Ukuhlelwa kwefilimu eshwabeneyo yobushushu be-LDPE
Iifilimu ezinciphisa ukushisa kwe-LDPE zihlulwe zibe ziindidi ezimbini: ezinqamlezileyo kunye nezingadibanisiyo.Ngokuqhelekileyo, abavelisi basebenzisa izinto eziluhlaza kunye ne-MFR ye-0.3-1.5g / 10min xa bevelisa iifilimu ezingabonakaliyo ze-LDPE ezitshisa ukushisa.Ukunciphisa isalathisi sokunyibilika, ngakumbi ukufana nokusebenza kwe-shrinkage.Kwaye okukhona ukuqina kokuqina, kokukhona kufanelekile ukupakishwa.Abanye abavelisi basebenzisa unyango lwe-radiation kwimveliso yokuphucula iipropathi ezahlukeneyo zeefilimu ezinciphayo ubushushu.
Ifilimu ye-PE enobushushu obunciphayo inokuhlangabezana neemfuno zokupakishwa kwezinto ezininzi, kwaye yeyona filimu isetyenziswa kakhulu ubushushu.I-MI esetyenziswe kwiincinci ze-LDPE yi-0.3-1.5g / min.Ukupakishwa okunzima kucutha ifilimu okanye ifilimu ecuthekileyo eneemfuno eziphezulu zamandla, sebenzisa amasuntswana e-LDPE anomda ophantsi we-MI, ubushushu bokubumba i-LDPE yi-130-180 ℃, i-pre-cool ngomoya obandayo ongaphantsi kwe-25 ℃, kwaye emva koko ivuthele kufuphi nomgca weqabaka, kanye I-Longitudinal kunye ne-transverse stretching, i-total stretch ratio inokufikelela kwi-15-35, kwaye ifilimu iyacinywa kwi-10-25 ° C ukuya emoyeni okanye iyancipha ifilimu.Umyinge wokucutheka ngokubanzi ngama-30% -50%.
Iimpawu zezi:
1. Ifilimu eshwabeneyo ye-LDPE engadityaniswanga ithambile ngokwentelekiso, inokumelana neempembelelo ezintle, kwaye inamandla athile okukrazula;
2. Ukumelana kakuhle nobushushu obuphantsi;
3. Kulula ukucwangcisa kunye nokwenza, kulula ukutshisa isikhwama sokutywina;
4. Akukho kuncipha kwenzeka ngexesha lokugcinwa.Ukushwabadela ukusongelwa kweglasi, iiseramikhi, ukutya, izinto zokwakha, iikhemikhali, iipalethi, njl njl. Ubukhulu bepakethe ekhanyayo yi-0.02-0.06mm, kwaye ubukhulu bepalethi enzima kunye nenkulu yi-0.075-0.25mm.
Iipropati ze-LDPE ezicuthayo ifilimu:
1. Ubungqingqwa befilimu ebhityileyo yi-0.02-0.05mm, uhlobo oluphakathi yi-0.05-0.10mm, kwaye uhlobo olutyebileyo yi-0.10-0.15mm;
2. Amandla e-tensile yi-28-38MPa yohlobo olubhityileyo, i-20-30MPa yodidi oluphakathi, kunye ne-20-28MPa yodidi olushinyeneyo;
3. Ireyithi yokucutheka kohlobo olubhityileyo ngu-55% -65%, uhlobo oluphakathi luyi-45% -60%, uhlobo olutyebileyo luyi-30% -50%;Ibhafu ye-oyile yokuncipha kweqondo lokushisa yi-110-120 ℃, umoya oshushu yi-170-180 ℃;
4. Ixesha lokucutheka yi-5-10s yohlobo oluncinci kunye ne-20-30s yohlobo olunzima.
Ubuncinci bobunzima befilimu ecuthekayo yokupakishwa ngaphantsi kwe-400kg yi-120μm, i-800kg ifuna ubukhulu be-150μm, kunye nempahla ye-1200kg idinga ifilimu ye-LDPE eshwabeneyo enobunzima obuyi-200μm.
Ixesha lokuposa: Aug-09-2022