhi ukushisa okuncane kuyadingeka ukuze kuthambise futhi kuncibilike, ngakho izinga lokushisa elidingekayo liphansi. Ngokuhambisanayo, emikhiqizweni ewugqinsi, imfuneko yezinga lokushisa elishisayo iphezulu.
I-Hot rolling pressure
Enqubweni yokuhlanganisa okushisayo, indima yokucindezela komugqa wokugaya okushisayo ukuhlanganisa i-fiber web, okubangela ukuthi imicu kuwebhu ithole ukushisa okuthile kokuguquguquka futhi isebenzise ngokugcwele umthelela wokuqhuba ukushisa ngesikhathi senqubo yokugoqa okushisayo, okwenza imicu ethambile futhi encibilikisiwe ihlanganiswe ngokuqinile, okwandisa amandla okunamathela phakathi kwemicu, nokwenza kube nzima emiculweni. Lapho ingcindezi yomugqa ogoqayo iphansi ngokuqhathaniswa, ukuminyana kwefiber compaction endaweni yokucindezela kuwebhu yefayibha kubi, amandla okubopha i-fibre awekho phezulu, amandla okubamba phakathi kwemicu aphansi, futhi imicu kulula ukushelela. Ngalesi sikhathi, umuzwa wesandla wendwangu engalukiwe ye-spunbond uthambile uma kuqhathaniswa, ukuphakama kokuphuka kukhulu, futhi amandla okuphuka aphansi; Ngokuphambene, lapho ingcindezi yomugqa iphakeme uma kuqhathaniswa, indwangu engalukiwe ye-spunbond ewumphumela iba nomuzwa oqinile wesandla, ubude obuphansi ngesikhathi sekhefu, kodwa amandla amakhulu okuphuka. Kodwa-ke, lapho ingcindezi yolayini yesigayo esishisayo iphezulu kakhulu, i-polymer ethambile futhi encibilikisiwe endaweni eshisayo ye-fiber web kunzima ukugeleza nokusabalalisa, okunciphisa ukungezwani kokuphuka kwendwangu engalukiwe. Ngaphezu kwalokho, ukumiswa kokucindezela komugqa nakho kuhlobene eduze nesisindo nokuqina kwendwangu engalukiwe. Ekukhiqizeni, ukukhetha okufanele kufanele kwenziwe ngokwezidingo ukuze kukhiqizwe imikhiqizo ehlangabezana nezidingo zokusebenza.
Kafushane, izakhiwo ezingokomzimba nezokusebenza zeIndwangu engalukiwe ye-polypropylene spunbondimikhiqizo ayinqunywa isici esisodwa, kodwa ngemiphumela ehlangene yezinto ezihlukahlukene. Ekukhiqizeni kwangempela, imingcele yenqubo efanele kufanele ikhethwe ngokuvumelana nezidingo zangempela kanye nezimo zokukhiqiza ukuze kukhiqizwe imikhiqizo yendwangu engeyona eyelukiwe ye-spunbond engahlangabezana nezidingo ezihlukahlukene. Ukwengeza, ukuphathwa okuqinile okujwayelekile komugqa wokukhiqiza, ukugcinwa ngokucophelela kwemishini, kanye nokwenza ngcono ikhwalithi nekhono labaqhubi nakho kuyizici ezibalulekile ekuthuthukiseni ikhwalithi yomkhiqizo.
I-Dongguan Liansheng Non woven Technology Co., Ltd.yasungulwa ngoMeyi 2020. Kuyibhizinisi elikhulu lokukhiqiza indwangu engalukiwe ehlanganisa ucwaningo nentuthuko, ukukhiqiza, nokudayiswa. Ingakwazi ukukhiqiza imibala ehlukahlukene ye-PP spunbond izindwangu ezingalukiwe ezinobubanzi obungaphansi kwamamitha angu-3.2 ukusuka ku-9 amagremu kuya ku-300 amagremu.
Isikhathi sokuthumela: Nov-29-2024