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Yintoni ukuqaliswa kweplastikifiilms?

Iifilimu zePlastiki zibonisa udidi olusisiseko lwezinto ezibonakalayo zepolymeric ezibonakaliswe ngobume bazo obuncinci, obuguquguqukayo kunye nommandla obanzi. Ezi zixhobo zobunjineli ziveliswa ngokucutshungulwa kwe-polymer resins-mhlawumbi ziphuma kwi-petroleum okanye zinyuka kwimithombo ehlaziyiweyo-kwiishiti eziqhubekayo ezinobungqimba obulawulwa ngokuchanekileyo, ububanzi, kunye neempawu zomatshini. Imakethi yefilim yeplastiki yehlabathi jikelele ikhule ngokukhawuleza ukusukela oko yaqalayo phakathi kwinkulungwane yama-20, ngemveliso yangoku yonyaka idlula i-100 lezigidi zeetoni zeemetric kwihlabathi liphela.

Ukuguquguquka kweefilimu zeplastiki zivela kwindibaniselwano yazo ekhethekileyo yeempawu: zikhaphukhaphu kodwa zihlala ixesha elide, zibhetyebhetye kodwa zomelele, kwaye ziselubala okanye zingabonakali ngokuxhomekeke kwiimfuno zokuqulunqwa. Ezi mpawu, zidityaniswe neendleko eziphantsi zemveliso, zenze iifilimu zeplastiki zaba yimfuneko kuwo onke amacandelo oshishino lwangoku kunye nobomi bemihla ngemihla. Ukusuka ekugcineni ukutsha kokutya ukuya ekuvumeleni i-elektroniki eguquguqukayo ephucukileyo, iifilimu zeplastiki zenza imisebenzi ehlala ingabonakali kubasebenzisi bokugqibela kodwa ibaluleke kakhulu ekusebenzeni kwemveliso kunye nozinzo.

Inkqubela phambili yamva nje kwisayensi yezinto eziphathekayo yandise amandla efilimu zeplastiki kude ngaphaya kweendima zabo zemveli. Ukuveliswa kwezinto ezintsha kubandakanya iifilimu ezitshintsha iipropathi ekuphenduleni ukuvuselela kokusingqongileyo, ezinye iindlela ze-biodegradable kwiiplastiki eziqhelekileyo, kunye neefilimu ezithintela ukusebenza okuphezulu kunye nekhono lokukhusela elingazange libonwe ngaphambili. Kwangaxeshanye, ukukhula kweenkxalabo zokusingqongileyo kukhuthaze uphuhliso lweenkqubo zokuphinda zisetyenziswe ezivaliweyo kunye nezixhobo zefilimu esekwe kwibhayoloji ezigcina ukusebenza ngelixa zinciphisa impembelelo yendalo.

Loluphi uhlobo lwefilimu yeplastiki?

Iifilimu ezininzi kakhulu

Iifilimu zePolyethylene lolona didi lusetyenziswa kakhulu lwefilimu yeplastiki, lubalelwa ngaphezulu kwe-40% yokusetyenziswa kwefilimu yeplastiki iyonke. Iindidi eziphambili kunye neempawu zeefilimu zePolyethylene:

1. Ifilimu yePolyethylene yoXinano oluPhantsi (LDPE)

Iifilimu ze-LDPE zibonakaliswa ngokuguquguquka kwazo, ukungafihli, kunye neempawu ezingenayo ityhefu, ezingenavumba. Banokuxhathisa okugqwesileyo kwamanzi, ukufuma-ubungqina bokufuma, kunye nokuzinza kweekhemikhali, okubenza bafanelekele ukupakisha ukutya, amayeza, kunye neemveliso ezisetyenziswa imihla ngemihla. Iifilimu ze-LDPE zikwanazo iimpawu ezilungileyo zokutywina ubushushu kwaye zihlala zisetyenziswa njengomaleko wokutywina ubushushu kwiifilimu ezihlanganisiweyo. Nangona kunjalo, banokuxhathisa ubushushu kwaye abafanelekanga ukupakisha ukupheka kobushushu obuphezulu.

2. Ifilimu yePolyethylene yoXinano oluPhezulu (HDPE)

Iifilimu ze-HDPE zinzima, zi-semi-translucent, kwaye zimhlophe ngombala. Babonisa ukomelela okuphezulu, ukuxhathisa ukufuma, ukumelana nobushushu, kunye nokumelana neoli xa kuthelekiswa ne-LDPE. I-HDPE ilungele ukupakishwa okuhlala ixesha elide kunye neefilimu zemizi-mveliso kodwa inokungafihli okuphantsi kunye neglosi.

3. Ifilimu yePolyethylene yoXinano oluPhantsi (LLDPE)

Iifilimu ze-LLDPE zidibanisa ukuguquguquka kwe-LDPE kunye namandla e-HDPE, inikezela ngeempawu ezibalaseleyo zokolula kunye nokumelana nokuhlatywa. Zisetyenziswa kakhulu kwiifilimu ezolulayo, iifilimu ezicuthayo, kunye neefilimu zokusonga, zizenza zilungele ukupakishwa okuzenzekelayo okuhamba ngesantya esiphezulu.

4. Ifilimu ye-Metallocene eNxinaniso ePhantsi yoXinano lwePolyethylene (mLLDPE)

Iifilimu ze-mLLDPE ziveliswa kusetyenziswa i-metallocene catalysts kwaye zinika amandla empembelelo ephezulu, amandla esivuno esiqinile, kunye nokucaca okungcono xa kuthelekiswa ne-LLDPE eqhelekileyo. Bavumela ukunciphisa ubukhulu befilimu ngaphezu kwe-15%, ngaloo ndlela behlisa iindleko zempahla. I-mLLDPE isetyenziswa ngokuqhelekileyo kwiifilimu ze-greenhouse, iifilimu zokupakisha ezinzima, iifilimu ezicuthayo, kunye nezixhobo zokupakisha eziphezulu.

Ezinye iifilimu zePlastiki

1. Iifilimu zePolypropylene (PP): Ziphawuleka ngokunyibilika kwazo okuphezulu (160-170 ° C), okwenza ukuba zilungele ukufakwa kwezicelo ezishushu kunye ne-microwave-safe packaging. Iifilimu ze-PP zibonelela ngokumelana neekhemikhali okugqwesileyo kwaye zihlala zisetyenziselwa ukupakishwa kokutya okutyiwayo kunye nezixhobo zonyango zokuvala inzala.

2. Iifilimu zePolyvinyl Chloride (PVC): Ixabiswe ukucaca okukhethekileyo kunye nokuprintwa kodwa ijongene nokuncipha kokusetyenziswa ngenxa yeenkxalabo zokusingqongileyo. Usetyenziso olushiyekileyo lubandakanya ukupakishwa kwamadyungudyungu kunye nezinye iifilimu zokuncamathela5.

3. Iifilimu zePolyester (PET): Ukuqhayisa amandla aphezulu kunye nokuzinza kwe-thermal, iifilimu ze-PET ziyimfuneko kwi-electronics flexible, iiteyiphu zemagneti, kunye nokupakishwa kokutya okuphezulu. I-PET ye-Biaxially-oriented (BOPET) ibonisa ngokukodwa iipropati eziphuculweyo zoomatshini kunye nezithintelo.

Iifilimu zePolymer eziKhethekileyo:

1. I-Polyamide (Nayiloni): Iimpawu ezikhethekileyo zesithintelo se-oksijini ekugcinweni kokutya

2. I-Polyvinylidene Chloride (PVDC): Umswakama obalaseleyo kunye nokusebenza komqobo we-oxygen

3. I-Polylactic Acid (PLA): I-Emerging bio-based alternative kunye ne-compostability, nangona ngokuqhelekileyo inqunyelwe yi-brittleness-inkqubela yakutshanje ivelise iifilimu eziguquguqukayo ze-PLA ngokubandakanya i-polyether plasticizers ngqo kwi-polymer chain.

Iindlela zePlastiki zokuvelisa ifilimu

1. I-Blown Film Extrusion: Inkqubo elawulayo yeefilimu ze-PE, apho i-polymer enyibilikisiweyo ikhutshwe ngokufa kwesetyhula, ifakwe kwi-bubble, kwaye ipholile ukwenza ityhubhu enokuthi ifakwe kwifilimu ephindwe kabini. Le ndlela ibonelela ngeempawu zomatshini ezilungeleleneyo kuzo zombini umatshini kunye nezikhokelo ezinqamlezayo.

2. I-Cast Film Extrusion: I-polymer enyibilikayo ikhutshelwa kwi-flat die kwi-roll epholileyo, ivelisa iifilimu ezicacileyo ezicacileyo kunye nobukhulu obufanayo. Okuqhelekileyo kwiifilimu ze-PP kunye ne-PET apho iimpawu ze-optical zibalulekile.

3. I-Calendering: Ngokuyintloko isetyenziselwa iifilimu ze-PVC, apho i-polymer compound idluliswa ngoluhlu lwee-roller ezifudumalayo ukufikelela kulawulo oluchanekileyo. Iifilimu ezikwiKhalenda zihlala zinomphezulu ongaphezulu komphezulu kodwa iipropathi zoomatshini ezifanayo kububanzi.

4. Isisombululo sokuCasa: Isetyenziselwa iifilimu ezikhethekileyo apho ukufana okugqithisileyo okanye ukuvakalelwa kobushushu kuthintela ukunyibilika. I-polymer inyibilika kwi-solvent, iphoswe kwibhanti, kwaye yomiswe ukuba yenze ifilimu-eqhelekileyo kwezinye iifilimu ze-biodegradable kunye nezicelo ze-membrane.

5. I-Biaxial Orientation: Iifilimu zoluliwe kumatshini kunye nezikhombisi-ndlela ezinqamlezayo, mhlawumbi ngokulandelelana (ifreyimu ye-tenter) okanye ngaxeshanye (inkqubo ye-bubble), iphucula ngokumangalisayo amandla, ukucaca, kunye neempawu zokuthintela. Iifilimu ze-PP (BOPP) ezijoliswe kwi-Biaxially kunye ne-PET (BOPET) ziyimigangatho yoshishino yokupakishwa kokusebenza okuphezulu.

Iindlela ezisakhulayo kunye nezinto ezintsha kwiiFilimu zePlastiki

Umzi bhanyabhanya weplastiki uyakhula, ugxininise kakhulu kuzinzo, ukusebenza kunye nokusebenza kakuhle. Ezinye iintsingiselo eziphawulekayo ziquka:

1.Iiarhente ze-PFAS zasimahla:Iiarhente zokutyibilika ezizinzileyo ezinqanda izinto ze-per- kunye ne-polyfluoroalkyl (PFAS), zijongana neemfuno zokusebenza kunye neenkxalabo zokusingqongileyo.

2. Amanyathelo oZinzo: Iinkampani ezifana neFox Packaging ziye zayisusa ngempumelelo i-PFAS kuzo zonke iinketho zazo zokupakisha eziguquguqukayo, ezihambelana nolawulo olubanzi kunye neendlela zeshishini. I-US FDA ikhusele izibophelelo ngokuzithandela zokususa i-PFAS kwipakethe yokutya, igalelo ekunciphiseni okubonakalayo kokuvezwa kwe-PFAS yokutya.

Izisombululo ezitsha zePFAS-Izincedisi zokusetyenzwa zasimahla iifilimu zeplastiki ezivela kwi-SILIKE

I-SILIKE ithatha indlela esebenzayo kunye neemveliso zayo ze-SILIMER, ezibonelela ngezinto ezintshaIi-PFAS-free polymer processing aids (PPAs). Lo mgca wemveliso ugcweleyo une-100% yeePPA ezimsulwa ezingena-PFAS, iimveliso zePPA ezingenafluorine, kunye ne-PFAS-free, i-fluorine-free PPA masterbatches. Ngokususa imfuno yezongezo ze-fluorine, ezi mveliso ziphucula kakhulu inkqubo yokwenziwa kwe-LLDPE, LDPE, HDPE, mLLDPE, PP, kunye neemveliso zefilimu. Bahambelana nemigaqo yamva nje yokusingqongileyo ngelixa bekwanyusa ukusebenza kakuhle kwemveliso, ukunciphisa ixesha lokuphumla, kunye nokuphucula umgangatho wemveliso ngokubanzi. Nge-SILIKE PFAS-free PPA izisa izibonelelo zeMveliso zokugqibela, ezibandakanya: ukupheliswa kokwaphuka okunyibilikayo (ulusu lukakrebe), ukuguda okuphuculweyo, kunye nomgangatho womphezulu.

Ndikhangela iezinye iindlela ezizinzileyo kwimveliso yefilimu yeplastiki or PPA for polyethylene functional-additive masterbatches?  SILIKE’s PFAS-Free PPA solutions can help enhance your Plastic film production while aligning with environmental standards. Visit web: www.siliketech.com or contact us at amy.wang@silike.cn to discover more.