Kushandiswa uye Kugadzirwa kwePolypropylene yeThermoforming Mumunda weKurongedza

1. Nheyo huru uye hunhu hwe thermoforming

Kugadzira thermoforming inzira yakakosha yekugadzirisa mapurasitiki ekugadzira mapepa ethermoplastic kuita zvigadzirwa zvakasiyana-siyana. Thermoplastic sheet inodziiswa kuti ipfave uye yozomanikidzwa (vacuum kana positive pressure) kuti thermoplastic sheet ishande pamusoro pemold kuti iwane chimiro chakafanana nechepamusoro pemold, uye mushure mekutonhodza nekuumba, chigadzirwa chinochekwa kuti chiwane chimiro chaunoda. Thermoforming inokurumidza uye yakafanana, ine nguva pfupi yekuumba uye mutengo wakaderera wemold, yakakodzera otomatiki uye nguva refu yekugadzira, uye inoonekwa senzira inoshanda kwazvo yekugadzirisa ine mutengo wakaderera pakati penzira dzekuumba dzepurasitiki. Kunyanya nekuvandudzwa kuri kuramba kuchiitwa kwe thermoforming process nemidziyo uye kupindira kwecomputer simulation, thermoforming yave nzira huru yekugadzirisa inokwikwidzana ne injection ne blow molding. Mumakore achangopfuura, kufambira mberi kutsva kwakaitwa mu thermoforming processing equipment. Jimin akaunza michina ye thermoforming nemaitiro akaratidzwa paK2013 muGermany, uko kumhanya, kushanduka-shanduka, tekinoroji yekudzora uye kuderedza mitengo zvave dingindira guru remidziyo mitsva ye thermoforming mupakeji neindasitiri.

Mhando huru dze thermoforming ndeidzi: vacuum forming, pressure forming, plunger-assisted forming uye musanganiswa wadzo. Kune zvigadzirwa zvakawanda zve thermoformed pamusika, zvakaita semakapu, maplate, matireyi echikafu, matoyi, macaps nengowani, zvikamu zvemidziyo yepamba pamwe nezvikamu zvemotokari, zvikamu zvekushongedza zvekuvaka, makemikari, nezvimwewo. Kana tichienzanisa ne injection molding, thermoforming ine zvakanakira zvekushanda zvakanaka, mari shoma mumidziyo uye kugona kugadzira zvigadzirwa zvine nzvimbo huru. Mapurasitiki makuru anoshandiswa mu thermoforming ipolystyrene (PS), polyvinyl chloride (PVC), polyolefins dzakadai sePE, PP, polyacrylates (PMMA) uye cellulose dzakadai senitrocellulose (NC), cellulose acetate (CA), nezvimwewo. Mapurasitiki ekugadzira akadai seacrylonitrile-butadiene-styrene (ABS)Zvinoshandiswawo. Styrene plastic (ABS), polycarbonate (PC), nezvimwewo. Kugadzirwa kwePP inoshanda zvakanyanya sekujekesa zvakanyanya, kusimba kwakanyanya kunyunguduka uye warpage yakaderera kwakakurudzira kushandiswa nekuvandudzwa kwePP mumunda we thermoforming.

2. Mamiriro eMusika weKurongedza Thermoforming yeMusha

Kune makambani anodarika 3,000 ekugadzira zvinhu zvinogadzirwa nethermoforming emuno, ayo anopfuura 300 ane simba rekugadzira rinosvika matani chiuru pagore. Mafekitori angangoita 70% ane simba rekugadzira rinosvika zviuru zvematani pagore anozvigadzira ega uye anobatanidza zvigadzirwa zvinogadzirwa nethermoforming. PS (OPS) nepolyethylene terephthalate (PET) ndiwo mapepa makuru anotengeswa kunze, nepo mamwe mafekitori anokwanisa kugadzira mapepa avo ePP, PS nePVC uye mafekitori madiki anopa mapepa avo kunze. Zvigadzirwa zvinogadzirwa nethermoforming zvinonyanya kushandiswa mukuisa chikafu, kuisa chikafu uye kuisa mapepa akachekwa, uye zvinodiwa zvezvishandiso zvinosiyana kubva pakushandisa kusvika pakushandisa.

3. Kugadzirwa kwePP ye thermoforming

Kushandiswa kwePP thermoforming mudzimba kwakatanga kuma1990 uye kwave kuchikura nekukurumidza mumakore achangopfuura, nekukura kwegore negore kweinenge 10%. Iye zvino kune vagadziri vakawanda vakuru uye vakakurumbira vepurasitiki yethermoforming muChina, vakaita seJapan Central Chemical, vakavaka mafekitori muChina ndokuaisa mukugadzirwa, uye zvigadzirwa zvavo zvinonyanya kutarisa zvigadzirwa zvepurasitiki zvepakati nepamusoro zvethermoforming. Parizvino, pane kushomeka kwezvinhu zvakakosha zvePP zvakanangana nemaitiro ethermoforming muChina. Vagadziri vezvigadzirwa zvethermoforming mudzimba vanowanzotenga T30S nedzimwe resin dzakajairika dzakagadziriswa kuti dzishandiswe, asi zvigadzirwa zvinowanikwa kuburikidza nekugadzirwa kwezvigadzirwa mushure mekugadzirisa uye kugadzirwa kweindasitiri, kune kutonga kwekuwedzera kusina kufanana, hunhu hwekumanikidza hahusviki zvinodiwa, ukobvu hwemadziro emidziyo isina kufanana muthermoforming, extrusion coating calendering edge curling nezvimwe zvinetso, zvakaoma kusangana nemhando yepamusoro uye zvinodiwa zvepamusoro zvezvinodiwa zvekushandisa, asiwo Zvakaoma kusangana nezvinodiwa zvemhando yepamusoro uye zvinodiwa zvepamusoro, uye zvakare zvinoderedza kushanda zvakanaka kwemakambani ekugadzirisa ari pasi.

Zvinhu zvakakosha zve thermoforming zvekunze kwenyika zvinonyanya kuve ma homopolymers, ma transparent random copolymers mashoma, uye mamwe ma grade ane nguva refu yekupinza, saka vagadziri ve thermoforming vemuno havawanzo shandisa zvinhu zvinobva kunze kwenyika. Kugadzirwa kwepepa rekugadzira zvigadzirwa zve thermoforming kuripo kunonyanya kuve 600 mm yakafara sheet, nekufambira mberi kwetekinoroji yemuchina wekuumba, upamhi hwepepa huri kuwedzera, rakafara kupfuura 1000 mm, saka kugona kwepepa rekudzivirira kunyunguduka kunoisa zvinodiwa zvakanyanya. Mhinduro muindasitiri yezvigadzirwa zvekunze ndeyekuwedzera chikamu chakati che high-density polyethylene (PE-HD) kuPP yakajairika kuti pepa rirambe richiramba richinyunguduka, asi nzira iyi ichaunza kusanganiswa kusina kuenzana uye kujeka kushoma kwezvigadzirwa. Indasitiri ye thermoforming yemuno ine kudiwa kukuru kwezvinhu zvePP zvine mashandiro akakwira uye kujeka kwakanyanya.
Gore ra2012 risati rasvika, tsvakiridzo nekugadzirwa kwezvinhu zvinopa thermoforming zvakajeka muChina zvaive zvichiri kusaririra. Panguva iyoyo, mamiriro eR&D ezvinhu zvakakosha zvinopa thermoforming zvemumba akanyorwa muTafura 2.

Hapana chimwe chezvinhu izvi chakashanda pazviri kuti pave nesimba rakanyanya kunyunguduka uye kupararira kwakakura kwehuremu hwemamorekuru hunodiwa pakugadzirisa thermoforming, uye zvimwe hazvina kugadzirwa zvakanyanya.

Mumakore achangopfuura, Tianjin Petrochemical yakaramba ichigadzira zvinhu zvakakosha mumunda wePP thermoforming, uye yakawana mabhenefiti makuru ehupfumi nemagariro, zvichiwedzera ruvara munzvimbo iyi ye thermoforming.

Tafura 4 inoratidza zvinhu zvePP zvakakosha zve thermoforming zvakagadzirwa nemiti yakati wandei ye petrochemical mumakore achangopfuura, izvo zvakagadzirwa neShanghai Ru Xia New Material uye imwe neimwe petrochemical plant zvichienderana nezvinodiwa zvakasiyana muzvikamu zvakasiyana zve thermoforming. Vagadziri vezvigadzirwa zve thermoforming vari pasi pemvura vakapararira, huwandu hweindasitiri hwakaderera, kune mabhizinesi mashoma ari pamusoro pehuwandu, uye kudiwa kwezvigadzirwa zviri pasi pemvura kwakasiyana-siyana, uye zvirimwa zve petrochemical zvine hurongwa hwazvo hwekuronga kugadzirwa, saka kuchine mamwe matambudziko ekubatana zvakanaka nezviri kumusoro nezviri pasi pemvura, asi gwara rekuvandudza indasitiri ye thermoforming nderekugadzira zvigadzirwa zvakasiyana-siyana zviri pasi pemvura kune rumwe rutivi, uye kushandisa zvinhu zvakakosha zvekugadzira kune rumwe rutivi, kuitira kuvandudza mhando yechigadzirwa uye kuvandudza kugadzikana kwemhando yechigadzirwa. Kugadzirwa nekushandiswa kwezvinhu zvakakosha zve thermoforming kuchiri kuvimbisa.