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Yintoni ukungeniswa kweplastikifii-ilms?

Iifilimu zeplastiki zimele udidi oluphambili lwezinto zepolymeric ezibonakaliswa bubume bazo obuncinci, obuguquguqukayo kunye nommandla omkhulu womphezulu. Ezi zinto zenziwe ngobunjineli ziveliswa ngokucubungula ii-resin zepolymer—nokuba zivela kwi-petroleum okanye kwimithombo evuselelekayo ngakumbi—zibe ziiphepha eziqhubekayo ezinobukhulu obulawulwa ngokuchanekileyo, ububanzi, kunye neempawu zoomatshini. Imarike yefilimu yeplastiki yehlabathi ikhule kakhulu ukusukela oko yasungulwa phakathi kwinkulungwane yama-20, kunye nemveliso yonyaka yangoku edlula iitoni ezili-100 zezigidi kwihlabathi liphela.

Ukuguquguquka kweefilimu zeplastiki kuvela kudibaniso lwazo olukhethekileyo lweempawu: zikhaphukhaphu kodwa zihlala ixesha elide, ziguquguquka kodwa zomelele, kwaye zicacile okanye azibonakali ngokuxhomekeke kwiimfuno zokwenziwa. Ezi mpawu, xa zidibene neendleko zemveliso eziphantsi, zenze iifilimu zeplastiki zabaluleka phantse kuzo zonke iindawo zoshishino zanamhlanje nobomi bemihla ngemihla. Ukususela ekugcineni ukutya okutsha ukuya ekuvumeleni izixhobo ze-elektroniki eziguquguqukayo, iifilimu zeplastiki zisebenza imisebenzi ehlala ingabonakali kubasebenzisi bokugqibela kodwa ibaluleke kakhulu ekusebenzeni kwemveliso nasekuzinzeni.

Uphuhliso lwakutshanje kwisayensi yezinto ezibonakalayo luye lwandisa amandla eefilimu zeplastiki ngaphaya kakhulu kwendima yazo yesiqhelo. Izinto ezintsha ziquka iifilimu ezitshintsha iipropati ngenxa yezizathu zokusingqongileyo, ezinye iindlela ezinokubola endaweni yeplastiki eqhelekileyo, kunye neefilimu zokuthintela ezisebenza kakhulu ezinezakhono zokukhusela ezingazange zibonwe ngaphambili. Kwangaxeshanye, ukwanda kwenkxalabo yokusingqongileyo kukhuthaze uphuhliso lweenkqubo zokuphinda zisetyenziswe kunye nezixhobo zefilimu ezisekelwe kwibhayoloji ezigcina ukusebenza ngelixa zinciphisa impembelelo yendalo.

Luhlobo luni lwefilimu yeplastiki?

Iifilimu eziBanzi kakhulu

Iifilimu zePolyethylene zezona ntlobo zefilimu zeplastiki ezisetyenziswa kakhulu, zibiza ngaphezulu kwe-40% yefilimu yeplastiki iyonke esetyenziswayo. Iintlobo eziphambili kunye neempawu zeefilimu zePolyethylene:

1. Ifilimu yePolyethylene eNcinci (LDPE)

Iifilimu ze-LDPE zibonakaliswa bukuguquguquka kwazo, ukucaca kwazo, kunye neempawu ezingezizo iityhefu, ezingenavumba. Zinokumelana kakuhle namanzi, ukuthintela ukufuma, kunye nozinzo lweekhemikhali, nto leyo ezenza zifaneleke ukupakisha ukutya, amayeza, kunye neemveliso ezisetyenziswa imihla ngemihla. Iifilimu ze-LDPE nazo zineempawu ezilungileyo zokuvala ubushushu kwaye zihlala zisetyenziswa njengeeleya zokuvala ubushushu kwiifilimu ezidityanisiweyo. Nangona kunjalo, azinakumelana kakuhle nobushushu kwaye azifanelekanga ukupakisha ukupheka kubushushu obuphezulu.

2. Ifilimu yePolyethylene enoxinano oluphezulu (i-HDPE)

Iifilimu ze-HDPE ziqinile, zinombala okhanyayo, kwaye zimhlophe ngombala. Zibonisa amandla okuxinana aphezulu, ukumelana nokufuma, ukumelana nobushushu, kunye nokumelana neoyile xa kuthelekiswa ne-LDPE. I-HDPE ifanelekile kwiipakethe ezihlala ixesha elide kunye neefilimu zemizi-mveliso kodwa ayinakukhanya kwaye ayikhazimli kangako.

3. Ifilimu yePolyethylene eLinear Low-Density (LLDPE)

Iifilimu ze-LLDPE zidibanisa ukuguquguquka kwe-LDPE namandla e-HDPE, zibonelela ngeempawu ezibalaseleyo zokuzolula kunye nokumelana nokubhoboza. Zisetyenziswa kakhulu kwiifilimu zokuzolula, iifilimu zokuncitshiswa, kunye neefilimu zokusonga, nto leyo ezenza ukuba zilungele ukupakisha ngokuzenzekelayo ngesantya esiphezulu.

4. Ifilimu yePolyethylene yeMetallocene Linear Low-Density (mLLDPE)

Iifilimu ze-mLLDPE ziveliswa kusetyenziswa ii-catalysts ze-metallocene kwaye zinika amandla aphezulu okuchaphazeleka, amandla okukhupha uxinano, kunye nokucaca okungcono xa kuthelekiswa ne-LLDPE eqhelekileyo. Zivumela ukwehla kobukhulu befilimu ngaphezulu kwe-15%, ngaloo ndlela zinciphisa iindleko zezinto. I-mLLDPE isetyenziswa rhoqo kwiifilimu zegreenhouse, iifilimu zokupakisha ezinzima, iifilimu zokunciphisa, kunye nezixhobo zokupakisha eziphezulu.

Ezinye iiFilimu zePlastiki

1. Iifilimu zePolypropylene (PP): Ziphawuleka ngeqondo lazo eliphezulu lokunyibilika (160-170°C), nto leyo eyenza zifaneleke ukusetyenziswa ekugcwaliseni izinto ezishushu kunye nokupakisha okukhuselekileyo kwi-microwave. Iifilimu zePP zibonelela ngokumelana okuhle kweekhemikhali kwaye zihlala zisetyenziselwa ukupakisha ukutya okulula kunye nokusonga ukubulala iintsholongwane kwizixhobo zonyango.

2. Iifilimu zePolyvinyl Chloride (PVC): Zixabiseke kakhulu ngenxa yokucaca okugqwesileyo kunye nokuprintwa kodwa zijongene nokuncipha kokusetyenziswa ngenxa yenkxalabo yokusingqongileyo. Ezinye izicelo ziquka ukupakishwa kweeblister kunye neefilimu ezithile zokuncamathela5.

3. Iifilimu zePolyester (PET): Zinamandla aphezulu okutsalwa kunye nozinzo lobushushu, iifilimu zePET zibalulekile kwii-elektroniki eziguquguqukayo, iiteyiphu zemagnethi, kunye nokupakishwa kokutya okunomqobo ophezulu. I-PET (BOPET) ejolise kwi-Biaxial ibonisa ngokukodwa iimpawu zoomatshini kunye nezithintelo eziphuculweyo.

Iifilimu zePolymer ezikhethekileyo:

1. I-Polyamide (i-Nylon): Iipropati ezibalaseleyo zokuthintela ioksijini yokugcina ukutya

2. I-Polyvinylidene Chloride (PVDC): Ukusebenza kakuhle kokufuma kunye nokuthintela ioksijini

3. I-Polylactic Acid (PLA): Enye indlela entsha esekelwe kwi-bio enobume obuqinileyo, nangona ngokwesiko ithintelwe bubutyutyutyu—inkqubela phambili yakutshanje ivelise iifilimu ze-PLA eziguquguqukayo ngokufaka iiplastiki ze-polyether ngqo kwikhonkco le-polymer.

Iindlela Zokuvelisa Iifilimu Zeplastiki

1. Ukukhupha iFilimu Eqhumayo: Inkqubo ebalaseleyo kwiifilimu ze-PE, apho i-polymer enyibilikisiweyo ikhutshwa ngedayi ejikelezayo, ifuthwe ibe yiqamza, ize ipholiswe ukuze yenze ityhubhu enokuthi ithambe ibe yifilimu enamaleko amabini. Le ndlela inika iipropati zoomatshini ezilungelelanisiweyo kuzo zombini iindlela zomatshini kunye nezinqamlezileyo.

2. Ukukhutshwa kweFilimu yoMbane: I-Polymer melt ikhutshwa nge-flat die kwi-roll ebandayo, ivelisa iifilimu ezicacileyo kakhulu kunye nobukhulu obufanayo. Ziqhelekile kwiifilimu ze-PP kunye ne-PET apho iimpawu zokukhanya zibaluleke kakhulu.

3. Ukulungisa iiCalender: Ngokuyintloko isetyenziselwa iifilimu zePVC, apho i-polymer compound idlula kuthotho lwee-roller ezishushu ukuze kufezekiswe ulawulo oluchanekileyo lobukhulu. Iifilimu ezilungisiweyo zihlala zinesiphelo esiphezulu somphezulu kodwa azinazo iimpawu ezifanayo zoomatshini kububanzi.

4. Ukwenziwa kwesisombululo: Isetyenziselwa iifilimu ezikhethekileyo apho ukufana kakhulu okanye ubushushu obugqithisileyo kuthintela ukunyibilika. I-polymer iyanyibilika kwi-solvent, iphoswe ebhantini, ize yomiswe ukuze yenze ifilimu—exhaphakileyo kwiifilimu ezibolayo kunye nokusetyenziswa kwe-membrane.

5. Ukujongwa kweBiaxial: Iifilimu zoluliwe kumacala omabini oomatshini namacala anqamlezileyo, nokuba ngokulandelelana (ifreyimu ye-tenter) okanye ngaxeshanye (inkqubo yamaqamza), ziphucula kakhulu amandla, ukucaca, kunye neempawu zomqobo. Iifilimu ze-PP (BOPP) kunye ne-PET (BOPET) ezijolise kwi-Biaxial ziyimigangatho yoshishino yokupakisha okusebenzayo kakhulu.

Iindlela Ezintsha Nezinto Ezintsha Kwiifilimu Zeplastiki

Ishishini leefilimu zeplastiki liyatshintsha, ligxininisa kakhulu ekuzinzeni, ekusebenzeni, nasekusebenzeni kakuhle. Ezinye zeendlela eziphawulekayo ziquka:

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

2. Amanyathelo Ozinzo: Iinkampani ezifana neFox Packaging ziphumelele ekususeni iPFAS kuzo zonke iindlela zazo zokupakisha eziguquguqukayo, zihambelana nemithetho ebanzi kunye neendlela zoshishino. I-US FDA ifumene izibophelelo zokuzithandela zokususa iPFAS ekupakisheni ukutya, nto leyo enegalelo ekunciphiseni okukhulu ukuvezwa kwePFAS ekutyeni.

Izisombululo ezintsha zePFAS-Free processing helps plastic films from SILIKE

I-SILIKE isebenzisa indlela yokuthatha amanyathelo ngemveliso zayo zochungechunge lwe-SILIMER, inika izinto ezintshaIzixhobo zokulungisa iipolymer ezingenayo iPFAS (iiPPA)). Olu luhlu lwemveliso lubanzi lune-100% ye-PPAS-free PPAS, iimveliso ze-PPA ezingena-fluorine, kunye ne-PPAs-free fluorine-free PPAs masterbatches. Ngokususa isidingo se-fluorine additives, ezi mveliso ziphucula kakhulu inkqubo yokuvelisa ye-LLDPE, LDPE, HDPE, mLLDPE, PP, kunye neemveliso zefilimu. Zihambelana nemigaqo yamva nje yokusingqongileyo ngelixa zikwaphucula ukusebenza kakuhle kwemveliso, zinciphisa ixesha lokungasebenzi, kwaye ziphucula umgangatho wemveliso iyonke. Nge-SILIKE PFAS-free PPAs zizisa iingenelo zokugqibela zeMveliso, kubandakanya: ukususwa kokuqhekeka okunyibilikileyo (ulusu looshaka), ukuthamba okuphuculweyo, kunye nomgangatho womphezulu.

Ndikhangela iiindlela ezizinzileyo zokuvelisa iifilimu zeplastiki or I-PPA yee-masterbatches ezisebenzayo nezongeziweyo ze-polyethylene?  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.