Ulusi wosalukidwa wosungunuka
Njira yosungunuka ndi imodzi mwa njira zosungunuka ndi imodzi mwa njira zosungunuka, zomwe zimatchedwanso screw extruder extrusion ya polymer extrusion kudzera mu mpweya wotentha kwambiri kapena njira zina zosungunula madontho ang'onoang'ono komanso kupangika kwa ulusi wabwino kwambiri, kenako nkusonkhanitsidwa mu netiweki yozungulira kapena nsalu yotchinga yopangidwa pa netiweki ya ulusi, zomwe zimapangitsa kuti kukhuthala kukhale kolimba chifukwa ulusi wosungunuka suli woluka.
Mfundo yopangira ulusi wa fusion-jet
1. Kufanana ndi kusiyana kwa njira yolumikizidwa ndi spunbonded
Njira yolumikizidwa ndi zomangira
Imadziwikanso kuti njira yozungulira mwachindunji mu nsalu, ndi kugwiritsa ntchito njira zozungulira zosungunuka monga gawo la polima mwa kusungunula kupota ndi kupanga ulusi wopitilira wa netiweki, kenako ndi kumangirira, kumaliza ndi zinthu zina zopangidwa.
Chofala
Polima iyenera kutulutsidwa ndi dzenje la spinneret mu mkhalidwe wosungunuka
(2) maukonde a ulusi akhoza kukhala ogwirizana ndi kutentha (kulumikizana pamwamba kapena kugwirizana kwa mfundo) kapena ogwirizana nawo okha kukhala ogwirizana ndi nsalu yolimba yopanda nsalu
Kusiyana kwa B
Mu njira ya spunbond: mpweya wozizira mwadzidzidzi umaziziritsidwa, nthawi yomweyo, umatambasulidwa, kupanga ulusi wopitilira, ndikufalikira mu nsalu yotchinga ukonde.
Njira yosungunula: kupopera mpweya wotentha mwachangu, mwa kutambasula kwambiri, kupanga ulusi waufupi kwambiri, pa liwiro lalikulu kwambiri kuti ulumphe mu nsalu ya ukonde kapena kupopera ukonde kuti upange netiweki ya ulusi
(2) njira ya spunbond: njira zolimbikitsira maukonde a fiber, kuwonjezera pa maukonde otentha, komanso kutenga acupuncture, madzi, maukonde a mankhwala ndi njira zina.
Njira yothira madzi: imadalira kwambiri kutentha kapena kudzigwirizanitsa
2. Njira yaukadaulo yachikhalidwe
Kudyetsa polima → kusungunuka kwa kusungunuka → kupangika kwa ulusi → kuziziritsa kwa ulusi → kupanga mauna → kulumikiza (mauna okhazikika) → kuzunguliza kwa m'mphepete mwachitsulo → kumaliza pambuyo pomaliza kapena kumaliza kwapadera
Chakudya cha polima - polima nthawi zambiri amapangidwa m'zidutswa zazing'ono zozungulira, zopyapyala, zothiridwa mu chidebe kapena hopper, ndikuyikidwa mu screw extruder
Kusungunuka kwa chitsulo -- kumapeto kwa chakudya cha screw extruder, chidutswa cha polymer chiyenera kusakanizidwa ndi stabilizer, whitening agent ndi zina zowonjezera, color masterbatch ndi zinthu zina zofunika zopangira, pambuyo posakaniza bwino mu screw extruder, ndikutenthedwa kuti chisungunuke, ndipo pamapeto pake kusungunuka kudzaperekedwa mu spinneret ndi metering pump kudzera mu fyuluta. Mu ndondomeko yosungunuka ndi kupopera, general extruder imachepetsanso kulemera kwa mamolekyu a polymer chifukwa cha ntchito yake yocheka ndi kutentha kwake.
Kupanga ulusi - kusungunuka koyera kosefedwa kumadutsa mu dongosolo logawa ndipo kumaperekedwa mofanana mu gulu lililonse la ma spinnerets kuti apange kuchuluka kofanana kwa extrusion pa spinneret iliyonse. Spinneret ya ulusi wothira fusion ndi yosiyana ndi njira zina zopota, mabowo a spinneret ayenera kukonzedwa molunjika, mbali zakumtunda ndi zakumunsi zomwe zili ndi mabowo a jet.
Kuziziritsa kwa ulusi - mpweya wambiri wotentha m'chipinda umayamwa mbali zonse ziwiri za spinneret ndikusakanikirana ndi mpweya wotentha wokhala ndi ulusi wochepa kuti uzizire. Ulusi wosungunukawo umazizira ndi kuuma.
Ukonde - popanga ulusi wosaluka womwe umapangidwa ndi fusion-blown nonwovens, spinnerets zimatha kuyikidwa mopingasa kapena mopingasa. Ngati zitayikidwa mopingasa, microfiber imapopedwa pa ng'oma yozungulira kuti ipange ukonde. Ngati zitayikidwa mopingasa, ulusi umagwera pa chophimba choyenda mopingasa kuti apange ukonde.
Chomatira (network yokhazikika) - chomatira chodzipangira chomwe chatchulidwa pamwambapa, pazifukwa zina nsalu yothira yosungunuka ndi yokwanira, monga: zofunikira za netiweki ya ulusi zimakhala ndi kapangidwe kofewa, mpweya wabwino wosunga kapena chiŵerengero chopanda mpweya. Ndipo pazinthu zina zambiri, kukhala ndi chomatira chokha sikokwanira, kumafunikirabe chomatira chotentha, chomatira chopangidwa ndi ultrasonic kapena njira zina zowonjezera. Guluu wotentha
3. Makhalidwe a njira ya zinthu zopanda ulusi wosungunuka wa melt-jet
(1) njira yochepa, kupanga bwino kwambiri;
Ulusi wake ndi wabwino kwambiri, kufanana kwa maukonde a ulusi ndi wabwino, wofewa, wosefera, wopha mabakiteriya, kulowetsedwa kwa madzi kuli ndi ubwino waukulu;
Kuyang'ana kwa ulusi ndi kofooka, mphamvu ya netiweki ya ulusi ndi yochepa;
Izi zitenga mphamvu zambiri.
Magawo akuluakulu a njira yopangira njira yosungunula - kupopera
1. Chiyerekezo cha kusungunuka (MFI)
Mphamvu ndi kutalika kwa nsalu yopopera ndi fusion kunachepa pamene MFI inawonjezeka. Chifukwa chake, MFI ya zinthu zopangira imafunika kukhala yokwera kwambiri momwe zingathere kuti madzi osungunuka pang'ono azitha kuyenda bwino mu njira yotentha ya mpweya.
2. Kuthamanga kwa mpweya wotentha
Pansi pa kutentha komweko, liwiro la screw, mtunda wolandila ndi zina:
Liwiro la mpweya wotentha ↑ → kukula kwa ulusi ↓ → Zosaluka zimamveka kuyambira zolimba mpaka zofewa, zomangira za ulusi zimawonjezeka, netiweki ya ulusi imakhuthala, yosalala, mphamvu yawonjezeka
Koma liwiro la mpweya ndi lalikulu kwambiri, maluwa owuluka mosavuta, zimakhudza kwambiri mawonekedwe a nsalu.
3. Ngodya ya jekeseni ya mpweya wotentha
Zimakhudza kwambiri mphamvu yokoka ndi mawonekedwe a ulusi
Makhalidwe ndi kagwiritsidwe ntchito ka ulusi wosungunuka (nsalu yopanda ulusi)
1. Zipangizo zosefera
Imagwiritsa ntchito makamaka kapangidwe kake ka ulusi wabwino kwambiri, womwe ndi gawo lake loyamba komanso lalikulu kwambiri logwiritsidwa ntchito. Kufunika kwa zipangizo zatsopano zosefera ndiko komwe kumayendetsa kwambiri pakupanga ulusi wopanda ulusi wosungunuka.
Palibe ubweya waufupi wa fyuluta womwe umagwera mu mpweya woyeretsedwa kapena madzi akasefedwa ndi nsalu yopopera yosungunuka.
Pakadali pano, matani opitilira 20,000 a zinthu zosefera za melt-jet amagwiritsidwa ntchito padziko lonse lapansi chaka chilichonse, 65% mwa izi zimagwiritsidwa ntchito kusefera madzi, monga: kusefera zakumwa ndi ukhondo wa chakudya, kusefera madzi, kusefera zitsulo zamtengo wapatali, utoto ndi zokutira ndi zinthu zina zamankhwala zosefera; 35% imagwiritsidwa ntchito kusefera mpweya, monga: kusefera mpweya woziziritsa m'nyumba, kusefera mpweya ndi madzi, kusefera chipinda choyeretsera.
2. Zipangizo zachipatala
Pakadali pano, ndi gawo lachiwiri lalikulu kwambiri logwiritsira ntchito nsalu yopopera yosungunuka.
M'derali, mlingo waukulu kwambiri ndi bandeji yopangira opaleshoni, makatani a chipinda chochitira opaleshoni ndi nsalu yopangira majeremusi, ndi bandeji yopyapyala, tepi, ndi filimu yoletsa kutupa.
3. Zipangizo zaukhondo
(1) m'mapiritsi aukhondo
★ nsalu yothira yosungunuka yomwe imayikidwa mkati mwa chivundikiro cha ukhondo, gawo losamutsira capillary
★ kugwiritsa ntchito nsalu yothira madzi ngati chotchinga cha madzi olowa m'malo mwa filimu yosalowa m'madzi ya polyethylene
(2) ponena za matewera a akuluakulu
Pakupanga, ulusi waufupi wa phala la matabwa umasakanizidwa ndi kuyenda kwa ulusi wa fusiform kuti apange nsalu yapadera ya fusiform yokhala ndi kuyamwa bwino.
4. Zipangizo zoyamwa mafuta
Monga chinthu choyamwa mafuta, mphamvu yoyamwa mafuta imatha kufika kuwirikiza ka 17 kuposa kulemera kwake.
Kawirikawiri, nsalu yopopera yothira mafuta imayikidwa mu chubu chautali cha mauna cholukidwa kuchokera ku ulusi wa PET ngati gridi yamadzi yoyandama kuti mafuta asamire komanso kuyamwa mafuta panyanja. Ikhozanso kuyikidwa pamutu pa chombo chokokera mafuta cha nsalu yopopera yothira mafuta ya PP, kuyeretsa mafuta mosalekeza pamwamba pake.
5. Zipangizo zobvala
(1) zipangizo zofunda
Ntchito yopambana kwambiri ndi nsalu yapadera yopopera yopangidwa ndi kampani ya 3M ku United States: mu ndondomeko ya ulusi wopopera wophatikizidwa, ulusi wopopera wa PET umasakanizidwa kuti upange kapangidwe koteteza mpweya kopangidwa ndi ulusi wopopera wa PET wokhala ndi kusinthasintha kwabwino komanso ulusi wa PP ultrafine.
(2) zovala zantchito zotayidwa
Kugwiritsa ntchito kwakukulu kwa nsalu yopangidwa ndi SMS, kuwonjezera pa chovala chogwirira ntchito, kwagwiritsidwa ntchito bwino m'mafakitale popanga zovala zoteteza.
6, nsalu yoyera
Makamaka ndi kugwiritsa ntchito mafuta achilengedwe a PP, omwe amagwiritsidwa ntchito poipitsa mafuta pamalo ogwirira ntchito.
Ndi kupita patsogolo kwa ukadaulo wosungunula ndi kupopera, nsalu yosungunula ndi kupopera ya PP yokhala ndi mphamvu yofewa ya hydrophilic ingapangidwe ndi chowonjezera choyenera chonyowetsa chinyezi, chomwe chingagwiritsidwe ntchito m'zipatala, m'zipinda zoyeretsera kwambiri, m'zipinda zolondola, m'zipinda ndi m'zipinda zamakompyuta.
Nthawi yotumizira: Epulo-03-2020