Polypropylene kana PP inodhura yakaderera thermoplastic yekujeka kwepamusoro, gloss yakakwirira uye yakanaka tensile simba.Iyo ine yakakwira kunyungudika kupfuura PE, iyo inoita kuti ive yakakodzera kune maapplication anoda sterilization pakupisa kwakanyanya.Iyo ine zvakare mhute shoma uye yakakwirira kupenya.Kazhinji, kupisa-kuvhara zvisimbiso zvePP hazvina kunaka seizvo zveLDPE.LDPE zvakare ine nani kubvarura simba uye yakaderera tembiricha kukanganisa kuramba.
PP inogona kugadzirwa nesimbi izvo zvinoguma nekuvandudzwa kwegasi barriers zvivakwa zvekuda maapplication uko kwakakosha hupenyu hwechigadzirwa.Mafirimu ePP akanyatsokodzera huwandu hwakawanda hwemaindasitiri, mutengi, uye emotokari kunyorera.
PP inodzokororwa zvizere uye inogona kudzokororwa nyore nyore mune zvimwe zvigadzirwa zvakawanda zvekushandisa zvakasiyana.Nekudaro, kusiyana nebepa uye zvimwe zvigadzirwa zve cellulose, PP haina biodegradable.Pamusoro pepamusoro, PP tsvina haiburitse chepfu kana inokuvadza ne-zvigadzirwa.
Mhando mbiri dzakanyanya kukosha ndeye cast unoriented polypropylene (CPP) uye biaxially oriented polypropylene (BOPP).Marudzi ese ari maviri ane gloss yakakwirira, yakasarudzika optics, yakanaka kana yakanakisa kupisa-kuisa chisimbiso kuita, nani kupisa kupisa kupfuura PE, uye yakanaka hunyoro inodzivirira zvivakwa.
Cast Polypropylene Films (CPP)
Cast unoriented Polypropylene (CPP) kazhinji inowana mashoma maapplication pane biaxially oriented polypropylene (BOPP).Nekudaro, CPP yave kuramba ichiwana pasi sesarudzo yakanakisa mune akawanda echinyakare anochinjika kurongedza pamwe neasina kurongedza maapplication.Iyo firimu zvivakwa zvinogona kugadzirwa kuti isangane nekurongedza, kuita, uye kugadzirisa zvinodiwa.Kazhinji, CPP ine yakakwira kubvarura uye kukanganisa kuramba, zvirinani kutonhora tembiricha kuita uye kupisa-kuvhara zvivakwa kupfuura BOPP.
Biaxially Oriented Polypropylene Films (BOPP)
Biaxially oriented polypropylene kana BOPP1 ndiyo inonyanya kukosha polypropylene firimu.Iyo yakanakisa imwe nzira kune cellophane, wax bepa, uye aluminium foil.Kutarisa kunowedzera simba rekusimba uye kuoma, kunoderedza kureba (kuoma kutambanudza), uye inovandudza optical zvivakwa, uye neimwe nzira inovandudza vapor barriers zvivakwa.Kazhinji, BOPP ine simba repamusoro-soro, yakakwira modulus (kuoma), kureba kwakadzika, gasi rinodzivirira riri nani, uye mhute yakaderera pane CPP.
Applications
Firimu rePP rinoshandiswa kune akawanda akajairwa ekurongedza maapplication akadai sefodya, zvihwitsi, snack uye yekuputira chikafu.Iyo zvakare inogona kushandiswa shrink kuputira, tepi liner, manapukeni uye isina kuputirwa yekuputira inoshandiswa mukurapa maapplication.Nekuti PP inongove neavhareji gasi zvipingamupinyi zvivakwa, kazhinji inoputirwa nemamwe mapolymers akadai sePVDC kana acrylic ayo anovandudza zvakanyanya ayo ekudzivirira gasi zvivakwa.
Nekuda kwekunhuhwirira kwakaderera, kukwirira kwemakemikari kuramba uye inertness, akawanda maPP mamakisi akakodzera kurongedza maapplication pasi pemirairo yeFDA.
Nguva yekutumira: Kubvumbi-07-2022