Mabhodhoro ezvinwiwa akagadziridzwa PET mabhodhoro akasanganiswa ne polyethylene naphthalate (PEN) kana akaumbwa mabhodhoro ePET uye thermoplastic polyarylate.Iwo anorondedzerwa semabhodhoro anopisa uye anogona kumira kupisa pamusoro pe85 ° C;mabhodhoro emvura anotonhora Mabhodhoro, hapana zvinodiwa pakupisa kupisa.Bhodhoro rinopisa rakafanana nebhodhoro rinotonhora mukuumba maitiro.
1. Midziyo
Parizvino, vagadziri vePET vanonyatsoshanda kuvhuvhuta michina inopinza kunyanya kubva kuSIDEL yeFrance, KRONES yekuGermany, uye Fujian Quanguan yekuChina.Kunyangwe vagadziri vakasiyana, misimboti yavo yemidziyo yakafanana, uye inowanzo sanganisira zvikamu zvishanu zvikuru: billet supply system, inodziya system, bhodhoro rinovhuvhuta system, control system uye ebetsero muchina.
2. Blow molding process
PET bhodhoro rinoputika maitiro ekuumba.
Zvinhu zvakakosha zvinokanganisa iyo PET bhodhoro kuvhuvhuta maitiro ndeye preform, kudziyisa, pre-kuvhuvhuta, mold uye kugadzirwa nharaunda.
2.1 Preform
Paunenge uchigadzira mabhodhoro akaumbwa, iwo PET machipi anotanga kuumbwa jekiseni kuita preforms.Zvinoda kuti chikamu chezvinyorwa zvechipiri zvakadzorerwa hazvigone kunge zvakanyanyisa (zvisingasviki 5%), nhamba yenguva dzekudzorera haigoni kudarika kaviri, uye molecular uremu uye viscosity haigoni kuderera (molecular weight 31000- 50000, intrinsic viscosity 0.78 -0.85cm3 / g).Zvinoenderana neNational Food Safety Law, zvechipiri zvekudzoreredza zvinhu hazvizoshandiswe pakudya uye kurongedza kwemishonga.Jekiseni yakaumbwa preforms inogona kushandiswa kusvika 24h.Preforms dzisina kushandiswa mushure mekudziya dzinofanirwa kuchengetwa kweanopfuura maawa makumi mana nemasere kuti dzidziswe zvakare.Nguva yekuchengetedza ye preforms haigoni kudarika mwedzi mitanhatu.
Hunhu hweiyo preform hunoenderana zvakanyanya pamhando yePET zvinhu.Zvishandiso zviri nyore kuzvimba uye zviri nyore kuumba zvinofanirwa kusarudzwa, uye inonzwisisika preform yekuumba nzira inofanirwa kugadziriswa.Ongororo dzakaratidza kuti mapreforms anotengeswa kunze kwenyika akagadzirwa nePET zvinhu zvine viscosity yakafanana zviri nyore kupfutidza mold pane zvemumba;nepo batch imwechete yepreforms ine mazuva akasiyana ekugadzira, iyo blowing molding process inogonawo kunge yakasiyana zvakanyanya.Hunhu hwe preform hunotaridza kuoma kweiyo blow molding process.Zvinodiwa zve preform kuchena, kujeka, hapana tsvina, hapana ruvara, uye kureba kweiyo jekiseni point uye yakatenderedza halo.
2.2 Kupisa
Kupisa kwepreform kunopedzwa nevheni yekupisa, iyo tembiricha iyo inogadziriswa nemaoko uye inogadziriswa nesimba.Muchoto, iyo kure-infrared rambi chubhu inozivisa kuti kure-infrared inopenya inopisa preform, uye fan iri pazasi pechoto inotenderedza kupisa kuita kuti tembiricha mukati mevheni ive.Iyo preforms inotenderera pamwe chete mukufambisa kwemberi muchoto, kuitira kuti madziro e preform adziye zvakafanana.
Kuiswa kwemwenje muchoto kazhinji muchimiro che "zone" kubva kumusoro kusvika pasi, ine migumo yakawanda uye shoma pakati.Kupisa kwechoto kunodzorwa nenhamba yekuvhurwa kwemwenje, kugadzika kwekushisa kwese, simba revheni uye reshiyo yekudziya yechikamu chimwe nechimwe.Kuvhurwa kwechubhu remwenje kunofanirwa kugadziridzwa pamwe chete nebhodhoro rakafanovhuvhuta.
Kuita kuti ovheni ishande zviri nani, kugadziriswa kwehurefu hwayo, ndiro inotonhorera, nezvimwe zvakakosha zvikuru.Kana kugadzirisa kusina kunaka, zviri nyore kuzvimba muromo webhodhoro (muromo webhodhoro unova mukuru) uye musoro wakaoma uye mutsipa (mitsipa haigoni kudhonzwa yakazaruka) panguva yekuputika uye zvimwe zvikanganiso.
2.3 Kufanovhuvhuta
Kufembera-kuvhuvhuta inhanho yakakosha kwazvo munhanho mbiri yekuridza bhodhoro nzira.Zvinoreva kune kusati kwavhuvhuta kunotanga apo dhizaini inodzika panguva yekuvhuvhuta maitiro, kuitira kuti preform itore chimiro.Mukuita uku, kutungamira kusati kwavhuvhuta, pre-kuvhuvhuta kudzvanywa uye kuvhuvhuta kuyerera zvinhu zvitatu zvakakosha maitiro.
Chimiro che pre-kuvhuvhuta bhodhoro chimiro chinotarisa kuoma kweiyo blow molding process uye kunaka kwebhodhoro basa.Iyo yakajairika pre-kuvhuvhuta bhodhoro chimiro chakaita spindle, uye izvo zvisina kujairika zvinosanganisira sub-bhero chimiro uye chimiro chekubata.Chikonzero chechimiro chisina kujairika ndechekupisa kwakashata kwenzvimbo, kusakwana kusati kwavhuvhuta kudzvanywa kana kuyerera kwemhepo, etc. Hukuru hwebhodhoro rekutanga kuvhuvhuta kunoenderana nekudzvanywa kusati kwaitika uye kutaridzika kusati kwavhuvhuta.Mukugadzira, saizi uye chimiro chemabhodhoro ekutanga-kuvhuvhuta mumidziyo yese inofanira kuchengetwa yakafanana.Kana pane mutsauko, zvikonzero zvakadzama zvinofanira kuwanikwa.Iyo yekudziya kana pre-kuvhuvhuta process inogona kugadziriswa zvinoenderana ne pre-kuvhuvhuta bhodhoro mamiriro.
Saizi yepre-blowing pressure inosiyana nehukuru hwebhodhoro uye midziyo yekushandisa.Kazhinji, huwandu hwakakura uye pre-kuvhuvhuta pressure idiki.Iyo midziyo ine yakakwirira yekugadzira uye yakakwirira pre-kuvhuvhuta pressure.
2.4 Muchina wekubatsira uye mold
Muchina wekubatsira unonyanya kureva midziyo inoita kuti mold irambe ichipisa.Kupisa nguva dzose kwemuumbi kunoita basa rinokosha pakuchengetedza kugadzikana kwechigadzirwa.Kazhinji, tembiricha yebhodhoro yemuviri yakakwira, uye tembiricha yepasi pebhodhoro yakaderera.Kwemabhodhoro anotonhora, nekuti kutonhora kunobva pazasi kunotarisisa dhigirii remamorekuru, zviri nani kudzora tembiricha pa5-8 ° C;uye tembiricha iri pasi pebhodhoro rinopisa yakakwira zvakanyanya.
2.5 Mamiriro ezvinhu
Hunhu hwenzvimbo yekugadzira hunewo simba guru pakugadzirisa maitiro.Mamiriro ekushisa akadzikama anogona kuchengetedza kugadzikana kwemaitiro uye kugadzikana kwechigadzirwa.PET bhodhoro kuvhuvhuta kuumbwa kazhinji kuri nani pane tembiricha yekamuri uye yakaderera humidity.
3. Zvimwe zvinodiwa
Bhodhoro rekumanikidza rinofanirwa kugutsa zvinodiwa zvekushushikana bvunzo uye kudzvanywa bvunzo pamwe chete.Muedzo wekushushikana ndewekudzivirira kuputika uye kubuda kweketani yemamorekuru panguva yekubatana pakati pepasi pebhodhoro uye lubricant (alkaline) panguva yekuzadzwa kwePET bhodhoro.Chiyero chekumanikidza ndechekudzivirira kuzadza kwebhodhoro.Kudzora kwehunhu mushure mekuputika mune imwe yekumanikidza gasi.Kugutsa izvi zviviri zvinodiwa, iyo yepakati point ukobvu hunofanirwa kudzorwa mukati meimwe siyana.Mamiriro ezvinhu akazara ndeokuti nzvimbo yepakati itete, bvunzo yekushushikana yakanaka, uye kuramba kumanikidza kwakashata;nzvimbo yepakati yakakora, bvunzo yekumanikidza yakanaka, uye bvunzo yekushushikana haina kunaka.Ehezve, mhedzisiro yebvunzo yekushushikana zvakare yakabatana zvakanyanya nekuunganidzwa kwezvinhu munzvimbo yekuchinja yakatenderedza nzvimbo yepakati, iyo inofanirwa kugadziridzwa zvinoenderana nechiitiko chinoshanda.
4. Mhedziso
Iko kugadziridzwa kwePET bhodhoro kuvhuvhuta kuumba maitiro kunobva pane inoenderana data.Kana iyo data iri murombo, zvinodikanwa zvemaitiro zvakaomesesa, uye zvakatooma kuridza mold mabhodhoro akakodzera.
Nguva yekutumira: May-09-2020