Mukugadzira maitiro e spunbonded nonwovens, zvakasiyana siyana zvinogona kukanganisa chimiro chemuviri wezvigadzirwa.
Ongororo yezvinhu zvikuru zvinokanganisa zvivakwa zvemachira zvinobatsira kudzora mamiriro ekuita nemazvo uye kuwana yakanaka PP yakarukwa isina mawovens ine yakanaka mhando kuti ikwane kushandiswa kwevatengi.
1.Polypropylene type: melt index uye molecular weight
Iwo makuru emhando indexes ye polypropylene zvinhu ndeye molecular uremu, molecular uremu kugovera, isotacticity, melt index uye madota.
Vatengesi vepolypropylene vari kumusoro kwecheni yepurasitiki, vachipa polypropylene mbishi zvinhu pamagiredhi akasiyana uye zvakatemwa.
Kugadzira spunbond nonwoven, polypropylene molecular uremu kazhinji pa100,000-250,000.Nekudaro, zvakaratidzwa kuti iyo melt property inoshanda zvakanyanya kana molecular uremu hunenge 120000. Iyo yakanyanya kutenderera yekumhanya yakakwirawo padanho iri.
Melt index ndiyo parameter inoratidza rheological properties yekunyunguduka.Iyo melt index yePP particle ye spunbond inowanzova pakati pegumi ne50.
Iyo diki yakanyungudika indekisi ndeye, iyo yakanyanya kunyungudika iri, iyo diki dhizaini reshiyo, uye yakakura saizi yefiber iyo pasi pemamiriro eiyo imwechete yakanyungudika kubuda kubva ku spinneret, saka nonwovens anoratidza zvakanyanya kuoma ruoko kunzwa.
Kana yakanyunguduka index yakakura, viscosity yekunyunguduka inoderera, iyo rheological pfuma inouya iri nani, uye kuramba kwekunyora kunoderera.Pasi pemamiriro akafanana ekushanda, kunyora kwakawanda kunowedzera.Nekuwedzera kwekutarisisa dhigirii remacromolecules, kuputsa kwesimba rekusarukwa kuchavandudzwa, uye saizi yeshinda ichadzikiswa, uye jira rinonzwa rakapfava.Nemaitiro akafanana, iyo yakanyanya kunyunguduka index, simba rekutsemuka rinoita zvakanyanya. .
2. Kutenderera tembiricha
Kumisikidzwa kwekutenderera tembiricha kunoenderana nekunyunguduka indekisi yezvakagadzirwa uye zvinodikanwa zvemuviri zvimiro zvezvigadzirwa.Iyo yakakwira iyo melt index inoda yakanyanya kutenderera tembiricha, uye zvinopesana.Iyo yekutenderera tembiricha yakanangana neiyo melt viscosity.Nekuda kweiyo viscosity yakakwira yekunyungudika, zvinonetsa kutenderera, zvichikonzera kuputsika, kuomarara kana kuomarara kweshinda, izvo zvinokanganisa kunaka kwezvigadzirwa.
Naizvozvo, kuitira kuderedza viscosity yekunyunguduka uye kugadzirisa rheological zvimiro zvekunyunguduka, kuwedzera tembiricha kunowanzo kugamuchirwa.Iyo tembiricha yekutenderera ine simba guru pane chimiro uye zvimiro zvefiber.
Kana tembiricha yekutenderera ichikwira, simba rekupwanya rinokwira, kureba kwekupwanya kudiki, uye jira rinonzwa rakapfava.
Mukuita, tembiricha yekutenderera inowanzoisa 220-230 ℃.
3. Kutonhora kwehuwandu
Mukugadzira ma spunbonded nonwovens, kutonhora kweshinda kune simba guru pane zvemuviri zve spunbonded nonwovens.
Kana fiber yakanyoroveswa zvishoma nezvishoma, inowana yakagadzikana monoclinic crystal structure, iyo isingakodzeri kuti fiber ikwekwe. Naizvozvo, mukuumba nzira, nzira yekuwedzera kutonhora kwemhepo uye kuderedza kutonhora kwekamuri yekutenderera inowanzoshandiswa kuvandudza kuputsa simba uye kuderedza kurebesa kwejira rakarukwa risiri rakarukwa.Mukuwedzera, kureba kwekutonhora kweshinda kunewo hukama hwepedyo nehupfumi hwayo.Mukugadzira machira akarukwa asina kurukwa, kureba kwekutonhodza kunowanzova pakati pe50 cm kusvika 60 cm.
4. Drafting Conditions
The orientation degree of molecular chain in filament chinhu chakakosha chinokanganisa kutyora kureba kwe monofilament.
Kufanana nekutyoka kwesimba rema spunbonded nonwovens zvinogona kuvandudzwa nekuwedzera kusvetwa kwemhepo.Nekudaro, kana huwandu hwemhepo hwekukweva hwakakurisa, zviri nyore kutyora shinda, uye dhizaini rakanyanyisa, kutaridzika kwepolymer kunenge kwakazara, uye crystallinity yepolymer yakanyanya, izvo zvinoderedza simba rekuita uye kurebesa panguva yekuzorora, uye kuwedzera brittleness, zvichikonzera kudzikira kwesimba uye kurebesa kwejira risiri rakarukwa.Zvinogona kuonekwa kuti kusimba uye kurebesa kwespunbonded nonwovens kunowedzera uye kuderera nguva nenguva nekuwedzera kwekusvetwa kwemhepo.Mukugadzirwa chaiko, maitiro anofanirwa kugadziridzwa zvinoenderana nezvinodiwa uye mamiriro chaiwo kuitira kuti uwane zvigadzirwa zvemhando yepamusoro.
5. Kupisa kunopisa kupisa
Mushure medandemutande rakagadzirwa nekudhirowa, rakasununguka uye rinofanirwa kusungwa nekupisa kukunguruka.Chinokosha ndechekudzora tembiricha nekumanikidza.Basa rekudziya nderokunyorovesa uye kunyungudutsa fiber.Huwandu hwemafibhi akapfava uye akasanganiswa anotarisisa zvimiro zvePP spunbond nonwoven jira.
Kana tembiricha ikatanga kudzikira, kachikamu kadiki chete kane huremu hwemamolecular huremu hunopfava uye kunyunguduka, mafiibhi mashoma anosungirirwa pamwe chete pasi pekumanikidzwa. Fibre dziri padandemutande dziri nyore kutsvedza, simba rekutsemuka kwejira risiri rakarukwa idiki uye kureba kwakakura, uye jira rinonzwa rakapfava asi richigoneka kuita fuzz;
Kana kupisa kunopisa kunowedzera kuwedzera, huwandu hwefiber yakanyoroveswa uye yakanyunguduka inowedzera, iyo fiber webhu inosungirirwa padhuze, kwete nyore kutsvedza.Simba rekuputsika rejira risina kuruka rinowedzera, uye kureba kuchiri kukuru.Uyezve, nekuda kwehukama hwakasimba pakati pefibers, kureba kunowedzera zvishoma;
Kana tembiricha ichikwira zvakanyanya, simba remanonwovens rinotanga kudzikira, kurebesa kwacho kunodzikirawo zvakanyanya, unonzwa jira richiva rakaomarara uye richipwanyika, uye simba rekubvaruka rinodzikira. Kune zvinhu zvakakora zvishoma, pane shinda shoma panzvimbo inopisa uye shoma. kupisa kunodiwa pakupfava uye kunyunguduka, saka tembiricha inopisa inopisa inofanira kudzikira.Zvichienderana, kune zvinhu zvakakora, tembiricha inopisa inoputika yakakwirira.
6. Hot rolling pressure
Muchisungo chekubatanidza kwekuputira kunopisa, basa rekupisa rinoputika mill line pressure nderokuita kuti mafiber akanyoroveswa uye akanyunguduka abatane pamwe chete, kuwedzera kuwirirana pakati pemafibhi, uye kuita kuti fiber isava nyore kutsvedza.
Kana iyo inopisa-yakatenderedzwa mutsara kudzvanywa kwakadzikira, iyo fiber density painotsikirira yakashata, iyo fiber bonding fastness haina kukwirira, uye kubatana pakati pefiber kwakashata.Panguva ino, ruoko kunzwa spunbonded non-yakarukwa jira iri zvinyoronyoro, elongation panguva zororo yakakura, asi kutyora simba zvishoma;
pane zvinopesana, kana mutsara wekumanikidzwa kwakanyanyisa, ruoko runonzwa rwejira risina kuruka rakarukwa rinenge rakaoma, uye elongation panguva yekuzorora inenge yakaderera Asi simba rekuputsa rakakwirira.Kugadzika kwemhepo inopisa inopisa ine zvakawanda zvekuita nehuremu nekukora kwemachira asina kurukwa.Kuti ugadzire zvigadzirwa zvinosangana nezvinodiwa zvekushanda, zvinodikanwa kuti usarudze yakakodzera inopisa inopisa kumanikidza zvinoenderana nezvinodiwa.
Mushoko rimwe chete, hunhu hwemachira asiri akarukwa mhedzisiro yekudyidzana kwezvinhu zvakawanda.Kunyange kukora kwejira rimwe chete, kushandiswa kwemachira kwakasiyana kungada maitiro akasiyana ehunyanzvi.Ndosaka kugumburwa kwevatengi vakabvunzwa kushandiswa kwejira.Zvichabatsira mutengesi. ronga kugadzirwa nechinangwa chakananga uye ipa mutengi anodiwa jira rinonyanya kugutsikana risiri rakarukwa.
Semakore gumi nematanhatu mugadziri, Fuzhou Heng Hua New Material Co., Ltd.vane chivimbo kupa jira maererano nezvinodiwa nevatengi.Isu tanga tichiendesa kune dzakasiyana nyika nematunhu uye takarumbidzwa zvakanyanya nevashandisi.
Tikugashirei tibvunze uye tanga kubatana kwenguva refu neHenghua Nonwoven!
Nguva yekutumira: Kubvumbi-16-2021
