Izikhwama zesikhwama esibuyisela emuva zavela ocwaningweni nasekuthuthukisweni kwamathini athambile maphakathi nekhulu lama-20. Amathini athambile asho ukupakishwa okwenziwe ngokuphelele ngezinto ezithambile noma iziqukathi ezingaqinile lapho okungenani ingxenye yodonga noma ikhava yesiqukathi yenziwe ngezinto zokupakisha ezithambile, okuhlanganisa izikhwama ezibuyisela emuva, amabhokisi okubuyisela emuva, amasoseji aboshiwe, njll. Ifomu eliyinhloko elisetshenziswa njengamanje izikhwama zokushisa ezisezingeni eliphezulu ezenziwe ngaphambilini. Uma kuqhathaniswa nensimbi yendabuko, ingilazi namanye amathini aqinile, izikhwama zokubuyisela emuva zinezici ezilandelayo:
●Ubukhulu bezinto zokupakisha zincane, futhi ukudluliswa kokushisa kuyashesha, okunganciphisa isikhathi sokuvala inzalo. Ngakho-ke, umbala, iphunga kanye nokunambitheka kokuqukethwe kushintsha kancane, futhi ukulahlekelwa kwezakhi kuncane.
● Izinto zokupakisha zinesisindo esincane futhi zincane ngosayizi, ezingalondoloza izinto zokupakisha, futhi izindleko zokuthutha ziphansi futhi zilula.
●Ingakwazi ukuphrinta amaphethini amahle.
●Inokuphila kweshalofu ende (izinyanga ezingu-6-12) ekamelweni lokushisa futhi kulula ukuyivala nokuyivula.
●Asikho isiqandisi esidingekayo, ukonga ezindlekweni zesiqandisi
●Ilungele ukupakisha izinhlobo eziningi zokudla, njengenyama nezinkukhu, imikhiqizo yasemanzini, izithelo nemifino, ukudla okuhlukahlukene okusanhlamvu, namasobho.
●Ingashiswa kanye nephakeji ukuze kuvinjelwe ukunambitheka kwe-flavour ukuthi ingalahleki, kulungele ikakhulukazi umsebenzi wasensimini, ukuvakasha, nokudla kwezempi.
Ukukhiqizwa okuphelele kwezikhwama zokupheka, okuhlanganisa uhlobo lokuqukethwe, ukuqinisekiswa kwekhwalithi yokuqonda okuphelele kwesakhiwo somkhiqizo, i-substrate noyinki, ukukhetha okunamathelayo, inqubo yokukhiqiza, ukuhlolwa komkhiqizo, ukupakisha kanye nokulawula inqubo yokuvala inzalo, njll., ngenxa yesikhwama sokupheka. idizayini yesakhiwo somkhiqizo iwumongo, ngakho-ke lokhu kuwukuhlaziya okubanzi, hhayi nje ukuhlaziya ukucushwa kwe-substrate yomkhiqizo, kanye nokuhlaziya ngokuqhubekayo ukusebenza kwezinhlobonhlobo. imikhiqizo yesakhiwo, ukusetshenziswa, Ukuphepha kanye nenhlanzeko, umnotho nokunye.
1. Ukonakala Kokudla Nokuvala inzalo
Abantu bahlala endaweni ezungezile yamagciwane, i-biosphere yomhlaba wonke ikhona ku-microorganisms ezingenakubalwa, ukudla ekukhiqizeni kwe-microbial okungaphezu komkhawulo othile, ukudla kuzokonakala futhi kulahlekelwe ukudla.
Isizathu sokubola kokudla kwamagciwane avamile yi-pseudomonas, i-vibrio, kokubili ukumelana nokushisa, i-enterobacteria ekushiseni okungu-60 ℃ imizuzu engu-30 ifile, i-lactobacilli ezinye izinhlobo zingamelana no-65 ℃, imizuzu engu-30 yokushisa. I-Bacillus ingakwazi ukumelana no-95-100 ℃, ukushisa imizuzu embalwa, abambalwa bangakwazi ukumelana no-120 ℃ ngaphansi kwemizuzu engu-20 yokushisa. Ngaphandle kwamagciwane, kukhona nenani elikhulu lesikhunta ekudleni, okuhlanganisa i-Trichoderma, imvubelo nokunye. Ngaphezu kwalokho, ukukhanya, i-oksijeni, izinga lokushisa, umswakama, inani le-PH nokunye kungabangela ukubola kokudla, kodwa isici esiyinhloko ama-microorganisms, ngakho-ke, ukusetshenziswa kokupheka okushisayo okushisa ukubulala ama-microorganisms kuyindlela ebalulekile yokugcina ukudla isikhathi eside. isikhathi.
Ukwenziwa inzalo emikhiqizweni yokudla kungahlukaniswa ngo-72 ℃ pasteurization, 100 ℃ inzalo ebilisiwe, 121 ℃ inzalo yokupheka eshisa kakhulu, 135 ℃ inzalo yokupheka eshisa kakhulu kanye no-145 ℃ i-ultra-high-temperature inzalo, sebenzisa inzalo esheshayo kanye nomkhiqizi -standard lokushisa inzalo mayelana 110 ℃. Ngokwemikhiqizo ehlukene yokukhetha izimo zokuvala inzalo, okunzima kakhulu ukubulala izimo zokuvala inzalo zeClostridium botulinum kukhonjiswe kuThebula 1.
Ithebula 1 Isikhathi sokufa kwezinhlamvu zeClostridium botulinum maqondana nezinga lokushisa
izinga lokushisa℃ | 100 | 105 | 110 | 115 | 120 | 125 | 130 | 135 |
Isikhathi sokufa (imizuzu) | 330 | 100 | 32 | 10 | 4 | 80s | 30s | 10s |
2.Izici ze-Steamer Bag Raw Material
Izikhwama zezikhwama zokushisa eziphakeme zokupheka ezifika nalezi zinto ezilandelayo:
Umsebenzi wokupakisha ohlala isikhathi eside, isitoreji esizinzile, ukuvimbela ukukhula kwebhaktheriya, ukumelana nokushisa okuphezulu kokunciphisa inzalo, njll.
Kuyinto enhle kakhulu eyinhlanganisela efanele ukupakishwa kokudla osheshayo.
Ukuhlolwa kwesakhiwo esijwayelekile kwe-PET/okunamathelayo/i-aluminium foil/iglue enamathelayo/inayiloni/RCPP
Isikhwama esibuyisela izinga lokushisa eliphezulu esinesakhiwo esinezendlalelo ezintathu i-PET/AL/RCPP
UMYALELO WOKUMSEBENZI
(1) Ifilimu ye-PET
Ifilimu ye-BOPET ineyodwaamandla aphezulu kakhulu wokushubayawo wonke amafilimu epulasitiki, futhi angahlangabezana nezidingo zemikhiqizo emincane kakhulu enokuqina okuphezulu nobulukhuni.
Kuhle kakhulu ukumelana nokushisa nokushisa.Ibanga lokushisa elisebenzayo lefilimu ye-BOPET lisuka ku-70 ℃-150 ℃, elingagcina izakhiwo ezinhle kakhulu ezibonakalayo ebangeni elibanzi lokushisa futhi lilungele ukupakishwa okuningi komkhiqizo.
Ukusebenza okuhle kakhulu kwesithiyo.Inokusebenza okuhle kakhulu okuhlanganisa amanzi nomoya, ngokungafani nenayiloni ethinteka kakhulu umswakama, ukumelana kwayo namanzi kufana ne-PE, futhi i-coefficient yayo yokungena emoyeni incane kakhulu. Inempahla evimbelayo ephezulu kakhulu emoyeni nasephunga, futhi ingenye yezinto zokugcina iphunga elimnandi.
Ukumelana namakhemikhali, ukumelana namafutha namafutha, izincibilikisi eziningi kanye nama-acids acwebileyo nama-alkali.
(2) BOPA FILM
Amafilimu e-BOPA anokuqina okuhle kakhulu.Amandla aqinile, amandla okudabula, amandla okuthonya namandla okuphuka kuphakathi kwezinto ezihamba phambili ezintweni zepulasitiki.
Ukuguquguquka okuvelele, ukumelana ne-pinhole, akulula kokuqukethwe kokubhoboza, kuyisici esikhulu se-BOPA, ukuguquguquka okuhle, kodwa futhi kwenza ukupakishwa kuzizwe kumnandi.
Izakhiwo ezinhle zokuvimbela, ukugcinwa kwephunga elimnandi, ukumelana namakhemikhali ngaphandle kwama-asidi aqinile, ikakhulukazi ukumelana nowoyela okuhle kakhulu.
Ngobubanzi obubanzi bamazinga okushisa okusebenza kanye nendawo yokuncibilika engu-225°C, ingasetshenziswa isikhathi eside phakathi kuka -60°C no-130°C. Izici zemishini ze-BOPA zigcinwa emazingeni okushisa aphansi naphezulu.
Ukusebenza kwefilimu ye-BOPA kuthinteka kakhulu umswakama, futhi kokubili ukuzinza kwe-dimensional kanye nezindawo zokuvimbela zithintwa umswakama.Ngemva kokuba ifilimu ye-BOPA ingaphansi komswakama, ngaphezu kokushwabana, ngokuvamile izokwelula ngokuvundlile. Ukufinyezwa kwe-longitudinal, izinga le-elongation lifika ku-1%.
(3) Ifilimu ye-CPP yefilimu ye-polypropylene, ukumelana nokushisa okuphezulu, ukusebenza kahle kokuvalwa kokushisa;
Ifilimu ye-CPP eyifilimu ye-polypropylene, ifilimu yokupheka evamile ye-CPP kusetshenziswa izinto ezingasetshenzisiwe ze-copolypropylene ezingahleliwe, isikhwama sefilimu esenziwe ngo-121-125 ℃ ukuvalwa kwe-high-temperature kungamelana nemizuzu engama-30-60.
Ifilimu yokupheka eshisa kakhulu ye-CPP isebenzisa i-block copolypropylene izinto zokusetshenziswa, ezenziwe ngezikhwama zefilimu zingamelana no-135 ℃ ukuvalwa kokushisa okuphezulu, imizuzu engama-30.
Izidingo zokusebenza yilezi: Izinga lokushisa lephoyinti lokuthambisa i-Vicat kufanele libe likhulu kunezinga lokushisa lokupheka, ukumelana nomthelela kufanele kube kuhle, ukumelana okuhle kwemidiya, iso lezinhlanzi kanye nephoyinti lekristalu kufanele kube kuncane ngangokunokwenzeka.
Ingakwazi ukumelana ne-121 ℃ 0.15Mpa inzalo yokupheka ingcindezi, icishe ilondoloze ukuma kokudla, ukunambitheka, futhi ifilimu ngeke iqhekeke, ikhasi, noma ukunamathela, inokuqina okuhle; ngokuvamile ngefilimu enayiloni noma ifilimu ye-polyester eyinhlanganisela, ukupakishwa okuqukethe uhlobo lwesobho lokudla, kanye nama-meatballs, amadombolo, irayisi, nokunye ukudla okufriziwe okugayiwe.
(4) I-Aluminium Foil
I-aluminium foil iyona kuphela ucwecwe lwensimbi ezintweni zokupakisha eziguquguqukayo, ucwecwe lwe-aluminium luyimpahla yensimbi, ukuvimbela kwayo amanzi, ukuvimbela igesi, ukuvimbela ukukhanya, ukugcinwa kwe-flavour yinoma iyiphi enye impahla yephakheji okunzima ukuyiqhathanisa. Ucwecwe lwe-aluminium ukuphela kwecwecwe lensimbi ezintweni zokupakisha eziguquguqukayo. Ingabe ukumelana 121 ℃ 0.15Mpa ingcindezi ukupheka inzalo ukupheka, ukuqinisekisa ukuma ukudla, ukunambitheka, futhi ifilimu ngeke crack, ikhasi, noma adhesion, has ukuzinza okuhle; ngokuvamile ngefilimu enayiloni noma ifilimu ye-polyester eyinhlanganisela, iphakheji equkethe ukudla kwesobho, nama-meatballs, amadombolo, irayisi nokunye ukudla okufriziwe okugayiwe.
(5) INKI
Izikhwama ze-steamer zisebenzisa uyinki osekelwe ku-polyurethane ukuphrinta, izidingo zezincibilikisi ezisele eziphansi, amandla ayinhlanganisela ephezulu, akukho ukushintsha kombala ngemva kokupheka, akukho delamination, imibimbi, njengezinga lokushisa lokupheka elingaphezu kuka-121 ℃, iphesenti elithile le-hardener kufanele lengezwe ukumelana lokushisa kukayinki.
Ukuhlanzeka kukayinki kubaluleke kakhulu, izinsimbi ezisindayo njenge-cadmium, umthofu, i-mercury, i-chromium, i-arsenic nezinye izinsimbi ezisindayo zingabeka ingozi enkulu endaweni yemvelo kanye nomzimba womuntu. Okwesibili, uyinki ngokwawo ukwakheka kwento, uyinki izixhumanisi ezahlukahlukene, i-pigment, odayi, izithasiselo ezahlukahlukene, ezifana ne-defoaming, antistatic, plasticizers nezinye izingozi zokuphepha. Akufanele kuvunyelwe ukwengeza izinhlobonhlobo zezingulube zensimbi ezisindayo, i-glycol ether ne-ester compounds. Izincibilikisi zingaqukatha i-benzene, i-formaldehyde, i-methanol, i-phenol, izixhumanisi zingaqukatha i-toluene diisocyanate yamahhala, izikhala zingaqukatha ama-PCB, ama-amine aphunga nokunye.
(6) Izinto zokunamathisela
Isikhwama se-Steam Retorting esiyinhlanganisela sisebenzisa i-polyurethane adhesive enezingxenye ezimbili, i-ejenti eyinhloko inezinhlobo ezintathu: i-polyester polyol, i-polyether polyol, i-polyurethane polyol. Kunezinhlobo ezimbili zama-ejenti okwelapha: i-aromatic polyisocyanate ne-aliphatic polyisocyanate. Okunamathelayo okungcono ukumelana nokushisa okuphezulu kunezici ezilandelayo:
● Okuqinile okuphezulu, i-viscosity ephansi, ukusabalala okuhle.
●Ukunamathela okuhle ekuqaleni, awekho ukuncipha kwamandla ekhasi ngemva kokushiswa, awekho umhubhe ekukhiqizeni, akukho ukushwabana ngemva kokushisisa.
●Ingcina iphephile ngokwenhlanzeko, ayinabuthi futhi ayinaphunga.
●Isivinini sokusabela esisheshayo nesikhathi sokuvuthwa esifushane (phakathi kwamahora angu-48 emikhiqizweni eyinhlanganisela yepulasitiki nepulasitiki namahora angu-72 emikhiqizweni eyinhlanganisela ye-aluminium-plastic).
● Ivolumu yokumboza ephansi, amandla okubopha okuphezulu, amandla okuvala ukushisa okuphezulu, ukumelana nezinga lokushisa okuhle.
●I-viscosity ye-dilution ephansi, ingaba umsebenzi wesimo esiqinile esiphezulu, nokusabalala okuhle.
● Uhlu olubanzi lwezinhlelo zokusebenza, ezifanele amafilimu ahlukahlukene.
● Ukumelana kahle nokushisa (ukushisa, isithwathwa, i-asidi, i-alkali, usawoti, uwoyela, okubabayo, njll.).
Ukuhlanzeka kwama-adhesives kuqala ngokukhiqizwa kwe-amine eyinhloko ye-amine PAA (i-amine e-aromatic amine), evela ekuphenduleni kwamakhemikhali phakathi kwe-isocyanate enamakha kanye namanzi ekunyatheliseni ama-inks anezingxenye ezimbili kanye nama-adhesive a-laminating.Ukwakheka kwe-PAA kutholakala kuma-isocyanates aphunga , kodwa hhayi kusukela kuma-aliphatic isocyanates, ama-acrylics, noma ama-adhesive asekelwe epoxy. izinto ezingaqediwe, ezinamangqamuzana aphansi nezincibilikisi eziyinsalela nakho kungaba yingozi yokuphepha. Ukuba khona kwama-molecule aphansi angaqediwe kanye nezincibilikisi eziyinsalela nakho kungaba yingozi yokuphepha.
3.Isakhiwo esiyinhloko sesikhwama sokupheka
Ngokwezakhiwo zezomnotho nezomzimba kanye namakhemikhali ezinto ezibonakalayo, lezi zakhiwo ezilandelayo zivame ukusetshenziselwa izikhwama zokupheka.
Izendlalelo EZIMBILI: PET/CPP,BOPA/CPP,GL-PET/CPP.
Izendlalelo EZINTATHU: PET/AL/CPP, BOPA/AL/CPP, PET/BOPA/CPP,
I-GL-PET/BOPA/CPP,PET/PVDC/CPP,PET/EVOH/CPP,BOPA/EVOH/CPP
IZEMANDLA EZINE:PET/PA/AL/CPP, PET/AL/PA/CPP
Isakhiwo esinezitezi eziningi.
Ifilimu ehlanganisiwe ye-PET/EVOH /CPP, i-PET/PVDC ifilimu ehlanganiswe ndawonye /CPP,PA/PVDC ifilimu ehlanganiswe ndawonye /CPP PET/EVOH ifilimu ehlanganiswe ndawonye, ifilimu ehlanganisiwe ye-PA/PVDC
4. Ukuhlaziywa kwezici zesakhiwo sesikhwama sokupheka
Isakhiwo esiyisisekelo sesikhwama sokupheka siqukethe ungqimba olungaphezulu/ungqimba oluphakathi nendawo/ungqimba lokuvala ukushisa. Isendlalelo esingaphezulu ngokuvamile senziwe nge-PET ne-BOPA, edlala indima yokusekelwa kwamandla, ukumelana nokushisa nokuphrinta okuhle. Isendlalelo esiphakathi senziwe nge-Al, PVDC, EVOH, BOPA, edlala ngokuyinhloko indima yokuvimbela, ukuvikela ukukhanya, inhlanganisela ezinhlangothi ezimbili, njll. Ungqimba lokuvala ukushisa lwenziwe ngezinhlobo ezahlukene ze-CPP, EVOH, BOPA, nokunye ku. Ukukhethwa kwengqimba yokushisa ukushisa kwezinhlobo ezihlukahlukene ze-CPP, i-PP ekhishwe ngokubambisana ne-PVDC, ifilimu ye-EVOH e-extruded, i-110 ℃ ngaphansi kokupheka kufanele futhi ikhethe ifilimu ye-LLDPE, ikakhulukazi ukuze ibambe iqhaza ekuvaleni ukushisa, ukumelana nokubhoboza, ukumelana namakhemikhali, kodwa futhi i-adsorption ephansi yezinto ezibonakalayo, inhlanzeko yinhle.
4.1 PET/glue/PE
Lesi sakhiwo singashintshwa sibe yi-PA / glue / PE, i-PE ingashintshwa ibe yi-HDPE, i-LLDPE, i-MPE, ngaphezu kwenani elincane lefilimu ekhethekile ye-HDPE, ngenxa yokumelana nezinga lokushisa yi-PE, ngokuvamile esetshenziselwa i-100 ~ 110 ℃ noma izikhwama ezinenzalo; i-glue ingakhethwa ku-glue evamile ye-polyurethane kanye ne-glue abilayo, ayifanele ukupakishwa kwenyama, umgoqo umpofu, isikhwama sizobe sishwabene ngemva kokushisa, futhi ngezinye izikhathi ungqimba lwangaphakathi lwefilimu lunamathele komunye nomunye. Eqinisweni, lesi sakhiwo siyisikhwama esibilisiwe noma isikhwama se-pasteurized.
4.2 PET/glue/CPP
Lesi sakhiwo kuyinto evamile esobala ukupheka isikhwama isakhiwo, kungenziwa zahlanganiswa iningi imikhiqizo ukupheka, okuyinto libhekene ukubonakala komkhiqizo, ungakwazi ngqo ukubona okuqukethwe, kodwa ayikwazi ukupakishwa isidingo ukugwema ukukhanya umkhiqizo. Umkhiqizo unzima ukuwuthinta, ngokuvamile udinga ukubhoboza amakhona ayindilinga. Lesi sakhiwo somkhiqizo ngokuvamile siyi-121 ℃ inzalo, iglue yokupheka evamile yokushisa ephezulu, i-CPP yokupheka ebangeni elivamile ingaba. Kodwa-ke, i-glue kufanele ikhethe izinga elincane lokuncipha kwebanga, ngaphandle kwalokho ukufinyela kwesendlalelo seglue ukushayela uyinki ukuhambisa, kungenzeka ukuthi i-delamination ngemva kokuqhuma.
4.3 BOPA/ingcina/CPP
Lesi izikhwama zokupheka ezisobala ezijwayelekile ze-121 ℃ zokupheka inzalo, ukubonakala okuhle, ukuthinta okuthambile, ukumelana nokubhoboza okuhle. Umkhiqizo futhi awukwazi ukusetshenziselwa isidingo sokugwema ukupakishwa komkhiqizo okhanyayo.
Ngenxa ye-BOPA umswakama permeability mkhulu, kukhona imikhiqizo ephrintiwe ku-steam lula ukukhiqiza umbala permeability mkhuba, ikakhulukazi uchungechunge olubomvu uyinki Ukungena ebusweni, ukukhiqizwa uyinki ngokuvamile kudingeka wengeze ejenti elaphayo ukuvimbela. Ngaphezu kwalokho, ngenxa uyinki in the BOPA lapho adhesion iphansi, kodwa futhi kulula ukukhiqiza anti-stick mkhuba, ikakhulukazi high umswakama imvelo. Imikhiqizo eseqediwe kancane kanye nezikhwama eziqediwe ekucutshungulweni kufanele zivalwe futhi zipakishwe.
4.4 KPET/CPP, KBOPA/CPP
Lesi sakhiwo asivamile ukusetshenziswa, obala umkhiqizo muhle, ne high barrier izakhiwo, kodwa ingasetshenziswa kuphela inzalo ngaphansi 115 ℃, ukumelana lokushisa kuba kubi kancane, futhi kukhona ukungabaza mayelana nempilo nokuphepha kwayo.
4.5 PET/BOPA/CPP
Lesi sakhiwo somkhiqizo singamandla aphezulu, ukukhanya okuhle, ukumelana nokubhoboza okuhle, ngenxa ye-PET, umehluko wezinga le-BOPA shrinkage mkhulu, ngokuvamile usetshenziselwa i-121 ℃ nangaphansi kokupakishwa komkhiqizo.
Okuqukethwe kwephakheji kune-acidic eyengeziwe noma i-alkaline lapho kukhethwa lesi sakhiwo semikhiqizo, kunokusebenzisa isakhiwo esine-aluminium.
Isendlalelo sangaphandle seglue singasetshenziselwa ukukhetha iglue ebilisiwe, izindleko zingancishiswa ngokufanele.
4.6 PET/Al/CPP
Lesi yisakhiwo sesikhwama sokupheka esingavamile kakhulu esingabonisi obala, ngokusho koyinki abahlukene, iglue, i-CPP, izinga lokushisa lokupheka kusuka ku-121 ~ 135 ℃ lingasetshenziswa kulesi sakhiwo.
Isakhiwo se-PET/ingxenye ye-inki eyodwa/i-high-temperature adhesive/Al7µm/high-temperature adhesive/CPP60µm isakhiwo singafinyelela izidingo zokupheka ezingu-121℃.
I-PET/Izingxenye ezimbili zikayinki/I-High-temperature adhesive/Al9µm/I-adhesive High-temperature/High-temperature CPP70µm isakhiwo singaba ngaphezu kwezinga lokushisa lokupheka elingu-121℃, futhi impahla yokuvimbela iyanyuswa, futhi ukuphila kweshalofu kuyanwetshwa, okungase kunwetshwe. ube ngaphezu konyaka owodwa.
4.7 BOPA/Al/CPP
Lesi sakhiwo sifana nesakhiwo esingenhla esingu-4.6, kodwa ngenxa yokumuncwa kwamanzi amakhulu kanye nokuncipha kwe-BOPA, asifanele ukupheka okunokushisa okuphezulu okungaphezu kuka-121 ℃, kodwa ukumelana nokubhoboza kungcono, futhi kungahlangabezana nezidingo ze-121 ℃ ukupheka.
4.8 PET/PVDC/CPP、BOPA/PVDC/CPP
Lesi sakhiwo somgoqo womkhiqizo sihle kakhulu, silungele i-121 ℃ kanye nokushisa okulandelayo kokupheka inzalo, futhi umoya-mpilo unezidingo zokuvimbela okuphezulu komkhiqizo.
I-PVDC esakhiweni esingenhla ingathathelwa indawo yi-EVOH, nayo enendawo ephezulu yokuvimbela, kodwa impahla yayo yokuvimbela iyancipha ngokusobala uma inzalo ekushiseni okuphezulu, futhi i-BOPA ayikwazi ukusetshenziswa njengongqimba olungaphezulu, ngaphandle kwalokho impahla yokuvimbela iyancipha kakhulu. ngokwanda kwezinga lokushisa.
4.9 PET/Al/BOPA/CPP
Lokhu ukwakhiwa kwezikhwama zokupheka ezisebenza kahle kakhulu ezingapakisha cishe noma yimuphi umkhiqizo wokupheka futhi kungamelana nezinga lokushisa lokupheka ku-121 kuya ku-135 degrees Celsius.
Isakhiwo I: PET12µm/i-adhesive high-temperature/Al7µm/ingcina izinga lokushisa eliphezulu/BOPA15µm/ingcina izinga lokushisa eliphezulu/CPP60µm, lesi sakhiwo sinomgoqo omuhle, ukumelana nokubhoboza okuhle, amandla amahle okumunca ukukhanya, futhi siwuhlobo oluhle kakhulu lwe-121 ℃ isikhwama sokupheka.
Isakhiwo II: I-PET12µm/ingcina izinga lokushisa eliphezulu/Al9µm/i-adhesive yokushisa okuphezulu/BOPA15µm/ingcina izinga lokushisa eliphezulu/izinga eliphezulu lokushisa CPP70µm, lesi sakhiwo, ngaphezu kwazo zonke izici zokusebenza zesakhiwo I, sinezici zokungu-121 ℃ kanye ngaphezu kokupheka okunokushisa okuphezulu. Isakhiwo III: I-PET/ingcina A/Al/glue B/BOPA/glue C/CPP, inani leglue yeglue A ngu-4g/㎡, inani leglue yeglue B ngu-3g/㎡, kanye nenani leglue iglue C ingu-5-6g/㎡, enganelisa izidingo, futhi yehlise inani leglue yeglue A kanye neglu B, engonga izindleko ngendlela efanele.
Ngakolunye uhlangothi, i-glue A kanye ne-glue B yenziwe ngeglue yebanga elibilisa kangcono, futhi iglue C yenziwe ngeglue ekwazi ukumelana nokushisa okuphezulu, engahlangabezana nemfuneko yokubilisa okungu-121℃, futhi ngesikhathi esifanayo yehlise izindleko.
Isakhiwo IV: I-PET/iglue/BOPA/glue/Al/glue/CPP, lesi sakhiwo siyisimo esishintshiwe se-BOPA, ukusebenza okuphelele komkhiqizo akushintshile kakhulu, kodwa ukuqina kwe-BOPA, ukumelana nokubhoboza, amandla ayinhlanganisela ephezulu nezinye izici ezinenzuzo. , ayizange inikeze umdlalo ogcwele kulesi sakhiwo, ngakho-ke, ukusetshenziswa kokumbalwa uma kuqhathaniswa.
4.10 PET/ Co-extruded CPP
I-CPP e-co-extruded kulesi sakhiwo ngokuvamile ibhekisela ku-5-ungqimba no-7-ungqimba we-CPP enezakhiwo zokuvimbela okuphezulu, njengalezi:
I-PP/i-bonding layer/EVOH/i-bonding layer/PP;
I-PP/i-bonding layer/PA/i-bonding layer/PP;
PP/isendlalelo esiboshiwe/PA/EVOH/PA/sendlalelo esiboshiwe/PP, njll;
Ngakho-ke, ukusetshenziswa kwe-CPP e-co-extruded kukhulisa ukuqina komkhiqizo, kunciphisa ukuphuka kwamaphakheji ngesikhathi sokuhlanza, ukucindezela okukhulu, nokuguquguquka kwengcindezi, futhi kwandise isikhathi sokugcina ngenxa yezakhiwo ezithuthukisiwe zokuvimbela.
Ngamafuphi, ukwakheka kwezinhlobonhlobo zesikhwama sokushisa okuphezulu, lokhu okungenhla kungukuhlaziywa kokuqala kwesakhiwo esithile esivamile, ngokuthuthukiswa kwezinto ezintsha, ubuchwepheshe obusha, kuzoba nezakhiwo ezintsha, ukuze iphakheji yokupheka ibe ne ukukhetha okukhulu.
Isikhathi sokuthumela: Jul-13-2024