ifilimu ye-pallet elula yokupakisha

Ifilimu yokwelula, eyaziwa nangokuthi ifilimu enwetshiwe kanye nefilimu yokunciphisa ukushisa, ingeyokuqala e-China ukukhiqiza ifilimu elula ye-PVC ene-PVC njengento eyisisekelo kanye ne-DOA njenge-plasticizer kanye nomphumela wokuzinamathisela. Ngenxa yezinkinga zokuvikelwa kwemvelo, izindleko eziphezulu (ezihlobene nenani eliphezulu le-PE, indawo encane yokupakisha iyunithi), ukungakwazi ukunwebeka, njll., kancane kancane zaqedwa lapho kuqaliswa ukukhiqizwa kwefilimu yasekhaya ye-PE stretch kusuka ngo-1994 kuya ku-1995. I-PE ifilimu yokwelula kuqala isebenzisa i-EVA njengezinto ezinamathelayo, kodwa izindleko zayo ziphezulu futhi zinokunambitha. Kamuva, i-PIB ne-VLDPE zisetshenziswa njengezinto zokuzinamathisela, futhi izinto eziyisisekelo ziyi-LLDPE. Ifilimu yokwelula ingahlukaniswa: Ifilimu yokwelula ye-PE, ifilimu yokwelula ye-PE, ifilimu yokwelula ye-LLDPE, ifilimu ye-PE slit stretch film, njll. Ikhiqizwa kusetshenziswa i-polyethylene ewumugqa we-LLDPE resin kanye nefomula ekhethekile ye-tackifier ye-additives ekhethekile. Ingakhiqiza ifilimu yokwelula esebenza ngezinto eziningi ukuze isetshenziswe ngesandla, ukusetshenziswa komshini wohlobo lokumelana, ukusetshenziswa komshini wohlobo lwe-pre-stretch, i-anti-ultraviolet, i-anti-static kanye ne-anti-rust. Inezinzuzo ezilandelayo: Ngokusebenzisa umshini wokukhipha i-double-layer co-extrusion, ifilimu elula ecindezelwe ingakwazi ukukhulisa izici ze-polymer ngayinye, futhi ukucaca kwayo, amandla aqinile, nokumelana nokubhoboza kungcono kakhulu uma ifinyelela endaweni yokuncibilika. isimo. 2. Inekhono elihle lokunwebeka, ukukhanya okuhle nokuqina okufanayo. 3. Inokwandiswa kwe-longitudinal, ikwazi ukuqina kahle, ukumelana kahle kwezinyembezi eziphambeneyo, kanye nethanga elihle kakhulu lokuzinamathelisa. 4. Kuyinto evumela imvelo futhi isetshenziswe kabusha, ayinambitheki, ayinabuthi, futhi ingapakisha ukudla ngokuqondile. 5. Ingakwazi ukukhiqiza imikhiqizo ye-viscous enohlangothi olulodwa, inciphise umsindo okhishwa ngesikhathi sokusongwa nokunwetshwa, futhi inciphise uthuli nesihlabathi ngesikhathi sokuthutha nokugcinwa. 1. Amaphakheji avaliwe Lolu hlobo lokupakisha lufana nokufakwa kwefilimu enciphayo. Ifilimu isonga ithreyi ethreyini, bese kuba izibambo ezimbili ezishisayo zivala ifilimu kuzo zombili iziphetho. Lena indlela yokuqala yokusetshenziswa kwefilimu enwetshiwe, futhi amafomu amaningi okupakisha athuthukisiwe kusuka kulokhu 2. Ukupakishwa okugcwele okugcwele Lolu hlobo lokupakisha ludinga ukuthi ifilimu ibe banzi ngokwanele ukumboza i-pallet, futhi ukuma kwephalethi kujwayelekile, ngakho-ke. inayo eyayo, ilungele ukushuba kwefilimu okungu-17～35μm 3. Ukupakishwa okwenziwa ngesandla Lolu hlobo lokupakisha wuhlobo olulula lokupakisha ifilimu enwetshiwe. Ifilimu ifakwe ku-rack noma ibanjwe ngesandla, futhi i-tray iyajikeleza noma ifilimu izungeza ithreyi. Isetshenziselwa ikakhulukazi ukupakishwa kabusha ngemuva kokulimala kwe-pallet eboshwe, kanye nokupakishwa kwe-pallet evamile. Lolu hlobo lwejubane lokupakisha luhamba kancane, futhi ubukhulu befilimu obufanele bungama-15-20μm; 4. Ukupakishwa komshini wokugoqa ifilimu yokwelula Lolu uhlobo oluvame kakhulu nolubanzi lokupakisha ngomshini. Ithreyi liyazungeza noma ifilimu izungeza ithreyi. Ifilimu igxilwe kubakaki futhi ingakwazi ukuhamba phezulu naphansi. Lolu hlobo lomthamo wokupakisha lukhulu kakhulu, cishe amathreyi ayi-15-18 ngehora. Ubukhulu befilimu obufanele bungaba ngu-15-25μm; 5. Ukupakishwa kwemishini okuvundlile Ihlukile kwezinye izinto ezipakishwayo, ifilimu izungeza impahla, ilungele ukupakishwa kwempahla emide, njengokhaphethi, amabhodi, ama-fiberboards, izinto ezimise okwezimo, njll.; 6. Ukupakishwa kwamashubhu wephepha Lokhu kungenye yezinto zakamuva ezisetshenziswayo zefilimu enwetshiwe, engcono kunepaki yakudala yamashubhu ephepha. Ubukhulu befilimu obufanele bungama-30～120μm; 7. Ukupakishwa kwezinto ezincane Lena yindlela yakamuva yokupakisha yefilimu elula, engakwazi ukunciphisa kuphela ukusetshenziswa kwezinto ezibonakalayo, kodwa futhi inciphise indawo yokugcina ama-pallets. Emazweni angaphandle, lolu hlobo lokupakisha lwaqala ukwethulwa ngo-1984. Ngemva konyaka owodwa, amaphakheji amaningi anjalo avela emakethe. Leli fomu lokupakisha linamandla amakhulu. Ifanele ukushuba kwefilimu okungu-15～30μm; 8. Ukupakishwa kwamashubhu nezintambo Lesi isibonelo sokusetshenziswa kwefilimu enwetshiwe emkhakheni okhethekile. Impahla yokupakisha ifakwe ekupheleni komugqa wokukhiqiza. Ifilimu yokwelula ezenzakalelayo ngokugcwele ayikwazi ukufaka esikhundleni se-tape kuphela ukuze ibophe izinto ezibonakalayo, kodwa futhi idlale indima yokuzivikela. Ubukhulu obusebenzayo buyi-15-30μm. 9. Indlela yokwelula yokupakishwa kwendlela ye-pallet Ukupakishwa kwefilimu enwetshiwe kufanele kwelulwe. Izinhlobo ezinwebekayo zokupakishwa kwemishini ye-pallet zihlanganisa ukwelula okuqondile kanye nokwelula kwangaphambili. I-Pre-stretching ihlukaniswe ngezinhlobo ezimbili, enye i-roll pre-stretching kanti enye i-electric stretching. Ukwelula okuqondile ukuqedela ukwelula phakathi kwethreyi nefilimu. Isilinganiso sokwelula sale ndlela siphansi (cishe 15% -20%). Uma isilinganiso sokunwebeka sidlula u-55%～60%, esidlula iphuzu lokuqala lefilimu, ububanzi befilimu buyancishiswa, nokusebenza kokubhoboza nakho kuyalahleka. Kulula ukuphuka. Futhi ngesilinganiso sokunwebeka esingu-60%, amandla okudonsa asemakhulu kakhulu, ezimpahleni ezilula, kungenzeka akhubaze izimpahla.