High pob tshab pab txhawb kev txheeb xyuas cov khoom; High longitudinal elongation yooj yim ua ntej ncab thiab txuag cov khoom siv; Kev ua tau zoo puncture thiab transverse kua muag lub zog tso cai rau cov yeeb yaj kiab ntsib cov ces kaum ntse lossis cov npoo ntawm cov khoom tsis tawg ntawm qhov sib zog tensile siab; High yield point ua rau cov khoom ntim nruj dua.
Cov yeeb yaj kiab tsim los ntawm txoj kev cam khwb cia muaj qhov pom tseeb siab, uas tsis tau tham txog ntawm no. Nrog rau qhov nce ntawm C atoms ntawm lub comonomer ntawm cov khoom, qhov ntev ntawm ceg saw nce, crystallinity txo, thiab "winding los yog kinking" cov nyhuv ntawm cov copolymer nce, yog li qhov elongation nce, thiab lub zog puncture. thiab lub zog tsim kua muag kuj nce. MPE yog cov txheej txheem siab-dimensional polymer nrog qhov nqaim molecular hnyav faib, uas tuaj yeem tswj hwm lub cev ntawm cov khoom polymer, yog li kev ua haujlwm tau zoo dua ntxiv. Vim qhov nqaim molecular hnyav faib ntawm MPE thiab qhov nqaim ua ntau yam, cov txheej txheem ua haujlwm yog qhov nyuaj rau kev tswj, thiab 5% LDPE feem ntau yog ntxiv los txo cov viscosity yaj thiab ua kom cov yeeb yaj kiab.
Tus nqi ntawm MPE kuj siab, thiab txhawm rau txo cov nqi, MPE feem ntau yog siv nrog C4-LLDPE, tab sis tsis yog txhua tus C4-LLDPE tuaj yeem ua khub nrog nws, yog li koj yuav tsum muaj kev xaiv . Lub tshuab ncab zaj duab xis feem ntau yog ua los ntawm C6 thiab C8 cov ntaub ntawv, uas yog ib qho yooj yim rau txheej txheem thiab tuaj yeem ua tau raws li ntau yam kev ntim khoom. Vim tias qhov qis qis ntawm phau ntawv ntim, cov khoom siv C4 feem ntau yog siv.
Qhov ntom ntawm cov khoom kuj cuam tshuam rau cov khoom ntawm cov yeeb yaj kiab. Nrog rau qhov nce ntawm qhov ntom ntom, qhov kev taw qhia kev kawm tau zoo dua qub, qhov flatness yog qhov zoo, qhov ntev elongation yog txhim kho, thiab lub zog tawm los tau zoo dua, tab sis lub zog hloov pauv, lub zog tawg thiab lub teeb xa tawm raug txo. Qhov sib ntxiv ntawm LMPE kuj tseem tuaj yeem txo qhov coefficient ntawm kev sib txhuam ntawm cov txheej tsis nplaum thiab zam qhov adhesion ntawm lub tais ntim rau lub pallet.
Cov nyhuv ntawm qhov txias yob qhov kub. Qhov kub ntawm cov tub yees txias nce, lub zog tawm los nce, tab sis qhov seem ntawm qhov kev ua tau zoo txo qis, yog li qhov kub ntawm cov cua txias kuv cov menyuam feem ntau tswj ntawm 20 degree ~ 30 degree. Qhov nro ntawm txoj kab nrum cuam tshuam rau qhov flatness thiab nruj ntawm zaj duab xis, thiab yog tias PIB lossis nws cov masterbatch siv los ua cov nplaum txheej, nws kuj 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, thiab qhov kev ntxhov siab tseem nyob hauv cov yeeb yaj kiab yob yog tias nws loj dhau, uas txo cov elongation thiab lwm yam khoom, thiab yooj yim ua rau cov yeeb yaj kiab tawg. Daim ntawv thov ntawm stretch film.
Stretch zaj duab xis muaj ntau yam kev siv, feem ntau yog siv ua ke nrog pallets, los ntim cov khoom xoob hauv ib txheej, tsis yog cov thawv me me. Vim tias nws tuaj yeem txo tus nqi ntawm kev thauj khoom thauj ntau thiab ntim ntau dua 30%, nws yog dav siv nyob rau hauv tag nrho cov pob khoom kho vajtse, minerals, tshuaj, tshuaj, zaub mov, tshuab thiab lwm yam khoom; Nyob rau hauv lub tshav pob ntawm cov chaw cia khoom, lub teb chaws txawv teb chaws kuj siv stretch film pallet ntim rau peb-seem cia thiab tsheb thauj mus los kom txuag tau qhov chaw thiab av ua hauj lwm.
