Ndeupi musiyano uripo pakati pejekiseni molding uye blow molding?

Ndeupi musiyano uripo pakati pejekiseni molding uye blow molding?

1. Nzira yekugadzira jekiseni nekuputira kuvhuvhuta kwakasiyana.Kuvhuvhuta kuumba jekiseni + kufuridza;jekiseni kuumba jekiseni + kudzvanywa;blowing molding inofanira kuva nemusoro wakasara nepombi inofuridza, uye jekiseni rekuumba rinofanira kuva nechikamu cheGedhi

2. Kazhinji kutaura, kuumba jekiseni muviri wakasimba wepakati, kuvhuvhuta kuumba muviri usina mhango, uye kutaridzika kwekuvhuvhuta hakuna kuenzana.Blow molding ine chiteshi chinofuridza.

3. Injection molding, kureva, thermoplastic jekiseni molding, umo plastiki zvinhu zvakanyungudutswa uye ipapo jekiseni kupinda firimu mhango.Kana ipurasitiki yakanyungudutswa yapinda muforoma, inotonhodzwa kuita mhango-yakaita chimiro.Chimiro chinobuda kazhinji ndicho chigadzirwa chekupedzisira uye hapana kumwe kugadzirisa kunodiwa pamberi pemidziyo kana kushandiswa sechigadzirwa chekupedzisira.Ruzhinji ruzivo, senge maboss, mbabvu, uye shinda, zvinogona kuumbwa mune imwechete jekiseni rekuumba oparesheni.Muchina wekuumba jekiseni une zvinhu zviviri zvakakosha: jekiseni rinonyungudusa nekudyisa purasitiki muforoma, uye mudziyo wekusunga.Mhedzisiro yemidziyo ye mold ndeye:

1) Iyo mold yakavharwa pasi pemamiriro ekugamuchira jekiseni kumanikidzwa;

2) Bvisa chigadzirwa kubva mujekiseni midziyo yekunyungudutsa purasitiki isati yaiswa muforoma, uye wozodzora kudzvanywa uye nekukurumidza kupinza iyo inonyungudika mu mold.Kune marudzi maviri emidziyo yejekiseni inoshandiswa nhasi: screw pre-plasticizer kana maviri-nhanho midziyo, uye reciprocating screw.Zvimedu zvepre-plasticizers zvinoshandisa pre-plasticizing screw (danho rekutanga) kubaya purasitiki yakanyungudutswa mujekiseni rod (danho rechipiri).Mabhenefiti eiyo screw pre-plasticizer yakagadzikana yakanyunguduka mhando, yakanyanya kudzvanywa uye kumhanya kwakanyanya, uye chaiyo jekiseni vhoriyamu kutonga (uchishandisa mechanical thrust zvishandiso kumagumo ese episton sitiroko).

Aya mabhenefiti anodiwa kune akajeka, akatetepa-madziro zvigadzirwa uye yakakwirira yekugadzira mitengo.Zvakaipa zvinosanganisira nguva yekugara isina kuenzana (inotungamira mukuparara kwezvinhu), mitengo yepamusoro yemidziyo uye mari yekugadzirisa.Iwo anowanzo shandiswa kudzorera screw jekiseni haadi plunger kunyunguduka nekubaya purasitiki.

Blow molding: inozivikanwawo sehollow blow molding, blow molding, inokurumidza kukura mapurasitiki ekugadzirisa nzira.Iyo tubular yepurasitiki parison inowanikwa neextrusion kana jekiseni kuumbwa kwe thermoplastic resin inoiswa mune yakatsemurwa mold ichipisa (kana ichipisa kune yakapfava mamiriro), uye mweya wakatsikirirwa unopinzwa mupuriso pakarepo mushure mekuvhara mold kuvhuvhuta yepurasitiki parison. .Iyo inowedzera uye inonamira padhuze kumadziro emukati me mold, uye mushure mekutonhora uye kudhiza, akasiyana maburi zvigadzirwa zvinowanikwa.Iyo nzira yekugadzira yefirimu yakafuridzwa yakafanana zvakanyanya mumusimboti kuvhuvhuta kuumbwa kwezvigadzirwa zvisina nhanho, asi haishandise mold.Kubva pakuona kweplastic processing tekinoroji classification, iyo yekuumba maitiro einoputika firimu inowanzobatanidzwa mune extrusion.Iyo blow molding process yakatanga kushandiswa kugadzira yakaderera-density polyethylene vials munguva yeHondo Yenyika II.Mukupera kwema1950, nekuzvarwa kwe-high-density polyethylene uye kugadzirwa kwemichina yekuputira, hunyanzvi hwekugadzira pfuti hwakashandiswa zvakanyanya.Huwandu hwemidziyo isina humbowo hunogona kusvika zviuru zvemarita, uye kumwe kugadzira kwatora kutonga kwekombuta.Mapurasitiki akakodzera kuumbwa nekuputira anosanganisira polyethylene, polyvinyl chloride, polypropylene, polyester, nezvimwewo, uye midziyo yakawanikwa isina maburi inoshandiswa zvakanyanya semidziyo yekurongedza maindasitiri.