Cov pob tshab siab yog qhov tsim nyog rau kev txheeb xyuas cov khoom;high longitudinal elongation yog qhov tsim nyog rau pre-stretching thiab txuag cov khoom siv;zoo puncture kev ua tau zoo thiab transverse tsim kua muag lub zog cia cov zaj duab xis ntsib cov ces kaum ntse los yog ntug tsis tawg;qhov siab yield point ua rau cov khoom ntim nruj dua.
Cov yeeb yaj kiab uas tsim los ntawm txoj kev casting muaj qhov pom tseeb siab.Nrog rau qhov nce ntawm C atoms ntawm lub comonomer ntawm cov khoom, cov ceg saw ntev nce, lub crystallinity txo, thiab "winding los yog kinking" cov nyhuv ntawm qhov tshwm sim copolymer nce, yog li qhov elongation nce, thiab lub zog puncture thiab lub zog tsim kua muag kuj nce.Thiab MPE yog ib qho zoo heev stereoregular polymer nrog ib tug nqaim molecular hnyav tis, uas muaj peev xwm tswj tau lub cev lub cev ntawm cov polymer, yog li nws cov kev ua tau zoo dua ntxiv;thiab vim tias MPE muaj qhov nqaim molecular hnyav tis thiab nqaim ua ntau yam, nws nyuaj rau kev tswj cov txheej txheem ua haujlwm.Ntxiv 5% LDPE kom txo cov yaj viscosity thiab ua kom cov yeeb yaj kiab flatness.
Tus nqi ntawm MPE kuj siab.Txhawm rau txo cov nqi, MPE feem ntau yog siv ua ke nrog C4-LLDPE, tab sis tsis yog txhua tus C4-LLDPE tuaj yeem sib phim nrog nws, yog li yuav tsum muaj kev xaiv.Tshuab-siv stretch films feem ntau siv C6 thiab C8 cov ntaub ntawv, uas yog ib qho yooj yim rau txheej txheem thiab muaj peev xwm ua tau raws li ntau yam yuav tsum tau ntim.Rau phau ntawv ntim, cov ntaub ntawv C4 feem ntau yog siv vim qhov qis qis.
Cov khoom siv ntom ntom kuj cuam tshuam rau kev ua haujlwm ntawm cov yeeb yaj kiab.Raws li qhov ceev nce, qhov degree ntawm kev taw qhia nce, qhov flatness yog qhov zoo, qhov ntev elongation nce, thiab lub zog tawm los nce, tab sis lub transverse tear zog, puncture zog thiab lub teeb transmittance tag nrho txo.Yog li ntawd, tag nrho cov kev ua tau zoo ntawm txhua yam yog feem ntau nyob rau hauv tsis nplaum Ntxiv ib qho tsim nyog tus nqi ntawm nruab nrab ntom linear polyethylene (LMDPE) rau txheej.Ntxiv LMDPE kuj tseem tuaj yeem txo qhov coefficient ntawm kev sib txhuam ntawm cov txheej tsis nplaum thiab zam qhov adhesion ntawm lub hnab ntim khoom rau lub pallet.
Qhov cuam tshuam ntawm qhov txias yob qhov kub.Raws li qhov kub ntawm qhov txias yob nce, lub zog tawm los nce, tab sis lwm yam khoom txo qis.Yog li ntawd, qhov kub ntawm qhov txias yob kuv yog feem ntau tswj ntawm 20 ° C mus rau 30 ° C.Qhov nro ntawm txoj kab casting cuam tshuam qhov flatness thiab winding nruj ntawm zaj duab xis.Yog tias PIB lossis nws cov masterbatch siv los ua cov nplaum nplaum, nws tseem cuam tshuam rau kev tsiv teb tsaws ntawm PIB thiab txo cov viscosity kawg ntawm zaj duab xis.Qhov nro feem ntau tsis ntau tshaj 10kg.Kev ntxhov siab ntau dhau yuav nyob twj ywm hauv zaj duab xis yob, uas yuav txo qhov elongation thiab lwm yam khoom thiab yooj yim ua rau zaj duab xis tawg.Daim ntawv thov ntawm stretch film
Stretch zaj duab xis muaj ntau yam kev siv, feem ntau yog siv los ua ke nrog cov pallets, los ntim cov khoom tawg nyob rau hauv ntau, es tsis txhob ntim me me.Vim tias nws tuaj yeem txo tus nqi ntawm kev thauj mus los thiab ntim ntau dua 30%, nws yog dav siv nyob rau hauv tag nrho cov ntim ntawm ntau yam khoom xws li kho vajtse, minerals, tshuaj, tshuaj, khoom noj khoom haus, machinery, thiab lwm yam.;nyob rau hauv lub tshav pob ntawm warehouse cia, nws kuj yog siv ntau txawv teb chaws.Stretch zaj duab xis pallets yog ntim rau peb-seem cia thiab kev thauj mus los kom txuag chaw thiab kev ua haujlwm.
Post lub sij hawm: Lub Xya hli ntuj-08-2021