Mapurasitiki egiredhi echikafu akakamurwa kuita: PET (polyethylene terephthalate), HDPE (yakakwirira density polyethylene), LDPE (yakaderera density polyethylene), PP (polypropylene), PS (polystyrene), PC uye mamwe mapoka.

PET (polyethylene terephthalate)

Kushandiswa kwakajairika: mabhodhoro emvura yemaminerari, mabhodhoro echinwiwa checarbonated, nezvimwe.
Mineral mabhodhoro emvura uye mabhodhoro echinwiwa checarbonated anogadzirwa neichi chinhu.Mabhodhoro ekunwa haagone kudzokororwa kumvura inopisa, uye zvinhu izvi zvinoshingirira kupisa kusvika ku70°C.Inokodzera zvinwiwa zvinodziya kana chando chete, uye inokanganisika nyore kana izere nezvinwiwa zvinopisa kana kudziyisa, iine zvinhu zvinokuvadza vanhu vari kubuda kunze.Uyezve, masayendisiti akawana kuti mushure memwedzi gumi yekushandiswa, chigadzirwa chepurasitiki ichi chinogona kuburitsa kenza dzine chepfu kuvanhu.

Nokuda kwechikonzero ichi, mabhodhoro ekunwa anofanira kuraswa kana apera uye asingashandisi semikombe kana midziyo yekuchengetera zvimwe zvinhu kudzivirira matambudziko ehutano.
PET yakatanga kushandiswa sefiber yekugadzira, pamwe nemufirimu uye tepi, uye muna 1976 chete ndiyo yakashandiswa mumabhodhoro ekunwa.PET yakashandiswa sekuzadza mune inowanzozivikanwa se'PET bhodhoro'.

Bhodhoro rePET rine kuoma kwakanyanya uye kuoma, rakareruka (chete 1/9 kusvika 1/15 yehuremu hwebhodhoro regirazi), riri nyore kutakura nekushandisa, rinoshandisa simba shoma mukugadzira, uye haripindire, risingapindike uye rinoramba. kune asidhi uye alkalis.

Mumakore achangopfuura, yave yakakosha kuzadza mudziyo wecarbonated zvinwiwa, tii, muto wemichero, yakaputirwa mvura yekunwa, waini uye soy muto, nezvimwe. Pamusoro pezvo, kuchenesa mishonga, shampoos, mafuta echikafu, condiments, zvinotapira chikafu, zvinodhaka, cosmetics. , uye zvinwiwa zvinodhaka zvave zvichishandiswa muhuwandu hwakawanda mumabhodhoro ekurongedzerwa.

HDPE(High Density Polyethylene)

Kushandiswa kwakajairika: zvigadzirwa zvekuchenesa, zvigadzirwa zvekugezesa, nezvimwe.
Zvidzitiro zvepurasitiki zvekuchenesa zvigadzirwa, zvigadzirwa zvekugezesa, mabhegi epurasitiki anoshandiswa muzvitoro zvikuru uye zvitoro zvinonyanya kugadzirwa nechinhu ichi, chinogona kumira 110 ℃ yakanyanya tembiricha, yakamisikidzwa nemabhegi epurasitiki echikafu anogona kushandiswa kubata chikafu.Zvidzitiro zvepurasitiki zvekuchenesa zvigadzirwa uye zvigadzirwa zvekugezesa zvinogona kushandiswa zvakare mushure mekunyatsocheneswa, asi midziyo iyi kazhinji haina kucheneswa, ichisiya masara ezvigadzirwa zvekuchenesa zvekutanga, zvichivaita nzvimbo yekuberekera mabhakitiriya uye kuchenesa kusina kukwana, saka zviri nani kuti usaite. dzokorora zvakare.
PE ndiyo ipurasitiki inonyanya kushandiswa mumaindasitiri uye hupenyu, uye inowanzokamurwa kuita marudzi maviri: high-density polyethylene (HDPE) uye yakaderera-density polyethylene (LDPE).HDPE ine nzvimbo yakakwirira yekunyungudika kupfuura LDPE, yakaoma uye inoshingirira kukukurwa kwezvinwiwa zvinoparadza.

LDPE inowanikwa kwose kwose muhupenyu hwemazuva ano, asi kwete nekuda kwemidziyo yakagadzirwa nayo, asi nekuda kwehombodo dzepurasitiki unogona kuona kwose kwose.Mazhinji emabhegi epurasitiki nemafirimu akagadzirwa neLDPE.

LDPE (Low Density Polyethylene)

Kushandiswa kwakajairika: firimu rekudya, nezvimwe.
Firimu yekunamatira, firimu repurasitiki, nezvimwe zvese zvinogadzirwa nechinhu ichi.Kupisa kupisa hakuna kusimba, kazhinji, inokodzera PE inonamatira firimu mune tembiricha inopfuura 110 ℃ ichaonekwa inopisa inonyungudika chiitiko, inosiya imwe muviri wemunhu haigone kuora mumiriri wepurasitiki.Uyewo, kana zvokudya zvinopisa mufirimu yezvokudya, mafuta ari muzvokudya anogona kunyungudutsa nyore nyore zvinhu zvinokuvadza mufirimu.Nokudaro, zvakakosha kubvisa kuputira kwepurasitiki kubva muchikafu mu microwave kutanga.

PP (polypropylene)

Kazhinji kushandiswa: microwave lunch mabhokisi
Microwave lunch boxes yakagadzirwa nechinhu ichi, iyo inopikisa 130 ° C uye ine hurombo husina kujeka.Iri ndiro chete bhokisi repurasitiki rinogona kuiswa mumicrowave uye rinogona kushandiswa zvakare mushure mekunyatsocheneswa.

Zvakakosha kucherechedza kuti mamwe midziyo ye microwave yakagadzirwa nePP 05, asi chivharo chacho chakagadzirwa nePS 06, iyo ine kujeka kwakanaka asi haigoni kupikisa kupisa kwakanyanya, saka haigoni kuiswa mu microwave pamwe chete nemudziyo.Kuti uve parutivi rwakachengetedzeka, bvisa chivharo usati waisa mudziyo mu microwave.
PP uye PE zvinogona kunzi ihama mbiri, asi zvimwe zvemuviri uye zvemagetsi zvivakwa zviri nani pane PE, saka vanogadzira mabhodhoro vanowanzo shandisa PE kugadzira muviri webhodhoro, uye kushandisa PP nekuoma kukuru uye simba kugadzira cap uye kubata. .

PP ine nzvimbo yakakwira yekunyungudika inosvika 167°C uye inoshingirira kupisa, uye zvigadzirwa zvayo zvinogona kuvharwa nepfuti.Mabhodhoro akajairika akagadzirwa kubva kuPP ndiwo mukaka wesoya uye mabhodhoro emukaka wemupunga, pamwe nemabhodhoro e100% muto wemuchero wakachena, yoghurt, zvinwiwa zvejusi, zvigadzirwa zvemukaka (zvakadai sepudding), nezvimwe midziyo mikuru, semabhakiti, mabhini, madhishi ekuwachira, mabhasikiti, mabhasikiti, nezvimwewo, anonyanya kugadzirwa kubva kuPP.

PS (polystyrene)

Kushandiswa kwakajairika: mbiya dzemabhokisi enoodle, mabhokisi ekudya nekukurumidza
Zvinhu zvinoshandiswa kugadzira ndiro dzema noodles uye furo mabhokisi echikafu chekukurumidza.Iyo inopisa uye inotonhora inodzivirira, asi haigone kuiswa muvheni yewa microwave kudzivirira kuburitswa kwemakemikari nekuda kwekupisa kwakanyanya.Haifanirwe kushandiswa kune yakasimba asidhi (semuenzaniso orange juice) kana alkaline zvinhu, se polystyrene, iyo yakaipa kuvanhu, inogona kuora.Naizvozvo, iwe unofanirwa kudzivirira kurongedza chikafu chinopisa mumidziyo yekudya nekukurumidza sezvinobvira.
PS ine kunyura kwemvura yakaderera uye yakagadzikana muchidimbu, saka inogona kuumbwa jekiseni, kudzvanywa, kukwiziridzwa kana kugadzirwa thermoform.Inogona kuumbwa jekiseni, kudzvanya kuumbwa, kuwedzeredzwa uye ne thermoformed.Iyo inowanzoiswa seyapupuma furo kana isina furo zvichienderana nekuti yakamboitwa "kupupa" maitiro.

PCnevamwe

Kushandiswa kwakajairika: mabhodhoro emvura, makapu, mabhodhoro emukaka
PC chinhu chinoshandiswa zvakanyanya, kunyanya mukugadzira mabhodhoro emukaka uye makapu emuchadenga, uye inopokana nekuti ine Bisphenol A. Nyanzvi dzinoratidza kuti mudzidziso, chero BPA iri 100% yakashandurwa kuita chimiro chepurasitiki panguva yekugadzirwa kwe PC, zvinoreva kuti chigadzirwa chakazara BPA-isina, tisingatauri kuti hachina kuburitswa.Nekudaro, kana huwandu hudiki hweBPA husina kushandurwa kuita mupurasitiki yePC, inogona kuburitswa kuita chikafu kana zvinwiwa.Nokudaro, kunyanya kuchenjerera kunofanira kutorwa paunenge uchishandisa aya mapurasitiki epurasitiki.
Iyo yakakwirira tembiricha yePC, iyo yakawanda BPA inoburitswa uye nekukurumidza iyo inoburitswa.Nokudaro, mvura inopisa haifaniri kushandiswa mumabhodhoro emvura ePC.Kana ketero yako iri nhamba 07, zvinotevera zvinogona kuderedza njodzi: Usapisa kana uchishandiswa uye usaisa pachena kune zuva rakananga.Usageze ketero mumudziyo wokusuka ndiro.

Usati waishandisa kekutanga, igeze nesoda yekubikisa nemvura inodziya woiomesa zvawo patembiricha yemumba.Zvinokurudzirwa kurega kushandisa mudziyo kana uine chero madonhwe kana kuputika, sezvo zvigadzirwa zvepurasitiki zvinogona kuchengetedza mabhakitiriya zviri nyore kana zvine nzvimbo yakatsetseka.Dzivisa kushandisa kakawanda midziyo yepurasitiki inenge yaparara.