Umgaqo-siseko wemveliso yesixhobo sokubumba esingenanto kunye nendlela yokubumba into ebizwa ngokuba ngumatshini wokubumba umbhobho obizwa ngokuba ngumatshini wokubumba ongenanto.Iplastiki iyanyibilika kwaye ikhutshwe ngokobungakanani kwi-screw extruder, kwaye emva koko yenziwe ngefilimu yomlomo, kwaye ipholile ngendandatho yomoya, kwaye ivuthelwe kwi-mold.Indlela yokulungisa iiplastiki ezikhula ngokukhawuleza.I-tubular parison yeplastiki efunyenwe nge-extrusion okanye isitofu sokubumba i-thermoplastic resin ifakwe kwi-mold edibeneyo ngelixa ishushu (okanye ishushu kwimo ethambileyo), kwaye umoya ocinezelweyo ungeniswa kwi-parison ngokukhawuleza emva kokuvala ukubumba ukuvuthela i-parison yeplastiki. .Iyakwandisa kwaye inamathele ngokusondeleyo kudonga lwangaphakathi lwesikhunta, kwaye emva kokupholisa kunye nokudiliza, iimveliso ezahlukeneyo ezingenanto zifunyenwe.
Umatshini wokubumba ukubetha / inkqubo yaqala ukusetyenziswa ukuvelisa iibhotile ze-polyethylene eziphantsi ngexesha leMfazwe Yehlabathi yesiBini.Ngasekupheleni kweminyaka yee-1950, kunye nokuzalwa kwe-polyethylene ephezulu kunye nokuphuhliswa koomatshini bokubumba, iteknoloji yomatshini wokubumba yayisetyenziswa ngokubanzi.Umthamo wezikhongozeli ezingenanto unokufikelela kumawaka eelitha, yaye enye imveliso ilawulwa ziikhompyutha.Iiplastiki ezifanelekileyo ukubumba ukubetha zibandakanya i-polyethylene, i-polyvinyl chloride, i-polypropylene, i-polyester, njl.
Intshayelelo yendlela yokubumba yokubumba umngxuma wokuvuthela:
Ngenxa yomahluko kwizinto ezikrwada, iimfuno zokusetyenzwa, imveliso kunye neendleko, iindlela ezahlukeneyo zokubumba zineenzuzo ezahlukeneyo ekusetyenzweni kweemveliso ezahlukeneyo.
Ukubunjwa kweemveliso ezingenanto kubandakanya iindlela ezintathu eziphambili:
1. Ukubumba ukuvuthela kwe-Extrusion: ikakhulu kusetyenziselwa ukusetyenzwa kwecawa okungaxhaswanga;
2. I-injection blow blowing: isetyenziselwa ikakhulu ukusetyenzwa kweparini exhaswa ngumbindi wentsimbi;
3. Ukubumba i-Stretch blow: kubandakanywa ukubunjwa kwe-extrusion-stretch-blow, i-injection-stretch-blow yokubumba iindlela ezimbini, inokuqhuba iimveliso ezijoliswe kwi-biaxially, ukunciphisa kakhulu iindleko zemveliso kunye nokuphucula ukusebenza kwemveliso.
Ukongeza, kukho ukubumba ukuvuthela okune-multi-layer, ukunyanzeliswa vuthela, ukubumba idiphu yokuvuthela, ukubumba ukuvuthela ugwebu, ukubunjwa kwe-dimensional three-dimensional blowing, njl. , kunye ne-1% yezinye zokubumba ukubetha;kuzo zonke iimveliso zokubumba, i-75% yeyemveliso ye-biaxially oriented.Iingenelo zokubumba i-extrusion blowukusebenza kukusebenza okuphezulu kwemveliso, ixabiso eliphantsi lezixhobo, ukhetho olubanzi lokubumba kunye noomatshini, kunye nokungalunganga lizinga eliphezulu le-scrap, ukuphinda kusetyenziswe kakubi kunye nokusetyenziswa kwe-scrap, ukulawulwa kobukhulu bemveliso, kunye nokusasazeka kwezinto.Emva koko, kuyimfuneko ukuqhuba umsebenzi wokunciphisa.Inzuzo yokubumba isitofu sokuvuthela kukuba akukho nkunkuma kwinkqubo yokucubungula, kunye nobukhulu bodonga lwemveliso kunye nokusabalalisa kwezinto eziphathekayo kunokulawulwa kakuhle.Ukungalungi kukuba izixhobo zokubumba zibiza kwaye ukuya kwinqanaba elithile zifanelekile kuphela kwiimveliso ezincinci ezibunjiweyo.
Iimeko zenkqubo yokubumba umngxuma wokuvuthela kufuneka ukuba umoya ocinezelweyo ovuthela i-parison ekubunjeni kufuneka ucoceke.Uxinzelelo lomoya lwe-injection blow blown yi-0.55 kwi-1 MPa;Uxinzelelo lokubumba ukuvuthela i-extrusion yi-0.2l ukuya kwi-0.62 MPa, kunye noxinzelelo lokubumba ukuvuthwa kokulula luhlala lufuneka ukuba lube phezulu njenge-4 MPa.Ekuqinisweni kweeplastiki, uxinzelelo oluphantsi lwenza ukuba uxinzelelo lwangaphakathi lwemveliso lube phantsi, ukusasazeka kwengcinezelo kufana kakhulu, kwaye uxinzelelo oluphantsi lunokuphucula ukunyanzeliswa, impembelelo, ukugoba kunye nezinye iimpawu zemveliso.
Ixesha lokuposa: Nov-21-2023