Ifilimu yokupakisha yeplastikiyenye yezinto eziphambili zokupakisha eziguquguqukayo. Kukho iintlobo ezininzi zefilimu yokupakisha yeplastiki eneempawu ezahlukeneyo, kwaye ukusetyenziswa kwazo kuyahluka ngokweempawu ezahlukeneyo zefilimu yokupakisha.
Ifilimu yokupakisha inokuqina okuhle, ukumelana nokufuma, kunye nokusebenza kokutywinwa kobushushu, kwaye isetyenziswa ngokubanzi: Ifilimu yokupakisha yePVDC ilungele ukupakisha ukutya kwaye inokugcina ubutsha ixesha elide; Kwaye ifilimu yokupakisha ye-PVA ene-soluble yamanzi ingasetyenziselwa ngaphandle kokuvula kwaye ifakwe ngokuthe ngqo emanzini; Ifilimu yokupakisha yePC ayinavumba, ayinayo ityhefu, kunye nokungafihli kunye nokubengezela okufana nephepha leglasi, kwaye inokufakwa ngomphunga kwaye ifakwe inzalo phantsi kobushushu obuphezulu kunye noxinzelelo.
Kwiminyaka yakutshanje, imfuno yehlabathi yefilimu yokupakisha yeplastiki ibonise intsingiselo eqhubekayo yokunyuka, ngakumbi njengoko iifom zokupakisha ziqhubeka nokutshintsha ukusuka kwipakethe enzima ukuya kwipakethe ethambileyo. Le ikwayeyona nto iphambili eqhuba ukukhula kwemfuno yokupakisha imathiriyeli yefilimu. Ke, ngaba uyazazi iintlobo kunye nokusetyenziswa kwefilimu yokupakisha yeplastiki? Eli nqaku liza kwazisa ubukhulu becala iipropathi kunye nokusetyenziswa kweefilimu ezininzi zokupakisha zeplastiki
1. Ifilimu yokupakisha i-polyethylene
Ifilimu yokupakisha ye-PE yifilimu yokupakisha yeplastiki esetyenziswa ngokubanzi, ebalwa ngaphezulu kwe-40% yokusetyenziswa kwefilimu yokupakisha yeplastiki. Nangona ifilimu yokupakisha ye-PE ayifanelekanga ngokwembonakalo, amandla, njl., inokuqina okulungileyo, ukuxhathisa umswakama, kunye nokusebenza kokutywinwa kobushushu, kwaye kulula ukuyiqhuba kunye nokwenza ngexabiso eliphantsi, ngoko isetyenziswa ngokubanzi.
a. Ifilimu yokupakisha ye-polyethylene ephantsi.
Ifilimu yokupakisha ye-LDPE iveliswa ikakhulu ngokubumba i-extrusion blow kunye neendlela ze-T-mold. Yifilim yokupakisha ebhetyebhetye kwaye elubala engeyotyhefu kwaye engenavumba, enobunzima ngokubanzi phakathi kwe-0.02-0.1mm. Inokumelana kakuhle namanzi, ukumelana nokufuma, ukumelana nembalela, kunye nokuzinza kweekhemikhali. Isixa esikhulu sokupakishwa kobungqina bokufuma kunye nokupakishwa kokutya okukhenkcezisiweyo okusetyenziselwa ukutya, amayeza, iimfuno zemihla ngemihla, kunye neemveliso zetsimbi. Kodwa kwizinto ezinokufakwa okuphezulu kokufuma kunye neemfuno zokuxhathisa ukufuma, iifilimu zokupakisha ezingcono zokufuma kunye neefilimu ezihlanganisiweyo zokupakisha kufuneka zisetyenziselwe ukupakisha. Ifilimu yokupakisha ye-LDPE inokungena komoya okuphezulu, akukho kugcinwa kwevumba elimnandi, kunye nokunganyangeki kwe-oyile, iyenza ingafaneleki ukupakishwa ngokulula, okunencasa, kunye nokutya okunamafutha. Kodwa ukuphefumla kwayo kuyenza ilungele ukupakishwa ngokutsha kwezinto ezintsha ezifana neziqhamo kunye nemifuno. Ifilimu yokupakisha ye-LDPE inokugcina i-thermal efanelekileyo kunye neempawu zokutywinwa kobushushu obuphantsi, ngoko ke isetyenziswa ngokuqhelekileyo njengomaleko wokuncamathelisa kunye nomaleko wokutywina ubushushu kwiifilimu ezihlanganisiweyo zokupakisha. Nangona kunjalo, ngenxa yokunganyangeki kobushushu, ayinakusetyenziswa njengomgangatho wokutywina ubushushu kwiingxowa zokupheka.
b. Ifilimu yokupakisha ye-polyethylene ephezulu. Ifilimu yokupakisha ye-HDPE yifilimu yokupakisha eyomeleleyo engafihliyo enenkangeleko emhlophe yobisi kunye nokubengezela okulambatha komphezulu. Ifilimu yokupakisha ye-HDPE inamandla angcono okuqina, ukumelana nokufuma, ukumelana nobushushu, ukuxhathisa kweoli, kunye nokuzinza kweekhemikhali kunefilimu yokupakisha ye-LDPE. Isenokuvalwa bubushushu, kodwa ukungafihli kwayo akulunganga njenge-LDPE. I-HDPE inokwenziwa ibe yifilim yokupakisha ebhityileyo enobunzima obuyi-0.01mm. Inkangeleko yayo ifana kakhulu nephepha lesilika elicekethekileyo, kwaye livakala likhululekile xa ulibamba, elikwabizwa ngokuba liphepha njengefilimu. Inamandla amahle, ukuqina, kunye nokuvuleka. Ukuphucula iphepha elifana nokuziva kunye nokunciphisa iindleko, inani elincinci le-calcium carbonate ekhaphukhaphu linokongezwa. Ifilimu yephepha leHDPE isetyenziswa ikakhulu ukwenza iibhegi ezahlukeneyo zokuthenga, iingxowa zenkunkuma, iingxowa zokupakisha iziqhamo, kunye neengxowa zokupakisha ezahlukeneyo zokutya. Ngenxa yokungangeni komoya kakubi kunye nokungabikho kokugcinwa kwevumba elimnandi, ixesha lokugcinwa kokutya okupakishweyo alikude. Ukongeza, ifilimu yokupakisha ye-HDPE ingasetyenziselwa njengomaleko wokutywina ubushushu kwiingxowa zokupheka ngenxa yokumelana nobushushu.
c. Ifilimu yokupakisha ye-polyethylene ephantsi yoxinaniso.
Ifilimu yokupakisha ye-LLDPE luhlobo elisandula ukuphuhliswa lwefilimu yokupakisha ye-polyethylene. Xa kuthelekiswa nefilimu yokupakisha ye-LDPE, ifilimu yokupakisha ye-LLDPE inokuqina okuphezulu kunye namandla eempembelelo, amandla okukrazula, kunye nokuchasana nokuhlatywa. Ngamandla afanayo kunye nokusebenza njengefilimu yokupakisha ye-LDPE, ubukhulu befilimu yokupakisha ye-LLDPE inokuncitshiswa ukuya kwi-20-25% yefilimu yokupakisha ye-LDPE, ngaloo ndlela inciphisa kakhulu iindleko. Nangona isetyenziswe njengengxowa yokupakisha enzima, ubukhulu bayo bufuna kuphela i-0.1mm ukuhlangabezana neemfuno, ezinokuthi zithathe indawo ye-polymer high-density polyethylene. Ke ngoko, i-LLDPE ifaneleke kakhulu ukupakishwa kweemfuno zemihla ngemihla, ukupakishwa kokutya okukhenkcezisiweyo, kwaye ikwasetyenziswa ngokubanzi njengeengxowa zokupakisha ezinzima kunye neengxowa zenkunkuma.
2. Ifilimu yokupakisha yePolypropylene
Ifilimu yokupakisha yePP yahlulwe yaba yifilimu yokupakisha enganwenwanga kunye nefilimu yokupakisha eyoluliweyo ye-biaxially. Iindidi ezimbini zefilimu yokupakisha zinomehluko omkhulu ekusebenzeni, ngoko kufuneka zithathwe njengeentlobo ezimbini ezahlukeneyo zefilimu yokupakisha.
1) Ifilimu yokupakisha ye-polypropylene engabonakaliyo.
Ifilimu yokupakisha yepolypropylene enganwenwanga ibandakanya ifilimu yokupakisha yepolypropylene evuthelweyo (IPP) eveliswe yindlela yokubumba i-extrusion blow kunye nefilimu yokupakisha yepolypropylene ekhutshweyo (CPP) eveliswe yindlela ye-T-mold. Ukungafihli kunye nokuqina kwefilimu yokupakisha yePP kubi; Kwaye inokukhanya okuphezulu kunye nokuqina okuhle. Ifilimu yokupakisha ye-CPP inokucaca ngakumbi kunye nokucwebezela, kwaye ukubonakala kwayo kufana nephepha leglasi. Xa kuthelekiswa nefilimu yokupakisha ye-PE, ifilimu yokupakisha ye-polypropylene enganwenwanga inokucaca okungcono, i-glossiness, ukumelana nokufuma, ukumelana nobushushu, kunye nokuchasana kweoli; Amandla aphezulu oomatshini, ukuxhathisa okulungileyo kokukrazula, ukuxhathisa ukubhoboza, kunye nokumelana nokunxiba; Kwaye ayinayo ityhefu kwaye ayinavumba. Ke ngoko, isetyenziselwa kakhulu ukupakisha ukutya, amayeza, amalaphu kunye nezinye izinto. Kodwa ayinakuxhathisa kwimbalela kwaye iba brittle ku 0-10 ℃, ngoko ke ayinakusetyenziselwa ukupakisha ukutya okukhenkcezisiweyo. Ifilimu yokupakisha ye-polypropylene engabonakaliyo inokumelana nokushisa okuphezulu kunye nokusebenza kakuhle kokutywinwa kobushushu, ngoko isetyenziswa ngokuqhelekileyo njengomgangatho wokutywina ukushisa kwiingxowa zokupheka.
2) Ifilimu yokupakisha ye-polypropylene ejoliswe kwi-Biaxially (BOPP).
Xa kuthelekiswa nefilimu yokupakisha ye-polypropylene engolulwanga, ifilimu yokupakisha ye-BOPP ikakhulu inezi mpawu zilandelayo: ① Ukuphuculwa kokungafihli kunye nokumenyezela, xa kuthelekiswa nephepha leglasi; ② Amandla omatshini ayanda, kodwa ubude buyancipha; ③ Ukuphucula ukumelana nokubanda kwaye akukho brittleness naxa isetyenziswe kwi -30~-50 ℃; ④ Ukungena kokufuma kunye nokungena komoya kuncitshiswe malunga nesiqingatha, kwaye umphunga we-organic permeability nawo uyancitshiswa ukuya kumaqondo ahlukeneyo; ⑤ Ifilimu enye ayinakutywinwa ngokuthe ngqo ubushushu, kodwa ukusebenza kwayo kokutywinwa kobushushu kunokuphuculwa ngokuncamathisela okunamathelisa kunye nezinye iifilimu zokupakisha zeplastiki.
Ifilimu yokupakisha yeBOPP luhlobo olutsha lwefilimu yokupakisha ephuhliswe ukuthatha indawo yephepha leglasi. Ineempawu zamandla omatshini aphezulu, ukuqina okuhle, ukungafihli kakuhle kunye nokucwebezela. Ixabiso layo li malunga ne-20% ngaphantsi kwephepha leglasi. Ke ithathe indawo okanye ithathe indawo yephepha leglasi kwipakethe yokutya, iyeza, imidiza, amalaphu, kunye nezinye iimveliso. Kodwa ukunwebeka kwayo kuphezulu kwaye akunakusetyenziselwa ukupakisha iilekese zokusonta. Ifilimu yokupakisha ye-BOPP isetyenziswa ngokubanzi njengesiseko semathiriyeli yeefilimu ezihlanganisiweyo zokupakisha. Iifilimu zokupakisha ezihlanganisiweyo ezenziwe ngefoyile ye-aluminium kunye nezinye iifilimu zokupakisha zeplastiki zinokuhlangabezana neemfuno zokupakisha izinto ezahlukeneyo kwaye zisetyenziswe ngokubanzi.
3. Ifilimu yokupakisha yePolyvinyl chloride
Ifilimu yokupakisha ye-PVC yahlulwe yaba yifilimu ethambileyo yokupakisha kunye nefilimu yokupakisha enzima. Ubude, ukuxhathisa kweenyembezi, kunye nokumelana nokubanda kwefilimu yokupakisha yePVC ethambileyo ilungile; Kulula ukuprinta kunye nokutywinwa kobushushu; Ingenziwa kwifilimu yokupakisha ecacileyo. Ngenxa yevumba le-plasticizers kunye nokufuduka kweeplasticizers, ifilimu yokupakisha ye-PVC ethambileyo ayifanelekanga ukupakishwa kokutya. Kodwa ifilimu yokupakisha yePVC ethambileyo eveliswe yindlela yangaphakathi yeplastiki ingasetyenziselwa ukupakisha ukutya. Ngokubanzi, ifilimu yokupakisha eguquguqukayo ye-PVC isetyenziswa ikakhulu kwiimveliso zamashishini kunye nokungapakishwa kokutya.
Ifilimu yokupakisha ye-PVC enzima, eyaziwa njengephepha leglasi lePVC. Ukucaca okuphezulu, ukuqina, ukuqina okulungileyo, kunye nokujija okuzinzileyo; Inokuqina kakuhle komoya, igcina ivumba elimnandi, kunye nokumelana nokufuma okuhle; Ukusebenza ngokugqwesileyo kokushicilela, kunokuvelisa ifilimu yokupakisha engeyiyo inetyhefu. Isetyenziselwa ikakhulu ukupakishwa okujijekileyo kweelekese, ukupakishwa kwamalaphu kunye nempahla, kunye nefilimu yangaphandle yokupakisha yecuba kunye neebhokisi zokupakisha zokutya. Nangona kunjalo, i-PVC eqinile inokumelana nokubandayo kwaye iba yi-brittle kumaqondo aphantsi, okwenza ukuba ingafaneleki njengento yokupakisha ukutya okunomkhenkce.
4. Ifilimu yokupakisha yePolystyrene
Ifilimu yokupakisha ye-PS inokucaca okuphezulu kunye nokucwebezela, ukubonakala okuhle, kunye nokusebenza kakuhle kokushicilela; Ukufunxwa kwamanzi aphantsi kunye nokungena okuphezulu kwiigesi kunye nomphunga wamanzi. Ifilimu yokupakisha ye-polystyrene engabonakaliyo ilukhuni kwaye i-brittle, inokwandiswa okuphantsi, amandla okuqina, kunye nokuchasana kwempembelelo, ngoko ke ayifane isetyenziswe njengento yokupakisha eguquguqukayo. Izinto eziphambili zokupakisha ezisetyenziswayo yi-biaxially oriented polystyrene (BOPS) ifilimu yokupakisha kunye nefilimu yokupakisha efunxa ubushushu.
Ifilimu yokupakisha ye-BOPS eveliswe ngokunwenwa kwe-biaxial iphucule kakhulu iipropathi zayo zomzimba kunye nezomatshini, ngakumbi ubude, amandla empembelelo, kunye nokuqina, ngelixa igcina ukungafihli kunye nokuqaqamba kwayo kwasekuqaleni. Ukuphefumula okulungileyo kwefilimu yokupakisha ye-BOPS kwenza ukuba ifaneleke kakhulu ukupakisha ukutya okutsha okufana neziqhamo, imifuno, inyama kunye nentlanzi, kunye neentyatyambo.
5. Ifilimu yokupakisha yePolyvinylidene chloride
Ifilimu yokupakisha ye-PVDC yifilimu yokupakisha eguquguqukayo, ecacileyo, kunye nezithintelo eziphezulu. Inokumelana nokufuma, ukuxinana komoya, kunye neempawu zokugcina ivumba; Kwaye inokumelana okubalaseleyo neeasidi ezomeleleyo, iialkalis ezomeleleyo, iikhemikhali, neeoyile; Ifilimu yokupakisha ye-PVDC engabonakaliyo ingatywinwa ubushushu, obufaneleke kakhulu ukupakisha ukutya kwaye inokugcina incasa yokutya ingatshintshi ixesha elide.
Nangona ifilimu yokupakisha ye-PVDC inamandla afanelekileyo omatshini, ukuqina kwayo kumbi, ithambe kakhulu kwaye ithanda ukuncamathela, kwaye ukusebenza kwayo kumbi. Ukongeza, i-PVDC ine-crystallinity eyomeleleyo, kwaye ifilimu yayo yokupakisha ithanda ukugqobhoza okanye i-microcracks, kunye nexabiso layo eliphezulu. Ke ngoku, ifilimu yokupakisha ye-PVDC ayiqhelekanga ukusetyenziswa kwifom yefilimu enye kwaye ikakhulu isetyenziselwa ukwenza ifilimu ehlanganisiweyo yokupakisha.
6. Ifilimu yokupakisha ye-ethylene vinyl acetate copolymer
Ukusebenza kwefilimu yokupakisha ye-EVA ihambelana nomxholo we-vinyl acetate (VA). Okukhona uphezulu umxholo we-VA, kokukhona ukuqina, ukuxhathisa kokuqhekeka koxinzelelo, ukumelana nobushushu obuphantsi, kunye nokusebenza kokutywinwa kobushushu kwefilimu yokupakisha. Xa umxholo we-VA ufikelela kwi-15% ~ 20%, ukusebenza kwefilimu yokupakisha kusondele kwifilimu yokupakisha ye-PVC ethambileyo. Ubuncinci umxholo we-VA, i-elastic encinci yefilimu yokupakisha, kwaye ukusebenza kwayo kusondele kwifilimu yokupakisha ye-LDPE. Umxholo we-VA ngokubanzi ifilimu yokupakisha ye-EVA yi-10% ~ 20%.
Ifilimu yokupakisha ye-EVA inobushushu obuphantsi bokutywinwa kobushushu obuphantsi kunye neempawu zokutywina ezifakiweyo, iyenza ibe yifilimu ebalaseleyo yokutywina kwaye iqhele ukusetyenziswa njengomaleko wokutywina ubushushu kwiifilimu ezihlanganisiweyo zokupakisha. Ukumelana nobushushu befilimu yokupakisha ye-EVA imbi, kunye nobushushu bokusebenzisa obuyi-60 ℃. Ukungangeni komoya kuyo kubi, kwaye ithanda ukuncamathela kwaye ivumba. Ke ifilimu yokupakisha ye-EVA enomqolo omnye ayisetyenziswa ngokuthe ngqo ukupakisha ukutya.
7. Ifilimu yokupakisha utywala yePolyvinyl
Ifilimu yokupakisha ye-PVA yahlulwe yaba yifilimu yokupakisha enganyangekiyo emanzini kunye nefilimu yokupakisha enyibilikayo emanzini. Ifilimu yokupakisha enganyangekiyo emanzini yenziwe kwi-PVA ene-polymerization degree engaphezulu kwe-1000 kunye ne-saponification epheleleyo. Ifilimu yokupakisha enyibilikayo emanzini yenziwe kwi-PVA ngokuyinxenye ye-saponified kunye neqondo eliphantsi le-polymerization. Ifilimu yokupakisha ephambili esetyenziswayo yifilimu yokupakisha ye-PVA enganyangekiyo ngamanzi.
Ifilimu yokupakisha ye-PVA inokucaca kakuhle kunye nokucwebezela, akukho lula ukuqokelela umbane ongatshintshiyo, akukho lula ukubhengeza uthuli, kwaye inomsebenzi omhle wokushicilela. Inokuqina komoya kunye nokugcinwa kwevumba kwindawo eyomileyo, kunye nokuchasana kwe-oyile elungileyo; Unamandla omatshini alungileyo, ukuqina, kunye noxinzelelo lokuchasa ukuqhekeka; Inokuvalwa ubushushu; Ifilimu yokupakisha ye-PVA inokungena okuphezulu kokufuma, ukufunxa okuqinileyo, kunye nobungakanani obungazinzanga. Ke, i-polyvinylidene chloride coating, ekwabizwa ngokuba yi-K, iqhele ukusetyenziswa. Le filimu yokupakisha i-PVA inokugcina umoya obalaseleyo, ukugcinwa kwevumba elimnandi, kunye nokuxhathisa ukufuma naphantsi kokufuma okuphezulu, iyenza ifaneleke kakhulu ukupakisha ukutya. Ifilimu yokupakisha ye-PVA idla ngokusetyenziswa njengomaleko wesithintelo kwifilimu ehlanganisiweyo yokupakisha, esetyenziswa ikakhulu ukupakisha ukutya okukhawulezayo, iimveliso zenyama, iimveliso zekhrimu kunye nokunye ukutya. Ifilimu enye yePVA ikwasetyenziswa ngokubanzi ukupakisha amalaphu kunye nempahla.
Ifilim yokupakisha enyibilikayo yePVA ingasetyenziselwa ukulinganisa ukupakishwa kweemveliso zekhemikhali ezinjengezibulali ntsholongwane, izicoci, iiarhente zokuthambisa, iidayi, izibulali zinambuzane, kunye neengxowa zokuvasa iimpahla zesigulana. Inokufakwa ngokuthe ngqo emanzini ngaphandle kokuvula.
8. Ifilimu yokupakisha inayiloni
Ifilimu yokupakisha inayiloni ikakhulu ibandakanya iindidi ezimbini: ifilimu yokupakisha eyoluliweyo ye-biaxially kunye nefilimu yokupakisha enganwenwanga, phakathi kwayo ifilimu yokupakisha enayiloni ye-biaxially (BOPA) isetyenziswa kakhulu. Ifilim yokupakisha enayiloni engolulwanga inobude obubalaseleyo kwaye isetyenziselwa ikakhulu ukupakishwa kwevacuum eyolulayo.
Ifilimu yokupakisha inayiloni yifilimu yokupakisha enzima kakhulu engeyotyhefu, engenavumba, ecacileyo, ecwebezelayo, engatyekelekanga ekuqokeleleni umbane ongatshintshiyo, kwaye inomsebenzi olungileyo wokushicilela. Inamandla amakhulu omatshini, amandla aphindwe kathathu efilimu yokupakisha ye-PE, kunye nokuxhathisa okugqwesileyo kokunxiba kunye nokumelana nokugqobhozwa. Ifilimu yokupakisha inayiloni inokumelana nobushushu okulungileyo, ukumelana nokubila, kunye nokumelana neoyile, kodwa kunzima ukutywina ubushushu. Ifilimu yokupakishwa yenayiloni inokuqina komoya okulungileyo kwindawo eyomileyo, kodwa inobumanzi obuphezulu obunokungeneka kunye nokufunxa okuqinileyo kwamanzi. Kwiimeko ezingqongileyo zokufuma okuphezulu, uzinzo lwe-dimensional lubuthathaka kwaye ukungangeni komoya kuyehla kabukhali. Ke ngoko, i-polyvinylidene chloride coating (KNY) okanye i-composite kunye nefilimu yokupakisha ye-PE ihlala isetyenziselwa ukuphucula ukumelana namanzi, ukumelana nokufuma, kunye nokusebenza kokutywinwa kobushushu. Le filimu ye-NY/PE ehlanganisiweyo yokupakisha isetyenziswa kakhulu kwipakethe yokutya. Ukupakishwa kwenayiloni kusetyenziswa kakhulu kwimveliso yeefilimu ezihlanganisiweyo zokupakisha kwaye njengenxalenye engaphantsi kweefilimu zokupakisha ezine-aluminium.
Ifilimu yokupakisha inayiloni kunye nefilimu ehlanganisiweyo yokupakisha isetyenziswa ikakhulu ukupakisha ukutya okunamafutha, ukutya okuqhelekileyo, ukutya okunomkhenkce, kunye nokutya okushushu. Ifilimu yokupakishwa yenayiloni engolulwanga, ngenxa yobude bayo obuphezulu, ingasetyenziselwa ukupakishwa kwevacuum yenyama enencasa, inyama eninzi yamathambo kunye nokunye ukutya.
9. I-ethylene vinyl alcohol copolymerukupakisha ifilimu
Ifilimu yokupakisha ye-EVAL luhlobo olutsha lwefilimu yokupakisha yesithintelo ephezulu ephuhliswe kwiminyaka yakutshanje. Inokubonakala kakuhle, isithintelo seoksijini, ukugcinwa kwevumba elimnandi, kunye nokumelana neoyile. Kodwa i-hygroscopicity yayo yomelele, enciphisa iimpawu zayo zokuthintela emva kokufunxa umswakama.
Ifilimu yokupakisha ye-EVAL ihlala yenziwe ifilimu ehlanganisiweyo yokupakisha kunye nezinto ezixhathisa ukufuma, ezisetyenziselwa ukupakisha iimveliso zenyama ezinje ngeesoseji, ham, kunye nokutya okukhawulezayo. Ifilimu enye ye-EVAL ingasetyenziselwa ukupakisha iimveliso zosinga kunye neemveliso zoboya.
10. Ifilimu yokupakisha yePolyester yenziwe ngefilimu yokupakisha ye-biaxially oriented polyester (BOPET).
Ifilimu yokupakisha ye-PET luhlobo lwefilimu yokupakisha kunye nokusebenza kakuhle. Inokubonakala kakuhle kunye nokukhazimla; Inokuqina kakuhle komoya kunye nokugcina ivumba elimnandi; Ukumelana nokunyakama okuphakathi, kunye nokuncipha kokungena kokufuma kumaqondo obushushu aphantsi. Iipropathi zoomatshini zefilimu yokupakisha ye-PET zigqwesile, kwaye amandla ayo kunye nokuqina kweyona nto ibalaseleyo kuzo zonke iiplastiki ze-thermoplastic. Amandla ayo okuqina kunye namandla empembelelo aphezulu kakhulu kunalawo efilimu yokupakisha ngokubanzi; Kwaye inobungqongqo obuhle kunye nobukhulu obuzinzile, obulungele ukusetyenzwa okwesibini njengokushicilela kunye neengxowa zephepha. Ifilimu yokupakisha ye-PET inobushushu obugqwesileyo kunye nokumelana nokubanda, kunye nokuchasana kweekhemikhali kunye neoyile. Kodwa ayixhathisi kwialkali eyomeleleyo; Kulula ukuthwala umbane ongashukumiyo, akukho ndlela ifanelekileyo yokuchasana ne-static okwangoku, ke ingqwalasela kufuneka ihlawulwe xa kupakishwa izinto ezinomgubo.
Ukutywinwa kobushushu befilimu yokupakisha ye-PET kunzima kakhulu kwaye kuyabiza ngoku, kunqabile ukuba kusetyenziswe ifilimu enye. Uninzi lwazo ludityaniswe nefilimu yokupakisha ye-PE okanye yePP eneempawu ezintle zokutywinwa kobushushu okanye zigqunywe nge-polyvinylidene chloride. Le filimu ihlanganisiweyo yokupakisha esekwe kwifilimu yokupakisha ye-PET yinto efanelekileyo yokusebenza komatshini wokupakisha kwaye isetyenziswa kakhulu ekupakishweni kokutya okunje ngokutshisa, ukubhaka, kunye neqhwa.
11. Ifilimu yokupakisha yePolycarbonate
Ifilimu yokupakisha ye-PC ayinavumba kwaye ayinayo inetyhefu, kunye nokucaca kunye nokukhazimla okufana nephepha leglasi, kwaye amandla ayo afaniswa nefilimu yokupakisha ye-PET kunye nefilimu yokupakisha ye-BONY, ngakumbi ukuchasana kwayo okubalaseleyo. Ifilimu yokupakisha yePC inokugcina ivumba elimnandi, ukuqina komoya okulungileyo kunye nokumelana nokufuma, kunye nokuchasana okuhle kwe-UV. Inokumelana neoli elungileyo; Ikwanayo nobushushu obuhle kunye nokumelana nokubanda. Inokutshizwa kwaye ifakwe inzalo phantsi kobushushu obuphezulu kunye noxinzelelo oluphezulu; Ukuchasana nobushushu obuphantsi kunye nokumelana nomkhenkce kungcono kunefilimu yokupakisha ye-PET. Kodwa ukusebenza kwayo kokutywinwa kobushushu kubi.
Ifilimu yokupakisha yePC yeyona nto ifanelekileyo yokupakisha ukutya, enokusetyenziselwa ukupakisha ukutya okufakwe umphunga, okunomkhenkce kunye nokunencasa. Okwangoku, ngenxa yexabiso layo eliphezulu, isetyenziselwa ikakhulu ukupakisha iipilisi zamachiza kunye nokupakishwa okunyumba.
12. Ifilimu yokupakisha ye-acetate cellulose
Ifilimu yokupakisha ye-CA iyabonakala, iyakhazimla, kwaye inomphezulu ogudileyo. Iqinile, izinzile ngokobukhulu, akulula ukuyiqokelela umbane, kwaye inokuqhuba kakuhle; Kulula ukudibanisa kwaye inokuprintwa okulungileyo. Kwaye inokumelana namanzi, ukumelana nokusonga, kunye nokuqina. I-air permeability kunye nomswakama wefilimu yokupakisha ye-CA iphezulu kakhulu, engasetyenziselwa "ukuphefumula" ukupakishwa kwemifuno, iziqhamo kunye nezinye izinto.
Ifilimu yokupakisha ye-CA isetyenziswa ngokuqhelekileyo njengomaleko wangaphandle wefilimu ehlanganisiweyo yokupakisha ngenxa yenkangeleko yayo entle kunye nokulula kokushicilela. Ifilimu yayo ehlanganisiweyo yokupakisha isetyenziselwa ukupakisha iziyobisi, ukutya, izithambiso kunye nezinye izinto.
13. I-polymer edibeneyo ye-Ionicukupakisha ifilimu roll
Ukungafihli kunye nokucwebezela kwefilimu yokupakisha ye-ion ebontshwe yipolymer ingcono kuneyefilimu ye-PE, kwaye ayinayo ityhefu. Inokuqina kakuhle komoya, ukuthamba, ukuqina, ukumelana nokugqobhoza, kunye nokumelana ne-oyile. Ifanelekile ukupakishwa kwezinto ezi-angular kunye nobushushu obuncitshisiweyo bokupakishwa kokutya. Ukusebenza kwayo kokutywinwa kobushushu obuphantsi kobushushu buhle, uluhlu lobushushu lokutywinwa kobushushu lubanzi, kwaye ukusebenza kokutywinwa kobushushu kuselungile nokuba kufakwe, ngoko ke kusetyenziswa ngokuqhelekileyo njengomaleko wokutywina ubushushu kwiifilimu zokupakisha ezihlanganisiweyo. Ukongeza, iipolymers ezibotshiweyo ze-ion zinokubambelela kakuhle kwe-thermal kwaye zinokudityaniswa kunye nezinye iiplastiki ukuvelisa iifilimu zokupakisha ezidibeneyo.
Ixesha lokuposa: Feb-11-2025